Drive device for record player and control method thereof

A technology of a driving device and a control method, applied in the field of record players, can solve the problems of delayed return arm, difficulty in guaranteeing the movement accuracy of return arm, dislocation of electromagnets, etc., so as to reduce the damage of assembly relationship, control the return arm accurately and reliably, and ensure quality and performance effects

Inactive Publication Date: 2010-09-08
陈承训
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the arm return device of this patent uses an electromagnet. In order to ensure reliable suction, the installation distance between the electromagnet, the ratchet and the gear has certain requirements, and the electromagnet needs to be reliably positioned at the position required by the design. , has high requirements for installation. If the product needs to be transported for a long distance, the electromagnet will easily be dislocated during the transportation process, which will affect the normal use of the record player; Discharge, and then the electromagnetic attraction generated by the electromagnet will attract ...

Method used

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  • Drive device for record player and control method thereof
  • Drive device for record player and control method thereof
  • Drive device for record player and control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Embodiment one, such as Figure 1 to Figure 15 Shown:

[0063] The record player of the first embodiment includes a base 1, a turntable 2, a first motor 3, a second motor 4, a tone arm mechanism 5, a first switch 32, a second switch 42, a lifting handle 9, a lifting frame 6, a support wheel and transmission mechanism, in the first embodiment, the second switch 42, the second motor 4, the bracket wheel and the transmission mechanism form an automatic arm return device. Considering the stability of the turntable rotation, the rotation of the turntable 2 is driven by a belt Specifically, the turntable 2 is rotatably connected to the base 1, the bottom of the turntable 2 has an annular boss 21, the first motor 3 has a first motor shaft 31, and the gap between the first motor shaft 31 and the annular boss 21 is The belt 33 is tensioned and the transmission is realized. When the first motor 3 starts, the first motor shaft 31 is transmitted through the belt 33 to drive the tu...

Embodiment 2

[0076] Embodiment two, such as Figure 16 ~ Figure 24 Shown:

[0077] The difference between the second embodiment and the first embodiment lies in the transmission device, and this embodiment also makes corresponding improvements to the structure of the bracket wheel and the swing member, so that the tone arm is more stable and reliable during the retraction process.

[0078] The oscillating member in this embodiment is a V-shaped shift fork 54', and the shift fork 54' includes a first fork 541' and a second fork 542', wherein the first fork 541' has a function capable of controlling the second fork. The first catch 540' of a switch 32' on and off, the second fork 542' has an arc-shaped surface, and the shift fork 54' is also provided with a switch on one side of the second fork 542' that can control the second switch 42' to turn on and off. Broken second blocking piece 543'.

[0079] The support wheel of this embodiment is a hub-shaped turntable 7', and the top of the turn...

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PUM

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Abstract

The invention discloses a drive device for a record player. The device comprises a disc record, a first motor, a tone arm and an arm retraction device and is characterized in that: the arm retraction device comprises a second motor, a swinging piece, a lifting rack, a bracket wheel and a driving mechanism, wherein when a second switch is in a closed state, the second motor starts and turns on a time delay circuit; when the second switch is open and the time delay circuit is in an off state, the second motor stops rotating; the swinging piece is in linkage with the tone arm; when the tone arm is in a retracted state, a first switch and the second switch are open; when the tone arm is in a disc record working state, the first switch is closed; the tone arm is in a disc record ending state, the second switch is closed; the input end of the driving mechanism is connected with the shaft of the second motor; and the output end of the driving mechanism is connected with a rotating shaft of the bracket wheel. Compared with the prior art, the driving device of the invention drives the tone arm to automatically retract by driving the driving mechanism by using the second motor so that the overall structure is more compact; the on/off of the first switch and the second switch is realized by the action of the swinging piece; and the action has short stroke and is triggered in place, so that an action error is avoided and the arm retraction is controlled more accurately and reliably.

Description

technical field [0001] The invention relates to an electric record player, in particular to an electric record player drive device and a control method capable of realizing automatic arm return. Background technique [0002] The record player (also known as the phonograph earlier) is a sound playback device. Its working principle is to reproduce the pressure change of the sound wave as accurately as possible by fluctuating on the plane of the turntable. The needle moves along the groove, and the needle tip moves slightly with the groove fluctuation. The ground vibrates, and this vibration is amplified and dispersed in the air by sending a membrane through a mechanical device. Usually, the record player drives the record to rotate through the rotation of the turntable. The rotation of the turntable includes two driving modes: hand crank and electric drive. The hand drive means that after the record player is fully wound, it can continuously play the front and back sides of a ...

Claims

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Application Information

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IPC IPC(8): G11B3/10
Inventor 陈承训
Owner 陈承训
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