CN200981239Y

CN200981239Y - Length limited telescopic knife

Info

Publication number: CN200981239Y
Application number: CN 200620163835
Authority: CN
Inventors: 余祖胜
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-12-13
Filing date: 2006-12-13
Publication date: 2007-11-28
Anticipated expiration: 2016-12-13

Abstract

The utility model relates to an extension knife with limited length which belongs to the daily knife tool particularly used for cutting, paper shearing and pencil sharpening. The extension knife comprises an outer hand handle, a blade sheath fixed inside the outer hand handle, a blade capable of extension in the sliding groove of the blade sheath, and a blade pushing handle, the blade sheath extended out of the outer hand handle is a knife protection end of the blade sheath whose top end is provided with a blocking piece limiting the extended length of the knife, the width of the knife protection end is smaller than that of the blade with the side close to the sliding groove provided with a notch of at least one blade breaking line of the completely exposed blade. The extension knife with limited length has the advantages of higher safety, reliable use and breaking and hurting resistance due to the inappropriate operation of the blade beside the advantages of the prior art of convenient use, hand handle capable of repeated use and replaceable blade.

Description

A kind of flexible cutter of limited length

Technical field

The utility model relates to a kind of flexible cutter of limited length, belongs to daily cutter, is specially adapted to cutting, cuts a sheet of paper and sharpen a pencil.

Background technology

The flexible cutter that has a kind of its blade in the chute of blade cover, to release, to draw in the prior art, but blade is except that standing part, and all the other can all be released, and all is exposed to outside the blade cover, because blade has sharp blade and sharp front tip, accidentally hurts sb.'s feelings easily.Particularly, because of blade is a metal, its intensity height, the lawless person can utilize the cutter of this structure to injure other people, therefore, carries and flexible cutter easy to use this, and what have bans use of, and the restriction that has is used.Though this its blade of flexible cutter itself is an integral body, and some folding fracture line are arranged on it, can one joint one save land and fracture, be the last period the edge of a knife with after blunt, it can being fractureed gives up goes, and uses next second section again, the 3rd section ... guarantee that the edge of a knife is sharp all the time, use up the blade that more renews again until all blades, but the flexible cutter of this kind is because very thin, and the folding fracture line is arranged on the side, easy improper fractureing when using accidentally, even the part ejection is hurted sb.'s feelings.Based on reasons such as above-mentioned safety, make such flexible cutter from widely used reality, progressively be forced to withdraw from the market, this is a loss to the manufacturer and the public undoubtedly.

Summary of the invention

The purpose of this utility model is: for overcoming the shortcoming of existing flexible cutter, provide a kind of blade in use its exposed portions serve be subjected to the protection of blade cover and the flexible cutter of restriction extension elongation.

The technical solution of the utility model is: the flexible cutter of described a kind of limited length, and it comprises outdoor handle and a blade cover that is fixed in the outdoor handle, the blade that energy stretches in the chute of blade cover also has blade to advance handle; The blade cover stretch out outside the outdoor handle for blade cover protect the cutter end, there is the blade limiting block of a restriction blade extension elongation on this top of protecting the cutter end; Protect the width of the width of cutter end less than blade, it has the breach of at least one blade folding fracture line that can all expose blade by the side that chute is arranged.

Further technical scheme is:

The blade limiting block of the above is " L " shape baffle plate.

Above-mentioned blade limiting block is " U " shape hook.

The cutter end that protects of above-mentioned blade limiting block and blade cover is an integral body, is to be converted into by protecting the cutter end, or is welded.

An end relative with protecting the cutter end of above-mentioned blade cover has one to prevent the bonnet that is connected with outdoor handle that blade is deviate from.

Above-mentioned bonnet and outdoor handle be connected to interlocking.

Technological merit of the present utility model and effect are, except that the advantage and effect of the handle of a knife easy to use, reusable with existing flexible cutter, changeable blade, also have safer, use difficult advantage and the technique effect that fractures or hurt sb.'s feelings because of misoperation of reliable, blade.

Description of drawings

Fig. 1 is the flexible cutter front elevational schematic (the blade limiting block is " L " shape baffle plate) of a kind of limited length of the utility model;

Fig. 2 is that the A of Fig. 1 is to the view partial enlarged drawing;

Fig. 3 is the partial schematic diagram of " U " shape hook for the blade limiting block;

Fig. 4 is that the B of Fig. 3 is to the view partial enlarged drawing.

