CN221281743U

CN221281743U - Hollow peg

Info

Publication number: CN221281743U
Application number: CN202322978032.6U
Authority: CN
Inventors: 陈宝屋; 王君; 王永康; 李玉卯
Original assignee: TIANJIN HUAYI MUSICAL INSTRUMENT CO Ltd
Current assignee: TIANJIN HUAYI MUSICAL INSTRUMENT CO Ltd
Priority date: 2023-11-05
Filing date: 2023-11-05
Publication date: 2024-07-05
Anticipated expiration: 2033-11-05

Abstract

The utility model relates to the technical field of accessories of stringed musical instruments, in particular to a hollow string shaft. The hollow chord shaft comprises a rotating shaft, and a rubber sleeve sleeved on the rotating shaft at the inner side of the abutting ring of the end head of the rotating shaft and the inner abutting ring of the inner sleeve, an inserting groove is formed in the inserting end of the rotating shaft, and an excessive cambered surface is formed between the root of the inserting groove and the shaft body; the rubber sleeve is sleeved at the root of the insertion groove, and the inner sleeve wall of the rubber sleeve is provided with a trapezoid groove matched with the excessive cambered surface; the abutting ring is internally provided with threads and is in threaded connection with external threads arranged on the shaft body on the inserting groove. The hollow chord shaft provided by the utility model has the advantages that the annular rubber pad is provided with the protrusions matched with the chamfer angles of the rubber sleeve, so that the sealing between the abutting ring and the rubber sleeve is realized, and meanwhile, the annular rubber pad and the rubber sleeve are of elastic structures, so that the hidden trouble of connecting failure of the rotating shaft and the body caused by vibration of a musical instrument is eliminated in the structural form.

Description

Hollow peg

Technical Field

The utility model relates to the technical field of accessories of stringed musical instruments, in particular to a hollow string shaft.

Background

The string shaft is a rotating shaft capable of fixing strings and adjusting the tightness of the strings. The device has the effects that the pitch is adjusted, each line of the lute has a fixed pitch, when the actual pitch is not matched with the fixed pitch, the pitch needs to be adjusted, under the condition of a certain chord length, the aim of adjusting the pitch can be achieved by changing the tightness of the chord, the pitch is higher when the chord is tightly than when the chord is loosely, and the tightness can be changed by twisting the piano shaft;

The wood shaft is the most common shaft in the traditional musical instrument, the wood shaft almost used by the traditional musical instrument has a simple structure, the strings are pulled by the friction force between the shafts, the wood shaft is inserted into the shaft inlet of the head so as to be installed on the head at present, however, when the wood shaft continuously rotates to tension and adjust the strings, the problem of loosening easily occurs along with frequent adjustment of the wood shaft, so that hidden trouble of connection failure is generated, and the phenomenon of connection failure of the rotating shaft and the body is easily caused because of vibration of the musical instrument.

Accordingly, there is a need to provide a new hollow tuning peg that addresses the above-described problems.

Disclosure of utility model

In order to solve the technical problems, the utility model provides a hollow chord.

The hollow peg provided by the utility model comprises:

A rotating shaft, and

The rubber sleeve is sleeved on the rotating shaft at the inner side of the abutting ring of the rotating shaft end head and the inner sleeve abutting ring, an inserting groove is formed in the inserting end of the rotating shaft, and an excessive cambered surface is formed between the root of the inserting groove and the shaft body;

The rubber sleeve is sleeved at the root of the insertion groove, and the inner sleeve wall of the rubber sleeve is provided with a trapezoid groove matched with the excessive cambered surface;

the abutting ring is internally provided with threads and is in threaded connection with external threads arranged on the shaft body on the inserting groove.

Preferably, the outer sleeve wall of the rubber sleeve is provided with a chamfer.

Preferably, the inner wall of the abutting ring is fixedly embedded with an annular rubber pad, and the annular rubber pad is provided with a bulge matched with the chamfer of the rubber sleeve.

Preferably, the rubber ring is embedded in the inner sleeve surface of the rubber sleeve, and the rubber ring is embedded in the annular ball-shaped groove formed in the rotating shaft.

Preferably, an annular groove is formed in the middle of the rotating shaft.

Preferably, the rotating shaft of the annular groove part is provided with string inlet holes which are radially distributed and penetrate through the rotating shaft.

Preferably, a knob is fixedly arranged at one end of the rotating shaft far away from the abutting ring.

Compared with the related art, the hollow chord shaft provided by the utility model has the following beneficial effects:

1. According to the string head, the rotating shaft is inserted into the end head of the string and penetrates through the shaft inlet, the other side, provided with the rubber sleeve part, of the rotating shaft penetrates through the string, the abutting ring is subsequently sleeved into the inserting groove of the rotating shaft and is rotated and screwed up, so that the annular rubber pad abuts against the outer sleeve wall of the rubber sleeve, and the string shaft is fixed on the string head;

2. The annular rubber pad is provided with the protrusions matched with the chamfer angles of the rubber sleeve, so that the sealing between the abutting ring and the rubber sleeve is realized, and meanwhile, the annular rubber pad and the rubber sleeve are of elastic structures, so that the hidden trouble of connecting failure of the rotating shaft and the musical instrument body caused by vibration of the musical instrument is eliminated in the structural form.

