CN115171740A - Record player capable of automatically adjusting rotating speed - Google Patents
Record player capable of automatically adjusting rotating speed Download PDFInfo
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- CN115171740A CN115171740A CN202210946656.7A CN202210946656A CN115171740A CN 115171740 A CN115171740 A CN 115171740A CN 202210946656 A CN202210946656 A CN 202210946656A CN 115171740 A CN115171740 A CN 115171740A
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- record
- photoelectric sensor
- return
- arm
- player
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/20—Driving; Starting; Stopping; Control thereof
- G11B19/28—Speed controlling, regulating, or indicating
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
- G11B3/02—Arrangements of heads
- G11B3/08—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers
- G11B3/085—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers using automatic means
- G11B3/08503—Control of drive of the head
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
- G11B3/60—Turntables for record carriers
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- Feeding And Guiding Record Carriers (AREA)
Abstract
The invention provides a gramophone capable of automatically adjusting rotating speed, and belongs to the technical field of gramophones. The turntable comprises a turntable support and a rotary tray, wherein the turntable support is provided with a driving device, a turntable assembly, a turntable shaft and an MCU control main board, the rotary tray is detachably sleeved on the turntable shaft, the driving device is movably connected with the rotary tray, the MCU control main board is respectively and electrically connected with the driving device and the turntable assembly, a rotating speed real-time detection device is further arranged between the turntable support and the rotary tray and comprises a speed measuring disc and a photoelectric sensor, the photoelectric sensor is fixedly arranged on the upper surface of the turntable support, the speed measuring disc is fixedly arranged on the lower surface of the rotary tray, the speed measuring disc and the photoelectric sensor are mutually matched, and the photoelectric sensor is electrically connected with the MCU control main board. The beneficial effects of the invention are as follows: need not artifical debugging, the rotational speed control precision is high, and tone quality is difficult for the change tone, has promoted the product quality of record player by a wide margin, has obviously reduced manufacturing cost.
Description
Technical Field
The invention relates to the technical field of record players, in particular to a record player capable of automatically adjusting the rotating speed.
Background
The compact disc (LP for short) is 33 per minute 1 / 3 Records of vinyl (e.g., polyvinyl chloride) material rotating at 45 revolutions or 78 revolutions, typically 12 inches, 10 inches or 7 inches in diameter. Typically, miniaturised discs are recorded in an analogue manner. The microgroove record is made by using a block of material which is relatively soft to make a master disc, and then pouring aluminum metal on the master disc to make a master disc for pressing the disc. By using the master plate, a record manufacturer can repeatedly press the semi-molten blank hard rubber disc into a music record. In addition to standard black materials, special records are also cast on PVC in various colors (red, yellow, green, blue, white, multi-colored, etc.) or "picturedish" with a graphic cardboard sandwiched between the two sides. Various new shapes of records are also constantly emerging. Generally, the market has 33 according to the requirements of the quality of the recorded music 1 / 3 The turntable with three rotating speeds of 45 rpm, 78 rpm needs one electric turntable to pick up the signal in music track, convert weak mechanical vibration signal into electric signal in tracking and tracking mode, amplify and drive loudspeaker to convert into music for people to enjoy.
However, when the record with different rotating speeds is played, the rotating speed of the record player must reach the specified rotating speed of the record, so that the played music can reach the standard sound, and the sound cannot be modulated due to the deviation of the rotating speed. The rotational speed of the motor is adjusted by manually adjusting a variable resistor for controlling the voltage of the motor when the existing record player manufacturers design and manufacture, and the third gear of the rotational speed is realized by switching different gear voltages to the motor through a mechanical switch. The rotating speed of each gear of the motor depends on the voltage supplied to the gear, and due to the error of the variable resistor, the power supply of the motor changes along with the fluctuation of an external power supply and the fluctuation of an internal audio load, so that the rotating speed of the motor deviates accordingly, and the picked sound is modified. The traditional design and production are troublesome, skilled workers are needed to debug the music, and the played music is not standard sound when manual debugging is inaccurate. Thus, the time and labor are wasted, and the quality is not guaranteed.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the record player capable of automatically adjusting the rotating speed, the rotating speed real-time detection device is arranged in the record player, the rotating speed of the rotating tray can be monitored in real time and fed back to the MCU control main board, and then the rotating speed of the rotating tray is automatically adjusted to be 33 1 / 3 The rotating speed is not needed to be adjusted manually, the rotating speed control accuracy is high, tone quality is not prone to changing, the playing stability of the record player is greatly improved, meanwhile, the production cost is reduced, and the problems that in the prior art, the manual adjustment quality of the record player is unstable, the production cost is high, and the rotating speed is prone to being affected and leading to changing are solved.
