Mechanism for controlling the movement of the automatic lifting and turning arm of a record player

Abstract

This application discloses a motion mechanism for controlling the automatic lifting and rotating of a record player's tonearm, including a record, a tonearm, and a cartridge connected to the end of the tonearm. It also includes: a base; a lifting plate movably disposed on the base, with a lifting ramp on the lifting plate; a lifting head for pushing against the tonearm; a lifting rod, one end of which is connected to the lifting head, and the other end of which is connected to the lifting ramp; and a mating ramp, with a mating ramp on the end of the lifting rod facing the lifting plate, the mating ramp fitting to the lifting ramp. Driving the lifting plate to move on the base, through the cooperation of the lifting ramp and the mating ramp, during the movement of the lifting plate, the lifting rod is lifted, thereby lifting the lifting head, which in turn lifts the tonearm, thus completing the tonearm lifting action. By providing the mating ramp, the lifting rod can form surface contact with the lifting ramp during the lifting process, increasing the contact area and reducing the possibility of damage to the mating ramp of the lifting rod.

Description

Technical Field

[0001] This application relates to the field of record player control technology, and in particular to a motion mechanism for controlling the automatic lifting and rotating of the record player arm. Background Technology

[0002] A record player works by recording audio information onto a record using mechanical notches. The record's mechanical structure rotates the record, allowing the cartridge to read the audio information, convert it into electrical signals, and then play the music through a speaker. The cartridge is attached to a tonearm, which controls the cartridge.

[0003] The tonearm lifting depends on the lifting head, the lifting rod on the lifting head, the lifting plate, and the lifting ramp on the lifting plate. By pushing the lifting plate, the lifting head can be lifted by the lifting ramp, and the tonearm can be automatically lifted by the lifting head.

[0004] In related technologies, a ball-shaped roller is provided at the end of the lifting rod facing the lifting plate. However, the contact between the ball-shaped roller and the lifting slope is point contact, which makes the ball-shaped roller easily damaged under pressure, affecting the service life of the lifting rod.

[0005] Therefore, it is necessary to propose a motion mechanism for controlling the automatic lifting and rotating arm of the record player, and to extend the service life of the lifting rod, which has become an important technical problem that urgently needs to be solved. Utility Model Content

[0006] This application provides a motion mechanism for controlling the automatic lifting and rotating of the record player's arm, aiming to solve the problem in the prior art where the lifting rod has a ball-shaped roller at one end facing the lifting plate, but the contact between the ball-shaped roller and the lifting inclined surface is point contact, which makes the ball-shaped roller easily damaged under pressure, affecting the service life of the lifting rod.

[0007] To achieve the above objectives, this application proposes a motion mechanism for controlling the automatic lifting and rotating of the tonearm of a record player, including a record, a tonearm, and a cartridge connected to the end of the tonearm, and further including: a base; a lifting plate, which is movably disposed on the base and has a lifting ramp; a lifting head, which is used to push against the tonearm; a lifting rod, one end of which is connected to the lifting head and the other end of which is connected to the lifting ramp; and a mating ramp, which is provided at the end of the lifting rod facing the lifting plate and is adapted to the lifting ramp.

[0008] In some embodiments, the device further includes: a sealing groove disposed on the lifting plate, the lifting ramp being located at the bottom end of the sealing groove, and the mating ramp of the lifting rod being located within the sealing groove; and lubricant disposed within the sealing groove.

[0009] In some embodiments, the device further includes: a lifting drive, which is disposed on the base and connected to a lifting plate; a guide post, which is disposed on the lifting head; and a guide hole, which is provided on the base to accommodate the guide post.

[0010] In some embodiments, the device further includes: a first rotating shaft rotatably disposed on a base; a connecting plate disposed at the end of the first rotating shaft; a second rotating shaft rotatably disposed on the connecting plate and connected to a tonearm; and a drive structure for driving the first rotating shaft to rotate.

