CN2732446Y

CN2732446Y - Safety cutter head

Info

Publication number: CN2732446Y
Application number: CN 200420037115
Authority: CN
Inventors: 张启文
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-06-24
Filing date: 2004-06-24
Publication date: 2005-10-12
Anticipated expiration: 2014-06-24

Abstract

The utility model discloses a safety cutter head, including a cutter blade. The safety cutter head is characterized in that the cutter blade is clamped on an upper sheath, the cutter head exposes out of the upper sheath, a lower sheath which can guard the cutter head is also arranged below the upper sheath, the lower sheath is buckled on the upper sheath, and a spring is arranged between the upper and the lower sheathes. The structure of the safety cutter head greatly enhances the safety of the product.

Description

A kind of Safety cutter head

Technical field

The utility model relates to a kind of cutter, the Safety cutter head that needs external force to press when relating to a kind of the use specifically.

Background technology

Existing cutting tool, the instrument of especially cutting a sheet of paper adopts cutting knife type as manual trimmer commonly used more, cutter is exposed at a side of base outward, causes its security very bad, is easy to because of carelessness cause danger, and blade makes its sharpening also cumbersome with after blunt; And other the instrument that cuts, for example utility model patent 2454098 discloses a kind of cutting tool that gets final product free-hand replacing blade of need not dismantling, the replacing of blade is very convenient, but this cutter blade when not using is exposed to the outside, and design safety is still not enough.

Summary of the invention

Technical problem to be solved in the utility model is the present situation at above-mentioned prior art, provides a kind of use safer cutter head.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of Safety cutter head, comprise blade, it is characterized in that blade is clamped on upper jacket, cutter head exposes outside the upper jacket, the following lower jacket that can protect cutter head that also is provided with of upper jacket, described lower jacket is buckled on the upper jacket, also is provided with spring between the upper and lower sheath.

The cross section of described upper jacket can be " protruding " font, and blade is clamped in the protrusion piece that is molded over upper jacket central authorities; The shape of lower jacket " protruding " font that matches with upper jacket, the projection in the middle of it has through hole, and the protrusion piece inserting of upper jacket is in the through hole of lower jacket projection.

The protrusion piece of described upper jacket comprises two parts, the one, be molded directly within the stator on the upper jacket, and the one, be buckled in the activity template on the stator, blade is fitted in and is clamped on the activity template between stator and the activity template.

Have the hole on described blade and the stator, form on the activity template and the corresponding projection in this hole.

The both sides that described upper jacket protrudes piece form the side muscle that the bottom has block, and the forward and backward side of lower jacket projection has side opening.The side muscle of upper jacket is buckled on the side opening of lower jacket, limits the maximum displacement that spring ejects lower jacket by block.

Between described side muscle and the stator space is arranged.

The both sides that described upper jacket protrudes piece form projection, and an end of spring is fixed on the projection; The spring hole that the receivability spring other end is arranged on the correspondence position that lower jacket cooperates with it.

Form overlap on left and right the bottom edge of the projection of described lower jacket.

Be provided with a base of tool below the described Safety cutter head, have groove on the base of tool, the overlap on the lower jacket colludes on the base that is located at this groove, and Safety cutter head can move along groove.

Described base of tool two ends are fixed on the two ends of base, and base of tool termination side forms the lateral column that the bottom has block, have the lateral column hole on the correspondence position of base two ends, and the lateral column of base of tool two ends side is buckled in the lateral column hole on the base; The centre position of base of tool two ends also forms spring eye, and the corresponding position of base forms spring stack, and spring is installed in therebetween; Base (15) also has narrow thin cutter groove corresponding to the position of cutter head.

Compared with prior art, advantage of the present utility model is: owing to used the duplicate protection cover, blade is protected in the lower jacket when not using, and can not be exposed to the outside; Security increases greatly, needs certain external force to press during simultaneously owing to use cutter head is exposed, and for child's casual operation, its security also is very high like this.In addition, Safety cutter head of the present utility model, owing to used dismountable structure, so the replacing of blade also is very easily.

