CN210535334U

CN210535334U - Banhu string tension driver

Info

Publication number: CN210535334U
Application number: CN201921042243.6U
Authority: CN
Inventors: 李拥军
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-04
Filing date: 2019-07-04
Publication date: 2020-05-15
Anticipated expiration: 2029-07-04

Abstract

A banhu string tension driver comprises a worm wheel, a worm shaft, a peg, a seat body, a driving piece, a bearing and a screw plug, wherein the worm shaft is matched with the worm wheel, the peg is connected with the worm wheel, the inner ring of the bearing is fixedly connected with a shaft head, the driving rod penetrates through an external thread sleeve and extends into a shaft cavity, the rotating seat is in running fit with the shaft cavity and an end plate at the closed end of the shaft cavity, the outer ring of the bearing is fixed with the shaft cavity, the screw plug is screwed with an internal thread of the shaft cavity, and the end part of a cylindrical body part 31 is in running fit with the end plate at the closed end of; the worm wheel is arranged in the worm wheel cavity, the shaft body part of the chord shaft is in running fit with the rotating hole of the worm wheel cavity, and the threaded connecting part is screwed with the central threaded hole of the worm wheel. The driving piece can be ensured to rotate along the axis by the arrangement of the shaft cavity, and the assembly is convenient; the consumer can change by oneself, convenient to use.

Description

Banhu string tension driver

Technical Field

The utility model relates to a peg of a banhu, in particular to a driving device of a string of a banhu.

Background

At present, in the prior art, a banhu string tension driver comprises a worm gear, a worm shaft and a peg, and when the banhu string tension driver is used, the peg is assembled. There are problems in that: when the multifunctional musical instrument is used, the functional cavity is required to be arranged on the musical instrument column, and the worm wheel, the worm shaft and the peg are assembled, so that the precision is poor; when the device is used by a consumer, the device cannot be repaired or replaced by the consumer.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: provides a banhu string tension driver which has the characteristics of convenient assembly and high precision.

The utility model discloses a realize like this: the utility model provides a banhu string tension drive ware, includes worm wheel, worm-shaft and peg, worm-shaft and worm wheel cooperation, peg and worm wheel are connected, and it holds special part to lie in: also comprises a seat body, a driving piece, a bearing and a screw plug,

the base body comprises a square base part and a round shaft base part, and the square base part is provided with a worm gear cavity with an opening at one side and a rotating shaft hole arranged at the closed end of the worm gear cavity; circular axle seat portion includes one end open-ended axle chamber and is located the external screw thread cover of axle chamber blind end, and the open end in axle chamber is equipped with the internal thread: the worm wheel cavity is intersected and communicated with the shaft cavity;

the driving piece comprises a driving rod, a rotating seat adjacent to the driving rod, a worm shaft and a shaft head arranged at the end part of the worm shaft;

the peg comprises a cylindrical body part, a shaft body part and a threaded connecting part, and the cylindrical body part is provided with an arc-shaped groove;

the inner ring of the bearing is fixedly connected with the shaft head, the driving rod penetrates through the external thread sleeve and extends into the shaft cavity, the rotating seat is in rotating fit with the shaft cavity and the end plate at the closed end of the shaft cavity, the outer ring of the bearing is fixed with the shaft cavity, and the screw plug is screwed with the internal thread of the shaft cavity; the worm wheel is arranged in the worm wheel cavity, the shaft body part of the chord shaft is in running fit with the rotating hole of the worm wheel cavity, and the threaded connecting part is screwed with the central threaded hole of the worm wheel.

The banhu string tension driver is characterized in that: the bearing further comprises a circular pad, and the circular pad is matched with the bearing and the screw plug.

The banhu string tension driver is characterized in that: six tool holes are arranged on the screw plug.

The utility model relates to a banhu string tension driver, which has integrity due to the adoption of the structure, and the arrangement of the shaft cavity can ensure that the driving piece rotates along the axis, and the assembly is convenient; the consumer can change by oneself, convenient to use.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a partial sectional view of the present invention.

Fig. 3 is a left side view of the present invention.

Fig. 4 is a view a-a of fig. 3.

Fig. 5 is a schematic view of the present invention assembled to a piano column.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1 and 4, the banhu string tension driver comprises a worm wheel 1, a worm shaft 2 and a chord shaft 3, wherein the worm shaft 2 is matched with the worm wheel 1, and the chord shaft 2 is connected with the worm wheel 1.

