CN2224743Y

CN2224743Y - Pencil sharpener against breaking lead

Info

Publication number: CN2224743Y
Application number: CN 95239576
Authority: CN
Inventors: 蒋承林
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-04-11
Filing date: 1995-04-11
Publication date: 1996-04-17
Anticipated expiration: 2005-04-11

Abstract

The utility model provides a pencil sharpener against breaking lead, which is composed of a pencil sharpener casing and a peel holder, wherein, a wood sharpening taper hole, a lead sharpening taper hole, a widened wood sharpener blade, and a lead sharpener blade are arranged on the pencil sharpener casing; a pilot hole and a spacing board are arranged on the peel holder. Lead sections can not be damaged during sharpening wood sections, a lead length is controlled by the spacing board, and the lead can be sharpened through the lead sharpening taper hole to reach a needed thickness for writing. The lead can not be broken even if force used is uneven. The utility model has the advantages of convenience, reliability, and no environment pollution of wood chips and lead chips.

Description

The non-breaking lead pencil sharpener

The utility model relates to cultural and office supplies, more particularly, is that a kind of novel children use the non-breaking lead pencil sharpener.

There is following weak point in use in existing pencil sharpener: 1. and disconnected easily plumbous, when particularly children use, since firmly irregular, be easy to make lead for retractable pencil to be cut off by blade.2. the tapering of taper hole is too big, and the pen core length of formation is too short, needs to roll up continually to cut.

The process by children being used pencil sharpener and the loading characteristic of pencil sharpener sheet are analyzed, can find, the reason that pencil sharpener cuts off lead for retractable pencil mainly contains: 1. blade is long and fixed screw is few, when pencil inserts taper hole, warpage takes place in the blade two ends, cause the cutting pen core place depth of cut to increase, cut off pen core or Duan lead for retractable pencil when pen core attenuates.2. the mechanical property of the wooden part of pencil and lead for retractable pencil differs too big, and volume preferably adopts the different depths of cut when cutting, and existing pencil sharpener but can't provide.The longitudinal center line of pencil can not guarantee consistent with the longitudinal center line of pencil sharpener, particularly when volume is cut new pencil.Only consider wherein a certain reason in the patent in the past, and will guarantee non-breaking lead in the working angles, must all take appropriate measures at above 3 kinds of reasons.

The purpose of this utility model is to provide the pencil sharpener of the non-breaking lead that a kind of suitable children use.

The purpose of this utility model can realize in the following manner: a kind of non-breaking lead pencil sharpener, include the pencil sharpener housing, and cut the wooden spike hole on it and cut wooden blade, on the pencil sharpener housing, also have and cut plumbous taper hole, be fixed with on it and cut the knib sheet.Described pencil sharpener housing is placed in the crumb loading box body of side opening, is having pilot hole with cutting the wooden spike hole with cutting on the corresponding crumb loading box body of plumbous taper hole butt end, and the bits collecting box side plate of thin end correspondence is as limiting plate.Describedly cut wooden blade and cut the knib sheet and fix with pair screws.

Because cut wooden blade and the pin knib sheet of cutting the wooden spike hole and cutting on the plumbous taper hole of the present utility model adopts two screws to fix, and can guarantee to roll up and cut not warpage of xylem timesharing blade.Pilot hole can guarantee that the longitudinal center line of pencil is consistent with the center line of taper hole, and limiting plate makes each projected length of lead unanimity, thereby can guarantee even as non-breaking lead of pencil shape that each volume is cut out.The wooden spike hole of cutting simultaneously of the present utility model is less with the cone angle of cutting plumbous taper hole employing, and wood chip that volume chips away and plumbous considering to be worth doing are stored in the crumb loading box body, and be free from environmental pollution, and very suitable children use.

Description of drawings:

Accompanying drawing 1 is the structural perspective that the utility model one side is cut open.

Accompanying drawing 2 is structural perspective of the utility model bits collecting box.

