Recording player capable of automatically controlling lifting arm and rotating arm to move and control method

Abstract

The invention discloses a disc player capable of automatically controlling a lifting arm and a rotating arm to move and a control method, and belongs to the technical field of vinyl disc players. The disc player comprises a singing arm, a singing arm lifting part used for controlling lifting of the singing arm, a singing arm rotating part used for controlling rotation of the singing arm, and an induction control part used for cooperative control according to the position of the singing arm. Wherein the tone arm lifting part realizes stable lifting of a tone arm through a first rotating power part, a screw rod and a sliding block with a z-shaped sliding groove; the singing arm rotating part drives the singing arm to accurately rotate through a second rotating power part and a turbine worm mechanism; the sensing control part accurately detects the position of the tone arm through a sensing arm synchronously rotating with the tone arm and U-shaped sensing blocks arranged at standby, starting and ending positions. The whole process of singing arm moving, needle falling, playing, arm lifting and returning can be automatically completed, operation is easy and convenient, equipment damage caused by improper manual operation can be effectively avoided, and use convenience and equipment reliability are improved.

Description

Technical Field

[0001] This invention relates to the field of record player technology, and in particular to a record player and control method that automatically controls the lifting and rotating arm movements. Background Technology

[0002] As a classic music playback device, the record player reproduces sound by reading grooves on a vinyl record using a stylus. Its unique analog sound quality has won the favor of many music lovers. Traditional record players usually require the user to manually operate the tonearm at the beginning and end of playback, moving it from the armrest to the starting position of the record, and then lifting it back onto the armrest after playback.

[0003] This manual operation method has several drawbacks: First, the user needs to precisely place the stylus on the starting groove of the record; improper operation can easily damage the stylus or the record. Furthermore, during the movement of the tonearm, errors can cause the stylus to scratch the record surface or damage the fragile stylus suspension system due to excessive force. Additionally, if the user fails to lift the tonearm promptly after playback, the stylus will continue to rub against the groove at the end of the record, generating noise and accelerating stylus wear.

[0004] While some automatic or semi-automatic record players already exist on the market, their mechanical structures are often complex, costly, and their reliability needs improvement. Therefore, it is necessary to develop a record player with a simpler structure, more precise control, and a higher degree of automation to enhance user convenience and equipment durability. Summary of the Invention

[0005] The purpose of this invention is to solve the problems of inconvenient manual operation, easy damage to equipment, and complex automated structure of existing record players, and to provide a record player with a reliable structure and precise control of the automatic control of the lifting and rotating arm movements, as well as its control method.

[0006] To achieve the above objectives, the present invention provides a record player that automatically controls the lifting and rotating motion of the arm, the record player comprising: Base; A record tray, which is rotatably mounted on the base, and a record rotation mechanism for driving the record tray to rotate is provided at the bottom of the record tray; Mounting plate, the mounting plate being fixed to the base; An adjusting shaft is rotatably mounted on the mounting plate and can slide up and down. A tonearm, which is mounted on the adjustment shaft, and a stylus is provided at one end of the tonearm; A tonearm lifting unit is disposed on the mounting plate and is used to control the lifting of the tonearm. A tonearm rotating part is disposed on the mounting plate and is used to control the rotation of the tonearm. The sensing control unit is located at the bottom of the mounting plate. The sensing control unit controls the tonearm lifting unit and the tonearm rotating unit according to the tonearm position, and controls the tonearm to perform automatic lifting and rotating actions.

[0007] In one embodiment, a cover is hinged to the base for concealing the record tray and tonearm.

[0008] In one embodiment, the tonearm lifting unit includes: A first rotational power unit is disposed on the mounting plate; A lead screw, which is connected to the power output shaft of the first rotating power unit; A slider is slidably mounted on the mounting plate. The slider is threadedly engaged with the lead screw. The slider is provided with a Z-shaped groove, which includes a bottom surface, a top surface, and an inclined surface connecting the top surface and the bottom surface. The lifting block has its bottom slidably fitted onto the mounting plate, and the lifting rod is slidably fitted into the Z-shaped groove. The top of the lifting block is in close contact with the bottom of the tonearm.

[0009] In one embodiment, an arc-shaped plate is provided on the top of the lifting block, and the arc-shaped plate is coaxially arranged with the adjusting shaft.

