CN112133268B - String pressing mechanism and automatic playing device applied by same - Google Patents
String pressing mechanism and automatic playing device applied by same Download PDFInfo
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- CN112133268B CN112133268B CN202010851451.1A CN202010851451A CN112133268B CN 112133268 B CN112133268 B CN 112133268B CN 202010851451 A CN202010851451 A CN 202010851451A CN 112133268 B CN112133268 B CN 112133268B
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H1/00—Details of electrophonic musical instruments
- G10H1/02—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos
- G10H1/04—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos by additional modulation
- G10H1/053—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos by additional modulation during execution only
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10D—STRINGED MUSICAL INSTRUMENTS; WIND MUSICAL INSTRUMENTS; ACCORDIONS OR CONCERTINAS; PERCUSSION MUSICAL INSTRUMENTS; AEOLIAN HARPS; SINGING-FLAME MUSICAL INSTRUMENTS; MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR
- G10D3/00—Details of, or accessories for, stringed musical instruments, e.g. slide-bars
- G10D3/12—Anchoring devices for strings, e.g. tail pieces or hitchpins
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10D—STRINGED MUSICAL INSTRUMENTS; WIND MUSICAL INSTRUMENTS; ACCORDIONS OR CONCERTINAS; PERCUSSION MUSICAL INSTRUMENTS; AEOLIAN HARPS; SINGING-FLAME MUSICAL INSTRUMENTS; MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR
- G10D3/00—Details of, or accessories for, stringed musical instruments, e.g. slide-bars
- G10D3/14—Tuning devices, e.g. pegs, pins, friction discs or worm gears
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H3/00—Instruments in which the tones are generated by electromechanical means
- G10H3/12—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument
- G10H3/14—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument using mechanically actuated vibrators with pick-up means
- G10H3/18—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument using mechanically actuated vibrators with pick-up means using a string, e.g. electric guitar
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Abstract
The invention discloses a string pressing mechanism and an automatic playing device applied by the same, the string pressing mechanism comprises a support body fixed relative to a musical instrument body and a plurality of string pressing components arranged above strings, each string pressing component comprises a motor and a first slide rail which are arranged on the support body, a string pressing module which is arranged on the first slide rail in a sliding way and a belt component driven by the motor, the belt assembly comprises a belt and a pulley, the first slide rail and the belt are arranged in parallel to the strings, the string pressing module is connected with the belt, the motor controls the belt to adjust the stroke of the string pressing module in the length direction of the strings, each string pressing module comprises a driving device, a module body and string pressing units, the string pressing units correspond to the strings in number and are arranged on the module body, and the driving device is used for driving the string pressing units to press the corresponding strings. The automatic playing device employs the string pressing mechanism. The invention saves the cost of production materials and reduces the difficulty of structure assembly.
Description
Technical Field
The invention relates to a playing device, in particular to a string pressing mechanism and an automatic playing device applied by the string pressing mechanism.
Background
Existing stringed instruments such as guitars or lutes are usually played by plucking and pressing strings, and with the development of machine intellectualization and automation, robotics has gradually come to be applied to the stringed instruments in recent years.
The existing robot for pressing string instruments is provided with an air cylinder mounting base, string pressing air cylinders which correspond to strings of each article of the string instrument such as a guitar one by one are arranged on the air cylinder mounting base, string striking pads are arranged at the output ends of the string pressing air cylinders, and the strings are struck or pressed through the up-and-down movement of the string pressing air cylinders. The structure has the advantage of quick response, but the defects are obvious, namely, the string pressing operation is carried out by the string pressing air cylinders corresponding to all the pressing parts in number one by one, the number of the string pressing air cylinders is very large, the arrangement is dense, the production material cost of the string pressing robot is increased on one hand, the assembly difficulty of the string pressing robot is increased on the other hand, meanwhile, the weight of the string pressing robot is larger due to more air cylinders, the failure rate is higher, and the string pressing robot is not beneficial to subsequent maintenance and repair.