[0011] In some embodiments, the drive structure includes: a worm gear box disposed on a base; a rotation drive disposed on the worm gear box; a worm connected to the rotation drive; and a worm wheel rotatably disposed in the worm gear box, the worm wheel meshing with the worm and connected to a first rotating shaft.

[0012] In some embodiments, the system further includes: guide protrusions, with guide protrusions provided on both sides of the lifting plate; two guide members, which are disposed in the worm gear box; and a guide groove, which is disposed on the side of the guide member facing the guide protrusions.

[0013] This application proposes a motion mechanism for controlling the automatic lifting and rotating of the tonearm in a record player. The mechanism includes a record, a tonearm, and a cartridge connected to the end of the tonearm. It also includes: a base; a lifting plate movably mounted on the base, with a lifting ramp on the lifting plate; a lifting head for pushing against the tonearm; a lifting rod, one end of which is connected to the lifting head, and the other end of which is connected to the lifting ramp; and a mating ramp, with a mating ramp on the end of the lifting rod facing the lifting plate, which is adapted to the lifting ramp. When the record player needs to lift the tonearm, it drives the lifting plate to move on the base. Through the cooperation of the lifting ramp and the mating ramp, the lifting rod is lifted during the movement of the lifting plate, thereby lifting the lifting head, which in turn lifts the tonearm, thus completing the tonearm lifting action. By setting the mating ramp, the lifting rod can form surface contact with the lifting ramp during the lifting process, increasing the contact area and reducing the possibility of damage to the mating ramp of the lifting rod. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0015] Figure 1 This is a schematic diagram of a motion mechanism for controlling the automatic lifting and rotating arm of a record player in one embodiment of this application;

[0016] Figure 2 This is a cross-sectional view of a motion mechanism for controlling the automatic lifting and rotating arm of a record player according to an embodiment of this application;

[0017] Figure 3 This is a schematic diagram of the lifting arm structure and the driving rotation structure from one perspective in one embodiment of this application;

[0018] Figure 4 for Figure 3 Enlarged view of part A in the middle;

[0019] Figure 5 This is a schematic diagram of the lifting arm structure and the driving rotation structure from another perspective in one embodiment of this application;

[0020] Figure 6 This is a schematic diagram of the drive structure in one embodiment of this application;

[0021] Figure 7 This is a schematic diagram of the internal structure of the drive structure in one embodiment of this application.

[0022] In the diagram: 1. Record; 2. Tonearm; 21. Amplifier; 3. Cartridge; 4. Second counterweight; 5. First counterweight; 6. First shaft; 71. Worm gearbox; 72. Worm gear; 73. Top ring; 74. Second transmission wall; 75. Second spring; 76. Bottom ring; 77. Rotating component; 77. First transmission wall; 771. Square locking hole; 772. First spring; 78. Rotation drive; 79. Worm; 710. First inclined slider; 711. Second inclined slider; 712. Vertical transmission wall; 713. Pressure block; 714. Lifting drive; 81. Screw; 82. Lifting head; 83. Lifting plate; 84. Clearance hole; 85. Guide protrusion; 86. Guide component; 87. Guide groove; 871. Guide rod; 88. Closed groove; 89. Lifting inclined surface; 810. Lifting rod; 811. Base; 9. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0024] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0025] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0026] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0027] See Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, this application proposes a motion mechanism for controlling the automatic lifting and rotating of the tonearm of a record player, including a record 1, a tonearm 2, and a cartridge 3 connected to the end of the tonearm 2, and further including: a base 9; a lifting plate 84, which is movably disposed on the base 9, and a lifting ramp 810 is provided on the lifting plate 84; a lifting head 83, which is used to push the tonearm 2; a lifting rod 811, one end of which is connected to the lifting head 83, and the other end of which is connected to the lifting ramp 810; and a mating ramp, which is provided at the end of the lifting rod 811 facing the lifting plate 84, and the mating ramp is adapted to the lifting ramp 810.