The invention provides an electric gramophone capable of automatically adjusting the rotating speed, which comprises a gramophone support and a rotating tray, wherein the gramophone support is provided with a driving device, a gramophone head assembly, a gramophone shaft and an MCU control main board, the rotating tray is detachably sleeved on the gramophone shaft, the gramophone shaft can be clamped and provided with a microgroove record, the driving device is movably connected with the rotating tray, the MCU control main board is respectively and electrically connected with the driving device and the gramophone head assembly, a rotating speed real-time detection device is further arranged between the gramophone support and the rotating tray, the rotating speed real-time detection device comprises a speed measuring disc and a photoelectric sensor, the photoelectric sensor is fixedly arranged on the upper surface of the gramophone support, the speed measuring disc is fixedly arranged on the lower surface of the rotating tray, the speed measuring disc and the photoelectric sensor are mutually matched, the photoelectric sensor is electrically connected with the MCU control main board, the rotating speed real-time detection device can monitor the rotating speed of the rotating tray in real-time and feed back the rotating speed of the rotating tray to the MCU control main board, the MCU control main board can automatically adjust the driving device so as to automatically adjust the rotating speed of the rotating tray to be kept at 33 1 / 3 Rpm or 45 rpm or 78 rpm.
The invention is further improved, a plurality of light absorption black grids and a plurality of light reflection white grids are arranged on the bottom surface of the speed measuring disc, the light absorption black grids and the light reflection white grids are alternately and uniformly distributed on the periphery of the bottom surface of the speed measuring disc, and the photoelectric sensor is an emission and absorption integrated photoelectric sensor.
The invention is further improved, the center of the rotating tray is provided with a record supporting assembly, and the upper surface of the record supporting assembly can be higher than the upper surface of the rotating tray and is clamped with a microgroove record.
The disc record supporting assembly is further improved, the disc record adapter is movably clamped in the adapter groove, symmetrical limiting bosses are arranged on the inner side wall of the adapter groove, the disc record adapter is provided with corresponding limiting grooves, when the limiting grooves are aligned with the limiting bosses and clamped, the upper surface of the disc record adapter is not higher than the upper surface of the rotating tray, when the limiting grooves are staggered with the limiting bosses and clamped, the upper surface of the disc record adapter is higher than the upper surface of the rotating tray, and the upper surface of the disc record adapter can be clamped with a microgroove disc.
The invention is further improved, an automatic arm returning device is arranged on the other side of the connection part of the gramophone support and the gramophone assembly, the automatic arm returning device comprises an arm returning motor, an arm returning gear, a returning hook and an arm returning photoelectric sensor assembly, the arm returning motor and the arm returning photoelectric sensor assembly are electrically connected with the MCU control main board, the arm returning motor is meshed with the arm returning gear, the arm returning gear is clamped with the returning hook, the returning hook is clamped with the gramophone assembly, and the MCU control main board can control the arm returning motor to drive the arm returning gear to drive the returning hook to shift the gramophone assembly to an initial static position.
The invention is further improved, the return arm gear is provided with a fixedly connected spiral line, the return arm gear is clamped with the return hook through the spiral line, the bottom of the return arm gear is provided with a fixedly connected stroke end shielding piece, the return arm photoelectric sensor assembly comprises a return arm transmitting photoelectric sensor and a return arm receiving photoelectric sensor, and the stroke end shielding piece can move between the return arm transmitting photoelectric sensor and the return arm receiving photoelectric sensor.
The invention is further improved, the driving device comprises a driving motor and a synchronous conveyor belt, the driving motor is fixedly connected with the gramophone support, and the driving motor is movably connected with the rotary tray through the synchronous conveyor belt.
