CN214043077U - High-power Bluetooth CD player - Google Patents
High-power Bluetooth CD player Download PDFInfo
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- CN214043077U CN214043077U CN202121395505.4U CN202121395505U CN214043077U CN 214043077 U CN214043077 U CN 214043077U CN 202121395505 U CN202121395505 U CN 202121395505U CN 214043077 U CN214043077 U CN 214043077U
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- turntable
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Abstract
The utility model relates to a stereo set player field discloses a high-power bluetooth record player. The Bluetooth receiving antenna is electrically connected with the digital-to-analog conversion circuit, a rotating shaft of the motor is connected with a rotating shaft of the turntable, the middle part of a needle rod of the turntable is connected on a suspension, the needle rod can rotate along a connecting point of the needle rod on the suspension as a fulcrum lever, one end of the needle rod, which is provided with a stylus, is positioned outside the suspension, a needle point of the stylus is contacted with a record positioned on the turntable, the other end of the needle rod, which is provided with a magnet, extends into the suspension, the magnet is positioned between two coils of the suspension, audio signals read from the record on the two coils are output to the audio amplification circuit, two input ends of the switching circuit are respectively electrically connected with the audio amplification circuit and the digital-to-analog conversion circuit, and the output end of the switching circuit is electrically connected with the power amplification circuit and the loudspeaker. The record player can be compatible with Bluetooth audio playing, and meets the diversified application requirements of users. And the tone quality has high degree of guarantee.
Description
Technical Field
The utility model relates to a multimedia play field especially relates to a high-power bluetooth record player.
Background
The current records on the market have single function and are difficult to meet the diversified application requirements of users.
Disclosure of Invention
An object of the embodiment of the utility model is to provide a high-power bluetooth record player, this record player can compatible bluetooth audio playback, satisfies user's diversified application demand. And the tone quality has high degree of guarantee.
The embodiment of the utility model provides a pair of high-power bluetooth record player, include:
the device comprises a machine table, wherein a circuit module and a motor are arranged in the machine table, and a turntable head are arranged at the top of the machine table;
the circuit module includes: a control circuit, a Bluetooth receiving antenna, a digital-to-analog conversion circuit, a power amplification circuit and a switching circuit,
the output end of the Bluetooth receiving antenna is electrically connected with the input end of the digital-to-analog conversion circuit, the rotating shaft of the motor is connected with the rotating shaft of the turntable, the control end of the motor is electrically connected with the control circuit, the middle part of the needle rod of the turntable is connected on a suspension, the needle rod can follow the needle rod to perform lever rotation by taking the connecting point of the suspension as a fulcrum, one end of the needle rod, which is provided with a stylus, is positioned outside the suspension, the needle point of the stylus can be contacted with a record positioned on the turntable, the other end of the needle rod, which is provided with a magnet, extends into the suspension, two coils are fixed on the suspension, the magnet is positioned between the two coils, and the two coils are electrically connected with the input end of the audio amplification circuit,
the two input ends of the switching circuit are respectively and electrically connected with the output end of the audio amplifying circuit and the output end of the digital-to-analog conversion circuit, the control end of the switching circuit is electrically connected with the control circuit, the output end of the switching circuit is electrically connected with the input end of the power amplifying circuit, and the output end of the power amplifying circuit is electrically connected with a loudspeaker.
Optionally, an RCA output interface is further disposed on the machine platform, and the output end of the switching circuit is further electrically connected to the RCA output interface.
Optionally, a computer acquisition output interface is further disposed on the machine platform, and the output end of the switching circuit is further electrically connected to the computer acquisition output interface to output data to an external computer.
Optionally, the machine comprises a flat plate as the top of the machine, a bottom shell is arranged at the bottom of the flat plate, the circuit module and the motor are arranged in the bottom shell, the turntable disc and the tone arm installation part are embedded on the flat plate, the bottom of the turntable disc is embedded into the bottom of the flat plate, the rotating shaft of the turntable disc is connected with the rotating shaft of the motor,
the tone arm installation part is provided with a second turntable capable of rotating in the horizontal plane, one end of the tone arm is installed on the second turntable, the tone arm can rotate in the horizontal plane along the center of the turntable, and the tone head is installed at the other end of the tone arm, which can rotate to the upper side of the turntable.