Disclosure of Invention
In order to overcome the problems of high cost, high assembly difficulty and inconvenient maintenance of the existing string pressing robot, the embodiment of the invention provides a string pressing mechanism, which comprises a support body relatively fixed with a musical instrument body and a plurality of string pressing components arranged above strings, wherein each string pressing component comprises a motor and a first slide rail which are arranged on the support body, a string pressing module which is arranged on the first slide rail in a sliding way and a belt component driven by the motor, the belt assembly comprises a belt and a pulley, the first slide rail and the belt are arranged in parallel to the strings, the string pressing module is connected with the belt, the motor controls the belt to adjust the stroke of the string pressing module in the length direction of the strings, the string pressing module comprises a driving device, a module body and string pressing units, the string pressing units correspond to the strings in number and are arranged on the module body, and the driving device is used for driving the string pressing units to press the corresponding strings.
Further, a vertical cavity for the string pressing unit to be arranged is formed in the module body, and a first opening for the string pressing unit to extend out is formed at the bottom of the vertical cavity.
Further, the string pressing unit comprises an air cylinder and a rubber head arranged at the tail end of an air rod of the air cylinder, the air cylinder is arranged in the vertical cavity, the rubber head extends out of the first opening and is used for pressing the strings, the driving device is an air pump, the module body further comprises a through groove communicated with the vertical cavity and the side face of the module body, the through groove is formed in the side face of the module body to form a second opening, and the through groove is used for placing an air pressure pipe communicated with the air pump.
Furthermore, the module body comprises a first clamping piece and a second clamping piece which are oppositely arranged, the vertical cavity and the through groove are formed between the first clamping piece and the second clamping piece, and the first clamping piece and the second clamping piece are connected through a detachable lock catch.
Furthermore, the string pressing module further comprises a connecting piece and a first sliding block, the connecting piece and the first sliding block are arranged above the module body, the connecting piece is selectively fixed in a plurality of inserting ports which are transversely arranged at the top of the module body through inserting pins, the first sliding block is arranged on the first sliding rail, and the connecting piece of each string pressing assembly is fixed at the corresponding inserting port of the module body, so that the module bodies of all string pressing assemblies are aligned in the horizontal direction.
Furthermore, the connecting piece is formed with the confession in the junction with first slider the first hole of dodging that the belt forward passed, the connecting piece middle part is formed with the confession the second that the belt backward passed dodges the hole, the string die set is dodged hole department and belt fixed connection in the first hole of dodging or the second of dodging of connecting piece.
Furthermore, the string pressing mechanism further comprises second slide rails arranged on two sides of the module body, the module body further comprises support arms correspondingly arranged above the second slide rails, and the support arms are supported above the second slide rails through second slide blocks.
Furthermore, the string pressing mechanism further comprises oppositely arranged U-shaped supports for fixing the pulleys, each U-shaped support comprises a connecting arm positioned above and a mounting beam positioned below, the connecting arms are connected with the support body, the pulleys are mounted between the mounting beams of the oppositely arranged U-shaped supports, and the first sliding rails are fixed between the connecting arms of the oppositely arranged U-shaped supports.
The embodiment of the invention also provides an automatic playing device, which comprises a control system and the string pressing mechanism, wherein the control system is at least used for controlling the motor and the driving device.
Further, the automatic playing device further comprises a string plucking mechanism controlled by the control system, the string plucking mechanism is arranged on a base fixed relative to the musical instrument body, the string plucking mechanism further comprises a plurality of string plucking assemblies controlled by the control system, each string plucking assembly is transversely arranged at a sound cavity of the musical instrument body, each string plucking assembly comprises a steering engine arranged on the base, a connecting arm driven by the steering engine, a limiting stopper fixed relative to the musical instrument body and a plucking piece arranged at the end of the connecting arm, the connecting arm comprises a swing arm arranged at the tail end, the limiting stopper is hinged with the swing arm, the plucking piece is arranged at the end of the swing arm, the bottom end of the plucking piece is close to the corresponding string, so that when the connecting arm is controlled by the steering engine to swing, the swing arm is limited by the limiting stopper to swing back and forth, and drives the plucking piece to move along a first track to pluck the string, the first trajectory comprises a pendulum trajectory.