[0010] In one embodiment, the tonearm rotating part includes: The housing is slidably fitted onto the mounting plate, and a central hole is provided on the housing, through which the adjusting shaft passes. The second rotational power unit is disposed inside the outer casing; The worm gear mechanism has a worm gear rotatably disposed within the housing, the worm gear being connected to the adjusting shaft, and the worm shaft being connected to the power output shaft of the second rotating power unit.

[0011] In one embodiment, the sensing control unit includes: A rotating sensor arm is located at the bottom of the mounting plate and is fixed to the bottom of the adjusting shaft. A protruding sensor head is provided on the rotating sensor arm, and the sensor head is electrically connected to the tonearm lifting part and the tonearm rotating part. Multiple U-shaped sensing blocks are arranged around the adjustment shaft, and the U-shaped sensing blocks correspond to the tonearm being in the standby position, start position, and end position, respectively.

[0012] In one embodiment, the sensing head is an infrared sensing probe.

[0013] Another aspect of the present invention provides a control method for automatically controlling the lifting and rotating arm, used to control the record player with automatically controlled lifting and rotating arm as described in any of the above embodiments. The control method for automatically controlling the lifting and rotating arm includes the following steps: a. After installing the record into the record tray, turn on the record player. b. The sensor head on the rotating sensor arm in the sensing control unit senses the U-shaped sensor block in the standby position, and then determines that the tonearm is in the standby position at this time. c. The sensing control unit controls the operation of the tonearm rotating part. The second rotation power unit inside the tonearm rotating part is energized and rotates rapidly in the forward direction, thereby driving the adjustment shaft and the tonearm and rotating sensing arm on the adjustment shaft to rotate through the worm gear mechanism. d. When the rotating sensor arm rotates to the point where the sensor head on it senses the U-shaped sensor block at the starting position, the sensing control unit controls the tonearm rotation unit to stop operating and controls the tonearm lifting unit to work. e. The first rotating power unit inside the tonearm lifting section rotates in the forward direction, causing the lead screw to rotate and drive the slider to slide away from the first rotating power unit. At this time, the lifting block slides down from the top surface of the Z-shaped groove along the inclined surface to the bottom surface of the Z-shaped groove, thereby causing the lifting block to descend. This causes the tonearm and the adjustment shaft to descend under their own gravity until the tonearm is supported on the lifting block again. At this time, the stylus at the end of the tonearm is just touching the starting position of the record. f. Then the tonearm lifting part stops operating, the tonearm rotating part starts operating again, and the second rotation power unit inside the tonearm rotating part is powered on and slowly rotates forward, so that the tonearm moves slowly towards the center position of the record as the record is played, so that the stylus can read all the contents on the record. g. When the rotating sensor arm rotates with the tonearm until the sensor head senses the U-shaped sensor block at the end position, the tonearm has completely read the entire record content, and the record playback is complete. The sensor control unit controls the tonearm rotation unit to stop operating and controls the tonearm lifting unit to work in reverse, causing the tonearm to rise. Then, the tonearm rotation unit is controlled to operate again, and the second rotation power unit inside the tonearm rotation unit is energized and quickly reverses until the sensor head of the rotating sensor arm moves to sense the U-shaped sensor block at the standby position. At this time, the tonearm rotation unit is controlled to stop operating, and the tonearm stops at the standby position.

[0014] The above-described technical solutions in the embodiments of the present invention have at least the following technical effects or advantages: The record player and control method for automatically controlling the lifting and rotating of the tonearm provided in this invention allow users to simply place the record and turn on the machine; subsequent tonearm movement, stylus insertion, playback, lifting, and return to center are all completed automatically, greatly simplifying operation and offering advantages of high automation and ease of use. Furthermore, through a sensing unit and a precise lifting and rotating mechanism, accurate stylus positioning and smooth lifting are achieved, effectively avoiding damage to the stylus and record that could be caused by manual operation. Moreover, by employing mature mechanical structures such as lead screws, sliders, and worm gears, combined with electronic components such as infrared sensors, complex functions are achieved while ensuring a relatively simple and reliable structure, making it easy to manufacture and maintain. Finally, the entire playback process is smooth and quiet, automatically returning to center at the end, avoiding unnecessary noise and equipment wear, and providing users with a purer and more convenient music experience. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a record player with automatically controlled lifting and rotating arms when closed, as provided in an embodiment of the present invention. Figure 2 This is a schematic diagram of the structure of a record player with automatically controlled lifting and rotating arms when opened, according to an embodiment of the present invention. Figure 3 This is a structural schematic diagram of the automatic control lifting and rotating arm section provided in an embodiment of the present invention; Figure 4 for Figure 3 Cross-sectional view of the automatic control boom lifting and swing arm section; Figure 5 for Figure 4 A schematic diagram of the structure of the tonearm after it rotates clockwise and descends; Figure 6 This is a schematic diagram of the tonearm lifting section provided in an embodiment of the present invention; Figure 7 for Figure 6 A schematic diagram of the middle tonearm lifting section after it has been lowered; Figure 8 This is a schematic diagram of the structure of the tonearm rotating part provided in an embodiment of the present invention; Figure 9 for Figure 8 A schematic diagram of the internal structure of the tonearm rotating part after removing part of the outer shell; Figure 10This is a schematic diagram of the sensing control unit provided in an embodiment of the present invention.

