CN2424933Y - Pencil - Google Patents

Abstract

The utility model relates to a learning article which is an ever long pencil. The utility model comprises a pencil, wherein, a lead rod provided with a lead is sheathed in a hollow pencil rod, and the lead rod is relatively fixed to the front end of an expansion ring arranged on the mouth end of the pencil rod. When a pencil is planned, the end of the expansion ring is manually screwed and is squeezed to the lead rod on an inner face, and then, the expansion ring is pushed and rotated towards the direction of a pencil planning tool; the expansion ring is blocked on the mouth of the pencil planning tool and is backwards shifted and retracted, the end mouth of the lead rod is exposed and is led into the pencil planning tool, and hands are continuously and alternatively used to push and rotate the pencil; due to telescopic action, the expansion ring and the pencil rod are continuously backwards shifted, and thus, the lead rod is planned and the pencil can not be planned to short. The utility model has the advantages that the pencil is the traditional pencil which needs planning, while the pencil can not be shorter and shorter in use, and the utility model is favorable for writing and saving the pencil.

Description

Pencil

The utility model belongs to study article, specifically is exactly a kind of Pencil.

All there are the shortcoming of using shorter and shorter in existing rod or paper roll pencil, thereby bring influence to hold a pen and write, and short pencil is lost and caused waste.

It is that tradition planing pencil can not used short more Pencil again more that the purpose of this utility model just provides a kind of.

The utility model can be realized by following scheme: comprise pencil, will have the reservoir shaft of pencil-lead to be inserted in the hollow penholder, the expanding ring front end relative fixed reservoir shaft of penholder mouth end; When digging, the reservoir shaft that hand-tight make-up expanding ring end is expressed to inner face is push-jump to digging a tool direction, and expanding ring is obstructed expanding ring is shunk to backward shift digging a tool mouth, the reservoir shaft port is exposed enter to dig a tool.Constantly changing hand push changes pencil, thus since telescopic action make expanding ring together with penholder just constantly to backward shift, reservoir shaft is by plane and penholder can not be dug weak point like this.

The advantage of the utility model contrast prior art is, can keep certain-length to use to the pencil of planing, is beneficial to write and improve the pencil utilization rate.

Fig. 1 is the utility model structural representation.

The utility model is described in further detail below in conjunction with drawings and Examples: referring to accompanying drawing, existing Wood-bar pencil diameter is slightly dwindled hollow penholder 4 inner faces that are inserted in existing Wood-bar pencil diameter as reservoir shaft 5, in the front end 1 relative fixed reservoir shaft 5 of the expanding ring 2 of 4 mouthfuls of ends of this penholder.When digging, the end 3 of hand-tight make-up expanding ring 2 is expressed to the reservoir shaft 5 of inner face, to digging the push-jump whole pencil of a tool direction.Because expanding ring 2 ports are slightly larger than and dig a tool mouth and can not enter when stressed and dig a tool, expanding ring 2 front ends 1 will shrink to backward shift like this, and promptly reservoir shaft 5 front ends that were wrapped in by expanding ring originally will expose and enter a plane tool.Meanwhile, the whole expanding ring 2 after the contraction openhandedly will restore to backward shift when opening pencil digging push-jump the changing of pen, promptly the penholder 4 that is connected with expanding ring 2 with expanding ring simultaneously to backward shift.So continuous plane pen, penholder constantly retreats with expanding ring, and is like this equally when digging next time again, uses up until reservoir shaft.

Claims (1)

1. A kind of study article Pencil, comprise pencil, it is characterized in that: reservoir shaft (5) is inserted in the hollow penholder (4), front end (1) the relative fixed reservoir shaft (5) of the expanding ring (2) of penholder mouth end, and the reservoir shaft (5) that is expressed to inner face by the end (3) that hand is tightened expanding ring (2) is push-jump to digging a tool direction, expanding ring (2) is obstructed this expanding ring is shunk to backward shift digging a tool mouth, thereby reservoir shaft (5) constantly being exposed enter digs a tool and dug carefully.

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