In the embodiment of the invention, a plurality of string pressing assemblies are arranged above the strings, each string pressing assembly comprises a first slide rail and a belt assembly which are arranged in parallel with the strings, and the string pressing module is arranged on the first slide rail in a sliding way and connected with the belt assembly, the belt assembly is controlled by a motor, so that the string pressing module can move parallel to the strings along with the belt of the belt assembly under the action of the motor, the string pressing module of the same string pressing assembly can move to any length stroke of the strings, and a single string pressing assembly has the condition of pressing a plurality of positions (such as a plurality of guitar products), experiments prove that when two to three string pressing assemblies are adopted by the string pressing mechanism, the playing requirement of musical instruments can be met, the number of string pressing units such as air cylinders can be reduced to 12 or 18, the production material cost of the string pressing mechanism is greatly saved, and the assembly difficulty of the string pressing mechanism is also reduced, simultaneously, the weight of the string pressing mechanism of the embodiment is smaller, the musical instrument can be inclined or vertically arranged as required, the placement and sounding angle of the musical instrument when the musical instrument is played by a person is closer, and finally, the failure rate is reduced by adopting fewer string pressing units, and the follow-up maintenance is facilitated.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a perspective view of a string pressing mechanism of a first embodiment of the present invention;
FIG. 2 is an exploded view of FIG. 2;
FIG. 3 is a perspective view of FIG. 1 with two of the string pressing modules hidden;
FIG. 4 is a perspective view of the module body according to the first embodiment of the present invention;
FIG. 5 is a front view of the first clip of the first embodiment of the present invention;
fig. 6 is a perspective view of an automatic playing device of a second embodiment of the present invention applied to a guitar;
FIG. 7 is a left side view of FIG. 6;
FIG. 8 is a perspective view of a picking assembly according to a second embodiment of the present invention;
FIG. 9 is an exploded view of FIG. 8;
FIG. 10 is a perspective view of FIG. 8 with two of the plucking mechanisms and corresponding lateral supports hidden;
FIG. 11 is a perspective view of the alternate view of FIG. 10;
FIG. 12 is a perspective view of a stop according to a second embodiment of the present invention;
fig. 13 is a perspective view of a steering engine mount according to a second embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
When embodiments of the present invention refer to "first", "second" (if present) etc. ordinal terms, it should be understood that they have been used for distinguishing only when it is clear that the sequence is actually expressed in context.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected" (if present) are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The first embodiment:
referring to fig. 1 to 5, an embodiment of the invention discloses a string pressing mechanism 1, which includes a support body (not shown in the figures) fixed relative to a musical instrument body, and further includes a plurality of string pressing assemblies disposed above strings, each string pressing assembly includes a motor 11 and a first slide rail 12 mounted on the support body, a string pressing module 13 slidably disposed on the first slide rail 12, and a belt assembly 14 driven by the motor 11, the belt assembly 14 includes a belt 141 and a pulley 142, the first slide rail 12 and the belt 141 are disposed parallel to the strings, the string pressing module 13 is connected to the belt 141, the motor 11 controls the belt 141 to adjust a stroke of the string pressing module 13 in a length direction of the strings, each string pressing module 13 includes a driving device (not shown in the figures), a module body 131, and string pressing units (not shown in the figures) disposed on the module body 132 and corresponding to the number of the strings, the driving device is used for driving the string pressing units to press the corresponding strings.
As an example and not by way of limitation, the rack body of the present embodiment may adopt a frame rack body, through which the motor 11 and the first slide rail 12 may be fixedly connected, and the frame rack body may be fixedly installed on the back of the musical instrument or on the central axis, and the specific structure of the rack body is not limited in the present invention.
As a specific implementation solution and not by way of limitation, the module body 131 is formed with a vertical cavity 1311 for the string pressing unit to be disposed therein, and the vertical cavity 1311 is formed with a first opening 1312 for the string pressing unit to extend out from the bottom.
Further, the string pressing unit comprises an air cylinder and a rubber head arranged at the tail end of an air rod of the air cylinder, the air cylinder is arranged in the vertical cavity 1311, the rubber head extends out of the first opening 1312 and is used for pressing the string, the driving device is an air pump, the module body 131 further comprises a through groove 1313 for communicating the vertical cavity with the side face of the module body, the through groove 1313 forms a second opening 1314 on the side face of the module body 131, and the through groove 1313 is used for placing an air pressure pipe communicated with the air pump.
In the embodiment, the through groove 1313 for limiting the air pressure pipe is formed in the module body 131, the air cylinder is arranged in the vertical cavity 1311, and the first opening 1312 of the module body 131 is formed at the bottom of the vertical cavity 1311, so that on one hand, the surrounding structure of the vertical cavity 1311 is favorable for increasing the pressure in the air pressure pipe, and the response speed of the tail rubber head string pressing of the air cylinder is improved, and on the other hand, the preset vertical cavity 1311 and the first opening 1312 also guarantee the precision of the string pressing action and improve the reliability of the string pressing mechanism 1.