The invention is further improved, the side wall of the rotating tray is provided with an annular groove, and the synchronous conveyor belt and the rotating tray are movably connected in the annular groove.
The invention is further improved, the record head assembly comprises a record rod seat, a record rod and a record head, the record rod seat is fixedly connected with the record player support, the record rod seat is movably connected with the record rod, the record rod is movably connected with the record head, the record head can be attached to a microgroove record which is clamped and arranged on the record disk shaft, and the record rod seat is electrically connected with the MCU control main board.
The invention is further improved, the gramophone support is also provided with a shockproof adhesive layer, and the shockproof adhesive layer is arranged between the gramophone support and the rotary tray.
Compared with the prior art, the invention has the beneficial effects that: the invention provides a record player capable of automatically adjusting the rotating speed, which is characterized in that a rotating speed real-time detection device is arranged in the record player, the rotating speed of a rotating tray can be monitored in real time and fed back to an MCU control main board, the MCU control main board can automatically regulate and control the output power of a driving device so as to automatically adjust the rotating speed of the rotating tray to be kept at 33 1 / 3 Commentaries on classics/minute or 45 commentaries on classics/minute or 78 commentaries on classics/minute, no longer need artifical debugging rotational speed, the rotational speed control precision is high, and tone quality is difficult for the change tone, has promoted the broadcast stability of record player by a wide margin, has reduced manufacturing cost simultaneously, has solved the problem that record player artifical debugging quality is unstable among the conventional art, manufacturing cost is high, the rotational speed easily receives the influence and leads to the sound change tone. Wherein, through setting up gramophone record axle and record supporting component in the record player, the gramophone record axle can the joint set up the microgroove record of hole diameter size 7.3mm, and the upper surface of record adapter can the joint set up the microgroove record of hole diameter size 38.2mm, simple structure, and convenient operation can realize that a record player can broadcast different hole straight gramophonesA diameter sized record; through set up the automatic arm device that returns in the record player, after MCU control mainboard received the terminal point signal of returning arm photoelectric sensor subassembly feedback and the terminal point signal certain time of record head subassembly feedback, MCU control mainboard can accurate control return arm motor drive return arm gear drive return hook and go into and stir the record head subassembly and get back to initial quiescent position, simple structure need not manual operation, and full automation has promoted the broadcast quality of record player.
Drawings
In order to illustrate the present application or prior art more clearly, a brief description of the drawings needed for the description of the embodiments or prior art will be given below, it being clear that the drawings in the following description are some embodiments of the present application and that other drawings can be derived from them by a person skilled in the art without inventive effort.
Fig. 1 is an exploded view of a structure of a record player capable of automatically adjusting a rotational speed according to the present invention;
FIG. 2 is a schematic structural view of a record support assembly according to the present invention;
fig. 3 is a schematic structural diagram of the automatic arm returning device of the present invention.
In the figure, 1-record player support, 11-drive device, 111-drive motor, 112-synchronous conveyor belt, 12-record head component, 121-record rod seat, 122-record rod, 123-record head, 13-record disk shaft, 14-MCU control main board, 15-shockproof glue layer, 2-rotary tray, 21-microgroove record, 22-record supporting component, 221-adapter groove, 222-record adapter, 223-limit boss, 224-limit groove, 3-rotating speed real-time detection device, 31-speed measuring disk, 32-photoelectric sensor, 4-automatic arm returning device, 41-returning arm motor, 42-returning arm gear, 421-spiral line, 422-stroke end-point shielding piece, 43-returning hook, 44-returning arm photoelectric sensor component, 441-returning arm transmitting photoelectric sensor and 442-returning arm receiving photoelectric sensor.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.
