CN2897668Y - Pencil for machine-readable card - Google Patents

Abstract

The utility model relates to a card daub pencil for the machine reading card. The utility model composes a pen holder capable of holding a pen core; the lower end of the pen holder is provided with a retainment part of the pen core; the inner chamber cross-sectional shape of the retainment part of the pen core is matched with the cross section shape of the card daub pencil core; the retainment part of the pen core is provided with at least 2 open slots which are extended lengthways; the periphery of the retainment part of the pen core is a circular conical surface; the card daub pencil for the machine reading card also composes a locking cap which is matched in shape and screwed with the circular conical surface of the retainment part of the pen core; the inner of the pen holder is provided with a thrust unit of the pen core; the thrust unit of the pen core is a push rod which is screwed with the inner chamber of the pen holder. The utility model is simple in structure and convenient to be used, suitable for the application in the case of fulfilling an answer card.

Description

A kind of pencil for machine-readable card

Technical field

The utility model relates to the pen technology field, especially a kind of a kind of card-smearing writing appliance that uses when the examination card-coating.

Background technology

In now many examinations, generally all use the mode of card-coating to make paper.The present card-smearing writing appliance that when examination, uses of student, generally all be with Pencil with 2B hardness through pencil-knife cut out have rectangle with examination the time card-coating the shape that adapts of shape, then the rectangular box on the card is coated with full.When pen core fractures, need cut out suitable shape again, time-consuming, wasted examinee's quality time.Answering card adopts the machine-readable mode of going over examination papers to carry out when going over examination papers, so the quality of filling is had higher requirement.If the shape that pen core is cut out is improper, cause easily during card-coating and smear inhomogeneously, the erroneous judgement when causing machine scoring influences total marks of the examination.

Summary of the invention

Technical problem to be solved in the utility model is: for solving above-mentioned deficiency, provide a kind of easy to use, simple in structure, fast the pencil for machine-readable card of answer.

For achieving the above object, the technical solution of the utility model is: a kind of pencil for machine-readable card, comprise the penholder that can hold pen core, described penholder lower end is provided with the pen core clamping part, and the shape of the shape of cross section of described pen core clamping part inner chamber and the cross section of card-coating pen core is suitable; Described pen core clamping part is provided with at least two open slots that extend longitudinally, and the outer peripheral face of described pen core clamping part is a taper seat; This pencil for machine-readable card also comprises a shape locking cap suitable with the taper seat of described pen core clamping part and that be threaded with it, and the inside of penholder is provided with the pen core thrust unit.

As a kind of specific embodiment, described pen core thrust unit is the push rod that is connected with the penholder thread in inner cavity.

As a kind of improvement, described push rod comprises screw rod spare and push rod spare, and the shape of the inner chamber of the shape of cross section of described push rod spare and pen core clamping part is suitable.

After having adopted technique scheme, because the penholder lower end is provided with the pen core clamping part, the shape of the shape of cross section of described pen core clamping part inner chamber and the cross section of card-coating pen core is suitable, so can adopt the rectangle pen core that meets the answering card requirement.Because described pen core clamping part is provided with at least two open slots that extend longitudinally, the outer peripheral face of described pen core clamping part is a taper seat; This pencil for machine-readable card also comprises a shape locking cap suitable with the taper seat of described pen core clamping part and that be threaded with it, and open slot is divided into several clamping lobes with the pen core clamping part, and during the rotation lock cap, the clamping lobe shrinks pen core is stepped up; After the pen core wearing and tearing, unclamp and tighten cap, the clamping lobe opens, and can pen core be released by thrust unit, and then will tighten cap and tighten, and just can continue use, and is very easy to use.When adopting the push rod is connected with the thread in inner cavity of penholder as thrust unit, a need rotating push-rod just can be released pen core.Because described push rod comprises screw rod spare and push rod spare, the shape of the inner chamber of the shape of cross section of described push rod spare and pen core clamping part is suitable, when screw rod spare screw propulsion, push rod spare does not rotate with screw rod spare, thereby in the process that promotes pen core,, pen core does not does not wear and tear, can not produce the pencil ash, thereby the answering card of can not making dirty.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is the A-A place cut-away view of the utility model embodiment.