The module body 131 includes a first clamping piece 131a and a second clamping piece 131b which are oppositely arranged, the vertical cavity 1311 and the through groove 1313 are formed between the first clamping piece 131a and the second clamping piece 131b, and the first clamping piece 131a and the second clamping piece 131b are connected through a detachable lock catch. Adopt first clamping piece 131a and second clamping piece 131b of detachable hasp connection for the equipment of module body 131 is more firm, has promoted the structural stability, simultaneously, and the later stage of also being convenient for is to the maintenance and the maintenance of pneumatic tube and cylinder, and in this embodiment, first clamping piece 131a and second clamping piece 131b are mirror symmetry structure at least.
Preferably, but not limited to, the string pressing module 13 further includes a connecting member 132 and a first sliding block 133, the connecting member 132 is disposed above the module body 131, the connecting member 132 is selectively fixed in a plurality of insertion ports 1315 transversely arranged on the top of the module body 131 by bolts, the first sliding block 133 is disposed on the first sliding rail 12, and the connecting member 132 of each string pressing assembly is fixed at the corresponding insertion port 1315 of the module body 131, so that the module bodies 131 of all string pressing assemblies are aligned in the horizontal direction.
In this embodiment, three first slide rails 12 are arranged side by side, and the first slide blocks 133 are arranged on the first slide rails 12, and the first slide blocks 133 are inserted and fixed into the corresponding insertion ports 1315 transversely arranged at the top of the module body 131 through the connecting members, so that the module bodies 131 respectively fixed on the three first slide rails 12 can be aligned and arranged in the horizontal direction, the three module bodies 131 can independently slide without affecting each other, and the flexibility of the string pressing mechanism is improved.
As a specific scheme, the connecting member 132 is provided with a first avoiding hole 1321 at a connection position with the first slider 133, through which the belt 141 passes forward, a second avoiding hole 1322 through which the belt passes backward is formed in the middle of the connecting member 132, and the string pressing module 13 is fixedly connected to the belt 141 at the first avoiding hole 1321 or the second avoiding hole 1322 of the connecting member. In the embodiment, the connection member 132 is provided with the avoiding hole 1321 or the second avoiding hole 1322, and the string pressing module 13 is fixedly connected with the belt 141 at the first avoiding hole 1321 or the second avoiding hole 1322 of the connection member, so that on one hand, the volume of the string pressing module 13 is effectively controlled, on the other hand, the belt does not need to pass through the module body 131, the module body 131 is convenient to independently disassemble, and the maintenance and the overhaul of an air pressure pipe and an air cylinder in the module body 131 are also convenient.
The string pressing mechanism 1 further includes second slide rails 15 disposed on two sides of the module body 131, the module body 131 further includes support arms 1316 correspondingly disposed above the second slide rails 15, and the support arms 1316 are supported above the second slide rails 15 through second sliding blocks 134. The second slide rail 15 can provide upward supporting force for the string pressing module 13 on the one hand, and can also assist the first slide rail 12 in providing accurate positioning for the movement of the string pressing module 13 on the other hand, so that the structural stability and reliability of the string pressing mechanism 1 of the embodiment are improved.
As a specific fixing scheme of the motor 11 and the first slide rail 12, the string pressing mechanism 1 further includes oppositely disposed "U" shaped brackets 16 for fixing the pulleys, each "U" shaped bracket 16 includes a connecting arm 161 located above and a mounting beam 162 located below, the connecting arm 161 is connected with the bracket body, the pulley 142 is mounted between the mounting beams 162 of the oppositely disposed "U" shaped brackets, and the connecting arm 161 of the oppositely disposed "U" shaped bracket 16 is used for fixing the first slide rail 12. In the embodiment, the pulleys 142 are arranged between the mounting beams 162 of the U-shaped bracket, and the first slide rail 12 is fixed between the connecting arms 161, so that the overall volume of the string pressing mechanism 1 is effectively controlled, and the motor 11 and the first slide rail 12 are more conveniently and accurately fixed.
