CN201179654Y

CN201179654Y - Cutter knife

Info

Publication number: CN201179654Y
Application number: CNU2008200564875U
Authority: CN
Inventors: 温昊
Original assignee: Shanghai Kunjie Hardware Tool Co Ltd
Current assignee: Shanghai Kunjie Hardware Tool Co Ltd
Priority date: 2008-03-21
Filing date: 2008-03-21
Publication date: 2009-01-14
Anticipated expiration: 2018-03-21

Abstract

The utility model provides a cutting knife, comprising a knife handle, a knife rest, a knife blade and a knife blade extending length adjusting and locking mechanism, wherein the outer side of the knife handle is provided with a flexible rubber block; the knife blade extending length adjusting and locking mechanism comprises a push button, a spring stretching up and down and a spring stretching back and forth; the push button is arranged on the knife rest to drive the knife rest to move back and forth, the spring stretching up and down is arranged between the knife rest and the push bottom, and the spring stretching back and forth is arranged between the rear end of the knife rest and the knife handle. The cutting knife can rapidly come out and adjust the extending length by pushing the push button and forms two gears of automatic locking and delocking. The flexible rubber block on the outer side of the knife handle increases the friction between fingers and the knife handle. The cutting knife has the advantages of simple structure, comfortable and convenient use and high safety factor.

Description

Cutting knife

Technical field

The utility model relates to a kind of instrument, relates in particular to a kind of cutting knife.

Background technology

Traditional cutting knife is divided into fixed, collapsible and telescopic usually, generally is used for cutting paper, cloth, leather etc.But general cutting knife or be that the length of blade is fixing non-adjustable causes the limitation of the scope of application; Be the adjustable length of blade, promptly scalable, but this flexible can not the locking, thereby use inconvenience, also dangerous.

The utility model content

The purpose of this utility model is exactly in order to provide the new structure cutting knife of a kind of adjustable length and sectional locking.

In order to achieve the above object, the utility model has adopted following technical scheme: a kind of cutting knife, comprise handle of a knife, be movably arranged on the knife rest in the handle of a knife and be installed in blade on the knife rest, knife rest can drive blade and slide in handle of a knife and blade is stretched out or take in, be characterized in, also comprise a blade extension elongation adjusting and locking mechanism, this blade extension elongation is regulated and locking mechanism comprises a button push, coil tension spring and an elastic spring about in the of one; Described button push is a T shape structure, and both sides respectively are provided with a slide block that outwards protrudes; Described knife rest is provided with the adaptive T-slot of T shape structure with button push, and button push is inlaid in this T-slot, and coil tension spring is arranged between the bottom land and button push of T-slot up and down; Described handle of a knife be provided with button push on the adaptive slideway of slide block, be provided with the screens groove of the locking that is used to return sword at the tail end of this slideway, the slideway middle part is interval with two upwardly extending locating notches, the size and the slide block on the button push of this locating notch are suitable, and button push pops up location and the locking that forms the blade extension elongation when sliding into its slide block corresponding to locating notch; Described handle of a knife rear portion is provided with a spring base, and the rear end of elastic spring is inlaid in this spring base, and its front end compresses with the rear end of knife rest and links to each other to knife rest generation thrust forward.

Described T shape button push bottom is provided with a spring eye, and the described top of coil tension spring up and down is inlaid in this spring eye.

The both sides of described handle of a knife respectively are inlaid with a soft rubber piece that is used to increase frictional force.

The utility model cutting knife can reach to go out cutter fast and regulate its extension elongation by promoting button push, and can form two grades and automatically lock and release, the soft rubber piece in the handle of a knife outside can increase the frictional force between finger and the handle of a knife, has comfortable, advantage that safety coefficient is high simple in structure, easy to use.

Description of drawings

Fig. 1 is a perspective view of the present utility model;

Fig. 2 is a decomposition texture schematic diagram of the present utility model;

Fig. 3 is the structural representation of the button push in the utility model.

The specific embodiment

Referring to Fig. 1, Fig. 2, Fig. 3, cutting knife of the present utility model comprises that handle of a knife 1, knife rest 2, blade 3 and a blade extension elongation regulate and locking mechanism 4.

