Electric rotating arm vinyl record player with manual adjustment function

Abstract

An electric rotating arm vinyl disc player with a manual adjustment function comprises a controller, a disc assembly and a singing arm assembly which are arranged on a machine table, and the singing arm assembly comprises a singing arm, a U-shaped singing arm seat and a singing arm shaft; the independent auxiliary lifting singing arm mechanism and the flexible connection type rotating singing arm mechanism are arranged on the machine table, are in signal connection with the controller, and comprise a lifting rod and a translation lifting rod device; the width of a top cross rod part arranged at the upper part of the lifting rod in the horizontal and vertical direction of the singing arm is greater than the maximum swing distance of the singing arm rotating from a parking position to a playing finishing position; the lower end part of the lifting rod is in contact with the translation lifting rod lifting device in an abutting manner so as to lift the singing arm; a singing arm shaft extending out of the U-shaped singing arm seat penetrates through the singing arm shaft guide hole and is connected with the flexible connection type rotating singing arm mechanism, so that the singing arm can swing left and right around the singing arm shaft under the flexible connection type rotating singing arm mechanism or manual operation. The disc player not only has an automatic playing function of the electric rotating singing arm, but also can manually adjust the singing arm at any time.

Description

TECHNICAL FIELD

[0001] The utility model relates to record player technical field, especially a kind of electrically driven arm black record player with manual adjustment function. BACKGROUND

[0002] Black record player is also called phonograph, as the specific nostalgia of historical traditional object, black record player is still loved, purchased and used by some music lovers. The most traditional record player arm is manually adjusted, but now the black record player has been updated to automatically adjust the arm position for the convenience and durability of users, for example, the existing product of our company has the function of automatically lifting and rotating the arm to each start or stop playing position by fixing the arm shaft with the arm lifting mechanism and the arm rotating mechanism.

[0003] However, the above-mentioned electrically driven arm black record player only has the function of electrically rotating the arm to play, and the user can only operate through the key module, and cannot manually adjust the playing position of the arm like the traditional black record player. Many users complain that this purely electric black record player lacks the fun of manually adjusting the arm of the traditional black record player, and hope to launch a dual-purpose black record player with both manual adjustment function and electrically driven arm function. SUMMARY

[0004] The utility model aims at providing a kind of electrically driven arm black record player with manual adjustment function, which has the automatic playing function of electrically rotating the arm, can adapt to the demand of user manual adjustment arm at any time, and has simple structure, low manufacturing cost, durability and not easy to damage.

[0005] The technical solution proposed by the utility model is as follows:

[0006] An electrically driven arm black record player with manual adjustment function, comprising a table, a controller, a turntable assembly and an arm assembly, the controller, the turntable assembly and the arm assembly are arranged on the table, and an independent auxiliary arm lifting mechanism and a flexible arm rotating mechanism are also provided, both of which are arranged on the table and connected to the controller;

[0007] The arm assembly comprises an arm, a U-shaped arm seat and an arm shaft, the U-shaped arm seat has a horizontal shaft passing through the rear section of the arm, and the arm is connected to the horizontal shaft to swing up and down under the action of the independent auxiliary arm lifting mechanism or manual external force;

[0008] The independent auxiliary lifting arm mechanism comprises a lifting rod and a translation lifting rod device, a top horizontal rod part provided on the upper part of the lifting rod is supported below the middle part of the arm, the width of the top horizontal rod part in the horizontal and vertical direction of the arm is greater than the maximum swing distance of the middle part of the arm from the parking position to the playing end position, and the lower end of the lifting rod is in contact with the translation lifting rod device, so that the lifting rod can perform lifting action on the arm with the action of the translation lifting rod device.

[0009] The U-shaped arm shaft extending downward is connected with the flexible connection type rotating arm mechanism through the arm shaft guide hole in a corner of the machine table, so that the arm can swing left and right around the arm shaft under the action of the flexible connection type rotating arm mechanism or manual external force.

[0010] Preferably, the flexible connection type rotating arm mechanism comprises a translation push-pull device, a swing gear assembly and a driven rotating assembly arranged in sequence.

[0011] The translation push-pull device comprises a translation push-pull member, a translation push-pull driving motor, a third gear, a second linear guide rail group and a translation positioning circuit board, the translation push-pull driving motor, the second linear guide rail group and the translation positioning circuit board are fixedly arranged on the machine table, the translation push-pull member is composed of a second guide rail slider part, a second rack part, a second positioning contact block and a protruding hook part, the second guide rail slider part is matched and connected on the second linear guide rail group to slide, the third gear driven by the output shaft of the translation push-pull driving motor is matched and connected with the second rack part to drive the translation push-pull member to translate as a whole, the translation positioning circuit board is provided with a pull-to-end position sensing switch and a push-to-end position sensing switch, the second positioning contact block is matched and connected with the pull-to-end position sensing switch or the push-to-end position sensing switch, and the protruding hook part is movably connected with the swing gear assembly.

[0012] The swing gear assembly comprises a swing shaft bolt, a swing base, an arm driving motor, a fourth gear, a fifth gear and a retractable buckle block, the retractable buckle block is arranged on the first end corner of the swing base close to the translation push-pull device and is movably connected with the protruding hook part of the translation push-pull device, the arm driving motor is arranged on the swing base, the fourth gear driven by the output shaft of the arm driving motor is matched and connected with the fifth gear, the fifth gear is arranged on the second end corner of the swing base closest to the driven rotating assembly, and the outer part of the tooth pattern of the fifth gear is exposed outside the outer periphery of the swing base, and the swing gear assembly is movably connected with the machine table through the swing shaft bolt arranged on the third end corner of the swing base close to the driven rotating assembly, so that the swing gear assembly swings around the swing shaft bolt to be in front of the driven rotating assembly or separated from the driven rotating assembly when the swing gear assembly is subjected to the pushing force or the pulling force of the translation push-pull device.

[0013] The driven rotating assembly comprises a turntable driven positioning gear, a four-claw rotating positioning member, and a rotating positioning circuit board. The fifth gear of the turntable driven positioning gear is matched with the swing gear engagement assembly in a front swing engagement state. The four-claw rotating positioning member is provided with a turntable shaft buckle hole matched with a buckle of an end part of a turntable shaft. The turntable shaft passes through a turntable shaft guide hole of a machine table, a center hole of the turntable driven positioning gear, and the turntable shaft buckle hole in sequence, so as to be fixedly connected with the turntable driven positioning gear and the four-claw rotating positioning member. The four-claw rotating positioning member is outwardly provided with, in sequence, a stop swing placement positioning touch block, a 12-inch record starting positioning touch block, a 7-inch record starting positioning touch block, and a record playing end positioning touch block, which are different in distance from the turntable shaft buckle hole. The rotating positioning circuit board is fixedly arranged on the machine table at a position matched with the four-claw rotating positioning member. The rotating positioning circuit board is provided with, in sequence, a stop swing placement sensing switch, a 12-inch record starting sensing switch, a 7-inch record starting sensing switch, and a record playing end sensing switch. The distance between each of the stop swing placement positioning touch block, the 12-inch record starting positioning touch block, the 7-inch record starting positioning touch block, and the record playing end positioning touch block is greater than the distance between each of the stop swing placement sensing switch, the 12-inch record starting sensing switch, the 7-inch record starting sensing switch, and the record playing end sensing switch. Therefore, at any moment, at most one of the positioning touch blocks of the four-claw rotating positioning member can contact the matched sensing switch on the rotating positioning circuit board.