In the embodiment of the invention, a plurality of string pressing assemblies are arranged above the strings, each string pressing assembly comprises a first slide rail and a belt assembly which are arranged in parallel with the strings, and the string pressing module is arranged on the first slide rail in a sliding way and connected with the belt assembly, the belt assembly is controlled by a motor, so that the string pressing module can move parallel to the strings along with the belt of the belt assembly under the action of the motor, the string pressing module of the same string pressing assembly can move to any length stroke of the strings, and a single string pressing assembly has the condition of pressing a plurality of positions (such as a plurality of guitar products), experiments prove that when two to three string pressing assemblies are adopted by the string pressing mechanism, the playing requirement of musical instruments can be met, the number of string pressing units such as air cylinders can be reduced to 12 or 18, the production material cost of the string pressing mechanism is greatly saved, and the assembly difficulty of the string pressing mechanism is also reduced, meanwhile, the string pressing mechanism of the embodiment is small in weight, the musical instrument can be inclined or vertically arranged as required, the musical instrument placement and sounding angle when the musical instrument is played by a character is closer, and finally, the failure rate is reduced by adopting fewer string pressing units, and the follow-up maintenance and repair are facilitated.
Second embodiment:
referring to fig. 6 to 13, an embodiment of the present invention further provides an automatic playing device, which includes a control system, and further includes the string pressing mechanism according to the first embodiment, where the control system is at least used for controlling the motor and the driving device.
The existing string plucking mechanism of the automatic playing device achieves the purpose of plucking strings by arranging corresponding string plucking cylinders and support groups at each string, when one string is plucked, two string plucking cylinders which are matched and cooperated and a plurality of supports with specific angles and lengths are generally needed to realize, the structure is relatively complex, the support mounting and positioning difficulty is high, the purchase and maintenance cost is high, and meanwhile, the cylinder adopted for plucking strings has the defect of low response speed, and the accuracy of tones during playing of musical instruments is influenced.
As another object of the present invention, in order to solve the technical problems of relatively complex structure, high difficulty in mounting and positioning the bracket, and low string plucking response speed of the string plucking music robot, the present embodiment further provides a string plucking mechanism controlled by the control system.
The string plucking mechanism is arranged on a base 4 fixed relative to the musical instrument body 3, the string plucking mechanism further comprises a plurality of string plucking assemblies controlled by the control system, each string plucking assembly is transversely arranged at a sound cavity of the musical instrument body 3, each string plucking assembly 2 comprises a steering engine 21 arranged on the base 4, a connecting arm 22 driven by the steering engine 21, a stopper 23 fixed relative to the musical instrument body 3 and a plucking piece 24 arranged at the end part of the connecting arm 22, the connecting arm 22 comprises a front connecting rod 221, a rear connecting rod 222 and a swing arm 223 which are pivoted in sequence, the stopper 23 is hinged with the swing arm 223, the plucking piece 24 is arranged at the end part of the swing arm 223, the bottom end of the plucking piece 24 is close to the corresponding string, so that when the connecting arm 22 is controlled by the steering engine 21 to swing, the swing arm 223 is limited by the stopper 23 to swing in a reciprocating manner, and drives the plucking piece 24 to move along a first track to pluck the string, the first trajectory comprises a pendulum trajectory.
The embodiment of the invention realizes the string plucking operation by adopting the string plucking assemblies transversely arranged at the cavity of the musical instrument body, so that the string plucking operation can be completed in the same vertical plane, one group of string plucking assemblies correspond to one string, the structure of the string plucking assemblies is simplified, and the string plucking precision is also favorably controlled, meanwhile, the string plucking assemblies of the embodiment of the invention comprise a steering engine, a connecting arm driven by the steering engine and a plucking piece arranged at the end part of the connecting arm, a swing arm at the tail end of the connecting arm is hinged with a stopper fixed on the musical instrument body, so that when the connecting arm is controlled by the steering engine to swing, the swing arm is limited by the stopper to swing in a reciprocating manner to drive the plucking piece to move along a first track so as to pluck the string, the height and the position of the plucking piece of the embodiment are limited by the stopper, so that the motion track and the poking direction of the plucking piece can be jointly adjusted by the length of the connecting arm, the height and the position of the stopper and the poking way of the poking piece in a poking manner of poking piece, the connecting arm is simple in structure, the mounting difficulty of the connecting arm is reduced, and the limiting stopper is close to the shifting piece, so that the shifting piece is controlled by the limiting stopper more simply and directly, and an operator can conveniently debug the motion track and the shifting direction of the shifting piece at any time; secondly, the steering engine is adopted to replace an air cylinder in the embodiment, so that the steering engine can directly and rapidly control the swinging of the plectrum, the plectrum can poke the strings for more than two times in one period of the swinging of the steering engine, the response speed is high, the interval is short, and the accuracy of tones is greatly improved when the musical instrument is played; in addition, the first track of the plectrum when plucking the strings is limited by the hinging mode with the limiting stopper, and different string plucking effects can be realized by adopting different hinging modes, so that soft, hard, long or short tones are generated, and the temperament played by the automatic playing device of the embodiment is more vivid and agile.