[0028] The base 9 is the structural foundation for the motion mechanism that controls the automatic lifting and rotating arm of the record player. Other structures on the motion mechanism that controls the automatic lifting and rotating arm of the record player are directly or indirectly connected to the base 9.

[0029] Among them, the lifting plate 84, the lifting head 83, the lifting rod 811 and the lifting ramp 810 on the lifting plate 84 are the main structures of the lifting arm structure. The lifting plate 84 moves on the base 9, forcing the lifting ramp 810 to lift the lifting rod 811, which in turn drives the lifting head 83 to lift the tonearm 2, thereby realizing the lifting action of the tonearm 2.

[0030] In this embodiment, the tonearm 2 is provided with an enlargement part 21. The lifting head 83 drives the tonearm 2 to lift by lifting the enlargement part 21. The enlargement part 21 helps to increase the contact area between the lifting head 83 and the enlargement part 21, thereby improving the stability of the lifting structure.

[0031] Among them, the mating inclined surface at one end of the lifting rod 811 is the core structure of the lifting arm structure. The slope of the mating inclined surface is adapted to the lifting inclined surface 810, so that when the lifting inclined surface 810 lifts the lifting rod 811, the lifting rod 811 can form a surface contact with the lifting inclined surface 810, increasing the contact area and thus reducing the possibility of damage to the mating inclined surface of the lifting rod 811.

[0032] Specifically, when the record player 1 needs to lift the tonearm 2, the lifting plate 84 is driven to move on the base 9. Through the cooperation of the lifting ramp 810 and the mating ramp, the lifting plate 84 will push up the lifting rod 811 during its movement, thereby lifting the lifting head 83. The lifting head 83 will then lift the tonearm 2, thus completing the tonearm lifting action. By setting the mating ramp, the lifting rod 811 can form surface contact with the lifting ramp 810 during the lifting process, increasing the contact area and reducing the possibility of damage to the mating ramp of the lifting rod 811.

[0033] See Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, in some embodiments, the system further includes: a closed groove 89 disposed on the lifting plate 84, a lifting ramp 810 located at the bottom end of the closed groove 89, and a mating ramp of the lifting rod 811 located within the closed groove 89; the lifting rod 811 is partially located within the closed groove 89, and the mating ramp abuts against the lifting ramp 810 at the bottom end of the closed groove 89; and lubricant, which is disposed within the closed groove 89. The lubricant is stored within the closed groove 89. When the lifting rod 811 is in its initial state, the mating ramp is located at the bottom of the lifting ramp 810, and is covered by the lubricant. During lifting, the mating ramp gradually moves out of the area containing the lubricant, and returns to the lubricant after lifting. The lubricant significantly reduces the friction between the mating ramp and the lifting ramp 810, and helps reduce frictional damage to the mating ramp or the lifting ramp 810, increasing the service life of the lifting arm structure. The lubricant is preferably lubricating oil.

[0034] See Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, in some embodiments, the system further includes: a lifting drive 81, which is disposed on the base 9 and connected to the lifting plate 84; the lifting drive 81 is used to drive the lifting plate 84 to move, thereby lifting the lifting rod 811 and completing the lifting arm action. A guide post is provided on the lifting head 83; a guide hole is provided on the base 9 to accommodate the guide post. The stability of the movement of the lifting head 83 is improved by the cooperation of the guide post and the guide hole.

[0035] In this embodiment, the lifting drive 81 is a motor, which is mounted on a first motor mounting base. The first motor mounting base is connected to the base 9 by screws 82. The output end of the lifting drive 81 is connected to a screw via a coupling. The lifting plate 84 is provided with a threaded hole adapted to the lifting plate 84. The lifting drive 81 drives the screw to rotate, thereby driving the lifting plate 84 to reciprocate.