Optionally, the two audio lines and the ground line on the tone head and respectively electrically connected to the two coils extend into the tone arm, penetrate into the bottom case along the tone arm and the second turntable, and are electrically connected to an input terminal of the audio amplifier circuit.
Optionally, the foldable table further comprises a face cover with a downward opening, the rear side of the face cover is hinged to the rear side of the flat plate through at least two hinges, and the face cover can be turned over along the two hinges;
when the surface covers the flat plate, the surface cover covers the flat plate on the whole, and the flat plate and the components on the flat plate cover the lower part of the surface cover.
Optionally, the face cover is a transparent face cover.
Optionally, at least three foot pads are arranged on the bottom surface of the flat plate, the height of each foot pad is equal to or higher than that of the bottom shell,
when the high-power Bluetooth record is placed on a platform, each foot pad is supported on the platform, so that the top surface of the platform is horizontal.
Optionally, the stylus is in the shape of an integrated triangle, and an angular bisector of the triangle facing a vertex angle of the turntable platter is perpendicular to the turntable platter, and the vertex angle contacts the turntable platter when the turntable platter is played.
Optionally, the stylus is in the shape of an isosceles triangle, and the vertex angle facing the turntable is an acute angle.
It is thus clear that, the high-power bluetooth record player of this embodiment of adoption except can broadcasting traditional record, can also broadcast the audio frequency that outside intelligent terminal (for example cell-phone or panel computer etc.) come through bluetooth transmission, satisfies user's diversified demand, has improved record player's application rate. In addition, in the high-power bluetooth record player of this embodiment, the magnet of the record player of this embodiment located in the suspension through the lever-like needle bar makes the electromagnetic field around the magnet change with the up-and-down micro-vibration of the stylus of the other end of the lever, make the electric current of two coils change accordingly, get the audio frequency electric signal of the record on two coils, adopt this record player structure can improve the record audio reading accuracy of the record player, improve the fidelity of the tone quality.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, do not constitute an undue limitation on the invention.
Fig. 1 is a schematic circuit diagram of a high-power bluetooth player according to embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of a pickup in a high-power bluetooth player according to embodiment 1 of the present invention;
fig. 3 is a schematic perspective view of a high-power bluetooth player provided in embodiment 1 of the present invention;
fig. 4 is an exploded schematic view of a high-power bluetooth player according to embodiment 1 of the present invention;
reference numerals:
1: a control circuit; 2: a Bluetooth receiving antenna; 3: a digital-to-analog conversion circuit;
4: a power amplification circuit; 5: a switching circuit; 6: a motor;
7: a record head; 8: an audio amplification circuit; 9: a speaker;
10: RCA output interface; 11: a computer acquisition interface; 12: a sound source selection button;
13: a rotating speed selection key; 32: an acoustic device; 14: a volume adjustment knob;
15: recording; 16: a middle rotating disc; 161: a first rotating shaft;
17: steel balls; 18: a copper sleeve; 19: a turntable;
20: a disc mat; 30: a belt; 31: a cover body;
71: a needle bar; 72: a suspension; 73: a fulcrum;
74: a stylus; 75: a coil; 76: a magnet;
21: a flat plate; 22: a bottom case; 23: a disc;
24: a tone arm mounting section; 25: a tone arm; 26: a second turntable;
27: a face cover; 28: a foot pad; 29: and (7) a hinge.
Detailed Description
The invention will be described in detail with reference to the drawings and specific embodiments, wherein the exemplary embodiments and descriptions are provided to explain the invention, but not to limit the invention.
See fig. 1-4.
This embodiment provides a high-power bluetooth record player, and it mainly includes: the machine as the main body of the CD player is provided with a circuit module and a motor 6 inside, and the top of the machine is provided with a turntable 23 and a record head 7.
