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Driving device capable of switching speed reduction ratio

A technology of transmission device and reduction ratio, which is applied in the direction of transmission device, transmission device control, and components with teeth, etc., which can solve the problems of large space and unfavorable miniaturization of scanning device

Inactive Publication Date: 2008-09-10
AVISION PRECISION IND (SUZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, adding a group of motors or power drives takes up a lot of space in the scanning device, which is not conducive to the miniaturization of the current scanning device

Method used

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  • Driving device capable of switching speed reduction ratio
  • Driving device capable of switching speed reduction ratio
  • Driving device capable of switching speed reduction ratio

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] figure 1 and figure 2 The top schematic diagrams of the transmission device with switchable reduction ratio according to the first embodiment of the present invention in high-speed and low-speed states are respectively shown. image 3 show figure 2 3D schematic diagram of . Figure 4 show figure 2 Schematic diagram of the swing arm. Such as Figure 1 to Figure 4 As shown, the transmission device 10 with switchable reduction ratio of the present embodiment includes a motor 11, a driving gear 13, a swing arm 14, a swing arm gear 16, a first gear set 20, a second gear set 30, a first magnetic assembly 40 and The second magnetic assembly 50 . The motor 11 is fixed on the base 60 and has an output shaft 12 . The driving gear 13 is fixed on the output rotating shaft 12 . The swing arm 14 is pivotally connected to the output shaft 12 via an electromagnetic clutch 15 . The swing arm gear 16 is driven to rotate by the driving gear 13 and is mounted on the swing arm 1...

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PUM

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Abstract

The invention is a switch reduction ratio driver, where a drive gear is fixed on the output rotating shaft of a motor, a rocker arm is hinged on the output rotating shaft by electromagnetic clutch, the rocker arm gear installed on the rocker arm is driven by the drive gear to rotate, the first gear group is driven by the rocker arm gear to rotate as the rocker arm is in the first position, the second gear group is driven by the rocker arm gear to rotate as the rocker arm is in the second position, and the first and second gear groups have different output speeds. Besides, the first magnetic component is used to absorb the rocker arm in the first position and the second magnetic component is used to absorb the rocker arm in the second position. Thus, it can switch the reduction ratios by the actions of the electromagnetic clutch and magnetic components.

Description

technical field [0001] The invention relates to a transmission device with a switchable reduction ratio, in particular to a transmission device which is applied in a scanning device and uses a magnetic component and a planetary gear mechanism to achieve a switchable reduction ratio. Background technique [0002] In a traditional flatbed scanning device, the scanning module is driven by a driving device to move back and forth. Generally, when scanning documents, the scanning module moves relatively slowly, but the scanning module can move back to the original position at a faster speed after scanning, so as to reduce the time spent on the entire scanning process. In addition, as far as the travel of the scanned document is concerned, the moving speeds of the scanning modules required for high-resolution scanning and low-resolution scanning are also different. Therefore, the driving device preferably has the function of changing speed. [0003] In the conventional paper-fed ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H37/12F16H59/56F16H61/00G06K9/20
Inventor 陈幸弘
Owner AVISION PRECISION IND (SUZHOU) CO LTD
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