CN114067772B - Internet-based music teaching dedicated music metronome - Google Patents
Internet-based music teaching dedicated music metronome Download PDFInfo
- Publication number
- CN114067772B CN114067772B CN202210043371.2A CN202210043371A CN114067772B CN 114067772 B CN114067772 B CN 114067772B CN 202210043371 A CN202210043371 A CN 202210043371A CN 114067772 B CN114067772 B CN 114067772B
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- plate
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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
- G10H1/36—Accompaniment arrangements
- G10H1/40—Rhythm
-
- G—PHYSICS
- G04—HOROLOGY
- G04F—TIME-INTERVAL MEASURING
- G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
- G04F5/02—Metronomes
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B15/00—Teaching music
Abstract
The invention relates to the technical field of metronomes, and discloses a music metronome special for internet-based music teaching. Can stabilize the support to the top main part through supporting mechanism, prevent that it from receiving external force influence and appearing rocking and toppling over the phenomenon in the use, improved stability and security in the main part use, through two fixture of relative distribution, can shorten the dismouting time of apron, the apron is dismantled the back, and easy user overhauls main part internals, has solved the difficult problem that current apron is not convenient for to dismantle.
Description
Technical Field
The invention relates to the technical field of metronomes, in particular to a music metronome special for music teaching based on the Internet.
Background
The metronome is a mechanical, electric or electronic device which can give out a stable beat at various speeds, the metronome is pyramid-shaped, the interior is a clock structure, and has gears and a clockwork spring to drive a swing rod, the swing rod can give out sharp 'dripping' sound at the end of each swing, the speed of the dripping sound can move up and down a pendulum bob according to a vernier scale carved on the swing rod to adjust the speed, the speed is 40-210 beats per minute, the mechanical metronome is made according to the pendulum principle, the clockwork spring is arranged in the mechanical metronome to drive, the vernier code on the swing rod can be adjusted up and down to adjust the speed, and is contrasted with the scale on a panel, the times of the back and forth swing per minute can be known, in the piano teaching, if the metronome can be given enough attention, and the metronome can be reasonably and moderately used, the effect of half-time result can be obtained, in the internet music teaching process, students need to be assisted by the music metronome, is easy to be used practically.
Current metronome is when using, and the bottom lacks stable bearing structure on the one hand, appears rocking and empting the phenomenon easily after receiving external force influence, and on the other hand is difficult to carry out quick assembly disassembly to the apron, and the person of not being convenient for overhauls metronome internals. Accordingly, those skilled in the art have provided a music metronome dedicated for internet-based music teaching to solve the problems set forth in the background art described above.
Disclosure of Invention
The invention aims to provide a music metronome special for music teaching based on the internet, which can stably support an upper main body through a support mechanism, prevent the main body from shaking and toppling over due to the influence of external force in the using process, improve the stability and safety of the main body in the using process, prevent the normal training rhythm of a user from being disturbed, prolong the service life of the main body, and is easy to adjust and convenient for practical use.
In order to achieve the purpose, the invention provides the following technical scheme:
a music metronome special for internet-based music teaching comprises a main body, wherein a scale plate is arranged on the front surface of the main body, a swing rod is further mounted on the main body, a spring rod is embedded and mounted on one side of the main body, a groove is formed in the rear surface of the main body, a cover plate is movably mounted in the groove, a supporting seat is fixedly connected to the bottom of the main body, two limiting grooves are transversely formed in the supporting seat, a supporting mechanism is further mounted in the supporting seat, two accommodating grooves communicated with the groove are formed in the main body, and clamping mechanisms are mounted in the two accommodating grooves;
the supporting mechanism comprises a servo motor, a cam, a first support, a second support, a first fastening plate, a first supporting plate, jacks, a second fastening plate, a second supporting plate and chutes, the cam is connected to the driving end of the servo motor, the first support and the second support are respectively and movably connected to the two ends of the cam, the first fastening plate is movably connected to one end of the first support, the first supporting plate is fixedly connected to the first fastening plate, the second fastening plate is movably connected to one end of the second support, the second supporting plate is fixedly connected to the second fastening plate, the front surface and the rear surface of the first fastening plate and the front surface of the second fastening plate are fixedly connected with limiting blocks, the chutes penetrate through the inner parts of the first supporting plate and the second supporting plate, and a plurality of groups of jacks are uniformly arranged on the upper surfaces of the first supporting plate and the second supporting plate away from the two sides of the chutes;
fixture includes fixed block, threaded rod, nonrust steel pipe, spacing support, second spring and grip block, the rigid coupling has the fixed block on its self length direction is followed to the one end of threaded rod, and the other end of threaded rod has cup jointed nonrust steel pipe along its self length direction upward screw thread, and the one end rigid coupling of nonrust steel pipe has spacing support, and swing joint has the grip block of two opposite extensions on the spacing support, is connected with the second spring between grip block and the spacing support.