The circuit module of the present embodiment includes: the Bluetooth module comprises a control circuit 1, a Bluetooth receiving antenna 2, a digital-to-analog conversion circuit 3, a power amplification circuit 4 and a switching circuit 5, wherein the output end of the Bluetooth receiving antenna 2 is electrically connected with the input end of the digital-to-analog conversion circuit 3.
The rotating shaft of the motor 6 is connected with the rotating shaft of the turntable 23, the control end of the motor 6 is electrically connected with the control circuit 1, the motor 6 rotates at a constant speed at a preset speed under the control of the control circuit 1, and the motor 6 drives the turntable 23 to rotate at a constant speed around the rotating shaft at the center of the turntable 23.
As an illustration of the present embodiment, the turntable 23 of the present embodiment includes a center turntable 16, a first rotating shaft 161 is disposed at the center of the center turntable 16, the first rotating shaft 161 is connected to a rotating shaft of a motor through a copper sleeve 18 with steel balls 17 disposed therein, the center turntable 16 is driven by the motor to rotate around the rotating shaft of the motor in a horizontal plane, the first rotating shaft 161 on the top surface of the center turntable is snap-connected to the bottom of the turntable 19 through a cover 31, the turntable 19 is further fastened to the outer periphery of the center turntable 16 through a belt 30 to rotate along with the center turntable 16, and a turntable pad 20 for placing a record is fixed on the turntable 19. The turntable platter 23 adopting the structure of the embodiment has the advantages that the turntable platter 23 rotates stably and accurately, and the playing fidelity of the turntable platter is favorably improved
The needle bar 71 of the pickup 7 is attached to a suspension 72, the needle bar 71 is rotatable in a lever-like manner in a vertical direction along its attachment point to the suspension 72 as a fulcrum 73, a stylus 74 for reading an audio frequency of a record is fixed to an end of the needle bar 71 projecting outside the suspension 72, the end of the needle bar 71 projecting inside the suspension 72 is provided with a magnet 76, and the needle bar 71 is located between the stylus 74 and the magnet 76 at the fulcrum 73 of the suspension 72. Two coils 75 are fixed to the suspension 72, a magnet 76 is positioned between the two coils 75, and the two coils 75 are electrically connected to the input terminal of the audio amplifier circuit 8.
When playing a record, the bottom end of the stylus 74 lightly abuts against the record, the motor 6 drives the record 23 to rotate, the record rotates along with the record 23, the stylus 74 rotates relative to the record, the stylus 74 vibrates (very slightly) up and down along with the change of the horizontal height of each position of the sound track on the record, under the action of a lever, the magnet 76 at the other end of the needle rod 71 vibrates up and down along with the change of the magnetic field between the two coils 75 (electrified), under the action of electromagnetism, the current output by the two coils 75 changes, the current signals output by the two coils 75 are used as audio electrical signals, the reading of the audio signals of the record is realized, the two coils 75 output the audio signals to the input end of the audio amplifying circuit 8, and the audio amplifying circuit 8 amplifies the power of the input audio signals.
The output end of the digital-to-analog conversion circuit 3 electrically connected with the Bluetooth receiving antenna 2 and the output end of the audio amplification circuit 8 electrically connected with the audio signal of the record head 7 are respectively electrically connected with two input ends of the switching circuit 5, the control end of the switching circuit 5 is electrically connected with the control circuit 1, signal switching is carried out under the control input of the control circuit 1, whether the audio input at the Bluetooth receiving antenna 2 side is connected and output at the output end of the switching circuit 5 or the audio input read at the record head 7 side is connected and output at the output end of the switching circuit 5 is determined, the power amplification circuit 4 and the loudspeaker 9 are electrically connected at the output end of the switching circuit 5 in sequence, the audio signal output by the switching circuit 5 is further power amplified, and high-power playing is carried out at the loudspeaker 9. The loudspeaker 9 of the present embodiment is preferably implemented by a high fidelity loudspeaker, which improves the fidelity of the playback.
Such as but not limited to an 18W high power hi-fi horn as the speaker 9.