[0014] The distance between the push-to-end sensing switch and the pull-to-end sensing switch is matched with the maximum distance between the swing gear engagement assembly and the driven rotating assembly and the length of the second rack part.

[0015] Preferably, the translational lifting lifting rod device comprises a translational lifting member, a translational lifting driving motor, a first gear, a second gear, a first linear guide rail group, and a lifting positioning circuit board. The translational lifting member comprises a first guide rail sliding block part, a first rack part, and a first positioning touch block. The translational lifting driving motor, the first linear guide rail group, the lifting positioning circuit board, and the second gear are fixedly arranged on the machine table. The lifting positioning circuit board is provided with a lifting-to-end sensing switch and a lowering-to-end sensing switch. The first gear driven by the output shaft of the translational lifting driving motor is matched with the second gear. The second gear is matched with the first rack part to drive the translational lifting member to translate as a whole. The first guide rail sliding block part is matched with the first linear guide rail group to be slidingly connected. The first positioning touch block is matched with the lifting-to-end sensing switch or the lowering-to-end sensing switch. The upper surface of the lifting sliding table is a slope.

[0016] The distance between the up-to-the-max position inductive switch and the down-to-the-min position inductive switch, the length of the lifting slide, and the length of the first rack portion are all matched with each other.

[0017] Preferably, the lifting rod comprises, from top to bottom, a top cross rod portion, a vertical rod cover portion, a vertical rod portion and a contact sliding portion, which are fixedly connected with each other, the lifting rod is further provided with a reset spring matched with the outer periphery of the vertical rod, the lifting rod is further provided with a lifting rod guide hole snap ring, the outer periphery wall of the lifting rod guide hole snap ring is matched and engaged in the lifting rod guide hole of the machine table, the inner periphery wall of the lifting rod guide hole snap ring is matched and embedded in the outer periphery wall of the lower section of the vertical rod, the reset spring is fixedly connected with the lower surface of the vertical rod cover portion and the upper surface of the lifting rod guide hole snap ring respectively, and the contact sliding portion is in contact with the upper surface of the lifting slide of the translational lifting member.

[0018] Preferably, a straight torsion spring assembly is further provided, which comprises a straight torsion spring, a first torsion spring buckle and a second torsion spring buckle, the first torsion spring buckle is fixedly arranged on the second end corner portion of the swing base closest to the driven rotating assembly, the second torsion spring buckle is fixedly arranged on the lower surface of the machine table, the two ends of the straight torsion spring are fixedly arranged in the first torsion spring buckle and the second torsion spring buckle respectively, the middle part of the straight torsion spring is wound around the swing shaft bolt on the side of the outer periphery close to the driven rotating assembly, so that the whole straight torsion spring is bent to form an obtuse angle broken line shape towards the driven rotating assembly, and the swing gear assembly swings and engages with the front swing of the driven rotating assembly under the deformation restoring force of the straight torsion spring.

[0019] Preferably, the turntable assembly comprises a turntable and a turntable rotating motor, the output shaft of the turntable rotating motor is connected with the turntable through the turntable guide hole in the center of the machine table to drive the rotation of the turntable.

[0020] Preferably, the turntable assembly and the lifting rod are arranged on the upper surface of the machine table, and the controller, the flexible connection type rotating turntable arm mechanism and the translational lifting lifting rod device are arranged on the lower surface of the machine table.

[0021] Preferably, the machine table is further provided with a key module connected with the controller.

[0022] Preferably, the lifting positioning circuit board and the translational positioning circuit board are arranged on the same positioning circuit board.

[0023] Compared with the prior art, the utility model has the following beneficial effects:

[0024] ①The independent auxiliary lifting turntable arm mechanism composed of the lifting rod 5 and the translational lifting lifting rod device is adopted, so that the independent auxiliary lifting turntable arm mechanism and the turntable arm assembly are independently arranged and separated in structure, and the defect that the turntable arm shaft and the turntable arm lifting mechanism are fixedly connected to enable the turntable arm to be played only by rotating in an electric mode and unable to be played by manually adjusting the position of the turntable arm in the prior art can be avoided.

[0025] In combination with the structure that the transverse shaft 60 is arranged between the two inner side walls of the U-shaped tone arm base and is transversely through the rear section of the tone arm and is movably connected with the tone arm, the tone arm can be swung up and down around the transverse shaft 60 to realize the functions of electrically lifting or lowering the tone arm under the action of the independent auxiliary lifting tone arm mechanism, and the tone arm can be swung up and down around the transverse shaft 60 to realize the functions of manually lifting or lowering the tone arm at any time.

[0026] The utility model discloses a flexible connection type rotating tone arm mechanism which is composed of a translation and pulling device, a swing toothed assembly 9 and a driven rotating assembly 12 arranged in sequence, the tone arm assembly is fixedly connected with the driven rotating assembly 12, the translation and pulling device is movably connected with the swing toothed assembly 9, the swing toothed assembly 9 is pushed or pulled by the translation and pulling device to realize the matching toothed or separated state between the swing toothed assembly 9 and the driven rotating assembly 12, and thus the flexible connection between the tone arm driving motor and the tone arm assembly is realized.

[0027] When the swing toothed assembly 9 is pushed by the translation and pulling device to the position toothed with the driven rotating assembly 12, the power output by the tone arm driving motor 31 on the swing toothed assembly 9 is transmitted to the driven rotating assembly 12 through the fourth gear 55 and the fifth gear 56 to drive the whole driven rotating assembly 12 to rotate, so that the tone arm assembly fixedly connected with the driven rotating assembly 12 rotates synchronously, and the function of automatically rotating the tone arm to the set position is realized.

[0028] After the tone arm reaches the set position, the corresponding positioning contact block of the four-jaw type rotating positioning member on the driven rotating assembly 12 triggers the corresponding inductive switch to transmit a signal to the controller 50, so that the controller 50 controls the tone arm driving motor 31 on the swing toothed assembly 9 to stop working, and the controller 50 controls the translation and pulling device to reverse the action to pull the swing toothed assembly 9 back, so that the swing toothed assembly 9 and the driven rotating assembly 12 are in the separated state without toothed.

