WO2020024322A1

WO2020024322A1 - Intelligent tuning and fixing apparatus for pipa

Info

Publication number: WO2020024322A1
Application number: PCT/CN2018/099584
Authority: WO
Inventors: 杨艺云
Original assignee: 杨艺云
Priority date: 2018-07-31
Filing date: 2018-08-09
Publication date: 2020-02-06
Also published as: CN108847202A

Abstract

An intelligent tuning and fixing apparatus for a pipa, comprising a fine tuning peg (2) disposed at an upper end of a pipa body (1), and an elastic bridge (3) disposed on a panel (13) of the pipa body (1), wherein the fine tuning peg (2) comprises an outer peg (22), an inner peg (25), and an intelligent control mechanism (20). Inner teeth (222) are provided circumferentially on an inner wall at one end of a first internal cavity (224), and a first internal thread (226) is provided on an inner wall at one end of a second internal cavity (225). The outer peg (22) is provided with a flange ring (24) and a rotating knob (23). The inner peg (25) is provided with a first sliding block (257), a third through-hole (256), a retaining plate (255), an external thread (254), and a retaining ring (252). The elastic bridge (3) comprises an arc-shaped plate (30), a through-groove (31), an arc-shaped rod (32), a second spring (33), a second sliding block (34), and a support plate (35). The intelligent tuning and fixing apparatus for a pipa has a simple structure and is convenient to use, safe, reliable, firmly fixed and highly intelligent, effectively addressing the problem in which the existing pipa strings are not easily fine-tuned.

Description

Intelligent tuning and fixing device for lute

Technical field

The invention relates to the field of musical instrument auxiliary equipment, in particular to an intelligent tuning and fixing device for a lute.

Background technique

At present, the chord shafts of lutes are basically wooden shafts. Because the wooden shafts are easily affected by temperature and humidity, the coordinated dimensions of the shaft holes and the chord shafts change, making the wooden shafts unscrewable or loose or easily loosened after tightening. The strings cannot be fixed steadily, which makes tuning difficult and brings great trouble to beginners.

In addition, the stress that the lute string can withstand has a certain limit, and the existing wooden shaft cannot measure the stress acting on the lute string. Once tuning or use, the stress value exceeds the ability of the lute string to easily break the string. People accident.

Due to the structure of the wooden shaft itself and the friction between the wooden shaft and the shaft hole is affected by temperature and humidity, it is difficult to accurately adjust the pitch during tuning. Although there are chord shafts made by the principle of worm turbine transmission in the prior art, However, the turbine worm transmission itself is easy to wear, has a short service life, and the transmission efficiency of the turbine worm is low. When using pipa strings with a large remaining length, it is necessary to manually wind or slowly wind the winding axis, which is very troublesome.

Summary of the invention

The technical problem to be solved by the present invention is: in order to overcome the problems mentioned above, an intelligent tuning and fixing device for a lute is provided, which has a reasonable structure, simple structure, convenient use, safety, reliability, and fastening. The high degree of intelligence and other advantages effectively solve the problem that the existing lute string is not easy to fine-tune.

The technical solution adopted by the present invention to solve its technical problems is: an intelligent tuning and fixing device for the lute, including a fine tuning peg set on the upper end of the lute body, and an elastic hand cover provided on the lute body panel. The fine tuning chord shaft includes an outer shaft, an inner shaft, and an intelligent control mechanism. One end of the outer shaft is a tapered structure, and the other end of the outer shaft is a cylindrical structure. An inner cavity, the outer shaft having a conical structure at one end, a second inner cavity having a circular structure inside;

The first inner cavity and the second inner cavity are communicated with each other. The inner wall of the first inner cavity and the second inner cavity at a joint close to one end of the first inner cavity is provided with an inner tooth shape in a circumferential direction. The first inner cavity and the second inner cavity are connected to each other. A first internal thread is provided on the inner wall of the end near the second inner cavity; a convex ring and a knob are provided on the outer wall of the outer shaft near the tapered structure; a second end connected to the first inner cavity is provided on the other end of the outer shaft. One through hole and second through hole;