As an illustration of the embodiment, a control key may be further disposed on the machine, for example, a sound source selection key 12 is disposed, so that a user can select a currently played sound source through key operation, for example, but not limited to, two sound source selection keys 12 are disposed, corresponding sound sources are respectively marked on the sound source selection key 12, the pressed sound source selection key 12 is used as a current selection of the user, the sound source selection key 12 is electrically connected to an input end of the control circuit 1, when a certain sound source selection key 12 is pressed, the control circuit 1 determines the sound source selected by the current user, the control circuit 1 controls the switching circuit 5 to connect a circuit between the sound source selected by the user and an output end of the switching circuit 5, and disconnect a circuit between another sound source and an output end of the switching circuit 5. The sound source selection key 12 is adopted for selection, and is intuitive, easy to operate and easy to realize.
A rotation speed selection key 13 for controlling the rotation speed of the turntable 23 may also be disposed on the machine, in this embodiment, two speeds (for example, but not limited to, 33 revolutions per minute and 45 revolutions per minute) are set, and similarly, with the pressed key as the current selection of the user, the control circuit 1 controls the motor 6 according to the rotation speed selection key 13 selected by the user, so that the motor 6 drives the turntable 23 to rotate at a constant speed according to the speed corresponding to the currently selected rotation speed selection key 13.
As an illustration of the present embodiment, a volume adjustment knob 14 electrically connected to the control circuit 1 may be further disposed on the machine base to adjust the volume of the speaker 9.
It can be seen from above that, the high-power bluetooth record player of this embodiment of adoption except can broadcasting traditional record, can also broadcast the audio frequency that outside intelligent terminal (for example cell-phone or panel 12 computer etc.) come through bluetooth transmission, satisfies user's diversified demand, has improved record player's application rate. In the high-power bluetooth player of the present embodiment, the pickup 7 of the present embodiment is configured to obtain audio electrical signals of a record on the two coils 75 by changing the electromagnetic field around the magnet 76 by the vertical micro-vibration of the magnet 76 positioned in the suspension 72 via the lever-like needle bar 71 in accordance with the stylus 74 at the other end of the lever, and accordingly, by changing the current of the two coils 75, the accuracy of reading the audio of the record in the player can be improved, and the fidelity of the sound quality can be improved.
As an illustration of this embodiment, the stylus 74 of this embodiment is formed of a rigid or ultra-rigid material. The present embodiment preferably uses an ultra-hard iron material to form the stylus 74, thereby reducing the wear of the stylus 74.
In addition, the present embodiment may be, but is not limited to, the stylus 74 is designed as an integrated triangle, a vertex of the triangle is opposite to the record (i.e. a bisector of the vertex is perpendicular to a horizontal plane of the record), when the record is read, the vertex contacts the record, the stylus 74 with this structure is beneficial to reducing the wear of the stylus 74, ensuring high fidelity reading of the record by the stylus 74, and improving the fidelity of playing the record.
As an illustration of the present embodiment, the stylus 74 of the present implementation may be, but is not limited to being, made of a super hard iron strip.
As an illustration of the present embodiment, the stylus 74 of the present embodiment is in the shape of an isosceles triangle, and the vertex angle of the isosceles triangle is an acute angle, and the vertex angle of the acute angle is taken as an angle facing the turntable 23. The adoption of the structure is beneficial to improving the vibration smoothness of the stylus 74, reducing vibration interference and vibration errors and improving the fidelity of audio.
As an illustration of the present embodiment, the RCA output interface 10 and/or the computer collection interface 11 are connected to the output end side of the switching circuit 5 in the present embodiment, and the RCA output interface 10 and the computer collection interface 11 are preferably disposed on the side surface of the machine platform, and are preferably disposed on the rear side, so as to facilitate connection. Thus, the user can not only play audio in the high-power bluetooth disc player, but also output the currently played audio signal to other audio devices 32 through the RCA output interface 10 for playing, and also output the currently played audio signal to the computer through the computer acquisition interface 11, and digitally store the audio signal through the audio signal processing software on the computer, wherein the storage format may be, but not limited to, MP3 format. By adopting the design, the function diversity of the high-power Bluetooth CD player of the embodiment is further improved, and the diversified requirements of users are further met.
