Molded resin gear, moded resin rotaor and molded article

A technology of injection molding and resin, which is applied to gears, components with teeth, belts/chains/gears, etc. It can solve the problems of negative impact on tooth profile accuracy, impact on gear strength, easy eccentricity of shaft hole 55, etc.
CN1432461AInactive Publication Date: 2003-07-30ENPLAS CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ENPLAS CORP
Publication Date
2003-07-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

An injection molded resin gear 1 includes a rim 4 , a hub 3 and a web 5 which connects the rim 4 to the hub 3 . A plurality of ribs 7 for guiding a molten resin, which is injected from pin point gates 8 , to the hub 3 protrude from the outer periphery of the hub 3 on one side of the web 5 so as to correspond to the pin point gates 8 . The ribs 7 are formed so as to be recessed from the side face 10 of the hub 3 . In the connecting portions of the ribs 7 to the hub 3 , fillet portions 12 are formed for smoothly guiding the flow of the resin from the hub 3 toward the web 5 when the injection molded resin gear 1 is formed.
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Description

technical field

[0001] The present invention generally relates to resin gears used in power transmission devices such as those used in precision instruments such as color copiers, color printers, and video tape recorders, various automatic parts, industrial equipment, and the like. Specifically, the present invention relates to a resin gear formed by injection molding. The present invention also relates to an injection-molded resin gear and an injection-molded resin rotating body such as an injection-molded resin roller or an injection-molded resin pulley. In addition, the present invention relates to an injection-molded article or a static shaft supporting member used as a dynamic rotating body such as an injection-molded resin gear or an injection-molded resin roller. Background technique

[0002] For example, a tandem color copier and a color printer are arranged to sequentially perform the steps of forming black (K), red (M), cyan (C) and yellow (Y) Image, to successiv...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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