CN202846541U

CN202846541U - Utility knife

Info

Publication number: CN202846541U
Application number: CN 201220510619
Authority: CN
Inventors: 王爱国
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-09-29
Filing date: 2012-09-29
Publication date: 2013-04-03
Anticipated expiration: 2022-09-29

Abstract

The utility model discloses a utility knife which comprises an outer shell, a knife rest capable of sliding is arranged in the outer shell, and an opening for stretching of a blade is arranged at a head portion of the outer shell. The utility knife is characterized in that a locking piece for locking the blade is arranged on the knife rest, a corresponding blade exchanging switch for opening the locking piece is arranged on the shell body, and a knife spare groove is formed in a position corresponding to the blade on the shell body when the knife rest is in a complete retraction mode. A fixing block for fixing a spare blade and corresponding to a clamp opening in the spare blade is arranged in the knife spare groove, a knife spare cover is arranged at the outer side of the knife spare groove, and a spring piece abutting against the spare blade is arranged on the inner wall of the knife spare covet so that the spare blade has the trend of facing inwards all the time and abutting against the knife rest, and continuous popping is achieved. The utility knife is simple in structure, convenient to assemble, capable of achieving continuous popping, and meanwhile capable of performing gear locating according to the requirement for stretching length of the blade in time of use.

Description

A kind of cutter

Technical field

The utility model relates to a kind of technical field of cutter, but a kind of cutter of running fire specifically.

Background technology

Cutter is a kind of common hand tools, is commonly used to cut paper, leather, plastic sheet or hardboard etc.Existing cutter kind is a lot, for more allowing blade replacement is convenient, the a lot of cutters that occur on the market have the function of standby cutter, be that 99243187.5 Chinese patent " a kind of cutter " is comprised of the tool rest that band blade, mobile button, cutter lock are installed on the housing such as the patent No., described housing connects into integral body by upper casing, lower casing and consists of, and also is connected with standby cutter box in the upper and lower shell.Promote mobile button during use, blade is stretched out outside the housing, pin tool rest with the cutter lock and just can use.If change blade, press the hidden discount on the standby cutter box, to release standby cutter box, take out blade, the screw of outwarding winding is opened upper casing, changes.This complicated structure, more during allowing blade replacement, the screw that also needs to outward winding just can carry out, can not automatically change, tool changing operation is cumbersome, can not running fire, and do not have shift function, can not position by the needs of blade collapsing length when using, therefore structurally also need further to improve.

Summary of the invention

Technical problem to be solved in the utility model is to provide a kind of cutter simple in structure, easy to assembly for the above-mentioned state of the art, not only has the rapid changing knife function, and can regulate use by the needs of blade collapsing length when using.

The utility model solves the problems of the technologies described above the technical scheme that adopts: a kind of cutter, comprise shell, be provided with slidably knife rest in the shell, the head of shell is provided with for the flexible opening of blade, described knife rest is located in the cavity of shell slidably, knife rest is provided with a push button with the trend of popping up, the upper edge of described shell is provided with the groove that pushes away of being convenient to the push button slip, it is characterized in that: described knife rest is provided with the lock dog for the locking blade, housing is provided with the corresponding allowing blade replacement switch that is used for opening lock dog, the position that is fully retracted the blade under the state corresponding to knife rest on the described housing offers a standby cutter groove, standby cutter groove is provided be used for the fixedly fixed block of spare blade corresponding with the bayonet socket on the spare blade, the outside of standby cutter groove is provided with standby cutter lid, the inwall of standby cutter lid is provided with the spring leaf that offsets with spare blade, makes spare blade have inwardly to offset with knife rest all the time and realizes the automatically trend of replacing.