As shown in fig. 1-3, the present invention provides an electric record player capable of automatically adjusting a rotation speed, including a record player support 1 and a rotating tray 2, the record player support 1 is provided with a driving device 11, a record head assembly 12, a record player shaft 13 and an MCU control motherboard 14, the rotating tray 2 is detachably sleeved on the record player shaft 13, the record player shaft 13 can be clamped with a microgroove record 21, the driving device 11 is movably connected with the rotating tray 2, the MCU control motherboard 14 is electrically connected with the driving device 11 and the record head assembly 12, a real-time rotation speed detection device 3 is further provided between the record player support 1 and the rotating tray 2, the real-time rotation speed detection device 3 includes a speed measuring disk 31 and a photoelectric sensor 32, the photoelectric sensor 32 is fixedly disposed on an upper surface of the record player support 1, the speed measuring disk 31 is fixedly disposed on a lower surface of the rotating tray 2, the speed measuring disk 31 and the photoelectric sensor 32 are adapted to each other, the photoelectric sensor 32 is electrically connected with the MCU control motherboard 14, a plurality of black grids and a plurality of light reflecting white grids are disposed on a bottom surface of the speed measuring disk 31, black grids and white grids are alternately uniformly distributed on the speed measuring disk 31, and a circle of the light reflecting grids, and the photoelectric sensor 32 are integrally formed by a light absorbing grid.
Among them, the photoelectric device adopted in the present embodimentThe sensor 32 is an integrated photoelectric sensor integrating light emitting and receiving, and has the advantages of simple structure, stable quality and low cost, and light signals emitted by the photoelectric sensor 32 can reach the light absorption black grid and the light reflection white grid on the bottom surface of the speed measuring disc 31. When the light signal irradiates the light-reflecting white grid, almost all the light signal is reflected back, and the light signal received by the photoelectric sensor 32 is very strong; when the light signal irradiates on the light absorption black grid, the light signal is hardly reflected back, and the light signal received by the photoelectric sensor 32 is extremely weak; then, the photoelectric sensor 32 converts the voltage into high and low voltages to form a pulse signal, the pulse signal is fed back to the MCU control main board 14, the MCU control main board 14 can measure the actual rotating speed of the rotating tray 2 according to the signal, and then the power supply voltage of the driving motor 111 is automatically regulated and controlled, namely the output power of the driving motor 111 is regulated, so that the rotating speed of the rotating tray 2 is automatically regulated and maintained at 33 1 / 3 The rpm or 45 rpm or 78 rpm ensures that the sound picked up from the turntable platter is played accurately without tonal variations.
As shown in fig. 2, the record supporting assembly 22 is disposed at the center of the rotating tray 2, the upper surface of the record supporting assembly 22 can be higher than the upper surface of the rotating tray 2 and can be clamped with the microgroove record 21, the record supporting assembly 22 includes an adapter groove 221 and a record adapter 222, the record adapter 222 is movably clamped in the adapter groove 221, the inner side wall of the adapter groove 221 is provided with symmetrical limit projections 223, the record adapter 222 is provided with corresponding limit grooves 224, when the limit grooves 224 are clamped with the limit projections 223 aligned, the upper surface of the record adapter 222 is not higher than the upper surface of the rotating tray 2, when the limit grooves 224 are clamped with the limit projections 223 staggered, the upper surface of the record adapter 222 is higher than the upper surface of the rotating tray 2, and the upper surface of the record adapter 222 can be clamped with the microgroove record 21; the maximum diameter of the portion of the turntable shaft 13 protruding above the upper surface of the rotating tray 2 is greater than 7.3mm, and the diameter of the upper surface of the record adapter 222 is greater than 38.2mm, and the record adapter is provided with a catch hole for rotational movement. The gramophone record axle 13 and the record adapter 222 that adopt in this embodiment, gramophone record axle 13 can the joint set up the microgroove record of hole diameter size 7.3mm, and the upper surface of record adapter 222 can the joint set up the microgroove record of hole diameter size 38.2mm, and simple structure, convenient operation, stable in quality, it is with low costs, can realize the record of the different hole diameter sizes of record player broadcast.
As shown in fig. 3, an automatic arm returning device 4 is disposed on the other side of the connection between the turntable support 1 and the turntable assembly 12, the automatic arm returning device 4 includes an arm returning motor 41, an arm returning gear 42, a return hook 43, and an arm returning photoelectric sensor assembly 44, the arm returning motor 41 and the arm returning photoelectric sensor assembly 44 are electrically connected to the MCU control main board 14, the arm returning motor 41 is meshed with the arm returning gear 42, the arm returning gear 42 is engaged with the return hook 43, the return hook 43 is engaged with the turntable assembly 12, the arm returning gear 42 is provided with a fixedly connected spiral line 421, the arm returning gear 42 is engaged with the return hook 43 through the spiral line 421, a fixedly connected stroke end blocking plate 422 is disposed at the bottom of the arm returning gear 42, the arm returning photoelectric sensor assembly 44 includes an arm returning light emitting sensor 441 and an arm receiving light receiving photosensor 442, the stroke end blocking plate 422 can move between the arm returning light emitting sensor 441 and the arm receiving photosensor 442, so as to block the reception of light, output a low level signal, and stop the continuous operation of the avoidance motor.
