Central gauge

Abstract

To suitably improve an appearance and usability by preventing an arm from projecting from a pedestal at the time of housing, even when the arm is fully pulled. A pair of arms 6 are installed to a pedestal 1 projectably and indentably in a direction opposite to the pedestal 1, and base end sides of the arms 6 are interlocked with each other via a synchronous mechanism 7 in the pedestal 1, so as to pull a tip end side of both arms 7 from the pedestal 1. A paper is laid down between standing pieces 60 standing on the tip end sides of the arms 7, so as to determine a center of the paper. The synchronous mechanism 7 are constituted of: a pair of pinion gears 71 installed at positions biased in projecting and indenting directions of each arm 6 from a center C of the pedestal 1 respectively; and an intermediate gear 72 synchronously actuatably associating the pinion gears 71 with each other. Each pinion gear 71 is engaged with a rack tooth 61 installed to each corresponding arm 6, so as to synchronously cause projecting and indenting actions of both arms 6.

Description

technical field [0001] The present invention relates to a center gauge for indexing the center position of paper attached to a hole punch or the like. Background technique [0002] For example, since the main purpose of a hole punch is to punch a hole for bookbinding, the position of the hole needs to be constant at all times. Therefore, in such a hole punch, a center gauge for indexing the center of the paper is usually attached to a base on which a stack of paper is placed. [0003] However, as such a center gauge, it is conceivable to provide a pair of brackets that can protrude in opposite directions from the pedestal (protrude and sink), and the base end sides of these brackets are interlocked by a synchronizing mechanism in the pedestal, and the two brackets are pulled out from the pedestal. On the front end side of the holder, the center of the paper is indexed by sandwiching the paper between upright pieces erected on the front end side of the holder. [0004] Howe...

AI Technical Summary

Problems solved by technology

[0006] However, if this is done, the base end of the stand protrudes sideways from the edge on the opposite side of the pedestal when it is used for paper of a standard size that is usually used because the entire length of the stand enters the inside of the pedestal during storage. , not only is not beautiful, but also has the problems of interference with surrounding items, storage, and increased volume during packaging

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