CN2428314Y

CN2428314Y - Pencil sharpener

Info

Publication number: CN2428314Y
Application number: CN 00241831
Authority: CN
Inventors: 黄钦祥; 黄达伦
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-06-21
Filing date: 2000-06-21
Publication date: 2001-05-02
Anticipated expiration: 2010-06-21

Abstract

The utility model discloses a pencil sharpener. The utility model comprises cutter blades and a shell body provided with a plurality of cutter grooves, wherein, the pore diameter of the inlet of each of the cutter grooves is larger than 6 mm, the cutter blades are installed on the cutter grooves, each of the cutter blades can be edged on both sides, and the cutter blades can also be composed of lead core cutter blades and wood-cutting cutter blades; the cutter grooves are composed of lead core cutter grooves and wood-cutting cutter grooves; a link stopper is arranged on the shell body and shares the same side with the extended ends of lead cores in the wood-cutting cutter grooves. The pencil sharpener is in favor of avoiding the generation of instances of vibration or sharpening line deviation when the lead cores are sharpened; the coaxiality of pencils and the lead core cutter grooves is guaranteed, and thus, the possibility of breaking the lead cores under sharpening is reduced.

Description

Pencil-knife

The utility model belongs to a kind of stationery, especially includes the cutter that housing and blade are used to sharpen a pencil.

Existing pencil-knife is as " pencil-knife " (patent announcement number: CN2089416Y, the day for announcing: on November 27th, 1991) disclose a kind of pencil-knife, this technical scheme is to offer two cavitys on shell, and cavity is provided with double-edged blade, cut earlier wooden, back cutting lead for retractable pencil; But the cavity of its cutting lead for retractable pencil is very little, only can import lead for retractable pencil, thus cutting during lead for retractable pencil lead for retractable pencil can tremble or depart from the line of cut, and cutting dynamics and the dynamics of reversing be difficult to control, makes lead for retractable pencil be fractureed easily.

The purpose of this utility model is to provide a kind of pencil-knife of the lead for retractable pencil that is not easy to fracture.

For achieving the above object, the technical solution adopted in the utility model is: a kind of pencil-knife, comprise the housing and the blade that have a plurality of cutter grooves, and described blade is equipped with greater than 6mm in the entrance hole diameter of described each cutter groove on the cutter groove.

Described blade can be a blade that both sides edge a knife, and also can and cut wooden blade by the lead for retractable pencil blade and form; The edge length of described lead for retractable pencil blade is 5mm～10mm, and blade is positioned at an end of lead for retractable pencil blade; Described edge length of cutting wooden blade is 13mm～20mm; Described cutter groove is by lead for retractable pencil cutter groove and cut wooden cutter groove and form; The initial aperture of cutting lead for retractable pencil part is 2.0mm～2.2mm in lead for retractable pencil cutter groove; To stretch out bore dia be 2.2mm～2.5mm to lead for retractable pencil in cutting wooden cutter groove; On described housing with cut that lead for retractable pencil external part homonymy is provided with link stopper in the wooden cutter groove.

This cuts wooden blade and the lead for retractable pencil blade both can be screwed on housing, also can stick with glue knot on housing.

Owing to taked above-mentioned scheme, the utility model compared with prior art has following advantage:

1, in cutting plumbous process, because the wooden cutting cone face portion of pencil also enters in the lead for retractable pencil cutter groove, and contact with the cavity smooth interior surfaces, increased contact-making surface, tremble or depart from the generation of the line of cut situation when helping avoiding the pencil-lead cutting, guarantee the axiality of pencil and lead for retractable pencil cutter groove, thereby significantly reduce the possibility of the disconnected core of pencil-lead.

2, since on housing with cut that lead for retractable pencil external part homonymy is provided with link stopper in the wooden cutter groove, therefore both can play the spacing effect that stops so that pencil can not cut ad infinitum forward, can also determine pen core length by adjusting link stopper thickness.

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:

Fig. 1 is the structural representation of the utility model pencil-knife;

Fig. 2 is the right view of Fig. 1;

Fig. 3 is the A-A cutaway view of Fig. 1;

Fig. 4 is the B-B cutaway view of Fig. 1.

