CN201646181U

CN201646181U - Special pencil sharpener for answer sheet

Info

Publication number: CN201646181U
Application number: CN2009203515625U
Authority: CN
Inventors: 李欢书; 侯大赫
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-08-23
Filing date: 2009-12-25
Publication date: 2010-11-24
Anticipated expiration: 2019-12-25

Abstract

The utility model discloses a special pencil sharpener for an answer sheet, which can sharpen the core of a pencil to be flat-shaped and to have a rectangular head. Being improved on the basis of the original hand-rocking pencil sharpener, the special pencil sharpener comprises a sharpener outer frame, a tooth ring, a rocker, a knife holder, a clamping piece, a pencil scraps container, wherein the pencil scraps container is arranged at the lower part of the sharpener outer frame; the clamping piece is arranged at one side of the outer frame; an inner tooth ring is fixed in the outer frame; the opposite side of the clamping piece of the outer frame is provided with the rocker; the rocker penetrates trough the inner teeth ring from a hole to be connected with the knife holder at the inner side; a hobbing cutter and a planet gear are connected on the knife holder by a shaft; one end of the planet gear is meshed with the inner teeth ring, and the other end thereof is connected with the spiral hobbing cutter; only one edge of the hobbing cutter of the original hand-rocking pencil sharpener is remained, and other edges are worn away; the knife holder is provided with a taper-shaped cavity; one side of the taper-shaped cavity, right facing to the hobbing cutter, is provided with a sharpening long hole; and the number of the teeth of the planet gear accounts for a half of the teeth of the inner tooth ring. The special pencil sharpener is convenient for sharpening pencil and saves time for examinees, and the answer sheet painted with the pencil sharpened by the special pencil sharpener can meet the requirement of being checked by a computer.

Description

The special-purpose pencil sharpener of answering card

Technical field the utility model relates to stationery, and particularly a kind of can be processed into flat, head to pencil-lead be the special-purpose pencil sharpener of rectangular answering card.

Background technology pencil sharpener in the market has a lot, as rotary pencil-knife, hand-rail type pencil-knife etc., but it is pointed that they can only be whittled into pen core, can be used to write, paint, drawing etc., along with popularizing of computer, begin in the examination to go over examination papers with computer, this just requires the examinee the whole painted blacks of rectangle frame on the answering card, otherwise can't go over examination papers, this just make the examinee in the examination process, need frequently with the pointed rectangle that is whittled into of pencil, waste time and energy, influence examinee's achievement, be unfavorable for examination.

The summary of the invention the purpose of this utility model is to solve traditional pencil sharpener can only be whittled into pen core pointed problem, provides a kind of answering card easy to use special-purpose pencil sharpener.

The technical solution of the utility model is as follows:

The special-purpose pencil sharpener of answering card, on the basis of former hand-rail type pencil-knife, improved exactly, comprise the pencil sharpener outrigger, gear ring; rocking arm; knife rest; fastener; a bits container etc.; pencil sharpener outrigger bottom is a bits container; outrigger one side has fastener; be fixed with interior toothed ring gear in the outrigger; the fastener opposite side of outrigger has rocking arm; toothed ring gear was connected with inboard knife rest in rocking arm passed by the hole; be interference fit between hobboing cutter and the planetary gear and be connected on the knife rest by axle; planetary gear one end and interior toothed ring gear mesh, and the other end links to each other with spiral hobbing cutter only keeps a blade with the hobboing cutter of former hand-rail type pencil-knife; other blade all grinds off; conical cavity is arranged on the knife rest, and conical cavity has the cutting slotted hole over against hobboing cutter one side, and the planetary number of teeth is half of the interior toothed ring gear number of teeth;

The toothed ring gear number of teeth is the 20-48 tooth in described;

The described planetary gear number of teeth is the 10-24 tooth.

Advantage of the present utility model is: 1, sharpen a pencil conveniently, for the examinee saves valuable time; Not only saved time when 2, smearing answering card but also met the requirement of computer marking.

Description of drawings Fig. 1 is the utility model structural profile schematic diagram;

Fig. 2 is the utility model parts hobboing cutter section of structure;

Fig. 3 is the upward view of Fig. 2;

Fig. 4 is the planetary profiles of the utility model parts.

The utility model is described in further detail below in conjunction with accompanying drawing for the specific embodiment.

Can see structure of the present utility model by figure, the special-purpose pencil sharpener of answering card, on the basis of former hand-rail type pencil-knife, improved exactly, comprise the pencil sharpener outrigger, interior toothed ring gear 1; rocking arm; knife rest 6; fastener; a bits container etc.; pencil sharpener outrigger bottom is a bits container; outrigger one side has fastener; can block pencil; toothed ring gear 1 in being fixed with in the outrigger; the fastener opposite side of outrigger has rocking arm; toothed ring gear 1 was connected with inboard knife rest 6 in rocking arm passed by hole 7; be connected on the knife rest 6 for interference fit and by axle 4 between hobboing cutter 3 and the planetary gear 2, planetary gear 2 one ends and 1 engagement of interior toothed ring gear, the other end links to each other with spiral hobbing cutter 3; 3 on the hobboing cutter of former hand-rail type pencil-knife is kept a blade 8; other blade all grinds off, and conical cavity 5 is arranged on the knife rest 6, and pencil can be inserted; conical cavity 5 has the cutting slotted hole over against hobboing cutter 3 one sides, and the number of teeth of planetary gear 2 is half of interior toothed ring gear 1 number of teeth;

Toothed ring gear 1 number of teeth is the 20-48 tooth in described;

Described planetary gear 2 numbers of teeth are the 10-24 tooth.

During use, pencil is inserted in the conical cavity 5, shake rocking arm, planetary gear 2 rotates around interior toothed ring gear 1 on the one hand, on the other hand around axle 4 rotations, because the number of teeth of planetary gear 2 is interior toothed ring gear 1 number of teeth half, when planetary gear 2 turns over when circle around interior toothed ring gear 1, hobboing cutter 3 just turns over two circles, because 3 on hobboing cutter leaves a blade 8, so just two planes of symmetry at pencil respectively cut once, then pencil can be cut into flat, head is a rectangle.

Claims

1. special pencil sharpener for answer sheet; Comprise the pencil sharpener outrigger; Interior toothed ring gear (1); Rocking arm; Knife rest (6); Fastener; Bits container; Pencil sharpener outrigger bottom is a bits container; Outrigger one side has fastener; Be fixed with interior toothed ring gear (1) in the outrigger; The fastener opposite side of outrigger has rocking arm; Rocking arm passes interior toothed ring gear (1) by hole (7) and is connected with inboard knife rest (6); Also be connected on the knife rest (6) by axle (4) for interference fit between hobboing cutter (3) and the planetary gear (2); Planetary gear (2) one ends and interior toothed ring gear (1) engagement; The other end links to each other with spiral hobbing cutter (3); Conical cavity (5) is arranged on the knife rest (6); Conical cavity (5) has the cutting slotted hole over against hobboing cutter (3) one sides; It is characterized in that: the hobboing cutter (3) of former shaking pencil cutter is only kept a blade (8); Other blade all grinds off, and the number of teeth of planetary gear (2) is half of interior toothed ring gear (1) number of teeth.

2. the special-purpose pencil sharpener of answering card as claimed in claim 1, it is characterized in that: toothed ring gear (1) number of teeth is the 20-48 tooth in described.

3. the special-purpose pencil sharpener of answering card as claimed in claim 1, it is characterized in that: described planetary gear (2) number of teeth is the 10-24 tooth.