[0036] See Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 7 As shown, in some embodiments, it further includes: a first rotating shaft 6, rotatably mounted on the base 9; a lifting plate 84 with a clearance hole 85 for avoiding the first rotating shaft 6; the first rotating shaft 6 for driving the tonearm 2 to rotate; a connecting plate, with a connecting plate at the end of the first rotating shaft 6; the connecting plate is the structural basis of the second rotating shaft, preferably two connecting plates are provided, and the two connecting plates are spaced apart; a second rotating shaft, rotatably mounted on the connecting plate, the second rotating shaft connecting the tonearm 2; the axis of the second rotating shaft is perpendicular to the first rotating shaft 6, the second rotating shaft allowing the tonearm 2 to rotate with the end of the first rotating shaft 6 as a fulcrum, thereby completing the lifting action of the tonearm 2. A drive structure, used to drive the first rotating shaft 6 to rotate. The drive structure is used to complete the rotation action of the tonearm 2.

[0037] See Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 7 As shown, in some embodiments, the drive structure includes: a worm gear box 71, which is disposed on the base 9; a rotation drive 79, which is disposed on the worm gear box 71; the rotation drive 79 is a motor, and a second motor mounting base is disposed outside the rotation drive 79, which is mounted on the worm gear box 71; a worm 710, which is connected to the rotation drive 79; the output end of the rotation drive 79 is connected to the worm 710 through a coupling, thereby driving the worm 710 to rotate; and a worm wheel 72, which is rotatably disposed inside the worm gear box 71, meshing with the worm 710, and connected to the first rotating shaft 6. Through the meshing of the worm 710 and the worm wheel 72, the rotation of the worm 710 can drive the worm wheel 72 to rotate, thereby driving the tonearm 2 to rotate, completing the tonearm rotation action of the tonearm 2.

[0038] The lead angle of the worm 710 is greater than the equivalent friction angle to prevent self-locking between the worm 710 and the worm wheel 72.

[0039] Preferably, the worm gear box 71 is provided with a first inclined slider 711, and the lifting plate 84 is provided with a second inclined slider 712. The second inclined slider 712 is adapted to the first inclined slider 711. The worm gear box 71 is movably mounted on the base 9. The worm gear box 71 is provided with a sliding column, and the base 9 is provided with a matching sliding column hole. A first spring 78 is sleeved on the sliding column. One end of the first spring 78 is connected to the worm gear box 71, and the other end of the first spring 78 is connected to the base 9. During the movement of the lifting plate 84, the second inclined slider 712 will force the first inclined slider 711 to move downward, thereby forcing the worm gear box 71, the rotation drive 79, the worm gear 72, and the worm 710 to move downward as a whole.

[0040] A rotating component 77 is rotatably mounted on the base 9. The rotating component 77 is provided with a square locking hole 772. The first rotating shaft 6 is provided with a square part adapted to the square locking hole 772. A portion of the first rotating shaft 6 extends out of the rotating component 77. The portion of the first rotating shaft 6 extending out of the rotating component 77 is provided with a thread. A locking nut is screwed onto the portion of the first rotating shaft 6 extending out of the rotating component 77. The locking nut abuts against the rotating component 77. Preferably, a washer is provided between the locking nut and the rotating component 77. A first transmission wall 771 is provided on the rotating component 77, a bottom ring 76 is provided on the rotating component 77, a second spring 75 is provided on the bottom ring 76, and a top ring 73 is provided at the other end of the second spring 75. A second transmission wall 74 adapted to the first transmission wall 771 is provided on the top ring 73. A vertical transmission wall 713 is provided on the inner side of the worm gear 72. Both the top ring 73 and the bottom ring 76 are provided with transmission grooves adapted to the vertical transmission wall 713. The top ring 73 and the bottom ring 76 rotate with the worm gear 72. A pressure block 714 is also provided on the worm gear 72. When the worm gear box 71 moves down, it drives the worm gear 72 to move down, thereby driving the pressure block 714 to press the top ring 73 down, so that the second transmission wall 74 on the top ring 73 fits against the first transmission wall 771, and the power on the top ring 73 is transmitted to the rotating component 77, thereby driving the first rotating shaft 6 to rotate, completing the arm rotation action. The arm rotation is only performed after the arm is raised to avoid damage to the cartridge 3.

