Violin string fastening device

Abstract

The utility model discloses a violin string fastening device, which belongs to the technical field of violin accessories and comprises a headstock provided with fasteners for fastening strings. The fastening piece comprises a plurality of rotating shafts, the rotating shafts are rotatably connected to the headstock, the outer sides of the rotating shafts are provided with fastening grooves, the inner sides of the fastening grooves are rotatably connected with fastening blocks, and reset springs are fixedly connected between the fastening blocks and the inner sides of the fastening grooves. One end of the rotating shaft is rotationally connected with a threaded rod with one end extending to the inner side of the rotating shaft, and the outer side of the threaded rod is in threaded connection with a connecting ring. According to the utility model, the string wound on the rotating shaft and the fastening block which can be extruded by the extrusion cylinder are stably extruded and fixed, and when the pull rod drives the rotating shaft to rotate and stretch the string to fasten and tighten the string, the rotating shaft can be supported and limited through the limiting block on the movable ring, so that the accuracy and the stability during rotating and fastening are improved, and the fastening effect of the string is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to violin accessory technical field especially relates to a violin string fastening device. BACKGROUND

[0002] Violin is a musical instrument closest to human voice, and the basic feature of good sound is that the tone is round and rich in resonance, pure and uniform. Violin has four strings of G, D, A and E. The tightness of the strings affects the quality of the violin sound. People often need to adjust the strings of new or long-time used violins to calibrate their tone.

[0003] Now the adjustment of the peg needs to rely on the hand to push the peg to the shaft hole direction, so that the peg produces a certain pressure on the shaft hole, thereby generating friction to resist the tension of the string. Such tight string not only is complicated to operate, but also is not convenient for high-precision fine tuning, which affects the tone of the violin. Moreover, the limiting way of the peg is poor, which is easy to loosen or slightly displace after long-term use, thereby affecting the pitch. Therefore, a violin string fastening device is proposed to solve the above problems. SUMMARY

[0004] (I) Utility model purpose

[0005] To solve the technical problems in the background art, the utility model provides a violin string fastening device, which can stably fasten the string through the fastener on the headrest, and has the advantages of good fastening effect.

[0006] (II) Technical scheme

[0007] The utility model provides a violin string fastening device, which comprises a headrest, and a fastener for fastening the string is arranged on the headrest.

[0008] The fastener comprises a plurality of rotating shafts, the rotating shafts are rotationally connected to the headrest, an outer side of the rotating shaft is provided with a fastening groove, a fastening block is rotationally connected to an inner side of the fastening groove, a return spring is fixedly connected between the fastening block and the inner side of the fastening groove, one end of the rotating shaft is rotationally connected to a threaded rod extending to an inner side thereof, the outer side of the threaded rod is screw-connected to a connecting ring, the outer side of the connecting ring is fixedly connected to a connecting rod penetrating through the rotating shaft, one end of the connecting rod penetrating through the rotating shaft is fixedly connected to a pressing cylinder, the other end of the rotating shaft is fixedly connected to a supporting block, the supporting block is slidingly connected to a pull rod penetrating through the supporting block, one end of the pull rod penetrating through the supporting block is fixedly connected to a movable ring, the side of the movable ring close to the headrest is fixedly connected to a limiting block extending to the inside of the headrest, the outer side of the pull rod is fixedly connected to a blocking ring, and the blocking ring and the supporting block are fixedly connected to a connecting spring.

[0009] Preferably, the number of the fastening grooves is several, and the several fastening grooves are annularly and equidistantly distributed on the outer side of the rotating shaft; and the side of the fastening block close to the fastening groove is serrated.

[0010] Preferably, a rectangular groove is formed on the side of the fastening block close to the fastening groove, the reset spring is fixedly connected between the rectangular groove and the inner side of the fastening groove, and one end of the fastening block is rotatably connected in the fastening groove through a rotating shaft.

[0011] Preferably, an inner thread is formed on the inner circumferential wall of the connecting ring, and the inner thread cooperates with the thread on the outer side of the threaded rod; and the inner wall of the one end of the extrusion cylinder close to the fastening block is conical.

[0012] Preferably, the pull rod is U-shaped, a circular hole for the pull rod to slide is formed on the support block, a limiting groove for the limiting block to limit is formed on the side of the violin head seat, the number of the limiting grooves is several, the several limiting grooves are annularly and equidistantly distributed with the rotating shaft as the center, and the specification of the limiting groove is matched with the specification of the limiting block.

[0013] Preferably, a through hole for the threaded rod to rotate is formed in the inner part of the rotating shaft, an annular groove with one end communicated with the through hole and located on the outer side of the supporting ring is formed on the inner wall of the threaded rod, and a rectangular hole for the connecting rod to slide is formed on the inner wall of the rotating shaft.

[0014] Compared with the prior art, the above technical scheme of the utility model has the following beneficial technical effects:

[0015] The violin string fastening device has the following beneficial technical effects. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a whole structure perspective view of the utility model;

[0017] Fig. 2 It is a whole structure side view of the utility model;

[0018] Fig. 3 It is a fastener structure side sectional view of the utility model.