In this embodiment, when the record player plays a record, the record head assembly may drive the return hook of the clamp to move, and further drive the return arm gear to rotate, the stroke end shielding plate moves along with the rotation of the return arm gear, when the stroke end shielding plate moves to a position between the return arm transmitting photoelectric sensor and the return arm receiving photoelectric sensor, the optical signal transmitted by the return arm transmitting photoelectric sensor is shielded, when the return arm receiving photoelectric sensor does not receive the optical signal, it is preliminarily determined that the record has run to a standard record stop point (close to the innermost circle of the record track) and fed back to the MCU control main board, at this time, the record player cannot stop working immediately, the record player stops working, the record head assembly also needs to satisfy another condition, when the MCU control main board monitors that the record player has no sound (the record track has not been found), the MCU control main board determines that the record has been played, at this time, the MCU control main board controls the return arm gear to drive the return hook to move to return the return hook to the initial rest position, thus the record track of the record will not be completely played, and the record track of the record player will not lose its full play efficiency will not only be a little. And the automatic arm returning device can be detached, and when the automatic arm returning function is required, the automatic arm returning device is installed, otherwise, the automatic arm returning device is not installed.
As shown in fig. 1, the driving device 11 includes a driving motor 111 and a synchronous belt 112, the driving motor 111 is fixedly connected to the player support 1, the driving motor 111 is movably connected to the rotating tray 2 through the synchronous belt 112, a circular groove is formed on a side wall of the rotating tray 2, and the synchronous belt 112 and the rotating tray 2 are movably connected to the circular groove. In this embodiment, the annular groove serves to enhance the friction between the timing belt 112 and the rotating tray 2, thereby improving the stability of the electric player.
As shown in fig. 1, the pickup assembly 12 includes a pickup base 121, a pickup 122 and a pickup 123, the pickup base 121 is fixedly connected to the player support 1, the pickup base 121 is movably connected to the pickup 122, the pickup 122 is movably connected to the pickup 123, the pickup 123 can be attached to a microgroove record clamped to a turntable shaft, and the pickup base 121 is electrically connected to the MCU control board 14. In this embodiment, one end of the singing rod 122 is movably connected to the singing rod seat 121, the other end of the singing rod 122 can rotate around the contact point, the pickup head 123 is used for contacting with the microgroove record, collecting and converting weak mechanical vibration signals into voltage signals in a tracking and tracking manner, and then sending the voltage signals to the MCU control motherboard 14 through the singing rod seat 121 and the singing rod 122, and the MCU control motherboard 14 amplifies the signals and then drives the speaker to convert the signals into music.
As shown in fig. 1, the player support 1 is further provided with a vibration-proof adhesive layer 15, and the vibration-proof adhesive layer 15 is disposed between the player support 1 and the rotating tray 2. In this embodiment, the anti-vibration rubber layer 15 is used to reduce the vertical vibration generated during the rotation of the rotating tray 2, thereby improving the stability of the electric player.