Drawings

FIG. 1 is a schematic view of a hollow tuning peg according to a preferred embodiment of the present utility model;

FIG. 2 is a schematic view of the structure of the explosion shown in FIG. 1;

FIG. 3 is a schematic cross-sectional view of the spindle of FIG. 2;

fig. 4 is a schematic cross-sectional view of the structure shown in fig. 1.

Reference numerals in the drawings: 1. a rotating shaft; 11. an external thread; 12. excessive cambered surface; 1a, an annular groove; 1b, a string inlet hole; 1c, inserting grooves; 1d, an annular spherical groove; 2. an abutment ring; 21. an annular rubber pad; 3. a rubber sleeve; 3a, a trapezoid groove; 31. a rubber ring; 4. and (5) a knob.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Specific implementations of the utility model are described in detail below in connection with specific embodiments.

Referring to fig. 1 to 4, a hollow tuning peg according to an embodiment of the present utility model includes: the device comprises a rotating shaft 1, an abutting ring 2 and a rubber sleeve 3.

In the embodiment of the present utility model, referring to fig. 1, 2, 3 and 4, the end of the rotating shaft 1 is sleeved with an abutting ring 2 and a rubber sleeve 3 sleeved on the rotating shaft 1 inside the abutting ring 2, an insertion groove 1c is formed at the insertion end of the rotating shaft 1, an excessive cambered surface 12 is formed at the root of the insertion groove 1c and the shaft body, the rubber sleeve 3 is sleeved at the root of the insertion groove 1c, a trapezoid groove 3a matched with the excessive cambered surface 12 is formed in the inner sleeve wall of the rubber sleeve 3, a rubber ring 31 is embedded in the inner sleeve surface of the rubber sleeve 3, and the rubber ring 31 is embedded in an annular spherical groove 1d formed in the rotating shaft 1;

The inside of the abutting ring 2 is provided with threads and is connected with the external threads 11 arranged on the shaft body on the inserting groove 1c in a threaded manner, the outer sleeve wall of the rubber sleeve 3 is provided with a chamfer, the inner wall of the abutting ring 2 is fixedly embedded with an annular rubber pad 21, and the annular rubber pad 21 is provided with a bulge matched with the chamfer of the rubber sleeve 3.

It should be noted that: inserting the rotating shaft 1 to the end of the string and penetrating through the shaft inlet, enabling the other side of the rotating shaft 1, where the rubber sleeve 3 is arranged, penetrating through the string, subsequently sleeving the abutting ring 2 into the inserting groove 1c of the rotating shaft 1, and rotating and screwing the abutting ring so that the annular rubber pad 21 abuts against the outer sleeve wall of the rubber sleeve 3, so that the string shaft is fixed on the head;

And because be provided with the protruding of mutually supporting with rubber sleeve 3 chamfer on the annular rubber pad 21, realize supporting and close sealing between 2 and the rubber sleeve 3, simultaneously because shape rubber pad 21 and rubber sleeve 3 are elastic structure, consequently eliminated the hidden danger that leads to the fact pivot 1 and the organ body connection to lose efficacy because of the musical instrument vibration in structural style.

In the embodiment of the present utility model, referring to fig. 1, an annular groove 1a is provided in the middle of the rotating shaft 1, a string inlet hole 1b radially distributed and penetrating the rotating shaft 1 is provided on the rotating shaft 1 of the annular groove 1a, and a knob 4 is fixedly installed at one end of the rotating shaft 1 far from the abutting ring 2.

It should be noted that: the ends of the strings pass through the string inlet holes 1b, and then the strings can be wound on the outer surface of the annular groove 1a formed in the rotating shaft 1 by rotating the knob 4, so that the use is convenient.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims

1. A hollow tuning peg, comprising:

A rotating shaft (1), and

The rubber sleeve (3) is sleeved on the abutting ring (2) at the end of the rotating shaft (1) and the rotating shaft (1) at the inner side of the inner sleeve abutting ring (2), an inserting groove (1 c) is formed in the inserting end of the rotating shaft (1), and an excessive cambered surface (12) is formed in the root of the inserting groove (1 c) and the shaft body;

The rubber sleeve (3) is sleeved at the root of the inserting groove (1 c), and a trapezoid groove (3 a) matched with the excessive cambered surface (12) is formed in the inner sleeve wall of the rubber sleeve (3);

the abutting ring (2) is internally provided with threads and is in threaded connection with external threads (11) arranged on the shaft body on the inserting groove (1 c).

2. Hollow tuning peg according to claim 1, wherein the outer jacket wall of the rubber jacket (3) is provided with a chamfer.

3. Hollow tuning peg according to claim 2, characterized in that the inner wall of the abutment ring (2) is fixedly embedded with an annular rubber pad (21), and the annular rubber pad (21) is provided with a protrusion matching with the chamfer of the rubber sleeve (3).

4. Hollow chord axis according to claim 1, characterized in that the inner sleeve surface of the rubber sleeve (3) is embedded with a rubber ring (31), and the rubber ring (31) is embedded into an annular spherical groove (1 d) formed in the rotating shaft (1).

5. Hollow tuning peg according to claim 1, characterized in that the central part of the spindle (1) is provided with an annular groove (1 a).

6. Hollow chord axis according to claim 5, characterized in that the spindle (1) of the annular groove (1 a) part is provided with chord inlet holes (1 b) which are radially distributed and penetrate the spindle (1).

7. Hollow tuning peg according to claim 1, characterized in that the end of the spindle (1) remote from the abutment ring (2) is fixedly fitted with a knob (4).