Automatic tonearm lift device

Abstract

Automatic tonearm lifting device for use with a tonearm (92) of a turntable (9), comprising: a base seat (1) that can be mounted on the turntable (9); a drive mechanism (2) comprising a stepper motor (21) mounted on the base seat (1) and an eccentric cam assembly (22) coupled to the stepper motor (21) to be rotated by the stepper motor (21) about an axis (M) in a predetermined angular range; and an arm lifting mechanism (3) which is movably attached to the eccentric cam arrangement (22), wherein during the rotation of the eccentric cam arrangement (22) the arm lifting mechanism (3) is moved in an up-down direction relative to the base seat (1) between a raised position and a lowered position, wherein the raised position is higher than the lowered position, wherein the arm lifting mechanism (3) supports and carries the tonearm (92) when the arm lifting mechanism (3) is in the raised position.

Description

[0001] The disclosure relates to an arm lifting device and, in particular, to an automatic tonearm lifting device of a record player.

[0002] When using a record player to play a record (hereinafter referred to as "the record"), the front free end of a tonearm is positioned on the record. As the record rotates, a stylus traces the grooves of the record and converts the physical patterns of the record into electrical signals that produce sound. These sounds are amplified and played back through the loudspeaker, thus creating music based on the converted electrical signals.

[0003] To stop music playback, the tonearm must be lifted from the record so that the stylus no longer touches it. Since the stylus is very delicate and fragile, it is important to raise and lower the tonearm smoothly and to avoid any idling of the drive motor or mechanical structure that drives the tonearm, which can shorten its lifespan.

[0004] Therefore, one objective of the disclosure is to provide an automatic tonearm lifting device that can overcome at least one of the disadvantages of the prior art.

[0005] According to the disclosure, the automatic tonearm lifting device for use with a turntable tonearm comprises a base, a drive mechanism, and an arm lifting mechanism. The base is designed to be mounted on the turntable. The drive mechanism comprises a stepper motor mounted on the base and an eccentric cam assembly coupled to the stepper motor for rotation about an axis within a predetermined angular range. The arm lifting mechanism rests movably against the eccentric cam assembly. During rotation of the eccentric cam assembly, the arm lifting mechanism is moved in an up-down direction relative to the base between a raised position and a lowered position, the raised position being higher than the lowered position.The arm lifting mechanism supports and carries the tonearm when the arm lifting mechanism is in the raised position.

[0006] Since the stepper motor can be rotated within the specified angular range and the eccentric cam arrangement rotates synchronously with the stepper motor, the tonearm can be raised evenly and idling of the stepper motor can be prevented.

[0007] Further features and advantages of the disclosure will become clear in the following detailed description of the embodiment with reference to the accompanying drawings. It should be noted that various features may not be drawn to scale. Fig. Figure 1 is a perspective view showing a record player and an embodiment of an automatic tonearm lifting device according to the disclosure. Fig. Figure 2 is a fragmentary perspective view showing the embodiment mounted on a tonearm linkage mechanism of the record player. Fig. 3 is a fragmentary perspective view from a different angle. Fig. Figure 4 is a perspective exploded view of the embodiment. Fig. Figure 5 is a sectional view illustrating the embodiment when an arm lifting mechanism is in a lowered position, an eccentric cam arrangement is in a lowering state, and a sensor module is in a first state. Fig. 6 is a sectional view similar to Fig. 5, which shows that the arm lifting mechanism is in a raised position, the eccentric cam assembly is in a lifting state, and the sensing module is in a second state. Fig. Figure 7 is a sectional view from a different angle, showing that the arm lifting mechanism is in the lowered position when the eccentric cam assembly is in the lowered state. Fig. 8 is a sectional view similar to Fig. Figure 7 shows that the arm lifting mechanism is moved into the raised position by a manual control mechanism.

[0008] It should be noted that, for the sake of clarity, spatially relative terms such as "above," "below," "upper," "lower," "up," "on," "above," "over," "downward," "upward," and the like may be used throughout the revelation, referring to the features depicted in the drawings. The features may be oriented differently (e.g., rotated by 90 degrees or in other orientations), and the spatially relative terms used here may be interpreted accordingly.