In view of the above, the present invention provides a record player capable of automatically adjusting a rotational speed, which is capable of monitoring the rotation of a rotating tray in real time by providing a rotational speed real-time detecting device in the record playerThe speed is fed back to the MCU control mainboard, the MCU control mainboard can automatically regulate and control the output power of the driving device so as to automatically adjust the rotating speed of the rotating tray to be kept at 33 1 / 3 The rotating speed is not needed to be adjusted manually, the rotating speed control accuracy is high, tone quality is not prone to changing, the playing stability of the record player is greatly improved, meanwhile, the production cost is reduced, and the problems that in the prior art, the manual adjustment quality of the record player is unstable, the production cost is high, and the rotating speed is prone to being affected and leading to changing are solved. The gramophone record adapter is characterized in that a gramophone record shaft and a gramophone record supporting assembly are arranged in the gramophone record, the gramophone record shaft can be connected with a microgroove record with the inner hole diameter size of 7.3mm in a clamped mode, the upper surface of the gramophone record adapter can be connected with a microgroove record with the inner hole diameter size of 38.2mm in a clamped mode, the structure is simple, operation is convenient, and the problem that one gramophone record cannot play gramophones with different inner hole diameter sizes can be solved; through set up the automatic arm device that returns in the record player, after MCU control mainboard received the terminal point signal of returning arm photoelectric sensor subassembly feedback and the terminal point signal of record head subassembly feedback the certain time, MCU control mainboard can accurate control return arm motor drive return arm gear drive return arm hook and then stir the record head subassembly and get back to initial quiescent position, simple structure need not manual operation, full automation has promoted the broadcast quality of record player.
The above-described embodiments are intended to be illustrative, and not restrictive, of the invention, and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (10)
1. A gramophone capable of automatically adjusting rotating speed is characterized in that: including record player support and rotatory tray, record player support is equipped with drive arrangement, record player subassembly, record player axle and MCU control mainboard, rotatory tray can dismantle cup joint in record player epaxial, record player axle can the joint set up the microgroove record, drive arrangement with rotatory tray swing joint, MCU control mainboard respectively with drive arrangement record player subassembly electric connection, record player support with still be equipped with rotational speed real-time detection device between the rotatory tray, rotational speed real-time detection device is including testing the speed dish and photoelectric sensor, photoelectric sensor fixed set up in record player support upper surface, the dish that tests the speed is fixed set up in rotatory tray lower surface, test the speed dish with photoelectric sensor adaptation each other, photoelectric sensor with MCU control mainboard electric connection, rotational speed real-time detection device can real-time supervision the rotational speed of rotatory tray and feed back to MCU control mainboard, MCU control mainboard can regulate and control automatically drive arrangement and then automatic adjustment the rotational speed of rotatory tray keeps at 331/3 minute or 45 minutes/minute or 78 minutes.
2. The record player capable of automatically adjusting a rotational speed as claimed in claim 1, wherein: the bottom surface of the speed measuring disc is provided with a plurality of light absorption black grids and a plurality of light reflection white grids, the light absorption black grids and the light reflection white grids are alternately and uniformly distributed on the periphery of the bottom surface of the speed measuring disc, and the photoelectric sensor is an emission and absorption integrated photoelectric sensor.
3. A record player capable of automatically adjusting rotational speed as claimed in claim 2, wherein: the center of the rotating tray is provided with a record supporting assembly, and the upper surface of the record supporting assembly can be higher than the upper surface of the rotating tray and is clamped with a microgroove record.
4. A record player capable of automatically adjusting rotational speed as claimed in claim 3, wherein: record support assembly includes adapter recess and record adapter, record adapter activity joint in the adapter recess, adapter recess inside wall is equipped with the spacing boss of symmetry, record adapter is equipped with the spacing recess that corresponds, works as spacing recess is aimed at during spacing boss joint, record adapter's upper surface is not higher than the upper surface of rotatory tray works as spacing recess staggers during spacing boss joint, record adapter's upper surface exceeds the upper surface of rotatory tray, record adapter's upper surface can the joint set up the microgroove record.
5. The record player capable of automatically adjusting a rotational speed of the disc player as claimed in claim 4, wherein: the gramophone support with the junction another side of gramophone subassembly is equipped with the automatic arm device that returns, the automatic arm device that returns includes back the arm motor, returns arm gear, return hook and returns arm photoelectric sensor subassembly, return the arm motor return arm photoelectric sensor subassembly with MCU control mainboard electric connection, return the arm motor with it connects to return arm gear engagement, return the arm gear with return hook joint, the return hook with gramophone subassembly joint, MCU control mainboard can control it drives to return arm motor return the arm gear drive the return arm gear advances and stirs the initial quiescent position is got back to the gramophone subassembly.
