Knuckle arm

a technology of knuckle and knuckle, which is applied in the field of knuckle arms, can solve the problems of high manufacturing cost and particularly burdensome knuckle arms, and achieve the effect of convenient manufacturing

Inactive Publication Date: 2006-03-23
ASIA OPTICAL CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010] An object of this invention is to provide a knuckle arm that can be operated by application of a minimal force.
[0012] A further object of this invention is to provide a knuckle arm that includes only one cam surface requiring high manufacturing precision.
[0024] Because the inner sliding seat and the resilient member are disposed within the base, when the top cover is opened or closed by one hand, the user does not have to support the weight of the inner sliding seat or the resilient member. Thus, the top cover can be operated in a manner requiring the user to exert a minimal force. Furthermore, because the inner sliding seat is disposed within the base, lubrication oil is applied within the base. Thus, the staining of paper, documents, etc, by the lubrication oil can be prevented during use of the office machine.
[0025] In addition, the knuckle arm has only one cam surface, and therefore can be easily manufactured.

Problems solved by technology

This particularly burdensome when the top cover is opened or closed with one hand.
The processes required to achieve such high precision ultimately result in high manufacturing costs of the knuckle arm 10.

Method used

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Embodiment Construction

[0039] Referring to FIGS. 2 and 8, the preferred embodiment of a knuckle arm according to this invention interconnects a machine body 31 and a top cover 32 of an office machine 30, and is constructed so as to allow for the opening and closing of the top cover 32 relative to the machine body 31. The office machine may be a copier, scanner, etc.

[0040] The knuckle arm includes a base 40, an inner sliding seat 50 disposed slidably within the base 40, four resilient members 60 (only two are shown in FIGS. 2 and 8) disposed between the base 40 and the inner sliding seat 50, a first pivotable seat 70 disposed pivotally on the base 40, a pressing rod 100 extending through the first pivotable seat 70 and kept in contact with a cam surface 51 of the inner sliding seat 50, a second pivotable seat 80 sleeved on the first pivotable seat 70, a third pivotable seat 90 disposed pivotally on the second pivotable seat 80, a first pivot rod 101 extending through the second pivotable seat 80 and the b...

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PUM

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Abstract

A knuckle arm interconnects a machine body and a top cover of a machine, and includes a base fixed on the machine body and having a receiving frame, an inner sliding seat slidable within the receiving frame and having a cam surface, a resilient member disposed between the receiving frame and the inner sliding seat, a first pivotable seat sleeved on the base, a pressing rod extending through the first pivotable seat and biased to contact the cam surface, and a second pivotable seat slidable on the first pivotable seat and attached to the top cover of the machine.

Description

CROSS-REFERENCE TO RELATED APPLICATION [0001] This application claims priority of Taiwanese Application No. 093128708, filed on Sep. 22, 2004. BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] This invention relates to a part of an office machine, and more particularly to a knuckle arm that interconnects a machine body and a top cover of an office machine. [0004] 2. Description of the Related Art [0005] Two knuckle arms are typically disposed between a top cover and a machine body of an office machine, such as a copier, or scanner, for use in the opening and closing of the top cover relative to the machine body. Referring to FIG. 1, a conventional knuckle arm 10, which is disclosed in U.S. Pat. No. 6,456,365, is shown to include a mounting seat 11 fixed on a machine body 21 of an office machine 20, a connecting seat 12 disposed pivotally on the mounting seat 11, a bottom cam sliding seat 13 disposed slidably within the connecting seat 12, a top cam sliding seat 14 ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): E04G3/00
CPCY10T16/54025G03B27/62
Inventor ZHANG, KUANG-WEICHEN, TAI-XIONG
Owner ASIA OPTICAL CO INC
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