[0009] In the Fig. 1, Fig. 2 to Fig. Figure 3 is an embodiment of an automatic tonearm lifting device 10 according to the disclosure, which can be mounted on and used with a record player 9. The record player 9 generally comprises a playback housing 91, a tonearm connection mechanism 920 arranged on the playback housing 91, a tonearm 92 rotatably connected to the tonearm connection mechanism 920 and having a record needle 93 at its front free end, a turntable 94 rotatably arranged on the playback housing 91 to support and rotate a record (not shown, hereinafter referred to as "the record"), and a main control module 95 arranged on the playback housing 91. The main control module 95 communicates with the tonearm 92 and the turntable 94 and controls the rotation of the turntable 94 and the audio signal processing.

[0010] The automatic tonearm lifting device 10 comprises a base seat 1 arranged in the playback housing 91, a drive mechanism 2 arranged on the base seat 1, an arm lifting mechanism 3 arranged on the base seat 1, a manual control mechanism 4 connected to the arm lifting mechanism 3, a detection module 5 in signal communication with the main control module 95, an input module 6 arranged on the playback housing 91, and a control module 7 arranged on the playback housing 91. The control module 7 is in signal communication with the drive mechanism 2, the arm lifting mechanism 3, and the input module 6.

[0011] The base seat 1 comprises a first plate 11, which is arranged on the top of the player housing 91, and a second plate 12, which extends downwards from the first plate 11.

[0012] With reference to Fig. 2, Fig. 4 and Fig. The drive mechanism 2 comprises a stepper motor 21 mounted on the base seat 1 and an eccentric cam assembly 22 coupled to the stepper motor 21. The stepper motor 21 comprises a motor body 211 and an output shaft 212 extending rearward from the motor body 211 along an axis (M). The stepper motor 21 is in signal communication with the control module 7 (as shown in Fig. 1 shown) and is controlled such that it rotates the output shaft 212 either in a first direction of rotation (T1) (as shown in Fig. 5 shown) or in a second direction of rotation (T2) (as shown in Fig. 5 shown) rotates, which is opposite to the first direction of rotation (T1).

[0013] With reference to Fig. 4 to Fig. 6 The eccentric cam assembly 22 is driven by the stepper motor 21 to rotate about the axis (M) within a predetermined angular range (A). The eccentric cam assembly 22 comprises a rotating wheel 221, which is coupled to and rotated by the stepper motor 21, and a vibrating element 222, which is connected to the rotating wheel 221.

[0014] The rotating wheel 221 has a wheel body 223, which is coaxially coupled to the output shaft 212 of the stepper motor 21, and an eccentric projection 224, which projects radially from the wheel body 223 in the direction of the sensing module 5. The eccentric projection 224 is radially spaced from the axis (M). The oscillating element 222 extends in a left-right direction and comprises a connecting section 225 and a stop section 226, which are diametrically opposed to each other. In this embodiment, the eccentric projection 224 and the stop section 226 are located on the left and right sides of a vertical plane (B) (as shown in Figure 1). Fig. 5 shown), to which the axis (M) is perpendicular.

[0015] With reference to Fig. 5 and Fig. 6. The rotating wheel 221 and the oscillating element 222 are connected to each other in the direction of the axis (M) and are rotated synchronously by the output shaft 212 of the stepper motor 21. The stepper motor 21 is controlled to drive the eccentric cam assembly 22 so that it rotates within the specified angular range (A). During the rotation of the eccentric cam assembly 22 by the stepper motor 21, the stop section 226 is moved between a lifting state at a first height (H1) (see Fig. 6) and a lowering state at a second height (H2) (see Fig. 5) swiveled. The first height (H1) is greater than the second height (H2).