Description of drawings

Fig. 1 is the cutaway view of the utility model embodiment 1.

Fig. 2 is the A-A view of Fig. 1.

Fig. 3 is the B-B view of Fig. 2.

Fig. 4 is the cutaway view of the utility model embodiment 2.

Structural representation when Fig. 5 is the utility model embodiment 2 work.

The specific embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing, but the present invention is not limited in following embodiment.

Embodiment 1

As Fig. 1, Fig. 2 and shown in Figure 3, Safety cutter head comprises blade 1, and there is a circular hole centre of blade 1, forms the cylinder 21 of protrusion on the activity template 52, and cylinder 21 both sides also form block 19; The cross section of upper jacket 2 is down " protruding " shape, forms stator 51 in the middle of it, and the centre of stator 51 has and is used for the equipped circular hole 22 of activity template, and the both sides of circular hole 22 respectively have a square opening 20 corresponding to the position of activity template 52 both sides blocks 19; Blade 1 is fitted on the activity template 52, and the cylinder 21 on the activity template 52 passes the circular hole on blade and the stator, the three is fitted be fixed together, and in the middle of blade was clamped in, cutter head exposed; Simultaneously, the block 19 on activity template 52 both sides is buckled in the square opening 20 on the stator 51, and like this, blade 1, activity template 52 and upper jacket 2 just have been fixed together; When needs were changed blade, the block of pressing on the activity template 52 19 made it to deviate from from the square opening 20 of stator 51, and activity template will be separated from stator, took out blade and just can change, and is very convenient.

Form the bottom on the forward and backward side of upper jacket 2 and have the side muscle 18 of block 8, side muscle 18 and stator 51 are from a distance; The cross section of lower jacket 3 is the inverted "convex" shape shapes that match with upper jacket 2, and the centre of lower jacket 3 has the through hole 7 of cuboid from top to bottom, and projection 5 sleeves of upper jacket 2 are in through hole; Also have hole 9 on preceding, the side of lower jacket 3 projections 7; The side muscle 18 that has block on upper jacket 2 sides is buckled in the through hole 7 on the lower jacket side, and upper and lower sheath is fixed and cutter head is protected in the through hole 7 of lower jacket 3, and is as safe as a house.

The both sides that upper jacket 2 protrudes piece 5 also form cylinder projection 11 respectively, and an end of spring 4 is fixed on this projection 11; Form spring hole 12 on the correspondence position of lower jacket 3, the other end of spring is installed in the spring hole 12; When not working, upper and lower sheath leaves certain distance under the effect of spring, and cutter head is protected in the through hole 7 of lower jacket 3, and the block 8 on the upper jacket 2 side muscle 18 colludes in the square opening 9 of lower jacket 3 sides simultaneously, and both can not thrown off.

In addition, also form the protrusion 17 of conveniently pushing and promoting on the end face of upper jacket.

When using, press the protrusion 17 on the upper jacket 2, spring 4 is squeezed, and upper and lower sheath is drawn close relatively, and cutter head exposes outside the through hole 7 of lower jacket, can carry out cutting action; After finishing using, unclamp and push, under the effect of spring, upper and lower sheath relative separation is opened a segment distance, and cutter head is protected again.So no matter the utility model in working order or off working state all is very safe, and owing to need certain external force to press just and can use when using, so, also can not cause danger because of playing unintentionally for child.

Embodiment 2

Safety cutter head among the embodiment 1 also forms rectangular overlap 61 on left and right the ora terminalis of the projection 6 of its lower jacket 3; Safety cutter head is installed on the base of tool 13 of ruler shape, and scale is carved with on the base of tool 13 both sides, and the base of tool also can adopt other form that needs certainly; The centre of the base of tool 13 has groove 14, the width of width lower jacket 3 projections 6 of groove 14, and overlap 61 colludes on the base that is located at groove 14, and Safety cutter head can slide at the base of tool 13 upper edge grooves 14.