As a still further scheme of the invention: stopper sliding connection is in the inside of spacing groove, and the equal movable mounting of first mounting plate and second mounting plate is in the inside of supporting seat, and the servo motor rigid coupling is in the inside center department of supporting seat.
As a still further scheme of the invention: the first supporting plate activity runs through one side of supporting seat and extends to the outside department of supporting seat, and the second supporting plate activity runs through the opposite side of supporting seat and extends to the outside department of supporting seat, and the length of first support and second support equals, and first support and second support parallel distribution.
As a still further scheme of the invention: the inside sliding connection of spout has the slide bar, and the top rigid coupling of slide bar has the regulating plate, and the bottom activity of slide bar has cup jointed first connection board, and the bottom rigid coupling of slide bar has the second connection board, and the equal rigid coupling in bottom both sides edge of regulating plate has the inserted block, is connected with first spring between first connection board and the second connection board, and the bottom rigid coupling of second connection board has the supporting legs.
As a still further scheme of the invention: the supporting legs are of an L-shaped structure, the first connecting plate is abutted against the lower surface of the first supporting plate, the diameter of the inserting block is smaller than that of the inserting hole, and the inserting block is located right above the inserting hole.
As a still further scheme of the invention: spacing support is the cuboid structure, and spacing support sliding connection accomodates the inside in groove, accomodates the groove and be right angle trapezoidal form.
As a still further scheme of the invention: the threaded rod activity runs through the lateral wall of main part and extends to the inside of accomodating the groove, and fixed block, threaded rod, nonrust steel pipe, spacing support, second spring and grip block all use the axis of apron to be the symmetric distribution as the benchmark.
As a still further scheme of the invention: two the equal body coupling of one end of grip block has arc portion, and arc portion activity is supported and is leaned on the lateral wall of apron, two still the rigid coupling has the plastic block of triangle-shaped shape on the grip block.
Compared with the prior art, the invention has the beneficial effects that:
1. the upper main body can be stably supported through the supporting mechanism, the phenomenon of shaking and toppling over caused by the influence of external force in the using process of the main body is prevented, the stability and the safety of the main body in the using process are improved, the normal training rhythm of a user is prevented from being disturbed, the service life of the main body is prolonged, and the supporting mechanism is easy to adjust and convenient to use in practice;
2. through the fixture of two relative distributions, can convenient to use person fix the apron in the recess fast, also can conveniently shift out the apron in by the recess fast simultaneously, shortened the dismouting time of apron, apron dismantlement back, easily user overhauls main part internals, has solved the difficult problem that current apron is not convenient for dismantle.
Drawings
Fig. 1 is a schematic structural diagram of a music metronome dedicated for internet-based music teaching;
fig. 2 is a schematic structural diagram of a supporting mechanism in a music metronome dedicated for internet-based music teaching;
FIG. 3 is a schematic view of an installation structure of a plug block and a jack in a music metronome for internet-based music teaching;
fig. 4 is a schematic view showing the construction of a first connector tile and a second connector tile in a music metronome for internet-based music education;
fig. 5 is a rear view of a music metronome dedicated for internet-based music teaching;
fig. 6 is a schematic diagram of an internal structure of a music metronome dedicated for internet-based music teaching.