[0016] For example, the rotation angle of the eccentric cam assembly 22 by the stepper motor 21 is 45 degrees without additional gear and / or belt connection mechanisms. In this embodiment, the eccentric cam assembly 22 is slowly rotated by 45 degrees each time, so that the eccentric projection 224 and the adjacent part 226 are rotated by 45 degrees about the axis (M).

[0017] In some embodiments, the angular range of the stepper motor 21 is preset. In some embodiments, the stop 226 is pivoted about the axis (M) by a predetermined angle (A) in the range of 0 to 180 degrees each time. In some embodiments, the stepper motor 21 drives the rotation of the eccentric cam assembly 22 by an angle between 30 degrees and 60 degrees. The abutting part 226 is pivoted about the axis (M) by a predetermined angle (A) in the range of 30 degrees to 60 degrees.

[0018] In relation to Fig. 4 and Fig. Figure 5, which shows a longitudinal sectional view from a front-to-back direction, shows the arm lifting mechanism 3 movably resting against the eccentric cam assembly 22 and mounted on the tonearm connection mechanism 920, movable relative to it in an up-and-down direction. The arm lifting mechanism 3 comprises a stop element 31, which is supported by and rests against the oscillating element 222, an upright lifting shaft 32, which is arranged at an upper end of the stop element 31, a first preload arrangement 33, which is guided around the upright lifting shaft 32, a second preload arrangement 34, which is arranged at an upper end of the upright lifting shaft 32, and an arm support platform 35, which is arranged on the second preload arrangement for supporting and carrying the tonearm 92.

[0019] With reference to Fig. 4 and Fig. Figure 7, which shows a longitudinal section in the left-right direction, shows that the manual control mechanism 4 comprises a driven element 41, which is securely mounted on the upright lifting shaft 32, and an actuating element 42, which is pivotable relative to the base seat 1 and bears against the driven element 41. In particular, the first preload arrangement 33 of the arm lifting mechanism 3 comprises a first sleeve element 331, which sits on a central section of the upright lifting shaft 32 and is movably received in the tonearm connection mechanism 920 of the turntable 9, and a first preload element 332, which bears against the sleeve element 331 and the driven element 41. The second preload arrangement 34 comprises a second sleeve element 341 which is pushed onto an upper section of the upright lifting shaft 32, and a second preload element 342 which is inserted into the second sleeve element 341.The arm support platform 35 extends transversely and in an arc shape from the second sleeve element 341. The actuating element 42 comprises a pivot section 421, which is curved upwards and rests against the driven element 41, and an actuating section 422, which is formed integrally with a lower end of the pivot section 421 and extends upwards and forwards.

[0020] With reference to Fig. 5 and Fig. 6 During the rotation of the eccentric cam arrangement 22, the stop section 226 of the oscillating element 222 is pivoted between the raised and lowered states to cause the arm lifting mechanism 3 to move in the up-down direction relative to the base seat 1 between a raised position (as in Fig. 6 shown) and a lowered position (as in Fig. (5 shown). The arm lifting mechanism 3 is higher in the raised position than in the lowered position. The first preload arrangement 33 and the second preload arrangement 34 cushion a downward impact of the arm lifting mechanism 3 to prevent damage to the recording pin 93.

[0021] In this way, the arm lifting mechanism 3 is caused to move in the up-down direction relative to the base seat 1, between the raised position when the abutting section 226 of the oscillating element 222 is in the raised state, and the lowered position when the abutting section 226 is in the lowered state. The height of the arm support platform 35 in the raised position is greater than the height of the arm support platform 35 in the lowered position for supporting and carrying the tonearm 92. In the lowered position, the arm support platform 35 is spaced from and located below the tonearm 92.

[0022] With reference to Fig. 7 and Fig. Furthermore, when the swing element 222 is in the lowered position, the actuating element 42 can be manually operated by a user to pivot in the up-down direction, so that the driven element 41 moves the arm lifting mechanism 3 between the raised position (as in Fig. 8 shown) and the lowered position (as in Fig. (shown in Figure 7). When the arm lifting mechanism 3 is in the raised position, the stop element 31 of the arm lifting mechanism 3 is spaced from the stop section 226 in the up-down direction. When the arm lifting mechanism 3 returns to the lowered position and abuts the stop section 226, the arm lifting mechanism 3 can be driven by the drive mechanism 2 to move automatically in the up-down direction without manually operating the manual control mechanism 4.