One end of the outer shaft has a cylindrical structure that passes through the shaft holes on both sides of the chord groove in turn and is locked by the end cap provided on one end surface of the pipa body, and the convex ring abuts the other end surface of the pipa body;

One end of the inner shaft is axially provided with a first slider and a third through hole, and the other end of the inner shaft is provided with a baffle plate, an external thread and a snap ring that are screwed to each other with the first internal thread; the snap ring The outer wall surface is provided with an external tooth shape that meshes with the internal tooth shape, and the snap ring is provided with a second internal thread that is screw-connected with the external thread;

The intelligent control mechanism includes a torque sensor, a controller, a battery, a control button, and an indicator light provided in the second through hole; the one end of the inner shaft and the torque sensor are connected to each other through a connector. Connected, the other end of the inner shaft passes through the first inner cavity, the second inner cavity and the knob are fixedly connected to each other; the end cover is provided with a fourth through hole, and the control button extends from the fourth through hole;

The elastic hand cover includes an arc-shaped plate connected to the panel, a through groove provided on the arc-shaped plate, an arc-shaped rod provided below the arc-shaped plate, a second spring sleeved on the arc-shaped rod, and a sleeve. A second slider on the arc-shaped rod and abutting against the second spring, and a support plate provided between the two ends of the arc-shaped plate and the panel; the second slider is provided with a hook, and the hook is connected from the through Stick out in the slot.

Further, the convex ring and the outer shaft are an integrated structure or the convex ring is a ring structure sleeved on the outer shaft and screw-connected thereto.

Further, the outer diameter of the snap ring is larger than the second inner cavity.

Further, the indicator lamp is an LED lamp, and at least two color LED light emitting chips are integrated in the indicator lamp.

Further, the knob is provided with a scale, and an end of the inner shaft and the knob connected to each other is provided with a colored ring of the same width.

Further, the connector includes a housing provided with a sliding groove in the axial direction of the inner cavity, and a first spring provided in the housing. The internal shaft is sleeved with the first spring, and the first slider and the sliding groove are mutually Connection; the two ends of the first spring are in contact with the housing and the inner shaft, and the housing is connected with the torque sensor.

Further, the supporting plate is made of a mesh plate.

Further, the controller is electrically connected to a battery, a control button, an indicator light, and a torque sensor, respectively.

The beneficial effects of the present invention are: an intelligent tuning and fixing device for a pipa, comprising a fine tuning peg provided on the upper end of the pipa body, and an elastic hand covering provided on the panel of the pipa body, wherein the fine tuning peg passes through the outer shaft It is fixed to the lute body. The upper end of the lute string penetrates into the outer shaft and is connected to the inner shaft. The internal pressure knob is used to loosen the connection between the external tooth shape and the internal tooth shape. The internal shaft can be quickly rotated to wind the lute string. The pressure on the knob causes the external tooth shape to mesh with the internal tooth shape, and continues to rotate the inner shaft. The inner shaft is threaded to the outer shaft and pulls the lute string for fine adjustment. During the fine adjustment, the internal axis displacement causes the lute string to tilt, which acts on the internal shaft. The force in the tangential direction is reduced, and a friction force is generated between the first internal thread and the external thread to counteract the force acting on the internal axis in the tangential direction to form a self-locking; at the same time, the internal shaft is connected to a torque sensor to measure the torque on the internal shaft After being transformed into the lute string by the controller, the indicator will indicate whether the stress value is within the tolerable range. The elastic hand will use the spring force to maintain the axial direction of the lute string. The same force prevents the lute string from elastically deforming and becoming slack; its structure is reasonable, and it has the advantages of simple structure, convenient use, safety and reliability, fixed fastening, and high degree of intelligence. It effectively solves the problem that the existing lute strings are not easy to fine-tune. .

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is further described below with reference to the drawings and embodiments.