[0029] When the swing toothed assembly 9 and the driven rotating assembly 12 are in the separated state without toothed, the user can manually rotate the tone arm without damaging the record player, so that the defect that the tone arm shaft and the tone arm rotating mechanism are fixedly connected and the tone arm can only be rotated by the electric mode to play and cannot be manually adjusted to play is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is the three-dimensional structure schematic diagram of the utility model;

[0031] Figure 2 is the exploded structure schematic diagram of the utility model;

[0032] Figure 3 is another perspective view of the utility model;

[0033] Figure 4 is the partial bottom view structural schematic diagram of the utility model when the swing toothed assembly 9 and the driven rotating assembly 12 are not toothed connection state;

[0034] Figure 5 is the partial bottom view structural schematic diagram of the utility model when the swing toothed assembly 9 and the driven rotating assembly 12 are toothed connection state;

[0035] Figure 6 is the partial bottom view structural schematic diagram of the utility model when the swing toothed assembly 9 and the driven rotating assembly 12 are not toothed connection state;

[0036] Figure 7 is the partial bottom view structural schematic diagram of the utility model when the swing toothed assembly 9 and the driven rotating assembly 12 are toothed connection state;

[0037] Figure 8 is the structural schematic diagram of the utility model's tone arm assembly;

[0038] Figure 9 is the structural schematic diagram of the utility model's lifting rod 5;

[0039] Figure 10 is the structural schematic diagram of the utility model's translation lifting and lowering lifting rod device 8 other components except lifting and positioning circuit board 6-1;

[0040] Figure 11 is another perspective view of the utility model's translation lifting member 63 structural schematic diagram;

[0041] Figure 12 is the structural schematic diagram of the utility model's translation push-pull device 7 other components except translation positioning circuit board 6-2;

[0042] Figure 13 is the structural schematic diagram of the utility model's lifting and positioning circuit board 6-1 and translation positioning circuit board 6-2;

[0043] Figure 14 is the structural schematic diagram of the utility model's swing toothed assembly 9 and straight torsion spring 33, first torsion spring buckle 47;

[0044] Figure 15 is another perspective view of the utility model's swing toothed assembly 9 and straight torsion spring 33, first torsion spring buckle 47 structural schematic diagram;

[0045] Figure 16This is a schematic diagram of the structure of the tonearm driven positioning gear 35, the four-jaw rotating positioning component 62, the U-shaped tonearm seat 59, and the tonearm shaft 4 of this utility model.

[0046] Figure 17 This is a structural schematic diagram from another perspective of the tonearm driven positioning gear 35, the four-jaw rotating positioning component 62, the U-shaped tonearm seat 59, and the tonearm shaft 4 of this utility model.

[0047] Figure 18 This is a schematic diagram of the structure of the rotation positioning circuit board 62 of this utility model;

[0048] Figure 19 This is a schematic diagram showing the setting of four positioning positions of the tonearm 3 of this utility model: the parking position 64, the starting position for playing a 12-inch record 65, the starting position for playing a 7-inch record 66, and the ending position 67.

[0049] Figure 20 This is a partial bottom view of the structure of the swing engagement assembly 9 and the driven rotation assembly 12 in the engagement connection state of Embodiment 2 of this utility model;

[0050] Figure 21 This is a schematic diagram of the structure of the swing engagement assembly 9 in Embodiment 2 of this utility model. Detailed Implementation

[0051] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention. The present invention will be described in detail below with reference to the accompanying drawings. Example 1

[0052] like Figures 1 to 19 As shown in Embodiment 1, an electric turntable with manual adjustment function is provided. It includes a base 1, a controller 50, a turntable assembly, a tonearm assembly, an independent auxiliary tonearm lifting mechanism, and a flexible-connection rotating tonearm mechanism. The turntable assembly includes a turntable 3 and a turntable rotation motor 11. The independent auxiliary tonearm lifting mechanism includes a lifting rod 5 and a translational lifting rod device 8. The turntable assembly, the independent auxiliary tonearm lifting mechanism, and the flexible-connection rotating tonearm mechanism are all connected to the controller 50 via signal. A button module 15 is also provided at the front end of the base 1 and is connected to the controller 50 via signal. The controller 50 is a PLC controller. The turntable 3, tonearm assembly, and lifting rod 5 are all located on the upper surface of the base 1. The controller 50, turntable rotation motor 11, translational lifting rod device 8, and flexible-connection rotating tonearm mechanism are all located on the lower surface of the base. The output shaft of the turntable rotation motor 11 passes through the turntable guide hole in the center of the base 1 and connects to the turntable 3 to drive the turntable 3 to rotate.

[0053] The arm assembly comprises an arm 3, a U-shaped arm base 59, an arm shaft 4, and a horizontal shaft 60. The horizontal shaft 60 is arranged in the two side walls of the U-shaped arm base 59 and is in movable connection with the rear section of the arm 3, so that the arm 3 can swing up and down around the horizontal shaft 60 under the action of an independent auxiliary lifting arm mechanism or manual external force. The arm shaft 4 extending downward from the U-shaped arm base 59 passes through an arm shaft guide hole 46 located at a corner of the machine table 1 and is connected with a flexible connection type rotating arm mechanism, so that the arm 3 can swing left and right around the arm shaft 4 under the action of the flexible connection type rotating arm mechanism or manual external force.

[0054] The translation and lifting lifting rod assembly 8 comprises a translation and lifting member 63, a translation and lifting driving motor 21, a first gear 25, a second gear 26, a first linear guide rail set 24, and a lifting positioning circuit board 6-1. The translation and lifting member 63 is composed of a first guide rail slider part 63-1, a first rack part 63-2, a first positioning contact block 63-3, and a lifting sliding table 63-4. The translation and lifting driving motor 21, the first linear guide rail set 24, the lifting positioning circuit board 6-1, and the second gear 26 are fixedly arranged on the lower surface of the machine table 1. The lifting positioning circuit board 6-1 is provided with a lifting completion position sensing switch 17 and a lowering completion position sensing switch 18. The first gear 25 driven by the output shaft of the translation and lifting driving motor 21 is arranged between the lower surface of the machine table 1 and the translation and lifting driving motor 21 and is in meshing engagement with the second gear 26. The second gear 26 is in meshing engagement with the first rack part 63-2 to drive the translation and lifting member 63 to translate as a whole. The first guide rail slider part 63-1 is in sliding connection with the first linear guide rail set 24. The first positioning contact block 63-3 is matched with the lifting completion position sensing switch 17 or the lowering completion position sensing switch 18. The upper surface of the lifting sliding table 63-4 is a slope. The distance between the lifting completion position sensing switch 17 and the lowering completion position sensing switch 18, the length of the lifting sliding table 63-4, and the length of the first rack part 63-2 are matched with each other.

[0055] The lifting rod 5 comprises, from top to bottom, a top cross rod part 5-1, a vertical rod cover part 5-2, a vertical rod part 5-3 and a contact sliding part 5-4 which are fixedly connected with each other. The top cross rod part 5-1 at the upper part of the lifting rod 5 is supported below the middle section of the tone arm 3. The width of the top cross rod part 5-1 in the horizontal and vertical direction of the tone arm 3 is greater than the maximum swing distance of the middle section of the tone arm 3 from the parking position 64 to the playing end position 67. The lifting rod 5 is further provided with a reset spring 5-5 which is matched and embedded in the outer periphery of the vertical rod 5-3. The lifting rod 5 is further provided with a lifting rod guide hole snap ring 5-6. The outer peripheral wall of the lifting rod guide hole snap ring 5-6 is matched and engaged in the lifting rod guide hole 13 of the machine table 1. The inner peripheral wall of the lifting rod guide hole snap ring 5-6 is matched and embedded in the outer peripheral wall of the lower section of the vertical rod 5-3. The reset spring 5-5 is fixedly connected with the lower surface of the vertical rod cover part 5-2 and the upper surface of the lifting rod guide hole snap ring 5-6 respectively. The contact sliding part 5-4 at the lower end of the lifting rod 5 is in contact with the upper surface of the lifting slide 63-4 of the translation and lifting member 63, so that the lifting rod 5 can perform lifting action on the tone arm according to the action of the translation and lifting lifting rod device.