[0019] Reference signs: 1, violin head seat; 2, fastener; 21, rotating shaft; 22, fastening groove; 23, fastening block; 24, reset spring; 25, extrusion cylinder; 26, connecting rod; 27, connecting ring; 28, threaded rod; 29, supporting ring; 210, movable ring; 211, support block; 212, pull rod; 213, stop ring; 214, connecting spring; 215, limiting block. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the utility model more clear and intelligible, the utility model will be further described in detail below in combination with specific embodiments and with reference to the drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0021] In the description of the utility model, it should be pointed out that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] In the description of the utility model, it should be pointed out that unless otherwise specified and limited, the terms "mounting", "provided with", "connection" and the like should be broadly understood, for example, "connection" can be fixed connection, welding, riveting, bonding and the like, or can be detachable connection, threaded connection, key connection, pin connection and the like, or integrally connected; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0023] As shown in Figs. 1-3 The utility model discloses a violin string fastening device, including the headrest 1, be provided with the fastener 2 for fastening string on the headrest 1.

[0024] In the utility model, the fastener 2 on the headrest 1 is used to stably clamp and stably tighten the string, so as to improve the fastening effect.

[0025] In an alternative embodiment, the fastener 2 comprises a plurality of rotating shafts 21, which are rotatably connected to the headrest 1, and the outer side of the rotating shaft 21 is provided with a fastening groove 22, the inner side of the fastening groove 22 is rotatably connected with a fastening block 23, the fastening block 23 and the inner side of the fastening groove 22 are fixedly connected with a return spring 24, one end of the rotating shaft 21 is rotatably connected with a threaded rod 28 extending to the inner side, the outer side of the threaded rod 28 is threadedly connected with a connecting ring 27, the outer side of the connecting ring 27 is fixedly connected with a connecting rod 26 extending through the rotating shaft 21, and one end of the connecting rod 26 extending through the rotating shaft 21 is fixedly connected with a pressing cylinder 25.

[0026] In this embodiment, the strings wound on the rotating shaft 21 can be pressed into the fastening groove 22 by the pressing cylinder 25 and the fastening block 23 driven by the threaded rod 28 for stable pressing and fixing.

[0027] It should be noted that the number of fastening grooves 22 is several, and the several fastening grooves 22 are equally distributed in a ring shape on the outer side of the rotating shaft 21, and the side close to the fastening groove 22 of the fastening block 23 is serrated to improve the stability of the fastening block 23 in pressing the strings into the fastening groove 22 and reduce the possibility of lateral deviation of the strings during playing.

[0028] The number of rotating shafts 21 is correspondingly arranged according to the number of strings, and is equally distributed from left to right and from low to high on the headrest 1, and the clamping orientation of the several fastening blocks 23 on each rotating shaft 21 is distributed in a staggered manner from left to right.

[0029] The side close to the fastening groove 22 of the fastening block 23 is provided with a rectangular groove, the return spring 24 is fixedly connected between the rectangular groove and the inner side of the fastening groove 22, so that the return spring 24 has a compression space when the fastening block 23 is pressed, and one end of the fastening block 23 is rotatably connected in the fastening groove 22.

[0030] In addition, the inner circumferential wall of the connecting ring 27 is provided with an internal thread, and the internal thread cooperates with the thread on the outer side of the threaded rod 28, so that the rotating threaded rod 28 can drive the connecting ring 27 to reciprocate in the rotating shaft 21 along the orientation of the parallel horizontal plane, and the inner wall close to the one end of the pressing cylinder 25 is conical, so that the fastening block 23 can extend into the pressing cylinder 25 when the pressing cylinder 25 presses the fastening block 23.

[0031] Secondly, the rotating shaft 21 is internally provided with a through hole for the rotation of the threaded rod 28, the inner wall of the threaded rod 28 is provided with an annular groove having one end in communication with the through hole and located on the outer side of the supporting ring 29, so that the threaded rod 28 can stably rotate in the rotating shaft 21 through the supporting ring 29, and the inner wall of the rotating shaft 21 is provided with a rectangular hole for the sliding of the connecting rod 26, so that the connecting rod 26 extending through the rotating shaft 21 has a transverse movement space.

[0032] In an alternative embodiment, the other end of the rotating shaft 21 is fixedly connected with a supporting block 211, the supporting block 211 is slidingly connected with a pull rod 212 having one end penetrating through the supporting block 211, the end of the pull rod 212 penetrating through the supporting block 211 is fixedly connected with a movable ring 210, the side of the movable ring 210 close to the headrest 1 is fixedly connected with a limiting block 215 having one end extending into the headrest 1, the outer side of the pull rod 212 is fixedly connected with a stop ring 213, and the stop ring 213 is fixedly connected with a connecting spring 214 between the stop ring 213 and the supporting block 211.