The specific embodiment

As depicted in figs. 1 and 2, a kind of pencil for machine-readable card comprises the penholder 1 that can hold pen core 3, and the top of penholder 1 is provided with the cap for brush 2.Described penholder 1 lower end is provided with the pen core clamping part, and the shape of the shape of cross section of described pen core clamping part inner chamber and the cross section of pen core 3 is suitable; Described pen core clamping part is provided with at least two open slots 5 that extend longitudinally, and forms the clamping lobe, and the outer peripheral face of described pen core clamping part is a taper seat; This pencil for machine-readable card also comprises a shape locking cap 6 suitable with the taper seat of described pen core clamping part and that be threaded with it, the inside of penholder 1 is provided with pen core thrust unit 4, described pen core thrust unit 4 is the push rod that is connected with the thread in inner cavity of penholder 1, described push rod comprises screw rod spare 41 and push rod spare 42, the upper end of described screw rod spare 41 is provided with oval-shaped swivel head 7, this swivel head 7 is convenient to the hand-held rotation of user, and the shape of the inner chamber of the shape of cross section of described push rod spare 42 and pen core clamping part is suitable.Because penholder 1 lower end is provided with the pen core clamping part, the shape of the shape of cross section of described pen core clamping part inner chamber and the cross section of card-coating pen core 3 is suitable, so can adopt the rectangle pen core that meets the answering card requirement.Because described pen core clamping part is provided with at least two open slots 5 that extend longitudinally, the outer peripheral face of described pen core clamping part is a taper seat; This pencil for machine-readable card also comprises a shape locking cap 6 suitable with the taper seat of described pen core clamping part and that be threaded with it, and open slot 5 is divided into several clamping lobes with the pen core clamping part, and during rotation lock cap 6, the clamping lobe shrinks pen core 3 is clamped; After pen core 3 wearing and tearing, unclamp and tighten cap 6, the clamping lobe opens, and can pen core be released by thrust unit 4, and then will tighten cap and tighten, and just can continue use, and is very easy to use.When adopting the push rod is connected with the thread in inner cavity of penholder 2 as thrust unit, need rotating push-rod only just can be with pen core 3 releases.If screw rod spare 41 and push rod spare 42 are made of one, push rod spare 42 must be made and cylindrically rotate in the pen core chamber in order to it so, but the pen core chamber is a rectangle, and the minor face of rectangle is shorter again, so very thin could the rotation therein that push rod spare 42 must be done, this promotes lead for retractable pencil 3 for push rod spare 42 and has brought difficulty.And this minute body structure, can make push rod spare 42 make the prism that cross section is a rectangle, the shape of the inner chamber of its shape of cross section and pen core clamping part is suitable, and the cross sectional dimensions of push rod spare 42 can amplify as far as possible, as long as it can slide in the pen core chamber and just can.Simultaneously, when screw rod spare 41 screw propulsions, push rod spare 42 does not rotate with screw rod spare, thereby in the process that promotes pen core, the pen core that do not wear and tear can not produce the pencil ash, thereby the pollution answering card of can not making dirty.

Claims (4)

1, a kind of pencil for machine-readable card comprises the penholder (1) that can hold pen core (3), it is characterized in that: described penholder (1) lower end is provided with the pen core clamping part, and the shape of the cross section of the shape of cross section of described pen core clamping part inner chamber and pen core (3) is suitable; Described pen core clamping part is provided with at least two open slots (5) that extend longitudinally, and the outer peripheral face of described pen core clamping part is a taper seat; This pencil for machine-readable card also comprises a shape locking cap suitable with the taper seat of described pen core clamping part and that be threaded with it (6), and the inside of penholder (1) is provided with pen core thrust unit (4).

2, a kind of pencil for machine-readable card as claimed in claim 1 is characterized in that: the push rod of described pen core thrust unit (4) for being connected with penholder (1) thread in inner cavity.

3, a kind of pencil for machine-readable card as claimed in claim 2 is characterized in that: described push rod comprises screw rod spare (41) and push rod spare (42).

4, a kind of pencil for machine-readable card as claimed in claim 1 is characterized in that: the shape of the shape of cross section of described push rod spare (42) and the inner chamber of pen core clamping part is suitable.

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