CN101007408A

CN101007408A - Telescopic knife capable of controlling length

Info

Publication number: CN101007408A
Application number: CNA2006101254551A
Authority: CN
Inventors: 余祖胜
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-12-13
Filing date: 2006-12-13
Publication date: 2007-08-01
Anticipated expiration: 2026-12-13
Also published as: WO2008071118A1; CN100586669C

Abstract

The invention involves a telescopic knife which length is controllable and belongs to a daily knife tool, particularly it is suitable to cutting, cutting paper and chamfering pencil. It includes a combined or integral handhold and a knife blade which can extend in the slide groove of handhold and knife blade pushing handle; the part out of handhold is protect knife end, the top of the protect knife end has a knife blade position block which limits the extension length of knife blade.Its advantages are: besides the prior technology advantages of convenient use, reusable handhold and replaceable blade, it also has more advantages of safer, reliable, blade is difficult be broken down or hurt people because of improper operation.

Description

A kind of flexible cutter of controlling length

Technical field

The present invention relates to a kind of flexible cutter of controlling length, belong to daily cutter, be specially adapted to cutting, cut 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 handle, 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 are exposed to outside the handle.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 objective of the invention is to: for overcoming the shortcoming of existing flexible cutter, provide a kind of blade in use its exposed portions serve protected the protection of cutter end and the flexible cutter of restriction extension elongation.

Technical scheme of the present invention is: it comprises combination or whole handle and the blade that energy stretches in the chute of handle, also have blade to advance handle; It is characterized in that: stretch out part outside the handle for protecting the cutter end, there is the blade limiting block of a restriction blade extension elongation on this top of protecting the cutter end.

Further technical scheme is:

The described breach that protects its at least one blade folding fracture line that has a side of chute to have all to expose blade towards handle of cutter end is so that fracture and withdraw from blunt that part of blade.

The described width that protects the width of cutter end less than blade is so that blade exposes and operate as normal.

Described handle is the handle of a combination, and it comprises outdoor handle and a blade cover that is fixed in the outdoor handle; In the chute of this blade cover flexible blade is arranged, also have blade to advance handle; The described cutter end that protects is that the blade cover stretches out a section outside the outdoor handle, and there is the blade limiting block of a restriction blade extension elongation on this top of protecting the cutter end.

Described blade limiting block is " L " shape baffle plate.

Described blade limiting block is " U " shape hook.

The cutter end that protects of the blade cover of described blade limiting block and handle or outdoor handle is an integral body, is to be converted into, or is formed by fixedly connecting by protecting the cutter end.

Technological merit of the present invention and effect are, except that the advantage and effect of the handle 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 a kind of flexible cutter front elevational schematic (blade limiting block be the embodiment of " L " shape baffle plate) of controlling length of handle of the present invention for combination;

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

Fig. 3 is the partial schematic diagram 4 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;

Fig. 5 is whole a kind of flexible cutter front elevational schematic of controlling length for handle of the present invention.

The name of Reference numeral correspondence is called among the figure: the 1-handle, and 1 '-outdoor handle, 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, described a kind of flexible cutter of controlling length of the present invention, it has handle 1 combination, that can also be integral body and the blade 3 that energy stretches in the chute of handle 1, also have blade to advance handle 8; Stretch out part outside the handle 1 for protecting cutter end 2 ', there is the blade limiting block 4 of a restriction blade 3 extension elongations on this top of protecting cutter end 2 '; Protect that cutter end 2 ' has a side of chute to have all to expose blade 3 towards handle 1 one, also can be that the breach 6 of two blades folding fracture line 5 is so that fracture and withdraw from blunt that part of blade; 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; The described handle 1 of Fig. 1, Fig. 2 is the handle of a combination, and it is made up of an outdoor handle 1 ' and a blade cover 2 that is fixed in the outdoor handle 1 '; In the chute of blade cover 2 flexible blade 3 is arranged, also have blade to advance handle 8; Blade cover 2 stretch out outside the outdoor handle 1 ' for protecting 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 '; Described outdoor handle 1 ' is plastics, also can be metal; Blade cover 2 is for metal sheet is stamped to form, and as shown in Figure 1 and Figure 2, described blade limiting block 4 is " L " shape baffle plate; Be another embodiment as shown in Figure 3, Figure 4, described blade limiting block 4 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; Described blade limiting block 4 is an integral body with the cutter end 2 ' that protects of handle 1 or blade cover 2, is to be converted into by protecting cutter end 2 ', or is formed by fixedly connecting, and describedly is fixedly connected as welding; When using " U " shape hook-type blade limiting block,, then to be beneficial to the operation of snap blade with withdrawing from " U " shape hook behind the blade front end if will fracture with blunt front end blade; When handle 1 is combination handle, blade that outdoor handle 1 ' is embedded in cover 2 with protect cutter end 2 ' and be-bulk metal member; The relative end of described blade 3 its points of a knife has one to prevent blade 3 bonnets 7 that are connected with handle 1 that deviate from; The interlocking that is connected to of described bonnet 7 and 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, and blade advances the handle pilot pin 9 and the positioning tooth of locating hole or chute side to locate.

Claims

1, a kind of flexible cutter of controlling length, it comprises combination or whole handle (1) and the blade (3) that energy stretches in the chute of handle (1), also have blade to advance handle (8); It is characterized in that: stretch out part outside the handle (1) for protecting 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 ').

2, a kind of flexible cutter of controlling length according to claim 1 is characterized in that, the described breach (6) that protects its at least one blade folding fracture line (5) that has a side of chute to have all to expose blade (3) towards handle of cutter end (2 ').

3, a kind of flexible cutter of controlling length according to claim 1 is characterized in that, the described width that protects the width of cutter end (2 ') less than blade (3).

4, a kind of flexible cutter of controlling length according to claim 1 is characterized in that described handle (1) is the handle of a combination, and it comprises outdoor handle (1 ') and a blade cover (2) that is fixed in the outdoor handle (1 '); Flexible blade (3) is arranged in the chute of blade cover (2), also have blade to advance handle (8); Describedly protect the cutter end (2 ' is that blade cover (2) stretches out a section outside the outdoor handle (1 '), and there is the blade limiting block (4) of restriction blade (a 3) extension elongation on this top of protecting cutter end (2 ').

5, according to claim 1 or 2 or 3 or 4 described a kind of flexible cuttves of controlling length, it is characterized in that described blade limiting block (4) is " L " shape baffle plate.

6, according to claim 1 or 2 or 3 or 4 described a kind of flexible cuttves of controlling length, it is characterized in that described blade limiting block (4) is " U " shape hook.

7, according to claim 1 or 2 or 3 or 4 described a kind of flexible cuttves of controlling length, it is characterized in that, described blade limiting block (4) is an integral body with the cutter end (2 ') that protects of the blade cover (2) of handle (1) or outdoor handle (1 '), is to be converted into by protecting cutter end (2 '), or is formed by fixedly connecting.