As a further improvement to the above solution, the plucking assemblies include a first plucking assembly 5, a second plucking assembly 6, and a third plucking assembly 7 located on the right side of the cavity, and a fourth plucking assembly 8, a fifth plucking assembly 9, and a sixth plucking assembly 10 located on the left side of the cavity; first plucking subassembly 5 and sixth plucking subassembly 10 set up relatively, second plucking subassembly 6 and fourth plucking subassembly 8 set up relatively, third plucking subassembly 7 and fifth plucking subassembly 9 set up relatively, stopper 23 is "saying" font, and stopper 23 includes two vertical supports 231 and three horizontal support 232, three horizontal support 232 is located between two vertical supports 231, each horizontal support 232 is located between every two plucking subassemblies that set up relatively and spanes the string, and has seted up two articulated positions 233 on each horizontal support 232 at least, be equipped with on the swing arm 223 of each plucking subassembly with articulated position 233 complex stopper (not shown in the figure), the stopper of every two plucking subassemblies that set up relatively cooperates with corresponding articulated position 233 on the same horizontal support.
In this embodiment, by arranging the string pulling components on two sides of the string oppositely, the overall volume of the string pulling mechanism is saved, the length of the string pulling mechanism is reduced, and the string pulling mechanism is convenient to assemble and disassemble, meanwhile, the embodiment provides the Chinese character 'yu' shaped position limiter, the position limiter 23 comprises two vertical supports 231 and three transverse supports 232, so that each two string pulling components arranged oppositely can be connected to the corresponding hinge position 233 on the same transverse support, so that a position limiter with a relatively large size can simultaneously meet the position limiting requirements of swing arms of all string pulling components, meanwhile, the position limiter with a relatively large size has a relatively large weight, the two vertical supports 231 have a larger contact area with the instrument body 3 or the base 4, the overall structural stability of the string pulling mechanism is improved, redundant vibration caused by the swing of the steering engine 21 is avoided, and noise generated by the redundant vibration on the structure is inhibited, the playing effect of the plucked string instrument of the present embodiment is improved.
As an example and not by way of limitation, the stopper may be a pivot structure, and the hinge portion 233 may be a bearing, so as to minimize the friction between the stopper and the hinge portion 233, and enable the pick 24 to move along the pendulum trajectory.
As a concrete solution and not limiting, the above-mentioned musical instrument body 3 includes a right string set at the right side of the cavity, and a left string set at the left side of the cavity; the plectrum of the string shifting assembly on the right side of the sound cavity is close to the left side of the corresponding string of the right string group, and the plectrum of the string shifting assembly on the left side of the sound cavity is close to the right side of the corresponding string of the left string group. Specifically, taking the guitar of the present embodiment as an example, the first picking assembly 5 is located on the left side of the first string, the second picking assembly 6 is located on the left side of the second string, the third picking assembly 7 is located on the left side of the third string, the fourth picking assembly 8 is located on the right side of the fourth string, the fifth picking assembly 9 is located on the right side of the fifth string, and the sixth picking assembly 10 is located on the right side of the sixth string. The distance that the interval is close to two strings at least between the relative string setting of this embodiment's the group subassembly for can not be because of the motion collision between the swing arm of the string setting subassembly of two relative settings and the plectrum, simultaneously, be close to string left side setting with the plectrum of the group subassembly on sound chamber right side, the plectrum of the left group subassembly of sound chamber is close to the string right side setting, makes the motion trail of plectrum for to both sides motion, has further promoted the reliability of group subassembly.
As a specific scheme but not limited, the base 4 includes a fixing frame 41 fixed to the musical instrument body 3 near the sound cavity, and a plurality of steering engine mounting seats 42 arranged on the fixing frame 41, and the number of the steering engine mounting seats 42 corresponds to the number of the steering engines 21.