Handle of a knife 1 combines by two, wherein be provided with the slideway 11 that supplies knife rest 2 and button push 41 to move forward and backward, be provided with the screens groove 15 of the locking that is used to return sword at the tail end of this slideway, the slideway middle part is interval with two upwardly extending locating notches 12, the size and the slide block on the button push 411 of this locating notch are suitable, respectively be inlaid with a soft rubber piece 13 that is used to increase frictional force in the both sides of handle of a knife, be provided with a spring base 14 at handle of a knife 1 rear portion.

Knife rest 2 is movably arranged in the handle of a knife and can moves forward and backward along chute.Knife rest 2 can drive blade 3 and slide in handle of a knife 1 and blade is stretched out or take in.On knife rest 2, be provided with the T-slot 21 adaptive with the T shape structure of button push 41.

The blade extension elongation is regulated and locking mechanism 4 comprises a button push 41, coil tension spring 42 and an elastic spring 43 about in the of one.Button push 41 is a T shape structure, is provided with above and pushes away tooth, and both sides respectively are provided with a slide block 411 that outwards protrudes, and the bottom is provided with a spring eye 412.Button push 41 is inlaid in the T-slot 21 of knife rest 2, and the top of coil tension spring 42 is inlaid in the spring eye 412 of button push 41 up and down, and the lower end is pressed on the bottom land of T-slot 21.The rear end of elastic spring 43 is inlaid in the spring base 14 at handle of a knife 1 rear portion, and its front end compresses with the rear end of knife rest 2 and links to each other to knife rest generation thrust forward.

The operation principle of cutting knife of the present utility model is, when promotion button push 41 slides into afterbody, button push 41 pops up under the elastic force effect of coil tension spring 42 up and down, and slide block 411 enters in the screens groove 15 and forms locking, and blade 3 took in and was in the safe spare state in the handle of a knife 1 this moment.When promoting button push 41 and slide into slide block 411 on it corresponding to the first road locating notch 12 on the handle of a knife 1, button push 41 pops up under the elastic force effect of coil tension spring 42 up and down, slide block 411 enters this locating notch 12 and forms the locking of first road, and at this moment, the extension elongation of blade 3 is shorter.When promoting button push 41 and slide into slide block 411 on it corresponding to the second road locating notch 12 on the handle of a knife 1, button push 41 pops up under the elastic force effect of coil tension spring 42 up and down again, slide block 411 enters this locating notch 12 and forms the locking of second road, and at this moment, the extension elongation of blade 3 is longer.Can realize two grades of adjustings of the extension elongation of blade 3 thus.The effect of elastic spring 43 is after button push 41 being pressed down the releasing snap close, can automatically the button push 41 and the blade 3 of knife rest 2 and connection thereof be pushed ahead.

Claims

1, a kind of cutting knife, comprise handle of a knife, be movably arranged on the knife rest in the handle of a knife and be installed in blade on the knife rest, knife rest can drive blade and slide in handle of a knife and blade is stretched out or take in, it is characterized in that: also comprise a blade extension elongation adjusting and locking mechanism, this blade extension elongation is regulated and locking mechanism comprises a button push, coil tension spring and an elastic spring about in the of one; Described button push is a T shape structure, and both sides respectively are provided with a slide block that outwards protrudes; Described knife rest is provided with the adaptive T-slot of T shape structure with button push, and button push is inlaid in this T-slot, and coil tension spring is arranged between the bottom land and button push of T-slot up and down; Described handle of a knife be provided with button push on the adaptive slideway of slide block, be provided with the screens groove of the locking that is used to return sword at the tail end of this slideway, the slideway middle part is interval with two upwardly extending locating notches, the size and the slide block on the button push of this locating notch are suitable, and button push pops up location and the locking that forms the blade extension elongation when sliding into its slide block corresponding to locating notch; Described handle of a knife rear portion is provided with a spring base, and the rear end of elastic spring is inlaid in this spring base, and its front end compresses with the rear end of knife rest and links to each other to knife rest generation thrust forward.

2, cutting knife as claimed in claim 1 is characterized in that: described T shape button push bottom is provided with a spring eye, and the described top of coil tension spring up and down is inlaid in this spring eye.

3, cutting knife as claimed in claim 1 is characterized in that: the both sides of described handle of a knife respectively are inlaid with a soft rubber piece that is used to increase frictional force.