In the figure: 1. a main body; 11. a scale plate; 12. a swing rod; 13. a spring rod; 14. a groove; 15. a cover plate; 16. a receiving groove; 2. a supporting seat; 21. a limiting groove; 3. a support mechanism; 31. a servo motor; 32. a cam; 321. a first bracket; 322. a second bracket; 33. a first fastening plate; 34. a first support plate; 341. a slide bar; 342. an adjusting plate; 343. inserting a block; 344. a first connector tile; 345. a first spring; 346. a second connector tile; 347. supporting legs; 35. a jack; 36. a second fastening plate; 37. a second support plate; 38. a chute; 39. a limiting block; 4. a clamping mechanism; 41. a fixed block; 42. a threaded rod; 43. a stainless steel tube; 44. a limiting support; 45. a second spring; 46. and (4) clamping the plate.
Detailed Description
Example 1
Referring to fig. 1 to 6, a music metronome special for internet-based music teaching comprises a main body 1, a scale plate 11 is arranged on the front surface of the main body 1, a swing rod 12 is further arranged on the main body 1, a spring rod 13 is embedded and arranged on one side of the main body 1, a groove 14 is arranged on the rear surface of the main body 1, a cover plate 15 is movably arranged in the groove 14, a support base 2 is fixedly connected to the bottom of the main body 1, two limit grooves 21 are transversely arranged in the support base 2, a support mechanism 3 is further arranged in the support base 2, the support mechanism 3 comprises a servo motor 31, a cam 32, a first support 321, a second support 322, a first fastening plate 33, a first support plate 34, a jack 35, a second fastening plate 36, a second support plate 37 and a slide groove 38, the cam 32 is connected to a driving end of the servo motor 31, the two ends of the cam 32 are respectively and movably connected with the first support 321 and the second support 322, one end of the first bracket 321 is movably connected with a first fastening plate 33, the first fastening plate 33 is fixedly connected with a first supporting plate 34, one end of the second bracket 322 is movably connected with a second fastening plate 36, the second fastening plate 36 is fixedly connected with a second supporting plate 37, the front and back surfaces of the first fastening plate 33 and the second fastening plate 36 are fixedly connected with a limiting block 39, sliding grooves 38 are respectively penetrated through the interiors of the first supporting plate 34 and the second supporting plate 37, a plurality of groups of inserting holes 35 are arranged at equal intervals at the positions, far away from the two sides of the sliding grooves 38, of the upper surfaces of the first supporting plate 34 and the second supporting plate 37, the limiting block 39 is slidably connected with the interior of the limiting groove 21, the first fastening plate 33 and the second fastening plate 36 are movably installed inside the supporting seat 2, the servo motor 31 is fixedly connected at the center of the interior of the supporting seat 2, the first supporting plate 34 movably penetrates through one side of the supporting seat 2 and extends to the outer side of the supporting seat 2, the second supporting plate 37 movably penetrates through the other side of the supporting seat 2 and extends to the outer side of the supporting seat 2, the lengths of the first support 321 and the second support 322 are equal, the first support 321 and the second support 322 are distributed in parallel, a sliding rod 341 is slidably connected inside the sliding groove 38, an adjusting plate 342 is fixedly connected to the top end of the sliding rod 341, a first connecting plate 344 is movably sleeved at the bottom of the sliding rod 341, a second connecting plate 346 is fixedly connected to the bottom end of the sliding rod 341, inserting blocks 343 are fixedly connected to both side edges of the bottom of the adjusting plate 342, a first spring 345 is connected between the first connecting plate 344 and the second connecting plate 346, supporting legs 347 are fixedly connected to the bottom of the second connecting plate 346, the supporting legs 347 are in an L-shaped structure, the first connecting plate 344 abuts against the lower surface of the first supporting plate 34, the diameter of the inserting blocks 343 is smaller than that of the inserting holes 35, the inserting blocks 343 are located right above the inserting holes 35, the supporting mechanism 3 can stably support the upper main body 1, and prevent the main body from shaking and toppling over due to the influence of external force in the using process, stability and security in the 1 use of main part have been improved, prevent to disturb user's normal training rhythm, have prolonged the life of self, and this supporting mechanism 3 easily adjusts moreover, makes things convenient for in-service use.