As shown in Figure 1 and Figure 2, the utility model pencil-knife by housing 1, lead for retractable pencil blade 2, cut wooden blade 3, link stopper 4, lead for retractable pencil cutter groove 5 and cut wooden cutter groove 6 and form; Be screwed on the housing 1 and be mounted with lead for retractable pencil blade 2 and cut wooden blade 3, with lead for retractable pencil blade 2 with cut and offer lead for retractable pencil cutter groove 5 on the wooden blade 3 corresponding positions respectively and cut wooden cutter groove 6, on housing 1 with cut wooden cutter groove 6 in the also vertical link stopper 4 that is placed with of lead for retractable pencil external part homonymy; The knife edge length of lead for retractable pencil blade 2 is 10mm, is about 2/5 of blade lengths, and is positioned at the blade left end, and the blade remainder is slick and sly, has guaranteed can not cut when sharpening a pencil core wooden; The knife edge length of cutting wooden blade is 17mm, equates with blade lengths approximately.

As shown in Figure 3, Figure 4, lead for retractable pencil cutter groove 5 equates with the entrance hole diameter of cutting wooden cutter groove 6, is 7mm; To stretch out bore dia be 2.5mm to lead for retractable pencil in cutting wooden cutter groove 6, bigger than the diameter of general pencil-lead, guaranteed can not cut pen core in cutting wooden process; The initial aperture of cutting lead for retractable pencil part is 2.0mm in lead for retractable pencil cutter groove 5, and is identical with general pencil-lead diameter, is the conical surface in the lead for retractable pencil cutter groove, and the vertex of a cone is positioned at lead for retractable pencil knife-blade front end.

The pencil of needs cuttings stretched into cut in the wooden cutter groove 6, turn clockwise, cut wooden blade 3 and can cut, when pencil-lead stretches out when propping up link stopper 4 the wooden part of pencil, stop to cut wooden, learn thickness that can be by adjusting link stopper 4 thus and the position is set and determine to cut lead for retractable pencil length; This pencil is stretched in the lead for retractable pencil cutter groove 5 then, pencil clockwise rotates, and 2 pairs of pencil-leads of lead for retractable pencil blade cut, because cone angle is certain, the tapering of the lead for retractable pencil that cuts and length are also just determined, therefore learn and can cut out the lead for retractable pencil of different taperings and length according to the position that the vertex of a cone is set; Wooden cutting cone face portion owing to pencil also enters in the lead for retractable pencil cutter groove 5 in addition, and contact with the cavity smooth interior surfaces, increased contact-making surface, tremble or depart from the generation of the line of cut situation when helping avoiding the pencil-lead cutting, guarantee the axiality of pencil and lead for retractable pencil cutter groove 5, thereby significantly reduce the possibility of the disconnected core of pencil-lead.

Claims

1, a kind of pencil-knife comprises the housing (1) and the blade that have a plurality of cutter grooves, it is characterized in that: described blade is equipped with greater than 6mm in the entrance hole diameter of described each cutter groove on the cutter groove.

2, pencil-knife according to claim 1 is characterized in that: described blade is a blade that both sides edge a knife.

3, pencil-knife according to claim 1 is characterized in that: described blade is by lead for retractable pencil blade (2) and cut wooden blade (3) and form, and the edge length of described lead for retractable pencil blade (2) is 5mm～10mm, and blade is positioned at an end of lead for retractable pencil blade (2); Described edge length of cutting wooden blade (3) is 13mm～20mm.

4, pencil-knife according to claim 1 is characterized in that: described cutter groove is by lead for retractable pencil cutter groove (5) and cut wooden cutter groove (6) and form; The initial aperture of cutting lead for retractable pencil part is 2.0mm～2.2mm in lead for retractable pencil cutter groove (5); To stretch out bore dia be 2.2mm～2.5mm to lead for retractable pencil in cutting wooden cutter groove (6).

5, according to claim 3 or 4 described pencil-knifes, it is characterized in that: go up and cut that lead for retractable pencil external part homonymy is provided with link stopper (4) in the wooden cutter groove (6) at described housing (1).