[0017] The labels for the various figures are as follows: 1. Base; 2. Record tray; 3. Mounting plate; 4. Adjustment shaft; 5. Tonearm; 6. Tonearm lifting mechanism; 7. Tonearm rotating mechanism; 8. Sensor control mechanism; 9. Case cover; 51. Stylus; 61. First rotation power unit; 62. Lead screw; 63. Slider; 64. Lifting block; 71. Housing; 72. Second rotation power unit; 73. Worm gear mechanism; 81. Rotating sensor arm; 82. U-shaped sensor block; 631. Z-shaped groove; 641. Arc plate; 711. Center hole; 811. Sensor head. Detailed Implementation

[0018] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0019] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0022] Please see Figures 1 to 5 This application provides a record player with automatic control of lifting and rotating the tonearm. The record player includes a base 1, a record tray 2, a mounting plate 3, an adjustment shaft 4, a tonearm 5, a tonearm lifting part 6, a tonearm rotating part 7, and a sensing control part 8.

[0023] Specifically, the record tray 2 is rotatably mounted on the base 1, and its bottom is equipped with a record rotation mechanism for driving the record tray 2 to rotate. The mounting plate 3 is fixed to the base 1. The adjustment shaft 4 is a key component for realizing the complex movements of the tonearm 5; it can not only rotate but also slide up and down on the mounting plate 3. The tonearm 5 is mounted on the adjustment shaft 4, so the rotation and lifting of the adjustment shaft 4 directly drive the tonearm 5 to perform corresponding movements. One end of the tonearm 5 is equipped with a stylus 51 for reading record information.

[0024] The tonearm lifting unit 6 and the tonearm rotating unit 7 are both mounted on the mounting plate 3. They are responsible for precisely controlling the vertical lifting and horizontal rotation of the tonearm 5, respectively. The sensing control unit 8 is located at the bottom of the mounting plate 3. It can send commands to the tonearm lifting unit 6 and the tonearm rotating unit 7 according to the real-time position of the tonearm 5, thereby coordinating the control of the tonearm 5 to complete a series of actions such as automatic tonearm lifting and rotation.

[0025] The record player provided in this embodiment modularizes the rotation, lifting, and sensor control functions of the record player, forming a complete automated control system. The user only needs to place the record and turn on the power; all subsequent operations, such as tonearm 5 movement, needle drop, playback, tonearm lifting, and return to position, can be completed automatically. This greatly simplifies user operation, achieves a high degree of automation, and provides a convenient user experience.

[0026] In one embodiment, a cover 9 is hinged to the base 1. (See attached image) Figure 1 and Figure 2 As shown, this lid 9 can completely cover and hide the record tray 2 and tonearm 5 when closed.

[0027] By adding the cover 9, the delicate internal components, such as the record tray 2, tonearm 5, and stylus 51, can be effectively protected when the record player is not in use, preventing damage caused by dust accumulation or accidental collisions, thereby extending the lifespan of the record player and maintaining good playback quality.

[0028] Please see the appendix Figure 6 and Figure 7The tonearm lifting unit 6 includes a first rotational power unit 61, a lead screw 62, a slider 63, and a lifting block 64. The first rotational power unit 61 (such as a motor) is fixed to the mounting plate 3. Its power output shaft is connected to the lead screw 62. The slider 63 is slidably mounted on the mounting plate 3 and is threadedly engaged with the lead screw 62, so the rotation of the lead screw 62 drives the slider 63 to slide linearly. The slider 63 is provided with a special Z-shaped groove 631, which consists of a bottom surface, a top surface, and an inclined surface connecting the top and bottom surfaces. The bottom of the lifting block 64 can slide up and down on the mounting plate 3, while a part of its structure (such as a lifting rod) slides in engagement with the Z-shaped groove 631. The top of the lifting block 64 is in close contact with and supports the bottom of the tonearm 5. When the first rotational power unit 61 drives the lead screw 62 to rotate, the slider 63 will move linearly, and the lifting rod of the lifting block 64 will rise or fall along the inclined surface of the Z-shaped slide groove 631, thereby realizing the vertical lifting and lowering of the lifting block 64, and thus controlling the raising and lowering of the tonearm 5.