1 is a schematic diagram of an installation position of an intelligent tuning and fixing device for a lute according to the present invention;

2 is a schematic diagram of an external structure of an intelligent tuning and fixing device for a lute according to the present invention;

3 is a schematic diagram of an internal structure of an intelligent tuning and fixing device for a lute according to the present invention;

4 is a schematic diagram of an outer shaft structure of an intelligent tuning and fixing device for a lute according to the present invention;

5 is a schematic diagram of an inner shaft structure of an intelligent tuning and fixing device for a lute according to the present invention;

6 is a schematic structural diagram of a radial cross-section of a housing and an inner shaft of an intelligent tuning and fixing device for a lute according to the present invention;

FIG. 7 is a schematic diagram of a connection structure of a snap ring and an internal tooth for an intelligent tuning and fixing device of a lute according to the present invention; FIG.

8 is a schematic structural diagram of an end cover for an intelligent tuning and fixing device for a lute according to the present invention;

9 is a top view of a flexible hand covering structure of an intelligent tuning and fixing device for a lute according to the present invention;

FIG. 10 is a schematic structural cross-sectional view of an elastic hand for an intelligent tuning and fixing device for a lute according to the present invention.

The symbols in the drawings are as follows: 1. Pipa body, 11, shaft hole, 12, chord groove, 13, panel, 2, fine tuning of the chord shaft, 20, intelligent control mechanism, 21, end cover, 211, fourth through hole 22, outer shaft, 221, first through hole, 222, internal tooth profile, 223, second through hole, 224, first internal cavity, 225, second internal cavity, 226, first internal thread, 23, knob 231, scale, 24, convex ring, 25, inner shaft, 251, connector, 2511, housing, 2512, first spring, 2513, slide groove, 252, snap ring, 253, colored ring, 254, outer Thread, 255, baffle, 256, third through hole, 257, first slider, 258, second internal thread, 259, external tooth profile, 26, torque sensor, 27, controller, 271, indicator light, 28 , Control button, 29, battery, 3, elastic cover, 30, curved plate, 31, through slot, 32, curved rod, 33, second spring, 34, second slider, 35, support plate.

detailed description

The present invention will now be described in further detail with reference to the drawings. These drawings are simplified schematic diagrams, which illustrate the basic structure of the present invention only in a schematic manner, so they only show the constitutions related to the present invention.

An intelligent tuning and fixing device for a lute as shown in FIG. 1 includes a fine tuning peg shaft 2 provided on an upper end of the lute body 1 and an elastic hand 3 provided on a panel 13 of the lute body 1.

As shown in FIGS. 2 and 3, the fine tuning chord shaft 2 includes an outer shaft 22, an inner shaft 25, and an intelligent control mechanism 20.

As shown in FIG. 4, one end of the outer shaft 22 is a tapered structure, and the other end of the outer shaft 22 is a cylindrical structure. The outer shaft 22 has a cylindrical structure. A circular structured second internal cavity 225 is provided in the interior with one end of the conical structure; the intelligent control mechanism 20 is disposed in the first internal cavity 224, and the internal shaft 25 is sleeved in the first internal cavity 224 and the second internal cavity 225 .

The first inner cavity 224 and the second inner cavity 225 communicate with each other. The inner wall of the end of the first inner cavity 224 and the second inner cavity 225 adjacent to the first inner cavity 224 is provided with an inner tooth shape 222 in the circumferential direction. A first internal thread 226 is provided on the inner wall of the end of the cavity 224 and the second inner cavity 225 near the second inner cavity 225; a convex ring 24, a knob 23, and an outer shaft are provided on the end of the outer wall 22 near the tapered structure. The other end of 22 is provided with a first through hole 221 and a second through hole 223 that communicate with the first inner cavity 224.