[0056] The flexible connection type rotating tone arm mechanism comprises, in sequence, a translation and pulling device 7, a swing gear assembly 9 and a driven rotating assembly 12.

[0057] The translation and pulling device 7 comprises a translation and pulling member 10, a translation and pulling driving motor 28, a third gear 52, a second linear guide rail set 53 and a translation and positioning circuit board 6-2. The translation and pulling driving motor 28, the second linear guide rail set 53 and the translation and positioning circuit board 6-2 are fixedly arranged on the lower surface of the machine table 1. The translation and pulling member 10 is composed of a second guide rail sliding block part 10-1, a second rack part 10-2, a second positioning contact block 10-3 and a protruding hook part 10-4. The translation and positioning circuit board 6-2 is provided with a pulling end position sensing switch 19 and a pushing end position sensing switch 20. The second guide rail sliding block part 10-1 is matched and engaged on the second linear guide rail set 53 for sliding connection. The third gear 52 driven by the output shaft of the translation and pulling driving motor 28 is matched and engaged with the second rack part 10-2 for driving the translation and pulling member 10 to translate as a whole. The second positioning contact block 10-3 is matched and suitable for the pulling end position sensing switch 19 and the pushing end position sensing switch 20. The protruding hook part 10-4 is movably connected with the swing gear assembly 9.

[0058] The lifting positioning circuit board 6-1 and the translation and positioning circuit board 6-2 are arranged on the same L-shaped circuit board 6.

[0059] The swing gear assembly 9 comprises a swing shaft bolt 58, a swing base 34, a tone arm drive motor 31, a fourth gear 55, a fifth gear 56, and a forward and backward clamping block 57. The forward and backward clamping block 57 is arranged on the swing base 34 near the first end corner 34-1 of the translation push-pull device and is matched with the convex clamping hook part 10-4 of the translation push-pull device to be connected movably. The tone arm drive motor 31 is arranged on the central part of the swing base 34. The output shaft of the tone arm drive motor 31 passes through the driving guide hole in the center of the swing base 34 and is connected with the fourth gear 55. The fourth gear 55 is matched with the fifth gear 56. The fifth gear 56 is arranged on the second end corner 34-2 of the swing base 34 closest to the driven rotating assembly 12. The outer side part of the fifth gear 56 is exposed outside the peripheral edge of the swing base 34. The swing shaft bolt 58 passes through the third end corner 34-3 of the swing base 34 closest to the driven rotating assembly 12 and is movably connected with the machine table 1 so that the swing gear assembly 9 swings around the swing shaft bolt 58 to be matched with the forward swing of the driven rotating assembly 12 or to be separated from the backward swing of the driven rotating assembly 12 when the swing gear assembly 9 is subjected to the pushing force or the pulling force of the translation push-pull device 7.

[0060] A straight torsion spring assembly is further arranged. The straight torsion spring assembly comprises a straight torsion spring 33, a first torsion spring clamping block 47, and a second torsion spring clamping block 49. The first torsion spring clamping block 47 is fixedly arranged on the second end corner 34-2 of the swing base 34 closest to the driven rotating assembly 12. The second torsion spring clamping block 49 is fixedly arranged on the lower surface of the machine table 1 near the translation push-pull device 7. The two ends of the straight torsion spring 33 are respectively fixedly arranged in the first torsion spring clamping block 47 and the second torsion spring clamping block 49. The middle part of the straight torsion spring 33 is bent to form an obtuse angle broken line shape towards the driven rotating assembly 12 around the swing shaft bolt 58 near the side outer periphery of the driven rotating assembly 12. The swing gear assembly 9 swings to be matched with the forward swing of the driven rotating assembly 12 under the deformation restoring force of the straight torsion spring 33.

[0061] The driven rotating assembly 12 comprises a tone arm driven positioning gear 35, a four-jaw rotating positioning member 41, and a rotating positioning circuit board 62. The tone arm driven positioning gear 35 is arranged to be matched with the fifth gear 56 of the swing gear assembly 9 in the forward swing matching state and is matched with the fourth gear 55 of the swing gear assembly 9 in the backward swing separation state.

[0062] The central part or non-jaw end of the four-jaw rotating positioning member 41 is provided with a tone arm shaft clamping hole 36 matched with the end part of the tone arm shaft 4. The tone arm shaft 4 passes through the tone arm shaft guide hole 46 of the machine table 1, the central hole of the tone arm driven positioning gear 35, and the tone arm shaft clamping hole 36 in sequence so as to be fixedly connected with the tone arm driven positioning gear 35 and the four-jaw rotating positioning member 41.

[0063] The four-pronged rotating positioning member 41 is provided with, in sequence from the side away from the driven rotating assembly 12, an outward protruding and distance-variable stop play positioning contact block 37 from the record arm shaft buckle hole 36, a 12-inch record starting positioning contact block 38, a 7-inch record starting positioning contact block 39, and a record play end positioning contact block 40. The rotating positioning circuit board 62 is fixedly arranged at a position corresponding to the four-pronged rotating positioning member 41 on the lower surface of the machine table 1. The rotating positioning circuit board 62 is provided with, in sequence, a stop play sensing switch 44 corresponding to the distance from the record arm shaft buckle hole 36, a 12-inch record starting sensing switch 43, a 7-inch record starting sensing switch 42, and a record play end sensing switch 45. The distance between the stop play positioning contact block 37, the 12-inch record starting positioning contact block 38, the 7-inch record starting positioning contact block 39, and the record play end positioning contact block 40 is greater than the distance between the stop play sensing switch 44, the 12-inch record starting sensing switch 43, the 7-inch record starting sensing switch 42, and the record play end sensing switch 45, so that, at any time, at most one of the stop play positioning contact block 37, the 12-inch record starting positioning contact block 38, the 7-inch record starting positioning contact block 39, and the record play end positioning contact block 40 can contact the corresponding stop play sensing switch 44, 12-inch record starting sensing switch 43, 7-inch record starting sensing switch 42, or record play end sensing switch 45 on the rotating positioning circuit board 62.

[0064] The distance between the push-to-end sensing switch 20 and the pull-to-end sensing switch 19 is matched with the maximum distance between the swing gear assembly 9 and the driven rotating assembly 12 and the length of the second rack portion 10-2.

[0065] The position sensing switch can be an optical sensor. When the positioning contact block reaches the position sensing switch, the optical signal is blocked to trigger an electrical signal.

[0066] The machine table 1 is further provided with a button module 15 connected to the controller 50.