Furthermore, the aforesaid mount 41 is "worker" shape mount, the steering wheel mount pad is located the upper surface of "worker" shape mount, steering wheel mount pad 42 includes bottom plate 421 and vertical set up in two preceding arm plates 422 in bottom plate 421 the place ahead and locate the backplate 423 at bottom plate 421 rear, the steering wheel includes the bottom surface and is located the location lug of steering wheel both sides, the bottom surface sets up on the bottom plate 421, the setting of location lug is in on the preceding arm plate 423, steering wheel mount pad 42 forms the breach 424 that supplies the steering wheel pivot to stretch out at least between two preceding arm plates 423. In the embodiment, the steering engine mounting seat 42 is arranged on the I-shaped fixing frame with a relatively wide area, so that the structural stability of the string plucking mechanism can be further enhanced, meanwhile, the steering engine mounting seat 42 is provided with a bottom plate for placing the bottom surface of the steering engine, and positioning lugs for fixing the steering engine are formed on two sides of the notch 424 formed in the position opposite to the rotating shaft of the steering engine, so that the structural stability of the installation of the steering engine is further improved, the noise generated by redundant vibration can be effectively inhibited, and the playing effect of the string plucking instrument of the embodiment is improved.
Preferably, but not limited to, the above-mentioned plectrum 24 is flat and is arranged parallel to the strings, and the plectrum 24 is heart-shaped, drop-shaped or triangular.
The third embodiment:
as an improvement of the string pulling mechanism of the second embodiment, in this embodiment, a first lifting mechanism is further disposed between the "i" shaped fixing frame and the steering engine mounting seat, second lifting mechanisms are disposed on two sides of each horizontal bracket of the "i" shaped stopper on two sides of the vertical bracket, the first lifting mechanism is used for lifting or lowering the height of the steering engine, and the second lifting mechanism is used for lifting or lowering the height of one side or two sides of the horizontal bracket to change the height of the pulling piece. Illustratively, when the control system controls the first lifting mechanism below the steering engine mounting seat of any string shifting assembly to ascend, and simultaneously controls the second lifting mechanism on one side of the transverse support corresponding to the string shifting assembly to ascend so as to raise the height of the plectrum corresponding to the string shifting assembly, the contact area between the plectrum and the string is reduced, the force for shifting the string is smaller, and the device is more favorable for emitting soft tones and short tones.
The fourth embodiment:
as another improvement of the string plucking mechanism of the second embodiment, in this embodiment, the hinge joint includes a limiting chute, the limiting block is a sliding shaft, the middle portion of the swing arm is connected to the limiting chute through the sliding shaft, and when the swing arm swings under the driving of the rear connecting rod, the sliding shaft slides back and forth along the limiting chute along a second track to change the swing fulcrum position of the swing arm.
As a preferable scheme, the limiting sliding groove and the second track are arc-shaped or closed ring-shaped, the first track comprises an upper closed section and a lower closed section which are connected with each other, and the lower closed section is perpendicularly intersected with the corresponding string.
This embodiment is through seting up spacing spout in articulated position, and adopt the sliding shaft as the stopper, make when the swing arm is swung by steering wheel drive, slide with the second orbit in spacing spout because of the stopper, make the first orbit of plectrum be different from the pendulum orbit, the plectrum also changes the adjustment for being similar to the motion that the finger was raised and is dialled at the in-process that is close to the string, the swing strength and the frequency of cooperation steering wheel simultaneously, the size that produces when simulation people hand that can be more lifelike dials the string, the different sound of length.
It should be noted that, as an alternative, the hinge position may further include a guide groove located on an upper side of the limiting sliding groove, and the swing arm may further be provided with a guide block at a position corresponding to the guide groove, and when the guide block is located in the guide groove and slides along the guide groove, the guide block may assist in defining the second trajectory of the limiting block, so that the movement of the paddle is more accurate and reliable.