As shown in FIG. 3, FIG. 5, and FIG. 6, one end of the outer shaft 22 having a cylindrical structure passes through the shaft holes 11 on both sides of the chord groove 12 in sequence and is provided with an end cover 21 provided on one end surface of the pipa body 1. One end of the screw-locked outer shaft 22 away from the convex ring 24, and the convex ring 24 is in contact with the other end surface of the lute body 1;

The one end of the inner shaft 25 is provided with a plurality of first sliders 257 and the third through holes 256 in the axial direction. The other end of the inner shaft 25 is provided with a baffle plate 255, and external threads 254, which are screw-connected with the first internal thread 226. Snap ring 252;

As shown in FIG. 7, the outer wall surface of the snap ring 252 is provided with an external tooth shape 259 which is engaged with the internal tooth shape 222. The snap ring 252 is provided with a second internal thread 258 which is screw-connected with the external thread 254. The snap ring 252 and the inner shaft 25 are sleeved with each other and are threadedly connected;

As shown in FIG. 3, the intelligent control mechanism 20 includes a torque sensor 26, a controller 27, a battery 29, a control button 28, and an indicator light 271 provided in the second through hole 223. The torque sensor 26 is used to measure the torque value on the inner shaft 25, and the controller 27 is used to convert the measured torque value into the axial stress value on the lute string, that is, the tension value, and pass through the The preset value is compared, and the user is prompted by the indicator light 271 whether the stress value is within the safe range.

One end of the inner shaft 25 is connected to the torque sensor 26 through a connector 251, and the other end of the inner shaft 25 passes through the first inner cavity 224, the second inner cavity 225 and the knob 23 are fixedly connected to each other;

The first through hole 221 is used to penetrate the upper end of the lute string into the first cavity 224, the second through hole 223 is used to install the indicator light 271, and the third through hole 256 is used to penetrate and fix the upper end of the lute string. The shaft 25 winds the lute string on the inner shaft 25.

As shown in FIG. 8, the end cover 21 is provided with a fourth through hole 211. In an embodiment shown in FIG. 3, the control button 28 extends from the fourth through hole 211. The control button 28 is used to send control instructions to the controller 27. For example, click the control button 28 to measure the torque on the inner shaft 25. Press and hold the control button 28 to stop measuring the torque on the inner shaft 25. Double-click the control button 28 to set the current The detected torque value is the maximum torque value on the inner shaft 25 converted from the maximum stress that can be sustained on the lute string;

As shown in FIGS. 9 and 10, the elastic hand cover 3 includes an arc-shaped plate 30 connected to the panel 13, a through groove 31 provided on the arc-shaped plate 30, and an arc-shaped rod disposed below the arc-shaped plate 30. 32. A second spring 33 sleeved on the arc-shaped rod 32, a second slider 34 sleeved on the arc-shaped rod 32 and abutting against the second spring 33, and two ends of the arc-shaped plate 30 and a panel A support plate 35 between 13; the second slider 34 is provided with a hook, and the hook protrudes from the through groove 31 and is connected to the lower end of the lute string.

In one embodiment, the convex ring 24 and the outer shaft 22 are integrated. In another embodiment, the convex ring 24 is an annular structure that is sleeved on the outer shaft 22 and is threadedly connected thereto.

In an embodiment as shown in FIG. 3, the outer diameter of the snap ring 252 is larger than the second inner cavity 225 to prevent the snap ring 252 from being drawn into the second inner cavity 225.

In an embodiment, the indicator light 271 is an LED light, and at least two colors of LED light-emitting chips are integrated in the indicator light 271. Different colors of light are used to prompt different information, and the number of indicators 271 can be reduced. .

In an embodiment as shown in FIG. 2, a scale 231 is provided on the knob 23, and a scale reference object, such as a zero-degree scale line, is correspondingly provided on the outer shaft 22.

In an embodiment as shown in FIG. 3, the end of the inner shaft 25 and the knob 23 connected to each other is provided with a colored ring 253 of the same width, and the width of one colored ring 253 is the length of the shaft displacement during one rotation of the knob 23 Is used to indicate the number of turns of the knob 23.

In an embodiment shown in FIG. 5, the connector 251 includes a housing 2511 provided with a sliding groove 2513 in the axial direction of the inner cavity, and a first spring 2512 provided in the housing 2511. The inner shaft 25 is It is sleeved with the first spring 2512, and the first slider 257 and the sliding groove 2513 are connected to each other; the two ends of the first spring 2512 are in contact with the housing 2511, the inner shaft 25, and the housing 2511 is connected with the torque sensor 26. Interconnected.

