Focusing device and a telescopic tube module thereof
OwnerChun-Hao Cheninventor
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Abstract
A focusing device and a telescopic tube module thereof are for use with optical equipment. The focusing device has a base module and a telescopic tube module. The base module has a housing, a shaft, and at least two bearings. The telescopic tube module has a tubular body, a bottom reinforced member, and an upper reinforced member. The bottom reinforced member is a reinforced board. The upper reinforced member includes at least two reinforced strips. The tubular body is slidably disposed in the housing. The shaft supports the bottom reinforced member. The at least two bearings support the upper reinforced member. When the shaft drives the tubular body to move, the stability and the precision of the focusing device are improved, and the durability of the tubular body is improved.
Claims20
A focusing device comprising:
- a base module including a housing, a shaft, and at least two bearings, the housing having an inner surface and a passageway formed in the inner surface, the shaft being pivotally disposed in a bottom portion of the housing and perpendicular to a longitudinal axial direction of the passageway, the shaft having a part located in the passageway, and the at least two bearings being respectively disposed on an upper-left portion and an upper-right portion of the inner surface of the housing;
- and
- a telescopic tube module including a tubular body, a bottom reinforced member, and an upper reinforced member, the bottom reinforced member being disposed on a bottom portion of an outer surface of the tubular body and extending along a longitudinal axial direction of the tubular body, the upper reinforced member being disposed on an upper-left portion and an upper-right portion of the outer surface of the tubular body, the upper reinforced member forming at least two rails respectively located on the upper-left portion and the upper-right portion of the outer surface of the tubular body and extending along the longitudinal axial direction of the tubular body;
- wherein
- the tubular body is slidably disposed in the passageway along the longitudinal axial direction thereof, the shaft supports the bottom reinforced member, and the at least two bearings respectively support the at least two rails of the upper reinforced member.
A telescopic tube module of a focusing device, comprising:
- a tubular body;
- and
- a reinforced member disposed on an outer surface of the tubular body, the reinforced member forming at least two rails extending along a longitudinal axial direction of the tubular body, and two imaginative lines respectively connecting the at least two rails to a central line of the tubular body and forming an angle that is larger than 0 degrees and smaller than 180 degrees.
Dependencies are inferred from the claim text.