[0023] With reference to Fig. 1, Fig. 4 and Fig. The sensing module 5 is in signal communication with the control module 7 and is mounted on the base seat 1. The sensing module 5 comprises a first conductive plate 51 and a second conductive plate 52, which are mounted on the second plate 12 of the base seat 1. The first conductive plate 51 comprises an elongated conductive plate body 511, a first conductive projection 512 projecting from the conductive plate body 511 towards the second conductive plate 52, and a preloading pressure projection 513 connected to an upper end of the conductive plate body 511 to press the first conductive plate 51 towards the second conductive plate 52 by a preload force, so that the preloading pressure projection 513 can removably bear against the eccentric projection 224 of the rotary wheel 221.The second conductive plate 52 comprises an elongated conductive plate body 521 and a second conductive projection 522, which extends from the conductive plate body 521 towards the first conductive plate 51. The second conductive projection 522 is in detachable contact with the first conductive projection 512 and is electrically connected to it.

[0024] With reference to Fig. 5 and Fig. 6. The first conductive plate 51 and the second conductive plate 52 can be connected between a first state (see Fig. 5) and a second state (see Fig. 6) change. In the first state, the preloaded pressure projection 513 is in elastic stop engagement with the eccentric projection 224 of the rotating wheel 221, and the first conductive projection 512 is disengaged from the second conductive projection 522, so that the first conductive plate 51 is not electrically connected to the second conductive plate 52 to generate a sensing signal that is transmitted to the control module 7. In the second state, the first conductive plate 51 is disengaged from the eccentric projection 224 of the rotating wheel 221, and the first conductive projection 512 is in contact engagement with the second conductive projection 522, so that the first conductive plate 51 is electrically connected to the second conductive plate 52 to generate a second sensing signal that is transmitted to the control module 7.

[0025] In this way, the sensing module 5 can detect the rotational state of the rotating wheel 221 in order to switch between the first and second states. When the eccentric projection 224 is in the lowering state to move the arm lifting mechanism 3 into the lowered position, the rotating wheel 221 abuts and presses the first conductive plate 51 to move the sensing module 5 into the first state and generate the first detection signal. When the eccentric projection 224 is in the lifting state to move the arm lifting mechanism 3 into the raised position, the rotating wheel 221 is released from the first conductive plate 51 to move the sensing module 5 into the second state and generate the second detection signal.

[0026] With reference to Fig. 1, Fig. 4 and Fig. The input module 6 is in signal communication with the control module 7 and is attached to the playback housing 91 of the turntable 9. The input module 6 is capable of transmitting a control signal to the control module 7. The control module 7 is located on the playback housing 91 of the turntable 9 and is in signal communication with the main control module 95 of the turntable 9. The control module 7 is activated by the control signal to control and actuate the stepper motor 21 in order to rotate the eccentric cam assembly 22 so that the stop section 226 is moved between the raised and lowered positions.

[0027] In particular, the control module 7 is activated by the control signal to control and actuate the stepper motor 21 in order to rotate the eccentric cam assembly 22 synchronously with the stepper motor 21 in order to move the stop section 226 out of the lifting state (see Fig. 6) into the lowered state (see Fig. 5) or to move from the lowered state to the raised state. The control module 7 and the main control module 95 can be located at different points on the playback housing 91. In other embodiments, the control module 7 and the main control module 95 can be integrated into one circuit board or into two or more circuit boards. The control module 7 can be a controller or a processor.