In one embodiment, in order not to affect the function of the sound hole as much as possible, and at the same time to increase the firmness of the arc-shaped plate 30 and the face plate 13, the support plate 35 is made of a mesh plate.

The controller 27 is electrically connected to the battery 29, the control button 28, the indicator light 271, and the torque sensor 26, respectively.

When tuning, connect the lower end of the lute string with the second slider 34, and the upper end of the lute string penetrates the first through hole 221 and the third through hole 256 in sequence, and apply pressure to the knob 23 to drive the inner shaft 25 to axially displace and cause the The ring 252 is disengaged from the internal tooth shape 222, and the inner shaft 25 is quickly rotated to wind the lute string until the string is approximately straight. The lute string is pulled by using the thread connection between the first internal thread 226 and the external thread 254 to adjust the tightness.

Due to the release of the pressure on the knob 23, the snap ring 252 is axially displaced and engages with the internal tooth shape 222 and the axial displacement of the inner shaft 25 caused by continuing to rotate the knob 23, the lute string is tilted and acts on the cut surface of the inner shaft 25 The force is divided into a component force that is axially parallel to the inner shaft 25 and a component force that is radially parallel to the inner shaft 25. The component force parallel to the axial direction of the inner shaft 25 cannot rotate the inner shaft 25. A frictional force is generated between an internal thread 226 and an external thread 254, and the frictional force cancels a component force radially parallel to the internal shaft 25, thereby generating self-locking. To remove the lute string, proceed in reverse order.

The intelligent tuning and fixing device for a lute according to the present invention includes a fine tuning peg set on the upper end of the lute body, and an elastic hand cover provided on a panel of the pipa body, wherein the fine tuning string is connected to the lute through the outer shaft. The body is fixed, the upper end of the lute string is penetrated into the external shaft and connected to the internal shaft. The connection between the external tooth shape and the internal tooth shape can be loosened by the internal pressure knob. The internal shaft can be quickly turned to wind the lute string. The pressure on the outer tooth meshes with the inner tooth shape, and continues to rotate the inner shaft. The inner shaft is threaded to the outer shaft and pulls the lute string for fine adjustment. During the fine adjustment, the internal axis displacement causes the lute string to tilt, so that it acts on the tangential direction of the internal axis. The force on the shaft is reduced, and a friction force is generated between the first internal thread and the external thread to offset the force acting in the tangential direction of the internal shaft to form a self-locking. At the same time, the internal shaft and the torque sensor are connected to measure the torque on the internal shaft. After the controller is transformed into the stress on the lute string, it will indicate whether the stress value is within the acceptable range through the indicator light; the elastic cover will use the elastic force of the spring to maintain the axial stress on the lute string. Lute prevent elastic deformation becomes slack string; reasonable structure, simple in structure, easy to use, safe, reliable, fixed fastening intelligence advantages, effective solution to conventional Its strings can not be easily fine-tune the problem.

Taking the above-mentioned ideal embodiment according to the present invention as a revelation, through the above-mentioned description content, the related staff can make various changes and modifications within the scope of not departing from the technical idea of the present invention. The technical scope of this invention is not limited to the content of the description, and its technical scope must be determined according to the scope of the claims.

Claims

An intelligent tuning and fixing device for a lute, which is characterized by comprising a fine tuning peg (2) provided on the upper end of the lute body (1), and an elastic cover provided on a panel (13) of the lute body (1). A hand (3), the fine tuning chord shaft (2) includes an outer shaft (22), an inner shaft (25), and an intelligent control mechanism (20); one end of the outer shaft (22) is a tapered structure, and the outer shaft The other end of the (22) is a cylindrical structure. The outer shaft (22) has a cylindrical structure at one end and is provided with a first cavity (224). The outer shaft (22) has a conical structure at one end and is provided with a circular structure. The second inner cavity (225);