In fig. 6, two accommodating grooves 16 communicating with the groove 14 are formed in the main body 1, the clamping mechanisms 4 are mounted in the two accommodating grooves 16, each clamping mechanism 4 comprises a fixed block 41, a threaded rod 42, a stainless steel tube 43, a limit support 44, a second spring 45 and a clamping plate 46, one end of the threaded rod 42 is fixedly connected with the fixed block 41 along the length direction thereof, the other end of the threaded rod 42 is in threaded sleeve connection with the stainless steel tube 43 along the length direction thereof, one end of the stainless steel tube 43 is fixedly connected with the limit support 44, the limit support 44 is movably connected with the two clamping plates 46 extending oppositely, the second spring 45 is connected between the clamping plate 46 and the limit support 44, the limit support 44 is of a cuboid structure, the limit support 44 is slidably connected in the accommodating groove 16, the accommodating grooves 16 are of a right-angle trapezoid shape, the threaded rod 42 movably penetrates through the side wall of the main body 1 and extends to the inside of the accommodating grooves 16, threaded rod 42 and main part 1 pass through the bearing and rotate the connection, fixed block 41, threaded rod 42, stainless steel pipe 43, spacing support 44, second spring 45 and grip block 46 all use the axis of apron 15 to be the symmetric distribution as the benchmark, the equal body coupling of one end of two grip blocks 46 has arc portion, arc portion activity is supported and is leaned on the lateral wall of apron 15, it has the plastic block of triangle-shaped form still to link firmly on two grip blocks 46, fixture 4 through two relative distributions, can convenient to use person fix apron 15 in recess 14 fast, also can conveniently shift out apron 15 by the recess 14 fast simultaneously, the dismouting time of apron 15 has been shortened, apron 15 dismantles the back, easy to use person overhauls main part 1 internals, the difficult problem of current apron 15 not being convenient for to dismantle has been solved.
When the device is used, the servo motor 31 is controlled to work by the external controller, the servo motor 31 can drive the cam 32 to rotate forward when rotating forward, and further can drive the first support 321 and the second support 322 to move, so as to drive the first fastening plate 33 and the second fastening plate 36 to move relatively, and then can drive the first support plate 34 and the second support plate 37 to move relatively, similarly, the servo motor 31 can drive the cam 32 to rotate backward when rotating backward, and further can drive the first support 321 and the second support 322 to move, so as to drive the first fastening plate 33 and the second fastening plate 36 to move oppositely, and then can drive the first support plate 34 and the second support plate 37 to move oppositely, when the first support plate 34 and the second support plate 37 move to an ideal position, the adjusting plate 342 is held by hand to move upward, so as to drive the sliding rod 341, the second connecting plate 346 and the support foot 347 to move upward, and then the sliding rod 341 is slid forward and backward, after the supporting legs 347 move to the desired position, the adjusting plate 342 is loosened, the inserting block 343 can be inserted into the inserting hole 35 under the action of the first spring 345, so the upper main body 1 can be stably supported by the supporting mechanism 3, the phenomenon of shaking and toppling over caused by external force in the using process is prevented, the stability and safety of the main body 1 in the using process are improved, the normal training rhythm of a user is prevented from being disturbed, the service life of the main body is prolonged, the supporting mechanism 3 is easy to adjust and convenient to use in practice, then the cover plate 15 is placed into the groove 14, then the fixing block 41 is held by a hand to rotate forwards, the threaded rod 42 can be driven to rotate forwards after the fixing block 41 rotates forwards, the stainless steel pipe 43 and the limiting support 44 are driven to move leftwards until the clamping plate 46 abuts against the cover plate 15, and the second spring 45 can be pressed along with the continuous left movement of the limiting support 44, so that the clamping plate 46 is firmly abutted against the cover plate 15, and in the same way, the left limit support 44 can be driven to move to the right, at the same time, the cover plate 15 can be fixed in the groove 14, the fixing block 41 is held to rotate reversely, the threaded rod 42 can be driven to rotate reversely after the fixing block 41 rotates reversely, and then the stainless steel pipe 43 and the limit support 