[0029] The lifting mechanism employs a mechanical transmission method that converts rotational motion into linear motion and linear motion into lifting motion, resulting in a sophisticated and reliable structure. Through the cooperation of the lead screw 62 and the Z-shaped slide 631, the rotational motion of the motor can be converted into a smooth and precise vertical lifting action, achieving a gentle lifting of the tonearm 5 and effectively avoiding impact damage to the stylus 51 or record that may be caused by improper operation during manual needle drop.

[0030] Preferably, the top of the lifting block 64 is provided with an arc-shaped plate 641, and the arc-shaped plate 641 is coaxially arranged with the adjusting shaft 4. (See attached diagram) Figure 6 As shown, this curved plate 641 is in direct contact with the bottom of the tonearm 5.

[0031] By setting the arc-shaped plate 641, the contact area between the lifting block 64 and the tonearm 5 can be increased, and the contact point can be kept stably centered. Since it is coaxial with the adjustment shaft 4, the arc-shaped plate 641 can provide stable and uniform support force no matter what angle the tonearm 5 is rotated to, ensuring the stability of the tonearm 5 during the lifting process and further improving the accuracy and safety of the needle drop.

[0032] Please see the appendix Figure 8 and Figure 9The tonearm rotating part 7 includes a housing 71, a second rotational power unit 72, and a worm gear mechanism 73. The housing 71 can slide up and down on the mounting plate 3, and has a central hole 711 for the adjustment shaft 4 to pass through. The second rotational power unit 72 is located inside the housing 71. The worm gear mechanism 73 is the core of the rotation, in which the turbine is rotatably mounted inside the housing 71 and fixedly connected to the adjustment shaft 4; while the worm is connected to the power output shaft of the second rotational power unit 72. When the second rotational power unit 72 is working, power is transmitted to the turbine through the worm, thereby driving the turbine and the connected adjustment shaft 4 and tonearm 5 to rotate.

[0033] In this embodiment, a worm gear mechanism 73 is used for transmission, which has the advantages of a large transmission ratio and smooth operation. This allows the tonearm 5 to achieve both rapid rotation (such as before playback begins and when returning to the standby position after playback) and very slow, smooth rotation (such as moving towards the center following the grain of the record during playback), thus ensuring precise control. Furthermore, the worm gear mechanism 73 typically has a self-locking characteristic, which can maintain the stable position of the tonearm 5 when power is off, improving the reliability of the system.

[0034] Please see the appendix Figure 10 The sensing control unit 8 includes a rotating sensing arm 81 and multiple U-shaped sensing blocks 82. The rotating sensing arm 81 is located at the bottom of the mounting plate 3 and fixed to the bottom of the adjusting shaft 4, so it rotates synchronously with the tonearm 5. A protruding sensing head 811 is provided on the sensing arm, which is electrically connected to the lifting and rotating parts of the tonearm 5. The multiple U-shaped sensing blocks 82 are fixedly arranged around the adjusting shaft 4, and their positions precisely correspond to the three key states of the tonearm 5: standby position, playback start position, and playback end position. When the rotating sensing arm 81 rotates with the tonearm 5, its sensing head 811 passes through these U-shaped sensing blocks 82 in sequence, thereby detecting the current position of the tonearm 5.

[0035] The sensing control unit 8 in this embodiment has a simple structure and precise positioning. By setting three sensing points corresponding to the standby, start, and end positions respectively, the system can accurately determine the stage of the tonearm 5 and trigger the corresponding control logic (such as starting to lower the tonearm, starting to rotate slowly, raising the tonearm to return to its original position, etc.). This is the foundation and key to realizing the fully automatic playback process, ensuring the accuracy and reliability of the entire control process.

[0036] Specifically, the sensing head 811 can be an infrared sensing probe. Correspondingly, the U-shaped sensing block 82 is a photoelectric interruptor. When the rotating sensing arm 81 with the infrared sensing probe rotates to the opening of the U-shaped sensing block 82, the infrared signal path is established or cut off, thereby generating a precise trigger signal.