The first inner cavity (224) and the second inner cavity (225) communicate with each other, and the junction of the first inner cavity (224) and the second inner cavity (225) is on an inner wall near one end of the first inner cavity (224). An internal tooth shape (222) is provided in the circumferential direction. A first internal thread (226) is provided on the inner wall of the end of the connection between the first internal cavity (224) and the second internal cavity (225) near the second internal cavity (225); 22) A convex ring (24) and a knob (23) are provided on one end of the outer wall near the tapered structure, and the other end of the outer shaft (22) is provided with a first through hole (221) that communicates with the first inner cavity (224). ), The second through hole (223);

One end of the outer shaft (22) has a cylindrical structure and passes through the shaft holes (11) on both sides of the chord groove (12) in sequence, and is locked by an end cover (21) provided on one end surface of the pipa body (1). , The convex ring (24) and the other end surface of the lute body (1) abut each other;

One end of the inner shaft (25) is axially provided with a first slider (257) and a third through hole (256), and the other end of the inner shaft (25) is provided with a baffle plate (255) and a first inner thread. (226) An external thread (254) and a snap ring (252) that are screwed to each other; the outer wall surface of the snap ring (252) is provided with an external tooth shape (259) and a snap ring that mesh with the internal tooth shape (222). (252) is provided with a second internal thread (258) which is screwed with the external thread (254);

The intelligent control mechanism (20) includes a torque sensor (26), a controller (27), a battery (29), a control button (28), and a second through hole provided in the first inner cavity (224). Indicator light (271) in (223); one end of the inner shaft (25) is connected to the torque sensor (26) through a connector (251), and the other end of the inner shaft (25) passes through the first inner cavity ( 224), the second inner cavity (225) and the knob (23) are fixedly connected to each other; the end cover (21) is provided with a fourth through hole (211), and the control button (28) is from the fourth through hole ( 211) reach out;

The elastic hand covering (3) includes an arc-shaped plate (30) connected to the panel (13), a through groove (31) provided on the arc-shaped plate (30), and a lower portion of the arc-shaped plate (30). An arc-shaped rod (32), a second spring (33) sleeved on the arc-shaped rod (32), a second slide sleeved on the arc-shaped rod (32) and abutting against the second spring (33) A block (34) and a support plate (35) arranged between the two ends of the arc-shaped plate (30) and the panel (13); the second slider (34) is provided with a hook, and the hook is provided from the through groove ( 31).
The intelligent tuning and fixing device for a lute according to claim 1, characterized in that the convex ring (24) and the outer shaft (22) are an integral structure or the convex ring (24) is An annular structure is sleeved on the outer shaft (22) and is screwed with the annular structure.
The intelligent tuning and fixing device for a pipa according to claim 1, wherein the outer diameter of the retaining ring (252) is larger than the second inner cavity (225).
The intelligent tuning and fixing device for a lute according to claim 1, characterized in that: the indicator light (271) is an LED light, and at least two colors of the indicator light (271) are integrated in the indicator light (271). LED light emitting chip.
The intelligent tuning and fixing device for the lute according to claim 1, characterized in that: the knob (23) is provided with a scale (231), an inner shaft (25) and a knob (23) The connected ends are provided with colored rings (253) of the same width.
The intelligent tuning and fixing device for a lute according to claim 1, wherein the connector (251) comprises a housing (2511) provided with a sliding groove (2513) in the axial direction of the inner cavity. ), A first spring (2512) provided in the housing (2511), the inner shaft (25) is sleeved with the first spring (2512), and the first slider (257) and the slide groove (2513) are mutually Connection; the two ends of the first spring (2512) are in contact with the housing (2511) and the inner shaft (25) respectively, and the housing (2511) is connected with the torque sensor (26).
The intelligent tuning and fixing device for a lute according to claim 1, characterized in that the support plate (35) is made of a mesh plate.
The intelligent tuning and fixing device for the lute according to claim 1, characterized in that the controller (27) is separately connected to the battery (29), the control button (28), and the indicator light (271). ), The torque sensors (26) are electrically connected to each other.