The base of tool 13 two ends are fixed on the two ends of base 15; Base of tool termination side forms the lateral column that the bottom has block, has the lateral column hole on the base 15 two ends correspondence positions; The centre position of base of tool two ends also is provided with spring eye, and the corresponding position of base forms spring stack, and the spring lower end is enclosed within on the spring stack, and remainder is implanted in the spring eye of the base of tool; The lateral column of base of tool two ends side is buckled in the lateral column hole on the base; Base 15 also has narrow thin cutter groove 16 corresponding to the position of cutter head.

When non-working condition, spring makes between the base and the base of tool and maintains a certain distance, and the retaining of the block on the base of tool lateral column is fixed together the base of tool and base in the top in base lateral column hole, is unlikely to throw off; During use, with paper wait for cut article insert place between the base of tool and the base after, press upper jacket 2, cutter head exposes, and the spring between the base of tool and the base also is squeezed under the effect of this pressure simultaneously, paper is pushed down, the slip Safety cutter head, cutter head will be opened paper cutting, owing to offer the cutter groove of admitting cutter head on the base, so cutter head can not drawn bluntly when cutting, the service life of cutter head is longer.

Claims

1, a kind of Safety cutter head, comprise blade (1), it is characterized in that blade (1) is clamped on upper jacket (2), cutter head exposes outside the upper jacket (2), the following lower jacket (3) that can protect cutter head that also is provided with of upper jacket (2), described lower jacket (3) is buckled on the upper jacket (2), also is provided with spring (4) between the upper and lower sheath.

2, Safety cutter head according to claim 1, the cross section that it is characterized in that described upper jacket (2) are " protruding " fonts, and blade (1) is clamped in the protrusion piece (5) that is molded over upper jacket central authorities; The shape of lower jacket (3) " protruding " font that matches with upper jacket (2), the projection (6) in the middle of it has through hole (7), and protrusion piece (5) inserting of upper jacket (2) is in the through hole (7) of lower jacket (3) projection (6).

3, Safety cutter head according to claim 2, the protrusion piece (5) that it is characterized in that described upper jacket (2) comprises two parts, the one, be molded directly within the stator (51) on the upper jacket, the one, be buckled in the activity template (52) on the stator (51), blade (1) is fitted in and is clamped on the activity template (52) between stator (51) and the activity template (52).

4, Safety cutter head according to claim 3 is characterized in that having the hole on described blade (1) and the stator (51), forms on the activity template and the corresponding projection in this hole (21).

5, Safety cutter head according to claim 2, the both sides that it is characterized in that described upper jacket (2) protrusion piece (5) form the side muscle (18) that the bottom has block (8), the forward and backward side of lower jacket (3) projection has side opening (9), the side muscle (18) of upper jacket (2) is buckled on the side opening (9) of lower jacket (3), limits the maximum displacement that spring (4) ejects lower jacket (3) by block (8).

6, Safety cutter head according to claim 5 is characterized in that between described side muscle (18) and the stator (51) space (10) being arranged.

7, Safety cutter head according to claim 2 is characterized in that the both sides of described upper jacket (2) protrusion piece (5) form projection (11), and an end of spring (4) is fixed on the projection (11); The spring hole (12) that the receivability spring other end is arranged on the correspondence position that lower jacket (3) cooperates with it.

8,, it is characterized in that forming overlap (61) on left and right the bottom edge of projection (6) of described lower jacket (3) according to the described arbitrary Safety cutter head of claim 1～7.

9, Safety cutter head according to claim 8, it is characterized in that described Safety cutter head below be provided with a base of tool (13), have groove (14) on the base of tool (13), the overlap (61) on the lower jacket (3) colludes on the base that is located at this groove, and Safety cutter head can move along groove (14).

10, Safety cutter head according to claim 9, it is characterized in that the described base of tool (13) two ends are fixed on the two ends of base (15), base of tool termination side forms the lateral column that the bottom has block, have the lateral column hole on the correspondence position of base (15) two ends, the lateral column of base of tool two ends side is buckled in the lateral column hole on the base; The centre position of base of tool two ends also forms spring eye, and the corresponding position of base forms spring stack, and spring is installed in therebetween; Base (15) also has narrow thin cutter groove (16) corresponding to the position of cutter head.