CN2440664Y - Mechanical pencil with square core - Google Patents

Abstract

The utility model relates to a mechanical card masking pen with a square core, which belongs to stationery. The mechanical card masking pen with a square core is used for masking examination answers on answering cards and is composed of a pen lead core, a sheath, a pen head, a rubber sleeve, a lock sleeve, a connecting sleeve, a spring, a clamping head, a pen core barrel, a pen barrel and a card clamping pen cap. The utility model is characterized in that the lead core is rectangular and the cross section of the lead core is rectangular; one end of the clamping head in the mechanical card masking pen is in a hollow cross shape; the pen head and the pen barrel are spirally buckled; the front end of the pen head is provided with the sheath with a rectangular hole. The utility model is used for masking cards to answer examination, which saves time and has no faults.

Description

Automatic square core card-coated pencil

The utility model relates to a kind of stationery, especially a kind of automatic side's core card-coating pen.

At present, some examination test paper uses a computer and criticizes volume, this examination paper need be used the pencil card-coating, after must cutting with cutter, could use,, cause when being coated with a model answer, must smearing back and forth with nib because the pencil that cutter is cut is relatively sharper with the pencil of rod system, even nib is whittled into flat-shaped, also can when using a moment, grind partially, so, must not be no longer flat from newly cutting with cutter the inclined to one side pencil of mill.Like this, caused the waste of test time, in addition, because nib is sharp or inclined to one side situation, it is inaccurate to influence the position that is coated with, and causes bigger loss possibly.

The purpose of this utility model is for improving examination personnel's answer speed, improve the degree of accuracy of smearing, developing the card-smearing writing appliance of a kind of Fang Xin.

The utility model is achieved in that automatic square core card-coated pencil, comprise the cap for brush, the pen cap, nib is characterized in that pen core is a cuboid, its cross section is a rectangle, this dop 8 inwalls also are rectangles, and the dop front end is cut into cross, and middle sky is a rectangle, the front end of nib 3 has sheath 2, sheath 2 is rectangles, and nib is buckled and joined with pen container 10 spiral shells, in be provided with rubber sleeve 4.

The utility model has the advantages that: card-coating accurately, fast, save time, can disposablely be coated with certain selected answer because in establish spring effect, pen core is elongated or shortened according to required, easy to use.

Accompanying drawing is a structural representation of the present utility model.

Below in conjunction with drawings and Examples the utility model is described in detail.

The utility model by lead for retractable pencil 1, sheath 2, nib 3, rubber sleeve 4, lock sleeve 5, adapter sleeve 6, spring 7, dop 8, pen core tube 9, pen container 10, do not block 11, the cap for brush 12 forms, the key of the automatic square core card-coated pencil of this kind is that the front end with the dop in this 8 is slit into cross, middle rectangle is hollow, make it that elastic force that closes that unclamps be arranged, in the inner end of dop 8 spring 7 is arranged, nib 3 front ends are stained with sheath 2, the sheath endoporus is a rectangle, nib 3 is buckled with pen container 10 usefulness spiral shells and to be connected, the nib inwall has stupefied, works the snap action that stretches lead for retractable pencil.Lead for retractable pencil 1 is a cuboid, and its cross section is a rectangle.The automatic square core card-coated pencil of this kind is because be equipped with special rectangle pen core, the specification of its cross section answer square frame lucky and on the answering card equates, therefore need only dab once, can disposablely be coated with a square frame, moreover, under the short situation of the lead for retractable pencil mill of the tip of the brushstyle of a writing or painting, as long as the flicking nib, pen core can be extended, the user can continue to use easily.

Claims (1)

1, a kind of automatic square core card-coated pencil, comprise the cap for brush, the pen cap, nib, it is characterized in that its pen core is a cuboid, its cross section is a rectangle, and this dop (8) inwall also is a rectangle, the dop front end is cut into cross, in be rectangle with sky, the front end of written (3) has sheath (2), sheath (2) is a rectangle, nib is buckled and is joined with pen container (10) spiral shell, in establish rubber sleeve (4).

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