As improvement, described knife rest is magnetic knife rest, the front of knife rest forms for the suction cutter groove of placing blade, be provided with a mount pad that can supply lock dog to insert in the upper end of inhaling the cutter groove corresponding to the position of the bayonet socket of blade, mount pad is provided with projection, described lock dog is provided with the through hole corresponding with projection, the outside portion of lock dog is provided with the projection that matches with the bayonet socket of blade, described lock dog places mount pad by being fixed of through hole and projection, between the inboard of lock dog and mount pad, be provided with the lock dog spring, lock dog is outwards had all the time and the trend of insert retention.

As improvement, the upper front end of described shell has one slotted eye is installed, described allowing blade replacement switch places by pin slotted eye is installed, when knife rest slides into outermost, inner end pin and the lock dog of described allowing blade replacement switch just in time offset, under the tool changing state, press the allowing blade replacement switch, lock dog overcomes the inwardly activity of elastic force of lock dog spring, the projection in its outside separates with the bayonet socket of blade, meanwhile, described spare blade moves inward the disengaging fixed block, enters to inhale and realize in the cutter groove automatically changing under the effect of spring leaf.

As improvement, described shell is to be involuted by loam cake and base, the cavity that the involutory rear formation of loam cake and base can supply knife rest to insert and slide, and can be for pushing away the groove that pushes away of turning round slip, being provided with some groups at the inwall that pushes away groove can be for the gear groove of push button location, the sidepiece of described push button is provided with the card base that cooperates the location with this gear groove, the inboard, upper end of described knife rest is provided with can be for the jack that pushes away the lower end turned round and insert, and between the bottom of push button and jack, be provided with a support spring, the trend that push button is had pop up all the time.Push button is located at by knife rest and is pushed away in the groove like this, and is with movable knife rack to slide along pushing away groove, cooperate with described gear groove by card base simultaneously to position, thereby the flexible and gear of realizing blade is located.

Improve again, described standby cutter groove is opened in the front portion of loam cake, but the incense cutter that is provided with a front opening that covers in the standby cutter groove outside covers the chute of inserting, the downside of chute has a draw-in groove, the position that described standby cutter covers corresponding to draw-in groove is provided with a standby cutter lid switch, described standby cutter lid places in the chute, locks with cooperating with loam cake of draw-in groove by standby cutter lid switch.

Improve again, described standby cutter lid adopts plastic rubber shaping spare, cover at standby cutter and to offer a mounting hole that is used for installing standby cutter lid switch, the lower end of described standby cutter lid switch forms the buckle that matches with described draw-in groove, described standby cutter lid switch can be limited in the mounting hole up and downly, and between the upper end of mounting hole and standby cutter lid switch, be supported with a spring, make standby cutter lid switch have the trend that moves downward all the time with the draw-in groove locking.

Further improve, the inboard of described chute reaches up and down, and inwall is provided with some slots, described standby cutter lid switch is provided with corresponding cutting, and described standby cutter lid switch places chute by transplanting a cutting with cooperating of slot, and locks with cooperating of draw-in groove by standby cutter lid switch.

Further improve, described gear groove is three～four, is opened in respectively on the top inwall of base and loam cake, and forms the guide rail that can supply knife rest to slide at the inwall of base.

Further improve, the afterbody inwall of described base is provided with a joint pin again, and the afterbody of described loam cake is provided with corresponding counterbore, be connected by screw fixing, after described base and loam cake are involutory above afterbody formation one hanging hole that can be used for hanging.

Another improves, the improvement of standby cutter lid open-close ways, thus the utility model has the advantage of that product does not exist standby cutter lid automatically to open or drop in falling and causes blade to drop out the generation of this problem.

At last, above front end, be provided with blade after described loam cake and base are involutory and protect part, be coated with plastic sheath in the outside, rear end.

Compared with prior art, the utility model has the advantage of: easy to use, only need press and promote forward push button can be with movable knife rack to slide forward, be pull-in on simultaneously blade on the knife rest also along with shell is stretched out in slip, when the gear groove is arrived in the push button activity, can position by the needs of blade collapsing length when using, when needing more allowing blade replacement, can be with under the blade fast fetching as long as press the allowing blade replacement switch, the spare blade in the simultaneously standby cutter groove enters to inhale automatically realizes automatic quick-replaceable in the cutter groove.The utility model is simple in structure, easy to assembly, not only has the running fire function, and can carry out the gear location by the needs of blade collapsing length when using.