[0028] More precisely, upon receiving the control signal and the first detection signal, the control module 7 is activated to control and actuate the output shaft 212 of the stepper motor 21 so that it rotates in the first direction (T1), which drives the stop section 226 to swing from the lowered position to the raised position, thus moving the arm lifting mechanism 3 from the lowered position to the raised position, thereby raising the tonearm 92 with the arm support platform 35. Upon receiving the control signal and the second detection signal, the control module 7 is activated to control and actuate the output shaft 212 of the stepper motor 21 so that it rotates in the second direction (T2), which drives the stop section 226 to move the arm lifting mechanism 3 from the raised position to the lowered position, thus releasing the tonearm 92.

[0029] On the other hand, when the stylus 93 of the tonearm 92 reaches the end of the groove (not shown) of the record, a stop signal is generated, indicating the end of the track, and is transmitted via the main control module 95 to the control module 7. At this point, the control module 7, upon receiving an activation signal generated and transmitted by the main control module 95, is activated to control and actuate the stepper motor 21 so that it rotates in the first direction (T1) to drive the stop section 226, which in turn moves the arm lifting mechanism 3 from the lowered position to the raised position, thus lifting the tonearm 92 onto the arm support platform 35. In some embodiments, a light sensor (e.g., a photointerrupter) is provided to generate the stop signal. Since a variety of methods for generating the stop signal are known, a detailed description is omitted.

[0030] With reference to Fig. 5, the stop section 226 is in an initial “zero position” in the lowered state, and the arm lifting mechanism 3 is in the lowered position. With reference to Fig. 1 and Fig. 6. During operation, the stop section 226 is controlled so that it is in the raised position, thus moving the arm lifting mechanism 3 into the raised position. At this stage, the tonearm 92 can be placed on the arm support platform 35 and positioned above and away from the record. The detection module 5 is in its second state, ready to generate the second detection signal and transmit it to the control module 7.

[0031] With reference to Fig. 1, Fig. 5 and Fig. Next, the input module 6 is operated to generate the control signal. Upon receiving the control signal and the second detection signal, the control module 7 is activated to control and actuate the stepper motor 21 to rotate and drive the eccentric cam assembly 22 so that it oscillates around the axis (M) relative to the base seat 1 within the predetermined angular range (A) to move into the lowered state, thus lowering the arm lifting mechanism 3 from the raised position (see Fig. 6) into the lowered position (see Fig. 5) to move. In this way, the stylus 93 of the tonearm 92, which is not supported by the arm support platform 35, can strike the grooves of the record and transmit a signal to the main control module 95, which is converted into an analog audio signal that is amplified and then played back by a loudspeaker. At this stage, the sensing module 5 is in its first state, in which the sensing module 5 generates the first sensing signal, which is transmitted to the control module 7. The control module 7 analyzes and determines that the arm lifting mechanism 3 is in the lowered position and records the lowered position as the initial zero position.In some embodiments, the turntable is designed such that, when the turntable is switched on, the control module 7 can control the stop section 226 so that it is in the lowered position, thus placing the tonearm lifting mechanism 3 in its initial zero position, and the control module 7 records this. After the turntable is switched on, the tonearm lifting mechanism 3 can be controlled so that it is in the raised position to protect the stylus 93.

[0032] When the main control module 95 receives the stop signal, the activation signal is generated and transmitted to the control module 7. Upon receiving the activation signal and the first detection signal, the control module 7 is activated to control and actuate the rotation of the stepper motor 21 to move the stop section 226 into the raised position, thus moving the tonearm lifting mechanism 3 into the raised position. This raises the tonearm 92 to move it away from the record. At this stage, the detection module 5 transmits the second detection signal to the control module 7, which analyzes and determines that the tonearm lifting mechanism 3 is in the raised position and records this.

[0033] Furthermore, the input module 6 can be activated during playback to stop the music. With the control signal and the initial detection signal transmitted to the control module 7, the control module 7 is activated to control and actuate the rotation of the stepper motor 21 to move the stop section 226 into the raised position, thus raising the arm lifting mechanism 3 to lift the tonearm 92 and move it away from the record to stop the music.