The name of Reference numeral correspondence is called among the figure: the 1-outdoor handle, and 2-blade cover, 2 '-protect the cutter end, the 3-blade, 4-blade limiting block, 5-blade folding fracture line, the 6-breach, the 7-bonnet, the 8-blade advances handle, and the 9-blade advances the handle pilot pin.

The specific embodiment

Shown in Fig. 1-4, the flexible cutter of described a kind of limited length of the present utility model, it has an outdoor handle 1 and 2, one energy of blade cover flexible blade 3 in the chute of blade cover 2 that is fixed in the outdoor handle 1, also has blade to advance handle 8; Outdoor handle 1 is plastics, also can be wooden, can also be metal; Blade cover 2 is for metal sheet is stamped to form, and the centre is a chute; Blade folding fracture line 5 is arranged on the blade 3, be for the front end blade with after pure, prolong blade folding fracture line 5 fracture use after sharp part; Blade cover 2 stretch out outside the outdoor handle 1 for blade overlap 2 protect cutter end 2 ', promptly protect blade, avoid in use because of excessive the fractureing of exerting oneself; There is the blade limiting block 4 of a restriction blade 3 extension elongations on this top of protecting cutter end 2 '; Protect the width of the width of cutter end 2 ' less than blade 3, normally oblique, i.e. inswept, rear end and blade cover 2 are convenient to blade and can be normally exposed work with wide; Protecting cutter end 2 ' has the breach 6 of one or two the blade broken line 5 that can all expose blade 3 by the side that chute is arranged; The described blade limiting block 4 of Fig. 1 embodiment is " L " shape baffle plate; The described blade limiting block 4 of Fig. 3 embodiment is " U " shape hook, and its advantage is " L " shape baffle plate relatively, and 3 two side surface direction of blade are strengthened, be protected, and frangibility not, thereby use more reliable and safer; During with " U " shape hook-type blade limiting block,, then the blade front end to be withdrawed from " U " shape hook, be beneficial to the operation of snap blade when fractureing with pure front end blade; Described blade limiting block 4 is an integral body with the cutter end 2 ' that protects of blade cover 2, is to be converted into by protecting cutter end 2 ', also can be welded, and then be other technical scheme; An end relative with protecting cutter end 2 ' of described blade cover 2 has one to prevent blade 3 bonnets 7 that are connected with outdoor handle 1 that deviate from; The interlocking that is connected to of described bonnet 7 and outdoor handle 1 promptly can be dismantled, so that renew blade; Described blade advances has blade to advance handle pilot pin 9 on the handle 8, promptly blade stretches out the back by these blade propelling handle pilot pin 9 location and fixing.

Claims

1, a kind of flexible cutter of limited length, it comprises outdoor handle (1) and a blade cover (2) that is fixed in the outdoor handle (1), the blade (3) that energy stretches in the chute of blade cover (2) also has blade to advance handle (8); It is characterized in that: blade cover (2) stretch out outside the outdoor handle (1) for blade cover (2) protect cutter end (2 '), there is the blade limiting block (4) of restriction blade (a 3) extension elongation on this top of protecting cutter end (2 '); Protect the width of the width of cutter end (2 ') less than blade (3), it has the breach (6) of at least one blade broken line (5) that can all expose blade (3) by the side that chute is arranged.

2, the flexible cutter of a kind of limited length according to claim 1 is characterized in that, described blade limiting block (4) is " L " shape baffle plate.

3, the flexible cutter of a kind of limited length according to claim 1 is characterized in that, described blade limiting block (4) is " U " shape hook.

According to the flexible cutter of claim 1 or 2 or 3 described a kind of limited length, it is characterized in that 4, described blade limiting block (4) is an integral body with the cutter end (2 ') that protects of blade cover (2), is to be converted into by protecting cutter end (2 '), or is welded.

5, the flexible cutter of a kind of limited length according to claim 1 is characterized in that, an end relative with protecting cutter end (2 ') of described blade cover (2) has one to prevent the bonnet (7) that is connected with outdoor handle (1) that blade (3) is deviate from.

6, the flexible cutter of a kind of limited length according to claim 5 is characterized in that, described bonnet (7) and outdoor handle (1) be connected to interlocking.