[0037] Position detection is achieved using an infrared sensor, a non-contact sensing method. Compared to mechanical switches, it experiences no physical wear, has a longer lifespan, and higher reliability. Furthermore, infrared sensing offers a fast response time, is unaffected by electromagnetic interference, and provides the control system with stable and accurate position signals, further ensuring the reliability of the record player's automated operation.

[0038] The present invention also provides a control method for automatically controlling the lifting and rotating of the boom, the method comprising the following steps: First, after the user places the record on the record tray 2, they turn on the record player. At this time, the sensor head 811 on the rotating sensor arm 81 in the sensing control unit 8 will sense the U-shaped sensor block 82 in the standby position, and the system will determine that the tonearm 5 is in the standby position based on this.

[0039] Next, the sensing control unit 8 controls the tonearm rotation unit 7 to start operating. The second rotation power unit 72 is energized and rotates rapidly in the forward direction, driving the adjustment shaft 4 through the worm gear mechanism 73, which in turn drives the tonearm 5 on it to rotate together with the rotating sensing arm 81.

[0040] When the rotating sensor arm 81 rotates to the point where the sensor head 811 on it senses the U-shaped sensor block 82 at the starting position, the sensing control unit 8 immediately controls the tonearm rotation unit 7 to stop and starts the tonearm lifting unit 6 to begin working.

[0041] Subsequently, the first rotational power unit 61 within the tonearm lifting section 6 rotates forward, driving the lead screw 62 to rotate, causing the slider 63 to slide away from the first rotational power unit 61. During this process, the lifting block 64 slides downward from the top surface of the Z-shaped groove 631 along the inclined plane to the bottom surface, causing the lifting block 64 to descend. The tonearm 5 and the adjusting shaft 4 then descend smoothly under their own gravity until the stylus 51 of the tonearm 5 is precisely positioned at the beginning of the record.

[0042] After the stylus is lowered, the tonearm lifting unit 6 stops operating, while the tonearm rotating unit 7 restarts. This time, the second rotation power unit 72 is energized and slowly rotates clockwise, allowing the tonearm 5 to move slowly toward the center of the record as it plays, ensuring that the stylus 51 can read all the contents of the record.

[0043] When the rotating sensor arm 81 rotates with the tonearm 5 until the sensor head 811 senses the U-shaped sensor block 82 at the end position, it indicates that the record has finished playing. The sensor control unit 8 first controls the tonearm rotation unit 7 to stop and controls the tonearm lifting unit 6 to work in reverse, so that the tonearm 5 is smoothly lifted. Then, the system controls the tonearm rotation unit 7 to start running again. At this time, the second rotation power unit 72 is energized and quickly reverses, driving the tonearm 5 to return quickly until the sensor head 811 of the rotating sensor arm 81 senses the U-shaped sensor block 82 at the standby position again. Only then does the system control the tonearm rotation unit 7 to stop. At this time, the tonearm 5 has safely stopped at the standby position, completing a complete automatic playback cycle.

[0044] The control method in this embodiment programs and automates the entire playback process, with clear logic and rigorous steps. Through the precise control of different speeds (fast movement and slow playback) and the precise coordination of lifting and rotating movements, it perfectly simulates and optimizes all the steps of manually playing a record. This not only greatly improves ease of use, but more importantly, through precise program control, it achieves optimal protection for the stylus 51 and the record, avoiding human error and providing users with a smooth, quiet, and convenient music experience.

[0045] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A record player with automatically controlled arm lifting and rotating movements, characterized in that, The record player with automatic arm lifting and rotating control includes: Base; A record tray, which is rotatably mounted on the base, and a record rotation mechanism for driving the record tray to rotate is provided at the bottom of the record tray; Mounting plate, the mounting plate being fixed to the base; An adjusting shaft is rotatably mounted on the mounting plate and can slide up and down. A tonearm, which is mounted on the adjustment shaft, and a stylus is provided at one end of the tonearm; A tonearm lifting unit is disposed on the mounting plate and is used to control the lifting of the tonearm. A tonearm rotating part is disposed on the mounting plate and is used to control the rotation of the tonearm. The sensing control unit is located at the bottom of the mounting plate. The sensing control unit controls the tonearm lifting unit and the tonearm rotating unit according to the tonearm position, and controls the tonearm to perform automatic lifting and rotating actions.