44 are driven to move to the right until the clamping plate 46 is gradually far away from the cover plate 15, and along with the continuous right movement of the limit support 44, the second spring 45 can be gradually restored to the original state, so that the clamping plate 46 is separated from the cover plate 15, and in the same way, the left limit support 44 can be driven to move to the left, and at the same time, the cover plate 15 can be disassembled from the groove 14, so that a user can conveniently and quickly fix the cover plate 15 in the groove 14 through the two clamping mechanisms 4 which are distributed relatively, and the cover plate 15 can be conveniently and quickly moved out from the groove 14, and the disassembling time of the cover plate 15 is shortened, after the cover plate 15 is detached, the internal parts of the main body 1 can be easily overhauled by a user, and the problem that the existing cover plate 15 is inconvenient to detach is solved.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (8)
1. The utility model provides a music metronome based on internet music teaching is special, including main part (1), be provided with scale plate (11) on the front surface of main part (1), and still install pendulum rod (12) on main part (1), one side embedding of main part (1) is installed spring rod (13), and the rear surface of main part (1) is seted up fluted (14), the inside movable mounting of recess (14) has apron (15), a serial communication port, the bottom rigid coupling of main part (1) has supporting seat (2), two spacing grooves (21) have transversely been seted up in the inside of supporting seat (2), and the inside of supporting seat (2) still installs supporting mechanism (3), the inside of main part (1) is seted up two and is accomodate groove (16) with recess (14) intercommunication, two the inside of accomodating groove (16) all installs fixture (4);
the supporting mechanism (3) comprises a servo motor (31), a cam (32), a first support (321), a second support (322), a first fastening plate (33), a first support plate (34), a jack (35), a second fastening plate (36), a second support plate (37) and a chute (38), the cam (32) is connected to a driving end of the servo motor (31), the first support (321) and the second support (322) are movably connected to two ends of the cam (32) respectively, the first fastening plate (33) is movably connected to one end of the first support (321), the first support plate (34) is fixedly connected to the first fastening plate (33), the second fastening plate (36) is movably connected to one end of the second support (322), the second support plate (37) is fixedly connected to the second fastening plate (36), and a limit block (39) is fixedly connected to the front surface and the rear surface of the first fastening plate (33) and the second fastening plate (36), sliding grooves (38) penetrate through the inner parts of the first supporting plate (34) and the second supporting plate (37), and a plurality of groups of inserting holes (35) are formed in the positions, far away from the two sides of the sliding grooves (38), of the upper surfaces of the first supporting plate (34) and the second supporting plate (37) at equal distances;
fixture (4) are including fixed block (41), threaded rod (42), nonrust steel pipe (43), spacing support (44), second spring (45) and grip block (46), the rigid coupling has fixed block (41) on its self length direction is followed to the one end of threaded rod (42), and the other end of threaded rod (42) has cup jointed nonrust steel pipe (43) along its self length direction upward screw thread, and the one end rigid coupling of nonrust steel pipe (43) has spacing support (44), and swing joint has grip block (46) of two opposite extensions on spacing support (44), is connected with second spring (45) between grip block (46) and spacing support (44).
2. The music metronome special for internet-based music teaching as claimed in claim 1, wherein the stopper (39) is slidably connected inside the stopper groove (21), the first fastening plate (33) and the second fastening plate (36) are both movably mounted inside the supporting base (2), and the servo motor (31) is fixedly connected to the center inside the supporting base (2).
3. The music metronome for internet-based music teaching as claimed in claim 1, wherein the first supporting plate (34) movably penetrates one side of the supporting base (2) and extends to the outside of the supporting base (2), the second supporting plate (37) movably penetrates the other side of the supporting base (2) and extends to the outside of the supporting base (2), the first support (321) and the second support (322) have the same length, and the first support (321) and the second support (322) are distributed in parallel.