[0067] The steps of the electric working process of the embodiment are as follows:

[0068] (1) After placing a 7-inch or 12-inch record into the turntable, press the "7-inch / 12-inch mode selection" button in the button module 15 to initialize the starting playback position in the controller 50, and then press the play button. The controller 50 receives the signal to start the lifting drive motor 21 in the positive direction. The first gear 25 and the second gear 26 are matched with the first rack section 63-2 to drive the translation lifting member 63 in the positive direction. The first positioning touch block 63-3 of the translation lifting member 63 also moves away from the lowering position sensing switch 18 of the lifting positioning circuit board 6-1 and moves in the direction of the lifting position sensing switch 17 with the entire translation lifting member 63 moving in the positive direction. The upper surface slope of the lifting slide 63-4 of the translation lifting member 63 will cause the entire lifting lever 5 to be lifted during the positive translation process. The record arm 3 swings upward in the vertical direction along with the lifting of the top crossbar section 5-1 and leaves the record arm cradle 68 of the parking position 64;

[0069] (2) When the first positioning touch block 63-3 of the translation lifting member 63 moves in the positive direction to the lifting position sensing switch 17 and triggers it, the controller 50 receives the signal to stop the lifting drive motor 21 from moving. The lifting lever 5 is in contact with the highest point of the upper surface slope of the lifting slide 63-4, and the record arm 3 also swings upward and hovers directly above the record arm cradle 68 of the parking position 64. The controller 50 simultaneously starts the translation push-pull drive motor 28 in the positive direction to drive the translation push-pull member 10 in the positive direction to approach the swing meshing assembly 9 through the third gear 52 and the second rack section 10-2. The second positioning touch block 10-3 of the translation push-pull member 10 also moves away from the pull position sensing switch 19 of the translation positioning circuit board 6-2 and moves in the direction of the push position sensing switch 20 with the entire translation push-pull member 10 moving in the positive direction.

[0070] (3) The swing meshing assembly 9 always has a tendency to swing forward to the driven rotating assembly 12 and mesh due to the deformation restoring force of the straight torsion spring 33 bending towards the driven rotating assembly 12 on one side of the swing shaft bolt 58. As the translation push-pull member 10 approaches the swing meshing assembly 9, the translation push-pull device's pulling force on the swing meshing assembly 9 decreases through the structure of the convex hook section 10-4 of the translation push-pull member 10 and the advance and retreat buckle block 57 of the swing meshing assembly 9 matching and engaging in active connection. Therefore, the swing meshing assembly 9 will also swing forward to the driven rotating assembly 12 around the swing shaft bolt 58 under the action of the deformation restoring force of the straight torsion spring 33.

[0071] (4) When the second positioning contact block 10-3 of the translation push-pull component 10 is positively translated to reach and trigger the push-to-end position sensing switch 20, the controller 50 receives the signal to stop the translation push-pull drive motor 28 from acting, the translation push-pull device lowers the pulling force on the swing gear assembly 9 to the minimum, and the swing gear assembly 9 is swung forward around the swing shaft bolt 58 to the state of meshing with the driven rotating assembly 12 under the deformation restoring force of the straight torsion spring 33; the controller 50 simultaneously starts the tone arm drive motor 31 to act positively to drive the four-jaw type rotating positioning component 41 and the tone arm assembly to rotate synchronously in the positive direction through the fourth gear 55 and the fifth gear 56 matching and meshing with the tone arm driven positioning gear 35, the stop placement positioning contact block 37 of the four-jaw type rotating positioning component 41 starts to move away from the stop placement sensing switch 44 of the rotating positioning circuit board 62, the tone arm shaft 4 and the U-shaped tone arm seat 59 together with the tone arm 3 lifted by the top cross bar part 5-1 of the lifting rod 5 are positively rotated to the seven-inch record starting playing position 65 or the twelve-inch record starting playing position 66, the seven-inch record starting positioning contact block 39 of the four-jaw type rotating positioning component 41 approaches the seven-inch record starting sensing switch 42 of the rotating positioning circuit board 62 or the twelve-inch record starting positioning contact block 38 approaches the twelve-inch record starting sensing switch 43 of the rotating positioning circuit board 62;

[0072] (5) When the tone arm 3 lifted by the top cross bar part 5-1 together with the U-shaped tone arm seat 59 and the tone arm shaft 4 is rotated to the seven-inch record starting playing position 65 or the twelve-inch record starting playing position 66, that is, the seven-inch record starting positioning contact block 39 of the four-jaw type rotating positioning component 41 reaches and triggers the seven-inch record starting sensing switch 42 of the rotating positioning circuit board 62 or the twelve-inch record starting positioning contact block 38 reaches and triggers the twelve-inch record starting sensing switch 43 of the rotating positioning circuit board 62, the controller 50 receives the signal to stop the tone arm drive motor 31 from acting;

[0073] The controller 50 simultaneously starts the translation push-pull drive motor 28 to act reversely to drive the translation push-pull component 10 to reversely translate to pull away the swing gear assembly 9 reversely, and the second positioning contact block 10-3 of the translation push-pull component 10 also moves away from the push-to-end position sensing switch 20 of the translation positioning circuit board 6-2 and translates to the direction of the pull-to-end position sensing switch 19 with the entire translation push-pull component 10 reversely translating;

[0074] With the reverse pulling away of the translation push-pull member 10 to the swing gear assembly 9, the structure of the active connection through the matching and buckling of the convex hook part 10-4 of the translation push-pull member 10 and the in-and-out buckle block 57 of the swing gear assembly 9, the pulling force of the translation push-pull device 7 to the swing gear assembly 9 is enhanced and greater than the deformation restoring force of the straight torsion spring 33, and the swing gear assembly 9 thus swings away from the driven rotating assembly 12 around the swing shaft bolt 58, and the fifth gear 56 is disengaged from the toothed state with the tone arm driven positioning gear 35;

[0075] (6) When the second positioning contact block 10-3 of the translation push-pull member 10 is reversely translated to reach and trigger the pull-out position sensing switch 19, the controller 50 receives the signal to stop the action of the translation push-pull drive motor 28, the reverse pulling away of the translation push-pull member 10 to the swing gear assembly 9 reaches the maximum distance, and the swing away of the swing gear assembly 9 from the driven rotating assembly 12 around the swing shaft bolt 58 also reaches the maximum distance;

[0076] The controller 50 simultaneously starts the reverse action of the lifting drive motor 21 to drive the reverse translation of the translation lifting member 63 through the matching and toothed transmission of the first gear 25 and the second gear 26 with the first rack part 63-2, and the first positioning contact block 63-3 of the translation lifting member 63 also moves away from the lift-out position sensing switch 17 of the lifting positioning circuit board 6-1 and translates in the direction of the drop-out position sensing switch 18 with the reverse translation of the entire translation lifting member 63, and the upper surface slope of the lifting slide 63-4 of the translation lifting member 63 will make the entire lifting lever 5 drop during the reverse translation, and the tone arm 3 will drop in the vertical direction around the horizontal shaft 6 with the drop of the top horizontal lever part 5-1;

[0077] (7) When the first positioning contact block 63-3 of the translation lifting member 63 is reversely translated to reach and trigger the drop-out position sensing switch 18, the controller 50 receives the signal to stop the action of the lifting drive motor 21, the lifting lever 5 is in contact with the lowest point of the upper surface slope of the lifting slide 63-4, and the tone arm 3 also drops with the drop of the top horizontal lever part 5-1 to the contact of the stylus at the front end of the tone arm 3 with the record, the controller 50 simultaneously starts the action of the turntable rotating motor 11 to control the rotation of the turntable 2 together with the record, and starts to play the record;