[0041] See Figure 1 , Figure 3 , Figure 5 and Figure 6 As shown, in some embodiments, the system further includes: guide protrusions 86, with guide protrusions 86 provided on both sides of the lifting plate 84; two guide members 87, which are disposed on the worm gear box 71; and a guide groove 871, which is disposed on the side of the guide member 87 facing the guide protrusions 86. The movement direction of the lifting plate 84 is restricted by the cooperation between the guide protrusions 86 and the guide groove 871. The width of the guide groove 871 is much larger than the thickness of the guide protrusions 86, so that the guide protrusions 86 can still cooperate with the guide groove 871 when the worm gear box 71 moves downward.

[0042] In this embodiment, a first counterweight 5 is provided at one end of the tonearm 2, and a second counterweight 4 is attached to the tonearm 2. The downforce of the cartridge 3 is adjusted by the first counterweight 5 and the second counterweight 4.

[0043] The above description is only a part or preferred embodiment of this application. Neither the text nor the drawings should limit the scope of protection of this application. All equivalent structural transformations made using the content of this application's specification and drawings under the overall concept of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.

Claims

1. A motion mechanism for controlling the automatic lifting and rotating of the tonearm of a record player, comprising a record (1), a tonearm (2), and a cartridge (3) connected to the end of the tonearm (2), characterized in that, Also includes: Base (9); A lifting plate (84) is movably disposed on the base (9), and a lifting ramp (810) is provided on the lifting plate (84). Lifting head (83), the lifting head (83) is used to push against the tonearm (2); A lifting rod (811) is provided, one end of which is connected to the lifting head (83), and the other end of which is connected to the lifting ramp (810). The inclined surface is provided at one end of the lifting rod (811) facing the lifting plate (84), and the inclined surface is adapted to the lifting inclined surface (810).

2. The motion mechanism for controlling the automatic lifting and rotating arm of a record player according to claim 1, characterized in that, Also includes: A closed groove (89) is provided on the lifting plate (84), the lifting inclined surface (810) is located at the bottom end of the closed groove (89), and the mating inclined surface of the lifting rod (811) is located inside the closed groove (89); Lubricating fluid is provided in the closed tank (89).

3. The motion mechanism for controlling the automatic lifting and rotating arm of a record player according to claim 1, characterized in that, Also includes: A lifting drive (81) is disposed on the base (9) and connected to the lifting plate (84). The guide post is provided on the lifting head (83); The base (9) has a guide hole adapted to the guide post.

4. The motion mechanism for controlling the automatic lifting and rotating arm of a record player according to claim 1, characterized in that, Also includes: The first rotating shaft (6) is rotatably disposed on the base (9). A connecting plate is provided at the end of the first rotating shaft (6); The second rotating shaft is rotatably disposed on the connecting plate and is connected to the tonearm (2). A drive structure is provided for driving the first rotating shaft (6) to rotate.

5. The motion mechanism for controlling the automatic lifting and rotating arm of a record player according to claim 4, characterized in that, The driving structure includes: Worm gearbox (71), which is disposed on the base (9); Rotation drive (79), the rotation drive (79) is disposed in the worm gear box (71); Worm (710), the worm (710) is connected to the rotation drive (79); The worm wheel (72) is rotatably disposed in the worm wheel box (71), the worm wheel (72) meshes with the worm (710), and the worm wheel (72) is connected to the first rotating shaft (6).

6. The motion mechanism for controlling the automatic lifting and rotating arm of a record player according to claim 5, characterized in that, Also includes: Guide protrusions (86) are provided on both sides of the lifting plate (84). Two guide members (87) are disposed in the worm gear box (71). Guide groove (871), the guide groove (871) is disposed on the side of the guide member (87) facing the guide protrusion (86).

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