4. The music metronome special for internet-based music teaching according to claim 1, wherein a sliding rod (341) is slidably connected inside the sliding chute (38), an adjusting plate (342) is fixedly connected to a top end of the sliding rod (341), a first connecting plate (344) is movably sleeved on a bottom of the sliding rod (341), a second connecting plate (346) is fixedly connected to a bottom end of the sliding rod (341), inserting blocks (343) are fixedly connected to both side edges of a bottom of the adjusting plate (342), a first spring (345) is connected between the first connecting plate (344) and the second connecting plate (346), and supporting feet (347) are fixedly connected to a bottom of the second connecting plate (346).
5. The music metronome for internet-based music teaching as claimed in claim 4, wherein the supporting legs (347) have an "L" shape, the first engaging plate (344) abuts on a lower surface of the first supporting plate (34), and the diameter of the insert block (343) is smaller than that of the insertion hole (35), and the insert block (343) is located right above the insertion hole (35).
6. The music metronome special for internet-based music teaching as claimed in claim 1, wherein the limiting support (44) has a rectangular parallelepiped structure, the limiting support (44) is slidably connected inside the storage groove (16), and the storage groove (16) has a right trapezoid shape.
7. The music metronome special for internet-based music teaching as claimed in claim 1, wherein the threaded rod (42) movably penetrates through the side wall of the main body (1) and extends into the interior of the storage groove (16), and the fixing block (41), the threaded rod (42), the stainless steel tube (43), the limiting support (44), the second spring (45) and the clamping plate (46) are symmetrically distributed on the basis of the central axis of the cover plate (15).
8. The music metronome special for internet-based music teaching as claimed in claim 1, wherein an arc portion is integrally connected to each end of the two holding plates (46), the arc portion movably abuts against the outer side wall of the cover plate (15), and a triangular plastic block is further fixedly connected to the two holding plates (46).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210043371.2A CN114067772B (en) | 2022-01-14 | 2022-01-14 | Internet-based music teaching dedicated music metronome |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210043371.2A CN114067772B (en) | 2022-01-14 | 2022-01-14 | Internet-based music teaching dedicated music metronome |
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| CN114067772A CN114067772A (en) | 2022-02-18 |
| CN114067772B true CN114067772B (en) | 2022-03-22 |
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| DE2007680A1 (en) * | 1970-02-19 | 1971-09-09 | Wittner R | Device for measuring musical or medical time |
| CN207833239U (en) * | 2018-02-11 | 2018-09-07 | 高雄 | A kind of learning music metronome |
| CN208126690U (en) * | 2018-02-11 | 2018-11-20 | 高雄 | A kind of music learning metronome |
| CN208421543U (en) * | 2018-04-19 | 2019-01-22 | 房婷 | A kind of convenient and practical music metronome |
| CN211124507U (en) * | 2020-01-13 | 2020-07-28 | 覃雅 | Metronome is used in special student's music class study |
| CN212160380U (en) * | 2020-07-01 | 2020-12-15 | 张梦琪 | Metronome is used in music teaching |
| CN213987187U (en) * | 2021-01-07 | 2021-08-17 | 东营职业学院 | Convenient and practical music metronome |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9251776B2 (en) * | 2009-06-01 | 2016-02-02 | Zya, Inc. | System and method creating harmonizing tracks for an audio input |
-
2022
- 2022-01-14 CN CN202210043371.2A patent/CN114067772B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2007680A1 (en) * | 1970-02-19 | 1971-09-09 | Wittner R | Device for measuring musical or medical time |
| CN207833239U (en) * | 2018-02-11 | 2018-09-07 | 高雄 | A kind of learning music metronome |
| CN208126690U (en) * | 2018-02-11 | 2018-11-20 | 高雄 | A kind of music learning metronome |
| CN208421543U (en) * | 2018-04-19 | 2019-01-22 | 房婷 | A kind of convenient and practical music metronome |
| CN211124507U (en) * | 2020-01-13 | 2020-07-28 | 覃雅 | Metronome is used in special student's music class study |
| CN212160380U (en) * | 2020-07-01 | 2020-12-15 | 张梦琪 | Metronome is used in music teaching |
| CN213987187U (en) * | 2021-01-07 | 2021-08-17 | 东营职业学院 | Convenient and practical music metronome |
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| CN114067772A (en) | 2022-02-18 |
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