Description of drawings

Fig. 1 is STRUCTURE DECOMPOSITION schematic diagram of the present utility model;

Fig. 2 is STRUCTURE DECOMPOSITION schematic diagram of the present utility model;

Fig. 3 is surface structure schematic diagram of the present utility model.

The specific embodiment

Embodiment is described in further detail the utility model below in conjunction with accompanying drawing.

As shown in the figure, a kind of cutter, comprise shell, be located at the knife rest 3 in the shell, blade 5, spare blade 6, push away turn round 8 and standby cutter groove cover the critical pieces such as 4, shell 16 is that the loam cake 1 by aluminium die casting involutes with base 2, case head after loam cake 1 and base 2 are involutory forms for the flexible opening 17 of blade 5, forming on upper edge can be for turning round 8 cavitys that push away groove 2.1 and can supply knife rest 3 to insert and slide that slide for pushing away, inwall at cavity forms the guide rail 2.3 that can supply knife rest 3 to slide, being provided with some groups at the inwall that pushes away groove 2.1 can be for four groups of gear groove 2.2 of push button 8 location, the sidepiece of push button 8 is provided with the card base 8.1 that cooperates the location with this gear groove 2.2, knife rest 3 is magnetic knife rest, the front of knife rest 3 forms for the suction cutter groove 3.1 of placing blade 5, the inboard, upper end of knife rest 3 is provided with and can turns round the jack 3.2 that 8 lower end is inserted for pushing away, and between the bottom of push button 8 and jack 3.2, be provided with a support spring, make push button 8 have the trend that pops up all the time, push button 8 is located at by knife rest 3 and is pushed away in the groove 2.1, and band movable knife rack 3 slides along pushing away groove 2.1, cooperate with gear groove 2.2 by card base 8.1 simultaneously to position, thereby realize the flexible of blade 5 and gear location; Be provided with a mount pad 3.3 that can supply lock dog 9 to insert in the upper end of inhaling cutter groove 3.1 corresponding to the position of the bayonet socket of blade 5, mount pad 3.3 is provided with projection 3.4, lock dog 9 is provided with the through hole 9.1 corresponding with projection 3.4, the outside portion of lock dog 9 is provided with the projection 9.2 that matches with the bayonet socket of blade 5, lock dog 9 places mount pad 3.3 by through hole 9.1 and being fixed of projection 3.4, between the inboard of lock dog 9 and mount pad 3.3, be provided with lock dog spring 14, make lock dog 9 outwards have all the time the trend of locking with blade 5; Upper front end at loam cake 1 has an installation slotted eye 1.5, one allowing blade replacement switch 10 places by pin 10.1 slotted eye 1.5 is installed, when knife rest 3 slides into the outermost of shell 16, inner end pin 10.1 and the lock dog 9 of allowing blade replacement switch 10 just in time offset, when needing tool changing, press allowing blade replacement switch 10, lock dog 9 overcomes the inwardly activity of elastic force of lock dog spring 14, the projection 9.2 in its outside separates with the bayonet socket of blade 5, the opening 17 of blade 5 from shell can be taken off; Offer a standby cutter groove 1.1 in the position that is fully retracted the suction cutter groove 3.1 under the state corresponding to knife rest 3 on the loam cake 1, the shape of standby cutter groove 1.1 is consistent with blade 5 shapes, be provided with 6 spare blades 6 in the standby cutter groove 1.1, standby cutter groove 1.1 is provided be used for the fixedly fixed block 1.6 of spare blade 6 corresponding with the bayonet socket on the spare blade 6, but the loam cake 1 in standby cutter groove 1.1 outsides is provided with incense cutter lid 4 chutes of inserting 1.2 of a front opening, the downside of chute 1.2 has a draw-in groove 1.3, the inboard of chute 1.2 reaches up and down, and inwall is provided with some slots 1.4, position corresponding to draw-in groove 1.3 on the standby cutter lid 4 is provided with a standby cutter lid switch 11, and the cutting 4.2 corresponding with slot 1.4, standby cutter lid 4 4.2 places chute 1.2 with cooperating of slot 1.4 by transplanting a cutting, and by locking with cooperating of draw-in groove 1.3 for cutter lid switch 11, standby cutter lid 4 adopts improved plastics structural shape, offer a mounting hole 4.1 that is used for installing for cutter lid switch 11 at standby cutter lid 4, the lower end of standby cutter lid switch 11 forms the buckle 11.1 that matches with draw-in groove 1.3, standby cutter lid switch 11 can be limited in the mounting hole 4.1 up and downly, and between the upper end of mounting hole 4.1 and standby cutter lid switch 11, be supported with a spring, make standby cutter lid switch 11 have the trend that moves downward all the time with draw-in groove 1.3 lockings, inwall at standby cutter lid 4 is equipped with a spring leaf 12, this spring leaf 12 offsets with spare blade 6, after blade 5 is changed, innermost that spare blade 6 in the standby cutter groove 1.1 moves inward under the effect of spring leaf 12 and breaks away from fixed block 1.6, enter to inhale and realize in the cutter groove 3.1 automatically changing, obtain the running fire function.