As an illustration of the present embodiment, the machine of the present embodiment includes a plate 12 as a top of the machine, and a bottom shell 22 having an opening covering a bottom of the plate 12 is disposed at a bottom of the plate 12. Wherein the circuit module and the motor 6 are arranged in the bottom shell 22. A turntable disc 23 and a turntable arm 25 mounting part 24 are embedded on the flat plate 12, the bottom of the turntable disc 23 is embedded at the bottom of the flat plate 12, a rotating shaft arranged at the bottom of the turntable disc 23 is connected with a rotating shaft of the motor 6, and the motor 6 drives the turntable disc 23 to rotate. The tone arm 25 is provided with a second turntable 26 rotatable in a horizontal plane on the mounting portion 24, one end of the tone arm 25 is mounted on the second turntable 26, the second turntable 26 rotates horizontally to bring the tone arm 25 into rotation in the horizontal plane about the center of the second turntable 26, and the cartridge 7 is mounted on the other end of the tone arm 25 projecting above the turntable 23. In use, when a record is to be loaded into the turntable platter 23 or a record on the turntable platter 23 is to be taken out, the tone arm 25 may be horizontally rotated to the outside of the turntable platter 23 for user's operation, and the pickup 7 may be protected, and when a record is to be played, the stylus 74 of the pickup 7 on the tone arm 25 may be positioned on the record by rotating the tone arm 25, which is convenient for the user's operation.
As an illustration of the present embodiment, a hollow portion for routing the lines is provided in the tone arm 25, so that the audio lines (generally, a ground line for reducing interference is also provided) electrically connected to the two coils 75 on the tone head 7 at the end of the tone arm 25 extend into the tone arm 25, follow the tone arm 25, and a turntable at the other end of the tone arm 25 to extend into the bottom surface of the flat plate 12, and are electrically connected to the input terminal of the audio amplifier circuit 8 provided in the bottom case 22 at the bottom surface of the bottom plate.
As an illustration of the present embodiment, the high-power bluetooth disc player of the present embodiment further includes a face cover 27 with a downward opening, a rear side of the face cover 27 is hinged to a rear side of the tablet 12 through at least two hinges, and the face cover 27 can be opened and closed along the two hinges. When the cover 27 is attached to the plate 12, the cover 27 covers the entire surface of the plate 12, and the plate 12 and the components on the plate 12 cover the cover 27. The face cover 27 is adopted to protect the components on the flat plate 12, and the dustproof and moistureproof capacity of the high-power Bluetooth player is improved.
As an illustration of the present embodiment, the present embodiment may be, but is not limited to, employing a transparent cover 27. The face cap 27 may be made of, but is not limited to, plastic.
As an illustration of the present embodiment, the flat plate 12 of the present embodiment can be made of, but is not limited to, wood, so as to improve the classic beauty of the product.
As an illustration of the present embodiment, the present embodiment provides a small-sized bottom case 22 according to the size of the circuit module, the motor 6, and the like, and fixes the bottom case 22 to the bottom surface of the flat panel 12.
As an illustration of the present embodiment, at least three pads 28 (four or more, specifically, if necessary) may be disposed on the bottom surface of the flat plate 12, the height of the pads 28 is equal to or higher than the bottom shell 22, and when the high power bluetooth record is placed on the platform, each pad 28 is supported on the platform to provide support for the flat plate 12, so that the flat plate 12 is horizontal.
The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.