[0033] It should be noted that the pull rod 212 is in U shape, so that the operator can pull the pull rod 212 and rotate the supporting block 211 and the rotating shaft 21 at the same time, and the supporting block 211 is provided with a circular hole for sliding of the pull rod 212;

[0034] The side of the headrest 1 is provided with limiting grooves for limiting of the limiting block 215, the limiting grooves are in number of several, the several limiting grooves are annularly and equidistantly distributed around the rotating shaft 21, and the specifications of the limiting grooves are matched with the specifications of the limiting block 215, so that when the rotating shaft 21 rotates and drives the limiting block 215 on the movable ring 210 to rotate, the reset limiting block 215 can extend into the corresponding limiting groove to support and limit the rotating rotating shaft 21.

[0035] In the embodiment, when the pull rod 212 drives the rotating shaft 21 to rotate and stretch the string to be fastened and tightened, the limiting block 215 on the movable ring 210 can support and limit the rotating shaft 21, so as to improve the accuracy and stability during rotation and fastening, thereby improving the fastening effect of the string.

[0036] The working principle of the above embodiment is as follows:

[0037] After one end of the string 4 corresponding in number to the rotating shaft 21 is wound onto the rotating shaft 21 and located at the inner side of the fastening block 23, the connecting ring 27, the connecting rod 26 and the extrusion cylinder 25 can be moved towards the side close to the fastening block 23 by rotating the threaded rod 28, and the fastening block 23 can be extruded into the fastening groove 22, so as to fasten the one end of the string wound on the rotating shaft 21, and after the string is wound by pulling and rotating the pull rod 212 to drive the supporting block 211 and the rotating shaft 21, the string is in a tightened state, the limiting block 215 on the movable ring 210 can be extended into the limiting groove of the headrest 1 by pushing the pull rod 212, and the rotating shaft 21 can be limited, so as to fasten the string, and the fastened string is more stable.

[0038] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A violin string fastening device comprising a peg box (1), characterized in that, The headstock (1) is provided with fasteners (2) for fastening strings; The fastener (2) comprises a plurality of rotating shafts (21) rotatably connected to the headstock (1), the outer side is provided with a fastening groove (22), the inner side of the fastening groove (22) is rotatably connected with a fastening block (23), the fastening block (23) and the inner side of the fastening groove (22) are fixedly connected with a reset spring (24), one end of the rotating shaft (21) is rotatably connected with a threaded rod (28) extending to the inner side thereof, the outer side of the threaded rod (28) is threadedly connected with a connecting ring (27), the outer side of the connecting ring (27) is fixedly connected with a connecting rod (26) extending through the rotating shaft (21), one end of the connecting rod (26) extending through the rotating shaft (21) is fixedly connected with a pressing cylinder (25), the other end of the rotating shaft (21) is fixedly connected with a supporting block (211), the supporting block (211) is slidably connected with a pull rod (212) extending through the supporting block (211), one end of the pull rod (212) extending through the supporting block (211) is fixedly connected with a movable ring (210), the side of the movable ring (210) close to the headstock (1) is fixedly connected with a limiting block (215) extending to the inside of the headstock (1), the outer side of the pull rod (212) is fixedly connected with a stop ring (213), the stop ring (213) and the supporting block (211) are fixedly connected with a connecting spring (214).

2. A violin string fastening device according to claim 1, characterized in that The number of the fastening grooves (22) is several, and the several fastening grooves (22) are annularly and equidistantly distributed on the outer side of the rotating shaft (21), and the side of the fastening block (23) close to the fastening groove (22) is serrated.

3. A violin string fastening device according to claim 1, characterized in that The side of the fastening block (23) close to the fastening groove (22) is provided with a rectangular groove, the reset spring (24) is fixedly connected between the rectangular groove and the inner side of the fastening groove (22), and one end of the fastening block (23) is rotatably connected in the fastening groove (22) through a rotating shaft.

4. A violin string fastening device according to claim 1, characterized in that The inner circumferential wall of the connecting ring (27) is provided with an internal thread, and the internal thread and the thread on the outer side of the threaded rod (28) are matched with each other, and the inner wall of the end of the pressing cylinder (25) close to the fastening block (23) is conical.

5. A violin string fastening device according to claim 1, characterized in that The pull rod (212) is U-shaped, the supporting block (211) is provided with a circular hole for the sliding of the pull rod (212), the side edge of the headstock (1) is provided with a limiting groove for the limiting of the limiting block (215), the number of the limiting grooves is several, the several limiting grooves are annularly and equidistantly distributed with the rotating shaft (21) as the center, and the specifications of the limiting grooves are matched with the specifications of the limiting block (215).

6. A violin string fastening device according to claim 1, characterized in that The inner part of the rotating shaft (21) is provided with a through hole for the rotation of the threaded rod (28), the inner wall of the threaded rod (28) is provided with an annular groove in communication with the through hole and located on the outer side of the supporting ring (29), and the inner wall of the rotating shaft (21) is provided with a rectangular hole for the sliding of the connecting rod (26).

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