[0078] (8) When the stylus drives the tone arm 3 to play along the track groove on the record to the end of the record playing position 67, the end of the record playing position 41 of the four-claw type rotating positioning member 40 reaches and triggers the end of the record playing position sensing switch 45 of the rotating positioning circuit board 62, and the controller 50 receives the signal to stop the rotation of the turntable motor 11; At the same time, the controller 50 starts the lifting drive motor 21 to move forward to drive the translational lifting member 63 to move forward by matching the first gear 25 and the second gear 26 with the first rack part 63-2, and the first positioning touch block 63-3 of the translational lifting member 63 also moves away from the lowering position sensing switch 18 of the lifting positioning circuit board 6-1 and moves forward with the entire translational lifting member 63, and the lifting slide 63-4 of the translational lifting member 63 moves forward in the process of the lifting slide 63-4 of the translational lifting member 63, which will make the entire lifting rod 5 contact and lift, and the tone arm 3 will swing in the vertical direction along with the lifting of the top horizontal rod part 5-1, and the stylus will be separated from the record;

[0079] (9) When the first positioning touch block 63-3 of the translational lifting member 63 moves forward to the end of the record playing position sensing switch 17, the controller 50 receives the signal to stop the lifting drive motor 21, and the lifting rod 5 contacts the highest point of the lifting slide 63-4, and the tone arm 3 also swings to the end of the record playing position 67; At the same time, the controller 50 starts the translational push-pull drive motor 28 to move forward to drive the translational push-pull member 10 to move forward to the swing meshing assembly 9 by matching the third gear 52 and the second rack part 10-2, and the second positioning touch block 10-3 of the translational push-pull member 10 also moves away from the pulling position sensing switch 19 of the translational positioning circuit board 6-2 and moves forward with the entire translational push-pull member 10, and the lifting slide 63-4 of the translational lifting member 63 moves forward in the process of the lifting slide 63-4 of the translational lifting member 63, which will make the entire lifting rod 5 contact and lift, and the tone arm 3 will swing in the vertical direction along with the lifting of the top horizontal rod part 5-1, and the stylus will be separated from the record;

[0080] The swing meshing assembly 9 is always subjected to the deformation restoring force of the straight torsion spring 33 due to the bending of the swing shaft bolt 58 to the side of the driven rotating assembly 12, which has a trend of swinging forward to the driven rotating assembly 12 and meshing, and as the translational push-pull member 10 moves closer to the swing meshing assembly 9, the convex hook part 10-4 of the translational push-pull member 10 and the advance and retreat buckle block 57 of the swing meshing assembly 9 are matched and connected, and the pulling force of the translational push-pull device 7 on the swing meshing assembly 9 is reduced, so the swing meshing assembly 9 will also swing forward to the driven rotating assembly 12 under the action of the deformation restoring force of the straight torsion spring 33;

[0081] (10) When the second positioning contact block 10-3 of the translational push-pull member 10 is positively translated to reach and trigger the push-to-end position sensing switch 20, the controller 50 receives the signal to stop the translational push-pull drive motor 28 from acting, and the translational push-pull device lowers the pulling force on the swing gear assembly 9 to the minimum, and the swing gear assembly 9 is swung forward around the swing shaft bolt 58 to the state of being meshed with the driven rotating assembly 12 under the deformation restoring force of the straight torsion spring 33;

[0082] The controller 50 simultaneously starts the reverse action of the tone arm drive motor 31 to drive the four-jaw type rotating positioning member 41 and the tone arm assembly to synchronously rotate in the reverse direction through the fourth gear 55 and the fifth gear 56 and the tone arm driven positioning gear 35 matched and meshed with each other, and the record playing end positioning contact block 40 of the four-jaw type rotating positioning member 41 starts to move away from the record playing end sensing switch 45 of the rotating positioning circuit board 62, and the tone arm shaft 4 and the U-shaped tone arm seat 59, together with the tone arm 3 lifted by the top horizontal rod part 5-1 of the lifting rod 5, are reversely rotated to the tone arm cradle 68 of the stop placing position 64, and the stop placing positioning contact block 37 of the four-jaw type rotating positioning member 41 approaches the stop placing sensing switch 44 of the rotating positioning circuit board 62;

[0083] (11) When the tone arm 3 lifted by the top horizontal rod part 5-1, together with the U-shaped tone arm seat 59 and the tone arm shaft 4, is rotated to above the tone arm cradle 68 of the stop placing position 64, that is, the stop placing positioning contact block 37 of the four-jaw type rotating positioning member 41 reaches and triggers the stop placing sensing switch 44 of the rotating positioning circuit board 62, the controller 50 receives the signal to stop the tone arm drive motor 31 from acting;

[0084] The controller 50 simultaneously starts the reverse action of the translational push-pull drive motor 28 to drive the translational push-pull member 10 to reversely translate and pull away from the swing gear assembly 9 through the third gear 52 and the second rack part 10-2 matched and meshed with each other, and the second positioning contact block 10-3 of the translational push-pull member 10 also moves away from the push-to-end position sensing switch 20 of the translational positioning circuit board 6-2 and translates to the direction of the pull-to-end position sensing switch 19 along with the reverse translation of the entire translational push-pull member 10;

[0085] With the reverse pulling away of the translational push-pull member 10 from the swing gear assembly 9, the pulling force of the translational push-pull device 7 on the swing gear assembly 9 is enhanced and greater than the deformation restoring force of the straight torsion spring 33 through the structure that the convex clamping hook part 10-4 of the translational push-pull member 10 is matched and clamped with the advancing and retreating buckle block 57 of the swing gear assembly 9, and the swing gear assembly 9 is swung away from the driven rotating assembly 12 around the swing shaft bolt 58, and the fifth gear 56 and the tone arm driven positioning gear 35 are disengaged from the meshed state;

[0086] (12) When the second positioning contact block 10-3 of the translation push-pull component 10 reversely translates to reach and trigger the pull-to-position sensing switch 19, the controller 50 receives the signal to stop the translation push-pull drive motor 28 from operating, the reverse translation of the translation push-pull component 10 to the swing toothed assembly 9 reaches the maximum distance, and the swing toothed assembly 9 swings around the swing shaft bolt 58 to separate from the rear swing of the driven rotating assembly 12 also reaches the maximum distance;

[0087] The controller 50 simultaneously starts the reverse operation of the lifting drive motor 21 to drive the translation lifting component 63 to reversely translate through the inter-matching toothed transmission of the first gear 25 and the second gear 26 with the first rack portion 63-2, the first positioning contact block 63-3 of the translation lifting component 63 also separates from the lift-to-position sensing switch 17 of the lifting positioning circuit board 6-1 and translates to the direction of the drop-to-position sensing switch 18 along with the reverse translation of the entire translation lifting component 63, and the upper surface slope of the lifting slide 63-4 of the translation lifting component 63 will make the entire lifting lever 5 drop during the reverse translation, and the tone arm will drop in the vertical direction along with the drop of the top horizontal lever portion 5-1;

[0088] (13) When the first positioning contact block 63-3 of the translation lifting component 63 reversely translates to reach and trigger the drop-to-position sensing switch 18, the controller 50 receives the signal to stop the lifting drive motor 21 from operating, the lifting lever 5 is in contact with the lowest point of the upper surface slope of the lifting slide 63-4, and the tone arm 3 also drops along with the drop of the top horizontal lever portion 5-1 to the tone arm cradle 68 of the stop machine swing position 64, and thus the entire electric rotating arm automatic playing program is completed.