[0034] Since the rotation angle of the stepper motor 21 can be controlled to 45 degrees and the eccentric cam assembly 22 rotates synchronously with the stepper motor 21, no additional gear and / or belt connection mechanisms are required for the automatic tonearm lifting device 10, and the arm lifting mechanism 3 can be raised and lowered slowly, thus preventing wear and energy waste on parts caused by the idling of a conventional motor. Furthermore, the sensing module 5 can detect the state of the stop section 226 and generate the second and first sensing signals while the sensing module 5 is being switched on.

[0035] With reference to Fig. 7 and Fig.8 The arm lifting mechanism 3 is caused to move up and down by the user-operated manual control mechanism 4. Thus, the automatic tonearm lifting device 10 provides automatic lifting of the tonearm and allows the turntable 9 to receive tactile feedback on the manual operation of the tonearm 92, as with a conventional mechanical turntable.

[0036] As shown, the stop section 226, together with the stepper motor 21 and the eccentric cam assembly 22, is pivotable between the raised and lowered positions during the rotation of the stepper motor 21 and the eccentric cam assembly 22, in order to move the arm lifting mechanism 3 between the lowered and raised positions. Since the stepper motor 21 is preset within a predetermined angular range to rotate the eccentric cam assembly 22 synchronously, wear and energy waste on the parts caused by motor idling can be prevented. The sensing module 5 can accurately detect the state of the stop section 226 and generate the first and second sensing signals. The manual control mechanism 4 can be operated manually by the user to provide tactile feedback for the manual operation of the tonearm 92.