2. A record player with automatic control of arm lifting and rotating motion according to claim 1, characterized in that: A cover is hinged to the base, which is used to hide the record tray and tonearm.

3. A record player with automatic control of arm lifting and rotating motion according to claim 1, characterized in that, The tonearm lifting unit includes: A first rotational power unit is disposed on the mounting plate; A lead screw, which is connected to the power output shaft of the first rotating power unit; A slider is slidably mounted on the mounting plate. The slider is threadedly engaged with the lead screw. The slider is provided with a Z-shaped groove, which includes a bottom surface, a top surface, and an inclined surface connecting the top surface and the bottom surface. The lifting block has its bottom slidably fitted onto the mounting plate, and the lifting rod is slidably fitted into the Z-shaped groove. The top of the lifting block is in close contact with the bottom of the tonearm.

4. A record player with automatic control of arm lifting and rotating motion according to claim 3, characterized in that: The top of the lifting block is provided with an arc-shaped plate, which is coaxially arranged with the adjusting shaft.

5. A record player with automatic control of arm lifting and rotating motion according to claim 1, characterized in that, The tonearm rotating part includes: The housing is slidably fitted onto the mounting plate, and a central hole is provided on the housing, through which the adjusting shaft passes. The second rotational power unit is disposed inside the outer casing; The worm gear mechanism has a worm gear rotatably disposed within the housing, the worm gear being connected to the adjusting shaft, and the worm shaft being connected to the power output shaft of the second rotating power unit.

6. A record player with automatically controlled lifting and rotating arm movement according to claim 1, characterized in that, The sensing control unit includes: A rotating sensor arm is located at the bottom of the mounting plate and is fixed to the bottom of the adjusting shaft. A protruding sensor head is provided on the rotating sensor arm, and the sensor head is electrically connected to the tonearm lifting part and the tonearm rotating part. Multiple U-shaped sensing blocks are arranged around the adjustment shaft, and the U-shaped sensing blocks correspond to the tonearm being in the standby position, start position, and end position, respectively.

7. A record player with automatic control of arm lifting and rotating motion according to claim 6, characterized in that: The sensing head is an infrared sensing probe.

8. A control method for automatically controlling the lifting and rotating arm movements, used to control the record player with automatically controlled lifting and rotating arm movements as described in any one of claims 1-7, characterized in that, The automatic control method for raising and rotating the boom includes the following steps: a. After installing the record into the record tray, turn on the record player. b. The sensor head on the rotating sensor arm in the sensing control unit senses the U-shaped sensor block in the standby position, and then determines that the tonearm is in the standby position at this time. c. The sensing control unit controls the operation of the tonearm rotating part. The second rotation power unit inside the tonearm rotating part is energized and rotates rapidly in the forward direction, thereby driving the adjustment shaft and the tonearm and rotating sensing arm on the adjustment shaft to rotate through the worm gear mechanism. d. When the rotating sensor arm rotates to the point where the sensor head on it senses the U-shaped sensor block at the starting position, the sensing control unit controls the tonearm rotation unit to stop operating and controls the tonearm lifting unit to work. e. The first rotating power unit inside the tonearm lifting section rotates in the forward direction, causing the lead screw to rotate and drive the slider to slide away from the first rotating power unit. At this time, the lifting block slides down from the top surface of the Z-shaped groove along the inclined surface to the bottom surface of the Z-shaped groove, thereby causing the lifting block to descend. This causes the tonearm and the adjustment shaft to descend under their own gravity until the tonearm is supported on the lifting block again. At this time, the stylus at the end of the tonearm is just touching the starting position of the record. f. Then the tonearm lifting part stops operating, the tonearm rotating part starts operating again, and the second rotation power unit inside the tonearm rotating part is powered on and slowly rotates forward, so that the tonearm moves slowly towards the center position of the record as the record is played, so that the stylus can read all the contents on the record. g. When the rotating sensor arm rotates with the tonearm until the sensor head senses the U-shaped sensor block at the end position, the tonearm has completely read the entire record content, and the record playback is complete. The sensor control unit controls the tonearm rotation unit to stop operating and controls the tonearm lifting unit to work in reverse, causing the tonearm to rise. Then, the tonearm rotation unit is controlled to operate again, and the second rotation power unit inside the tonearm rotation unit is energized and quickly reverses until the sensor head of the rotating sensor arm moves to sense the U-shaped sensor block at the standby position. At this time, the tonearm rotation unit is controlled to stop operating, and the tonearm stops at the standby position.

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