The afterbody inwall of base 2 is provided with a joint pin, the afterbody of loam cake 1 is provided with corresponding counterbore, be connected and fixed by screw 15, base 2 and the loam cake 1 involutory rear hanging hole that can be used for hanging 1.7 that above afterbody, forms, above front end, be provided with blade after base 2 and loam cake 1 are involutory and protect part 13, be coated with plastic sheath 7 in the outside, rear end, base 2 forms some inserted sheets 2.4 with the afterbody outside apposition position of loam cake 1, form corresponding jack 7.1 on the plastic sheath 7, plastic sheath is by being coated on jack 7.1 and cooperating of inserted sheet 2.4 afterbody of shell, and is provided with some Z-Correct bump mapping Z-correct of being convenient to hold at the outer surface of plastic sheath 7.

During work, only need press and promote forward push button 8 can be with movable knife rack 3 to front slide, be pull-in on simultaneously blade 5 on the knife rest 3 also along with to front slide and stretch out shell, when gear groove 2.2 is arrived in push button 8 activities, can position by the needs of blade 5 collapsing lengths when using, when needing more allowing blade replacement 5, then push away forward and turn round 8 to outermost, press simultaneously allowing blade replacement switch 10, so that the lock dog 9 on allowing blade replacement switch 10 and the knife rest 3 offsets, lock dog 9 overcomes the inwardly activity of elastic force of lock dog spring 14 under the effect of allowing blade replacement switch 10, latch-release with blade 5, blade can be taken off, rear promotion be pushed away turn round 8, knife rest 3 resets, spare blade 6 in the standby cutter groove 1.1 inwardly is adsorbed in the cutter groove 3.1 under the effect of spring leaf 12, and with knife rest 3 on lock dog 9 locking, realize running fire, be exactly automatically that spare blade is hyperphoric on knife rest 3.

Claims

1. cutter, comprise shell, be provided with slidably knife rest in the shell, the head of shell is provided with for the flexible opening of blade, described knife rest is located in the cavity of shell slidably, knife rest is provided with a push button with the trend of popping up, the upper edge of described shell is provided with the groove that pushes away of being convenient to the push button slip, it is characterized in that: described knife rest is provided with the lock dog for the locking blade, housing is provided with the corresponding allowing blade replacement switch that is used for opening lock dog, the position that is fully retracted the blade under the state corresponding to knife rest on the described housing offers a standby cutter groove, standby cutter groove is provided be used for the fixedly fixed block of spare blade corresponding with the bayonet socket on the spare blade, the outside of standby cutter groove is provided with standby cutter lid, the inwall of standby cutter lid is provided with the spring leaf that offsets with spare blade, makes spare blade have inwardly to offset with knife rest all the time and realizes the automatically trend of replacing.

