Electric dust-proof device

A dust-proof device, electric technology, applied in projection devices, pollution prevention methods, optics, etc., can solve the problems of increased manufacturing costs, inconvenient assembly of the electric dust-proof device 1, increased volume of the electric dust-proof device 1, etc.

Inactive Publication Date: 2009-09-16
ASIA OPTICAL CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The number of the gears 122, 123, 124, 125, 126, 128 that cooperate to transmit power and increase torque between the motor 121 and the dust-proof blade 11 is relatively large. The volume of the electric dustproof device 1 is also relatively increased, and the manufacturing cost is increased due to more parts required, so that the electric dustproof device 1 has the disadvantages of inconvenient assembly, space occupation, and cost waste

Method used

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Experimental program
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Embodiment Construction

[0036] The aforementioned and other technical content, features and effects of the electric dustproof device of the present invention will be clearly understood in the following detailed description of a preferred embodiment with accompanying drawings.

[0037] refer to image 3 , Figure 4A preferred embodiment of the electric dustproof device 2 of the present invention includes a base unit 3, a drive mechanism 4 mounted on the base unit 3, a dustproof blade 5 driven by the drive mechanism 4, and A position sensing unit 6 controlling the driving mechanism 4 .

[0038] The base unit 3 includes a main base body 31 and a cover plate 32, the main base body 31 has a front wall 311, a rear wall 312 arranged in parallel and at intervals, and a front wall connected to the front and rear walls. The middle partition wall 313 in the middle section of the walls 311, 312, the front, rear, and middle partition walls 311, 312, 313 cooperate to define a first chamber 314 and a second chamb...

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PUM

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Abstract

The invention relates to an electric dustproof apparatus, which contain a base unit, a driving mechanism installed at the base and dustproof vanes driven by the driving mechanism. The driving mechanism includes a power unit transmission unit driven by the power unit, a main drive seat driven by the transmission unit and a driven drive seat driven and pushed by the active drive seat; and the dustproof vanes are driven by the driven drive seat. The dynamic force of the power unit is transferred to the dustproof vanes through the transmission unit and the main and driven drive seats, and drives the dustproof vanes to move between an open position and an off-position, which allows the invention to be able to achieve the same function even if assembling components are cut short, and to have advantage of convenient assembling, smaller required space and lower manufacturing costs.

Description

【Technical field】 [0001] The invention relates to an electric device, in particular to an electric dust-proof device suitable for imaging devices such as cameras, video cameras, or projectors to protect their lenses. 【Background technique】 [0002] refer to figure 1 and figure 2 , an electric dust-proof device 1 in US Pat. No. 5,461,441 is mounted on a camera casing 10 to protect a lens 100 of the camera, has a dust-proof blade 11 movably covered on the lens 100, and A driving unit 12 drives the dust-proof blade 11 to move relative to the lens 100 between an open position and a closed position. [0003] The drive unit 12 has a motor 120, a power gear 121 coaxial with the motor 120 and bidirectionally driven by it, a first gear 122, a second gear 123, and a third gear 124 meshed in sequence , a fourth gear 125, a fifth gear 126, a gear bar 127 pushed by the fifth gear 126 to move, and a first gear bar 127 meshed with the gear bar 127 and connected to the dustproof blade 1...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B17/04G03B21/14B08B17/00
Inventor 蔡耀庆颜荣俊黄建龙
Owner ASIA OPTICAL CO INC
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