Also comprises a seat body 4, a driving piece 5, a bearing 6 and a screw plug 7,

the seat body 4 comprises a square seat part 41 and a round shaft seat part 42, wherein the square seat part 41 is provided with a worm wheel cavity 411 with an opening at one side and a rotating shaft hole 412 arranged at the closed end of the worm wheel cavity; circular shaft seat portion 42 includes one end open-ended axle chamber 421 and is located the external screw thread cover 422 of axle chamber closed end, and the open end of axle chamber 421 is equipped with the internal thread: the worm wheel cavity 411 and the shaft cavity 421 are intersected and communicated;

the driving piece 5 comprises a driving rod 51, a rotating seat 52 adjacent to the driving rod, the worm shaft 2 and a shaft head 53 arranged at the end part of the worm shaft;

the peg 3 comprises a cylindrical body 31, a shaft body 32 and a threaded connection part 33, wherein the cylindrical body 31 is provided with an arc-shaped groove 311, and the arc-shaped groove 311 is provided with a string passing hole 312;

the inner ring of the bearing 6 is fixedly connected with the shaft head 53, the driving rod 51 passes through the external thread sleeve 422 and extends into the shaft cavity 421, the rotating seat 52 is in rotating fit with the shaft cavity 421 and the end plate at the closed end of the shaft cavity, the outer ring of the bearing 6 is fixed with the shaft cavity 421, and the screw plug 7 is screwed with the internal thread of the shaft cavity 421; the worm wheel 1 is arranged in the worm wheel cavity 411, the shaft body part 32 of the peg 3 is in rotating fit with the rotating hole 412 of the worm wheel cavity 411, and the threaded connection part 33 is screwed with the central threaded hole of the worm wheel 1; the end of the cylindrical body 31 is in running engagement with the end plate of the closed end of the worm wheel chamber 411. The screw plug 7 limits the bearing 6, and the rotating seat 52 is in rotating fit with the shaft cavity 421 and the end plate at the closed end of the shaft cavity, so that the driving piece 5 rotates along the axis and is prevented from moving along the axial direction; the shaft body part 32 of the shaft string shaft 3 is in running fit with the rotating hole 412 of the worm wheel cavity 411, so that the worm wheel 1 rotates along the axis and does not jump; the accuracy is improved.

The bearing further comprises a circular pad 8, and the circular pad 8 is matched with the bearing 6 and the screw plug 7.

And the screw plug 7 is provided with six inner tool holes 71.

As shown in FIG. 5, when the present invention is used, the piano column 8 is provided with an accommodating chamber 81 with an open end, a fixing hole 82 at the closed end of the accommodating chamber 81, and a chord column rotating hole 83,

inserting the seat body 4 into the accommodating cavity 81, enabling the external thread sleeve 422 to penetrate through the fixing hole 82 to extend out, and screwing the nut 9 with the external thread sleeve 422; the cylindrical body portion 31 of the chord 3 is inserted into the chord rotation hole 83; referring to fig. 2, the shaft body 32 is inserted into the rotation hole 412 of the worm cavity 411, and the male screw connecting portion 33 is screwed into the central screw hole of the worm wheel. The friction force between the thread of the external thread connecting part 33 and the thread of the central threaded hole ensures that the worm wheel 1 rotates clockwise or anticlockwise, and the chord column is not connected with the worm wheel loosely.

What has been described above is only a preferred embodiment of the present invention. It should be noted that, for a person skilled in the art, several modifications and variations can be made without departing from the principle of the invention, which is also considered as the protection scope of the invention.

Claims

1. The utility model provides a banhu string tension drive ware, includes worm wheel, worm-shaft and peg, worm-shaft and worm wheel cooperation, the peg is connected with the worm wheel, and it is held to symbolize and lies in: also comprises a seat body, a driving piece, a bearing and a screw plug,

the inner ring of the bearing is fixedly connected with the shaft head, the driving rod penetrates through the external thread sleeve and extends into the shaft cavity, the rotating seat is in rotating fit with the shaft cavity and the end plate at the closed end of the shaft cavity, the outer ring of the bearing is fixed with the shaft cavity, the screw plug is screwed with the internal thread of the shaft cavity, and the end part of the cylindrical body part 31 is in rotating fit with the end plate at the closed end of the worm gear cavity 411; the worm wheel is arranged in the worm wheel cavity, the shaft body part of the chord shaft is in running fit with the rotating hole of the worm wheel cavity, and the threaded connecting part is screwed with the central threaded hole of the worm wheel.

2. The banhu string tension driver of claim 1, wherein: the bearing further comprises a circular pad, and the circular pad is matched with the bearing and the screw plug.

3. The banhu string tension driver of claim 1, wherein: six tool holes are arranged on the screw plug.