2. cutter according to claim 1, it is characterized in that described knife rest is magnetic knife rest, the front of knife rest forms for the suction cutter groove of placing blade, be provided with a mount pad that can supply lock dog to insert in the upper end of inhaling the cutter groove corresponding to the position of the bayonet socket of blade, mount pad is provided with projection, described lock dog is provided with the through hole corresponding with projection, the outside portion of lock dog is provided with the projection that matches with the bayonet socket of blade, described lock dog places mount pad by being fixed of through hole and projection, between the inboard of lock dog and mount pad, be provided with the lock dog spring, lock dog is outwards had all the time and the trend of insert retention.

3. cutter according to claim 2, the upper front end that it is characterized in that described shell has an installation slotted eye, described allowing blade replacement switch places by pin slotted eye is installed, when knife rest slides into outermost, inner end pin and the lock dog of described allowing blade replacement switch just in time offset, under the tool changing state, press the allowing blade replacement switch, lock dog overcomes the inwardly activity of elastic force of lock dog spring, the projection in its outside separates with the bayonet socket of blade, meanwhile, described spare blade moves inward the disengaging fixed block, enters to inhale and realize in the cutter groove automatically changing under the effect of spring leaf.

4. cutter according to claim 1, it is characterized in that described shell is to be involuted by loam cake and base, the cavity that the involutory rear formation of loam cake and base can supply knife rest to insert and slide, and can be for pushing away the groove that pushes away of turning round slip, being provided with some groups at the inwall that pushes away groove can be for the gear groove of push button location, the sidepiece of described push button is provided with the card base that cooperates the location with this gear groove, the inboard, upper end of described knife rest is provided with can be for the jack that pushes away the lower end turned round and insert, and between the bottom of push button and jack, be provided with a support spring, the trend that push button is had pop up all the time.

5. cutter according to claim 4, it is characterized in that described standby cutter groove is opened in the front portion of loam cake, but the incense cutter that is provided with a front opening that covers in the standby cutter groove outside covers the chute of inserting, the downside of chute has a draw-in groove, the position that described standby cutter covers corresponding to draw-in groove is provided with a standby cutter lid switch, described standby cutter lid places in the chute, locks with cooperating with loam cake of draw-in groove by standby cutter lid switch.

6. cutter according to claim 5, it is characterized in that described standby cutter lid adopts plastic rubber shaping spare, cover at standby cutter and to offer a mounting hole that is used for installing standby cutter lid switch, the lower end of described standby cutter lid switch forms the buckle that matches with described draw-in groove, described standby cutter lid switch can be limited in the mounting hole up and downly, and between the upper end of mounting hole and standby cutter lid switch, be supported with a spring, make standby cutter lid switch have the trend that moves downward all the time with the draw-in groove locking.

7. cutter according to claim 6, it is characterized in that the inboard of described chute and up and down inwall be provided with some slots, described standby cutter lid switch is provided with corresponding cutting, described standby cutter lid switch places chute by transplanting a cutting with cooperating of slot, and locks with cooperating of draw-in groove by standby cutter lid switch.

8. cutter according to claim 4 is characterized in that described gear groove is three ~ four, is opened in respectively on the top inwall of base and loam cake, and forms the guide rail that can supply knife rest to slide at the inwall of base.

9. cutter according to claim 4, the afterbody inwall that it is characterized in that described base is provided with a joint pin, the afterbody of described loam cake is provided with corresponding counterbore, be connected by screw fixing, after described base and loam cake are involutory above afterbody formation one hanging hole that can be used for hanging.

10. cutter according to claim 4 is characterized in that described loam cake and base are provided with blade after involutory and protect part above front end, is coated with plastic sheath in the outside, rear end.