1,2 the utility model is described in further detail with reference to the accompanying drawings:

Shown in accompanying drawing: a kind of non-breaking lead pencil sharpener, include pencil sharpener housing 2, offer on it and cut wooden spike hole 3 and cut plumbous taper hole 5, and use two screws (10) mutually and fixedly cut wooden blade 4 and cut knib sheet 6, described cut wooden blade 4 and cut knib sheet 6 length be 17～19mm.Cutting wooden spike hole 3 butt diameters is 7.8～8.0mm, and diameter is 2.4～2.6mm, and cutting plumbous taper hole 5 butt diameters is 5.5～5.7mm, and thin end is slightly less than the diameter of pencil, and diameter at smaller end directly is 0.7～0.8mm.Described pencil sharpener housing 2 is fixed in bits collecting box 1 body of side opening, have pilot hole 7,8 cutting wooden spike hole 3 and cut on the corresponding crumb loading box body 1 of plumbous taper hole 5 butt end faces, when sharpening a pencil, pencil can extend into from pilot hole 7 or 8 respectively to be cut wooden spike hole 3 or cuts in the plumbous taper hole 5, make when sharpening a pencil, pencil keeps certain stablizing, and only the axis direction to taper hole moves, so not easily broken lead.As limiting plate 9, control the length that sharpens a pencil at the side plate of cutting the wooden spike hole 3 and the bits collecting box 1 of the small end face of cutting plumbous taper hole 5, the lead bits that pencil tip volume chips away withdraw from groove from the lead bits and withdraw from.Crumb loading box body 1 is provided with crumb loading lid 12.

The process of sharpening a pencil is: when pencil is cut wooden spike hole 3 by the pilot hole insertion and rotated, cut the wooden part that wooden blade 4 begins to cut pencil, but do not cut lead for retractable pencil, when the lead for retractable pencil that rolls out contacts limiting plate 9, pencil can't continue volume and cut, can take out pencil and insert from another pilot hole 8 and cut plumbous taper hole 5, lead for retractable pencil is fined away write required thickness with cutting knib sheet 6.Because cutting plumbous taper hole 5 is slightly less than pencil diameter, cuts plumbous taper hole 5 after lead for retractable pencil is cut and play position-limiting action automatically.

Claims

1. a non-breaking lead pencil sharpener includes pencil sharpener housing (2), cuts wooden spike hole (3) on it and cuts wooden blade (4), it is characterized in that: also have on pencil sharpener housing (2) and cut plumbous taper hole (5), be fixed with on it and cut knib sheet (6).

2. non-breaking lead pencil sharpener according to claim 1 is characterized in that: describedly cut wooden blade (4) and cut the long 17～19mm that is of knib sheet (6).

3. non-breaking lead pencil sharpener according to claim 1 and 2, it is characterized in that: the described butt diameter of cutting wooden spike hole (3) is 7.8～8.0mm, diameter at smaller end directly is 2.4～2.6mm, and the described butt diameter of cutting plumbous taper hole (5) is 5.5～5.7mm, and diameter at smaller end directly is 0.7～0.8mm.

4. non-breaking lead pencil sharpener according to claim 1 and 2, it is characterized in that: described pencil sharpener housing (2) is placed in the crumb loading box body (1) of side opening, opening part is provided with crumb loading lid (12) and is having pilot hole (7), (8) on plumbous taper hole (5) the corresponding crumb loading box body of butt end (1) with cutting wooden spike hole (3) and cut, and corresponding crumb loading box body (1) side plate of thin end is as limiting plate (9).

5. non-breaking lead pencil sharpener according to claim 3, it is characterized in that: described pencil sharpener housing (2) is placed in the crumb loading box body (1) of side opening, opening part is provided with crumb loading lid (12) and is having pilot hole (7), (8) on plumbous taper hole (5) the corresponding crumb loading box body of butt end (1) with cutting wooden spike hole (3) and cut, and corresponding crumb loading box body (1) side plate of thin end is as limiting plate (9).

6. non-breaking lead pencil sharpener according to claim 1 and 2 is characterized in that: describedly cut wooden blade (4) and cut knib sheet (6) and all use two screws (10) fixing.

7. non-breaking lead pencil sharpener according to claim 3 is characterized in that: describedly cut wooden blade (4) and cut knib sheet (6) and all use two screws (10) fixing.

8. non-breaking lead pencil sharpener according to claim 4 is characterized in that: describedly cut wooden blade (4) and cut knib sheet (6) and all use two screws (10) fixing.

9. non-breaking lead pencil sharpener according to claim 5 is characterized in that: describedly cut wooden blade (4) and cut knib sheet (6) and all use two screws (10) fixing.