[0089] The working process of the manual adjustment function of the present embodiment is as follows:

[0090] (1) Because the tone arm 3 is movably connected with the horizontal shaft 60, the tone arm 3 can independently swing up and down around the horizontal shaft 60, and because the independent auxiliary lifting tone arm mechanism uses the top horizontal lever portion 5-1 of the lifting lever 5 to unidirectionally lift the tone arm 3, instead of using the fixed connection with the tone arm shaft 4 to lift the tone arm shaft 4 and then lift the tone arm 3, manual external force can be applied to the tone arm for artificial and arbitrary lifting operation without affecting or damaging the mechanical structure of the entire record player during the process of lifting or dropping the tone arm 3 by the translation lifting lever device 8 and the lifting lever 5, or during the process of playing a record by the tone arm;

[0091] (2) Because the tonearm assembly and the electric rotating tonearm mechanism adopt a flexible connection type rotating tonearm mechanism, that is, the driven rotating component 12 fixedly connected to the tonearm assembly and the swing meshing component 9 equipped with the tonearm drive motor 31 are meshed with the tonearm driven positioning gear 35 through the fifth gear 56 only during the time when the tonearm 3 needs to be electrically rotated before and after playing the record. During the entire process of the tonearm 3 playing the record, the fifth gear 56 and the tonearm driven positioning gear 35 are in a non-meshing, non-connected state of being separated from each other. Therefore, during the entire process of the tonearm 3 playing the record, manual external force can be used to manually rotate the tonearm 3 at will without affecting or damaging the mechanical structure of the entire record player. At the same time, the moment when the user manually rotates the tonearm to move forward or backward to select songs will only occur during the process of the tonearm 3 playing the record. Example 2

[0092] like Figures 20 to 21 As shown, the electric rotary record player with manual adjustment function provided in this embodiment 2 differs from that in embodiment 1 in that: the convex hook part 10-4 of the translation push-pull device is provided with a hollow cavity 10-4-1, and the cylindrical advance and retreat latch block 57 of the swing engagement assembly 9 is fitted into the hollow cavity 10-4-1 of the convex hook part 10-4; and the straight torsion spring assembly, namely the straight torsion spring 33, the first torsion spring latch 47, and the second torsion spring latch 49, is not used.

[0093] During operation, when the controller 50 starts the translation push-pull drive motor 28 to move forward and drive the translation push-pull component 10 to move forward and approach the swing meshing component 9, the hollow cavity 10-4-1 of the convex hook part 10-4 synchronously matches and drives the advance and retreat latch block 57 together with the swing meshing component 9 to swing forward around the swing shaft bolt 58 towards the driven rotating component 12, so that the fifth gear 56 meshes with the tonearm driven positioning gear 35 of the driven rotating component 12. Then the controller 50 starts the tonearm drive motor 31 to move forward and drives the four-jaw rotating positioning component 41 and the tonearm assembly to rotate synchronously forward through the meshing transmission of the fourth gear 55 and the fifth gear 56 with the driven positioning gear 35.

[0094] When the controller 50 starts the translation push-pull drive motor 28 to reverse the action of driving the translation push-pull component 10 to reverse the translation and pull away the swing engagement assembly 9, the hollow cavity 10-4-1 of the convex hook part 10-4 synchronously matches and drives the advance and retreat latch block 57 together with the swing engagement assembly 9 to swing away from the driven rotating component 12 around the swing shaft bolt 58, so that the fifth gear 56 and the tonearm driven positioning gear 35 are disengaged, thus realizing the flexible connection structure and function between the tonearm assembly and the tonearm drive motor 31.

Claims

1. An electric turntable with manual adjustment function, comprising a base (1), a controller (50), a turntable assembly, and a tonearm assembly, wherein the controller (50), the turntable assembly, and the tonearm assembly are all disposed on the base (1), characterized in that: There are also independent auxiliary lifting arm mechanism and flexible connection type rotating arm mechanism, which are arranged on the machine table (1) and connected with the controller (50); The arm assembly comprises an arm (3), a U-shaped arm seat (59), and an arm shaft (4). The two side walls of the U-shaped arm seat (59) are internally provided with a horizontal shaft (60) penetrating through the rear section of the arm (3) and movably connected with the arm (3), so that the arm (3) can swing up and down around the horizontal shaft (60) under the action of the independent auxiliary lifting arm mechanism or manual external force. The independent auxiliary lifting arm mechanism comprises a lifting rod (5) and a translation lifting device (8). The top horizontal rod part (5-1) arranged on the upper part of the lifting rod (5) is supported below the middle section of the arm (3). The width of the top horizontal rod part (5-1) in the horizontal and vertical direction of the arm (3) is greater than the maximum swing distance of the middle section of the arm (3) from the parking position (64) to the playing end position (67). The lower end of the lifting rod (5) is in contact with the translation lifting device (8), so that the lifting rod (5) can lift the arm (3) according to the action of the translation lifting device (8). The arm shaft (4) extending downward from the U-shaped arm seat (59) penetrates through the arm shaft guide hole (46) at one corner of the machine table (1) and is connected with the flexible connection type rotating arm mechanism, so that the arm (3) can swing left and right around the arm shaft (4) under the action of the flexible connection type rotating arm mechanism or manual external force.