Claims

[1] Automatic tonearm lifting device for use with a tonearm (92) of a record player (9), comprising: a base seat (1) that can be mounted on the turntable (9); a drive mechanism (2) comprising a stepper motor (21) mounted on the base seat (1) and an eccentric cam assembly (22) coupled to the stepper motor (21) to be rotated by the stepper motor (21) about an axis (M) in a predetermined angular range; and an arm lifting mechanism (3) which is movably attached to the eccentric cam arrangement (22), wherein during the rotation of the eccentric cam arrangement (22) the arm lifting mechanism (3) is moved in an up-down direction relative to the base seat (1) between a raised position and a lowered position, wherein the raised position is higher than the lowered position, wherein the arm lifting mechanism (3) supports and carries the tonearm (92) when the arm lifting mechanism (3) is in the raised position. [2] Automatic tonearm lifting device according to claim 1, wherein the eccentric cam assembly (22) has a vibrating element (222) which is driven by the stepper motor (21) to vibrate about the axis (M), wherein the vibrating element (222) has a stop section (226) which is radially spaced from the axis (M) and is in stop engagement with the arm lifting mechanism (3), such that during the rotation of the eccentric cam assembly (22), the stop section is pivoted between a raised state at a first height (H1) and a lowered state at a second height (H2), wherein the first height (H1) is greater than the second height (H2) in order to move the arm lifting mechanism (3) in the up-down direction relative to the base seat (1) between the raised position and the lowered position, wherein the stop section (226) about the axis (M) by a predetermined angle in the range of 0 It is swivelled up to 180 degrees. [3] Automatic tonearm lifting device according to claim 2, further comprising a control module (7) and a detection module (5) which is in signal communication with the control module (7), wherein the sensor module (5) is mounted on the base seat (1) and detects a rotation state of the eccentric cam arrangement (22) in order to switch between a first state and a second state, wherein the detection module (5) generates a first detection signal and transmits the first detection signal to the control module (7) in the first state, and the detection module (5) generates a second detection signal and transmits the second detection signal to the control module (7) in the second state. [4] Automatic tonearm lifting device according to claim 3, wherein the eccentric cam arrangement (22) further comprises a rotating wheel (221) coupled to and rotated by the stepper motor (21), wherein the oscillating element (222) is connected to the rotating wheel (221), wherein the detection module (5) comprises a first conductive plate (51) and a second conductive plate (52) mounted on the base seat (1), wherein the first conductive plate (51) is forced towards the second conductive plate (52) by a preload force and is removably attached to the rotating wheel (221), and wherein the first conductive plate (51) and the second conductive plate (52) are separated between the first state in which the first conductive plate (51) is in spring-loaded engagement with the rotating wheel (221) and in which the first conductive plate (51) is not electrically connected to the second conductive plate (52) to generate the first signal and the second state in which the first conductive plate (51) is detached from the rotating wheel (221) and in which the first conductive plate (51) is electrically connected to the second conductive plate (52) to generate the second detection signal. [5] Automatic tonearm lifting device according to claim 4, wherein the oscillating element (222) is connected to an end of the rotating wheel (221) along the axis (M) in order to be pivoted with the rotating wheel (221) about the axis (M), wherein the rotating wheel (221) has a wheel body (223) which is coaxially coupled with an output shaft (212) of the stepper motor (21), and an eccentric projection (224) which projects radially from the wheel body (223) in the direction of the detection module (5), wherein the oscillating element (222) has a connecting section (225) which is diametrically opposite the stop section (226), wherein in the first state of the detection module (5) the first conductive plate (51) is in elastic stop engagement with the eccentric projection (224) and the stop section (226) is in the lowered state to bring the arm lifting mechanism (3) into the lowered position, and wherein in the second state of the detection module (5) the first conductive plate (51) has no contact with the eccentric projection (224) and the stop section (226) is in the lifting state to bring the arm lifting mechanism (3) into the raised position. [6] Automatic tonearm lifting device according to claim 3, further comprising an input module (6) which is in signal communication with the control module (7), wherein the input module (6) is operable to transmit a control signal to the control module (7), and the control module (7) is activated by the control signal to control and actuate the stepper motor (21) to rotate the eccentric cam arrangement (22) to move the stop section (226) between the lifting state and the lowering state. [7] Automatic tonearm lifting device according to claim 6, wherein the control module (7) is activated upon receipt of the control signal and the first detection signal to control and actuate an output shaft (212) of the stepper motor (21) such that it rotates in a first direction of rotation (T1) which drives the stop section (226) to move the arm lifting mechanism (3) from the lowered position to the raised position, and the control module (7) is activated upon receipt of the control signal and the second detection signal to control and actuate the output shaft (212) of the stepper motor (21) such that it rotates in a second direction of rotation (T2) which is opposite to the first direction of rotation (T1), which drives the stop section (226) to move the arm lifting mechanism (3) from the raised position to the lowered position. [8] Automatic tonearm lifting device according to claim 7, which is further suitable for use with a main control module (95) of the turntable (9), wherein the control module (7) is suitable for being in signal communication with the main control module (95) so that the control module (7) is activated upon receiving an activation signal which is generated and transmitted by the main control module (95) when the main control module (95) receives a stop signal to control and actuate the stepper motor (21) so that it rotates in the first direction of rotation (T1) to drive the stop section (226) to move the arm lifting mechanism (3) from the lowered position to the raised position. [9] Automatic tonearm lifting device according to claim 2, wherein the stepper motor (21) drives the rotation of the eccentric cam assembly (22) by an angle in the range of 30 degrees to 60 degrees. [10] Automatic tonearm lifting device according to claim 2, further comprising a manual control mechanism (4), wherein the manual control mechanism (4) comprises a driven element (41) connected to the arm lifting mechanism (3) and an actuating element (42) pivotable relative to the base seat (1) and bearing against the driven element (41) so that the actuating element (42) is pivoted during operation to drive the movement of the driven element (41) to cause the arm lifting mechanism (3) to move between the raised position and the lowered position when the stop section (226) is in the lowered state. [11] Automatic tonearm lifting device according to claim 10, wherein the arm lifting mechanism (3) comprises a stop element (31) which is supported by and rests against the oscillating element (222), an upright lifting shaft (32) which is arranged on the stop element (31) and is rigidly connected to the driven element (41), and a first preload arrangement (33) which is guided around the upright lifting shaft (32), a second preload arrangement (34) which is arranged on the upright lifting shaft (32), and an arm support platform (35) which is arranged on the second preload arrangement (34) to support the tonearm (92).

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