As the further improvement to this embodiment, "say" the horizontal support of font stopper include installation breach and detachable install in inserted sheet unit on the installation breach, articulated position is seted up on the inserted sheet unit, and the quantity of inserted sheet unit is a plurality of and the shape of the spacing spout of each inserted sheet unit or guide slot, relative position difference for the automatic play device of this embodiment can be changed as required and treat the inserted sheet unit that the music style corresponds when playing different music, in order to reach best performance effect.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. A string pressing mechanism comprises a support body fixed relative to an instrument body and is characterized by further comprising a plurality of string pressing assemblies arranged above strings, wherein each string pressing assembly comprises a motor and a first slide rail which are installed on the support body, a string pressing module which is slidably arranged on the first slide rail and a belt assembly driven by the motor, each belt assembly comprises a belt and a pulley, the first slide rail and the belt are arranged in parallel with the strings, the string pressing module is connected with the belt, the motor controls the belt to adjust the stroke of the string pressing module in the length direction of the strings, each string pressing module comprises a driving device, a module body and string pressing units which are arranged on the module body and correspond to the number of the strings, and the driving device is used for driving the string pressing units to press the corresponding strings;
the module body is internally provided with a vertical cavity for the string pressing unit to be arranged, and the bottom of the vertical cavity is provided with a first opening for the string pressing unit to extend out;
the string pressing unit comprises an air cylinder and a rubber head arranged at the tail end of an air rod of the air cylinder, the air cylinder is arranged in the vertical cavity, the rubber head extends out of the first opening and is used for pressing the strings, the driving device is an air pump, the module body further comprises a through groove for communicating the vertical cavity with the side surface of the module body, the through groove forms a second opening in the side surface of the module body, and the through groove is used for placing an air pressure pipe communicated with the air pump;
the module body comprises a first clamping piece and a second clamping piece which are oppositely arranged, the vertical cavity and the through groove are formed between the first clamping piece and the second clamping piece, and the first clamping piece and the second clamping piece are connected through a detachable lock catch;
the string pressing module further comprises a connecting piece and a first sliding block, the connecting piece and the first sliding block are arranged above the module body, the connecting piece is selectively fixed in a plurality of insertion ports which are transversely arranged at the top of the module body through insertion pins, the first sliding block is arranged on the first sliding rail, and the connecting piece of each string pressing assembly is fixed at the corresponding insertion port of the module body, so that the module bodies of all the string pressing assemblies are arranged in a horizontal direction in an aligned mode;
the connecting piece is provided with a first avoidance hole for the belt to pass through in the forward direction at the joint of the connecting piece and the first sliding block, a second avoidance hole for the belt to pass through in the reverse direction is formed in the middle of the connecting piece, and the string pressing module is fixedly connected with the belt at the first avoidance hole or the second avoidance hole of the connecting piece;
the string pressing mechanism further comprises oppositely arranged 'U' -shaped supports for fixing the pulleys, each 'U' -shaped support comprises a connecting arm located above and an installation beam located below, the connecting arms are connected with the support body, the pulleys are installed between the installation beams of the oppositely arranged 'U' -shaped supports, and the first sliding rails are fixed between the connecting arms of the oppositely arranged 'U' -shaped supports.
2. The string pressing mechanism according to claim 1, wherein the string pressing mechanism further comprises second slide rails disposed on two sides of the module body, and the module body further comprises support arms correspondingly disposed above the second slide rails, and the support arms are supported above the second slide rails through second sliding blocks.
3. An automatic playing apparatus comprising a control system, characterized by further comprising the string pressing mechanism of any one of claims 1 or 2, the control system being adapted to control at least the motor and the driving means.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010851451.1A CN112133268B (en) | 2020-08-21 | 2020-08-21 | String pressing mechanism and automatic playing device applied by same |
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| CN202010851451.1A CN112133268B (en) | 2020-08-21 | 2020-08-21 | String pressing mechanism and automatic playing device applied by same |
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| CN112133268A CN112133268A (en) | 2020-12-25 |
| CN112133268B true CN112133268B (en) | 2022-07-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101145042B1 (en) * | 2005-03-17 | 2012-05-14 | 텍투스 안스탈트 | Device and method for adjusting the tension of a string of a stringed instrument |
| CN205192893U (en) * | 2015-10-27 | 2016-04-27 | 苏州泰斯特测控科技有限公司 | Guitar string bond distance life -span fatigue test device |
| CN106782465B (en) * | 2016-12-20 | 2019-10-18 | 安徽理工大学 | A kind of electronic music performance apparatus of guitar and its circuit |
| CN107127275B (en) * | 2017-06-14 | 2019-02-26 | 北京星海福音琴业有限公司 | A kind of automatic string wrapping machine |
| CN108962198A (en) * | 2018-08-22 | 2018-12-07 | 德阳好哲创意文化科技有限公司 | A kind of high-precision guitar chord regulating device |
| CN109300461B (en) * | 2018-11-27 | 2024-01-05 | 李志枫 | Electronic string instrument |
| CN211124973U (en) * | 2019-09-26 | 2020-07-28 | 黄国民 | But automatic playing formula upright piano action |
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