Claims (10)
1. A high-power Bluetooth CD player is characterized by comprising:
the device comprises a machine table, wherein a circuit module and a motor are arranged in the machine table, and a turntable head are arranged at the top of the machine table;
the circuit module includes: a control circuit, a Bluetooth receiving antenna, a digital-to-analog conversion circuit, a power amplification circuit and a switching circuit,
the output end of the Bluetooth receiving antenna is electrically connected with the input end of the digital-to-analog conversion circuit, the rotating shaft of the motor is connected with the rotating shaft of the turntable, the control end of the motor is electrically connected with the control circuit, the middle part of the needle rod of the turntable is connected on a suspension, the needle rod can follow the needle rod to perform lever rotation by taking the connecting point of the suspension as a fulcrum, one end of the needle rod, which is provided with a stylus, is positioned outside the suspension, the needle point of the stylus can be contacted with a record positioned on the turntable, the other end of the needle rod, which is provided with a magnet, extends into the suspension, two coils are fixed on the suspension, the magnet is positioned between the two coils, and the two coils are electrically connected with the input end of the audio amplification circuit,
the two input ends of the switching circuit are respectively and electrically connected with the output end of the audio amplifying circuit and the output end of the digital-to-analog conversion circuit, the control end of the switching circuit is electrically connected with the control circuit, the output end of the switching circuit is electrically connected with the input end of the power amplifying circuit, and the output end of the power amplifying circuit is electrically connected with a loudspeaker.
2. The high power Bluetooth (R) jukebox of claim 1,
and an RCA output interface is also arranged on the machine table, and the output end of the switching circuit is also electrically connected with the RCA output interface.
3. The high power Bluetooth (R) jukebox of claim 1 or claim 2,
the machine table is also provided with a computer acquisition output interface, and the output end of the switching circuit is also electrically connected with the computer acquisition output interface so as to output data to an external computer.
4. The high power Bluetooth (R) jukebox of claim 1 or claim 2,
the machine table comprises a flat plate serving as the top of the machine table, a bottom shell is arranged at the bottom of the flat plate, the circuit module and the motor are arranged in the bottom shell, the turntable disc and the tone arm installation part are embedded on the flat plate, the bottom of the turntable disc is embedded into the bottom of the flat plate, the rotating shaft of the turntable disc is connected with the rotating shaft of the motor,
the tone arm installation part is provided with a second turntable capable of rotating in the horizontal plane, one end of the tone arm is installed on the second turntable, the tone arm can rotate in the horizontal plane along the center of the turntable, and the tone head is installed at the other end of the tone arm, which can rotate to the upper side of the turntable.
5. The high power Bluetooth (R) jukebox of claim 4, wherein,
the two audio lines and the ground wire which are arranged on the record head and are respectively electrically connected with the two coils extend into the record arm, are shot into the bottom shell along the record arm and the second turntable and are electrically connected with one input end of the audio amplifying circuit.
6. The high power Bluetooth (R) jukebox of claim 4, wherein,
the rear side of the surface cover is hinged with the rear side of the flat plate through at least two hinges, and the surface cover can turn over along the two hinges;
when the surface covers the flat plate, the surface cover covers the flat plate on the whole, and the flat plate and the components on the flat plate cover the lower part of the surface cover.
7. The high power Bluetooth (R) jukebox of claim 6, wherein,
the face cover is a transparent face cover.
8. The high power Bluetooth (R) jukebox of claim 4, wherein,
at least three foot pads are arranged on the bottom surface of the flat plate, the height of each foot pad is equal to or higher than that of the bottom shell,
when the high-power Bluetooth record is placed on a platform, each foot pad is supported on the platform, so that the top surface of the platform is horizontal.
9. The high power Bluetooth (R) jukebox of claim 1,
the stylus is in an integrated triangular shape, an angular bisector of the triangle, which is over against a vertex angle of the gramophone record, is perpendicular to the gramophone record, and the vertex angle is in contact with the gramophone record when the gramophone record is played.
10. The high power Bluetooth (R) jukebox of claim 9, wherein,
the stylus is in an isosceles triangle shape, and the vertex angle which is opposite to the turntable is an acute angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121395505.4U CN214043077U (en) | 2021-06-22 | 2021-06-22 | High-power Bluetooth CD player |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121395505.4U CN214043077U (en) | 2021-06-22 | 2021-06-22 | High-power Bluetooth CD player |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214043077U true CN214043077U (en) | 2021-08-24 |
Family
ID=77348396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121395505.4U Active CN214043077U (en) | 2021-06-22 | 2021-06-22 | High-power Bluetooth CD player |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214043077U (en) |
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2021
- 2021-06-22 CN CN202121395505.4U patent/CN214043077U/en active Active
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