6. The record player capable of automatically adjusting a rotational speed of the disc player as claimed in claim 5, wherein: the return arm gear is equipped with fixed connection's helix, the return arm gear passes through the helix with return hook joint, return arm gear bottom is equipped with fixed connection's stroke terminal shielding piece, return arm photoelectric sensor subassembly includes return arm and transmits photoelectric sensor and return arm and receive photoelectric sensor, stroke terminal shielding piece can move extremely return arm and transmit photoelectric sensor with return between the photoelectric sensor.
7. A record player capable of automatically adjusting the rotational speed according to any one of claims 1 to 6, wherein: the drive device comprises a drive motor and a synchronous conveyor belt, the drive motor is fixedly connected with the gramophone support, and the drive motor is movably connected with the rotary tray through the synchronous conveyor belt.
8. The record player capable of automatically adjusting a rotational speed of the disc player as claimed in claim 7, wherein: the side wall of the rotary tray is provided with an annular groove, and the synchronous conveyor belt and the rotary tray are movably connected in the annular groove.
9. The record player of claim 8, wherein the record player is capable of automatically adjusting a rotational speed of the record player by: the record head subassembly includes record pole seat, record pole and record head, record pole seat with record player support fixed connection, record pole seat with record pole swing joint, record pole with record head swing joint, the record head can with the joint set up in the microgroove record of record axle pastes and connects, record pole seat with MCU control mainboard electric connection.
10. The record player of claim 9, wherein the record player is capable of automatically adjusting a rotational speed of the record player by: the gramophone support is further provided with a shockproof adhesive layer, and the shockproof adhesive layer is arranged between the gramophone support and the rotary tray.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210946656.7A CN115171740A (en) | 2022-08-09 | 2022-08-09 | Record player capable of automatically adjusting rotating speed |
| PCT/CN2023/108095 WO2024032333A1 (en) | 2022-08-09 | 2023-07-19 | Phonograph capable of automatically adjusting rotational speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210946656.7A CN115171740A (en) | 2022-08-09 | 2022-08-09 | Record player capable of automatically adjusting rotating speed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115171740A true CN115171740A (en) | 2022-10-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210946656.7A Pending CN115171740A (en) | 2022-08-09 | 2022-08-09 | Record player capable of automatically adjusting rotating speed |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115171740A (en) |
| WO (1) | WO2024032333A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024032333A1 (en) * | 2022-08-09 | 2024-02-15 | 深圳市君兰电子有限公司 | Phonograph capable of automatically adjusting rotational speed |
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| DE2306901A1 (en) * | 1972-02-14 | 1973-08-30 | Bang & Olufsen As | AUTOMATIC DISC PLAYER |
| CA2753365C (en) * | 2008-12-03 | 2018-08-28 | Gvbb Holdings S.A.R.L. | Playback speed control apparatus and playback speed control method |
| CN101826329B (en) * | 2010-01-29 | 2012-05-23 | 陈承训 | Drive device for record player and control method thereof |
| CN107705809A (en) * | 2017-10-30 | 2018-02-16 | 深圳市佳音王科技股份有限公司 | A kind of control device for being used to automatically control phonograph rotating speed |
| CN109285564B (en) * | 2018-11-02 | 2023-10-27 | 深圳市佳音王科技股份有限公司 | Record player with automatic arm return function |
| TWM590301U (en) * | 2019-08-02 | 2020-02-01 | 吳奕霖 | Revolution-beat ratio control system for turntable |
| CN218214646U (en) * | 2022-08-09 | 2023-01-03 | 深圳市君兰电子有限公司 | Record player capable of automatically adjusting rotating speed |
| CN217933165U (en) * | 2022-08-09 | 2022-11-29 | 深圳市君兰电子有限公司 | Record player with bluetooth pairs function |
| CN115171740A (en) * | 2022-08-09 | 2022-10-11 | 深圳市君兰电子有限公司 | Record player capable of automatically adjusting rotating speed |
-
2022
- 2022-08-09 CN CN202210946656.7A patent/CN115171740A/en active Pending
-
2023
- 2023-07-19 WO PCT/CN2023/108095 patent/WO2024032333A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024032333A1 (en) * | 2022-08-09 | 2024-02-15 | 深圳市君兰电子有限公司 | Phonograph capable of automatically adjusting rotational speed |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024032333A1 (en) | 2024-02-15 |
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