2. The electrically operated turntable record player with manual adjustment function according to claim 1, characterized in that: The flexible connection type rotating arm mechanism comprises a translation pushing and pulling device (7), a swing gear assembly (9), and a driven rotating assembly (12) arranged in sequence. The translation pushing and pulling device (7) comprises a translation pushing and pulling member (10), a translation pushing and pulling driving motor (28), a third gear (52), a second linear guide rail group (53), and a translation positioning circuit board (6-2). The translation pushing and pulling driving motor (28), the second linear guide rail group (53), and the translation positioning circuit board (6-2) are fixedly arranged on the machine table (1). The translation pushing and pulling member (10) is composed of a second guide rail slider part (10-1), a second rack part (10-2), a second positioning contact block (10-3), and a protruding hook part (10-4). The second guide rail slider part (10-1) is slidably connected on the second linear guide rail group (53). The third gear (52) driven by the output shaft of the translation pushing and pulling driving motor (28) is in gear engagement with the second rack part (10-2) to drive the translation pushing and pulling member (10) to translate as a whole. The translation positioning circuit board (6-2) is provided with a pull-to-end position sensing switch (19) and a push-to-end position sensing switch (20). The second positioning contact block (10-3) is matched with the pull-to-end position sensing switch (19) or the push-to-end position sensing switch (20). The protruding hook part (10-4) is movably connected with the swing gear assembly (9). The swing gear assembly (9) comprises a swing shaft bolt (58), a swing base (34), a tone arm drive motor (31), a fourth gear (55), a fifth gear (56), and a reciprocating buckle block (57). The reciprocating buckle block (57) is arranged on the first end corner (34-1) of the swing base (34) close to the translation push-pull device (7) and is matched with the convex buckle hook part (10-4) of the translation push-pull device to be detachably connected. The tone arm drive motor (31) is arranged on the swing base (34). The fourth gear (55) driven by the output shaft of the tone arm drive motor (31) is matched with the fifth gear (56). The fifth gear (56) is arranged on the second end corner (34-2) of the swing base (34) closest to the driven rotating assembly (12). The outer side part of the tooth pattern of the fifth gear (56) is exposed outside the outer periphery of the swing base (34). The swing gear assembly (9) is movably connected with the machine table (1) through the swing shaft bolt (58) arranged on the third end corner (34-3) of the swing base (34) closest to the driven rotating assembly (12), so that the swing gear assembly (9) swings forward and engages with the driven rotating assembly (12) or swings backward and separates from the driven rotating assembly (12) around the swing shaft bolt (58) when the swing gear assembly (9) is subjected to the pushing force or the pulling force of the translation push-pull device (7). The driven rotating assembly (12) comprises a tone arm driven positioning gear (35), a four-jaw rotating positioning member (41) and a rotating positioning circuit board (62). The fifth gear (56) of the tone arm driven positioning gear (35) is matched and engaged with the fifth gear (56) of the swing gear engaging assembly (9) in the front swing engaging state. The four-jaw rotating positioning member (41) is provided with a tone arm shaft buckle hole (36) matched with the buckle (48) of the end part of the tone arm shaft (4). The tone arm shaft (4) sequentially passes through the tone arm shaft guide hole (46) of the machine table (1), the center hole of the tone arm driven positioning gear (35) and the tone arm shaft buckle hole (36), so as to be fixedly connected with the tone arm driven positioning gear (35) and the four-jaw rotating positioning member (41). The four-jaw rotating positioning member (41) is outwardly provided with a stop swing positioning touch block (37), a twelve-inch record starting positioning touch block (38), a seven-inch record starting positioning touch block (39) and a record playing end positioning touch block (40) in turn and in different distances from the tone arm shaft buckle hole (36). The rotating positioning circuit board (62) is fixedly arranged on the machine table (1) at a position matched with the four-jaw rotating positioning member (41). The rotating positioning circuit board (62) is outwardly provided with a stop swing sensing switch (44), a twelve-inch record starting sensing switch (43), a seven-inch record starting sensing switch (42) and a record playing end sensing switch (45) in turn and in different distances from the tone arm shaft buckle hole (36). The distance between the stop swing positioning touch block (37), the twelve-inch record starting positioning touch block (38), the seven-inch record starting positioning touch block (39) and the record playing end positioning touch block (40) is greater than the distance between the stop swing sensing switch (44), the twelve-inch record starting sensing switch (43), the seven-inch record starting sensing switch (42) and the record playing end sensing switch (45), so that at most one of the positioning touch blocks of the four-jaw rotating positioning member (41) can contact the matched sensing switch on the rotating positioning circuit board (62) at any time. The distance between the push-to-end sensing switch (20) and the pull-to-end sensing switch (19) is matched with the maximum distance between the swing gear engaging assembly (9) and the driven rotating assembly (12) and the length of the second rack part (10-2).

3. The electrically operated turntable record player with manual adjustment function according to claim 1, characterized in that: The translation lifting lifting rod device (8) includes a translation lifting component (63), a translation lifting drive motor (21), a first gear (25), a second gear (26), a first linear guide rail group (24), a lifting positioning circuit board (6-1), the translation lifting component (63) is composed of a first guide rail slider part (63-1), a first rack part (63-2), a first positioning contact block (63-3), and a lifting sliding table (63-4), the translation lifting drive motor (21), the first linear guide rail group (24), the lifting positioning circuit board (6-1), and the second gear (26) are fixedly arranged on the machine table (1), the lifting positioning circuit board (6-1) is provided with a lifting position sensing switch (17) and a lowering position sensing switch (18), the first gear (25) driven by the output shaft of the translation lifting drive motor (21) is matched with the second gear (26), the second gear (26) is matched with the first rack part (63-2) to drive the translation lifting component (63) to translate integrally, the first guide rail slider part (63-1) is matched and fitted on the first linear guide rail group (24) to be connected slidingly, the first positioning contact block (63-3) is matched and applied to the lifting position sensing switch (17) or the lowering position sensing switch (18), and the upper surface of the lifting sliding table (63-4) is a slope; The distance between the lifting position sensing switch (17) and the lowering position sensing switch (18), the length of the lifting sliding table (63-4), and the length of the first rack part (63-2) are matched with each other.

4. The electrically operated turntable record player with manual adjustment function according to claim 1, characterized in that: The lifting rod (5) sequentially includes a top cross rod part (5-1), a vertical rod cover part (5-2), a vertical rod (5-3), and a contact sliding part (5-4) which are fixedly connected with each other from top to bottom, the lifting rod (5) is further provided with a reset spring (5-5) which is matched and embedded in the outer periphery of the vertical rod (5-3), the lifting rod (5) is further provided with a lifting rod guide hole snap ring (5-6), the outer peripheral wall of the lifting rod guide hole snap ring (5-6) is matched and fitted in the lifting rod guide hole (13) of the machine table (1), and the inner peripheral wall of the lifting rod guide hole snap ring (5-6) is matched and embedded in the outer peripheral wall of the lower segment of the vertical rod (5-3), the reset spring (5-5) is fixedly connected with the lower surface of the vertical rod cover part (5-2) and the upper surface of the lifting rod guide hole snap ring (5-6) respectively, and the contact sliding part (5-4) is in contact with the upper surface of the lifting sliding table (63-4) of the translation lifting component (63).

5. The electrically operated turntable record player with manual adjustment function according to claim 2, characterized in that: There is also a straight torsion spring assembly, which comprises a straight torsion spring (33), a first torsion spring buckle (47) and a second torsion spring buckle (49). The first torsion spring buckle (47) is fixedly arranged on the second end corner (34-2) of the swing base (34) closest to the driven rotating assembly (12), and the second torsion spring buckle (49) is fixedly arranged on the lower surface of the machine table (1). The two ends of the straight torsion spring (33) are respectively fixedly arranged in the first torsion spring buckle (47) and the second torsion spring buckle (49). The middle part of the straight torsion spring (33) is wound around the swing shaft bolt (58) on the side close to the outer periphery of the driven rotating assembly (12), so that the whole straight torsion spring (33) is bent to form an obtuse angle broken line shape towards the driven rotating assembly (12), so that the swing gear assembly (9) is swung in engagement with the forward swing of the driven rotating assembly (12) under the restoring force of the deformation of the straight torsion spring (33).

6. The electrically operated turntable record player with manual adjustment function according to claim 1, characterized in that: The turntable assembly comprises a turntable (2) and a turntable rotating motor (11). The output shaft of the turntable rotating motor (11) passes through the turntable guide hole in the center of the machine table and is connected with the turntable (2) to drive the turntable (2) to rotate.

7. The electrically operated turntable record player with manual adjustment function according to claim 1, characterized in that: The turntable assembly and the lifting rod (5) are arranged on the upper surface of the machine table (1), and the controller (50), the flexible connection type rotating arm mechanism and the translational lifting rod device are arranged on the lower surface of the machine table (1).

8. The electrically operated turntable record player with manual adjustment function according to claim 1, characterized in that: The machine table (1) is also provided with a key module (15) connected with the controller (50).

9. The electrically operated turntable record player with manual adjustment function according to claim 3, characterized in that: The lifting positioning circuit board (6-1) and the translational positioning circuit board (6-2) are arranged on the same positioning circuit board (6).

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