CN203460195U

CN203460195U - Art knife

Info

Publication number: CN203460195U
Application number: CN201320565001.1U
Authority: CN
Inventors: 王爱国
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-09-11
Filing date: 2013-09-11
Publication date: 2014-03-05
Anticipated expiration: 2023-09-11

Abstract

An art knife comprises a casing, and is characterized in that the casing adopts a bar-shaped structure with two ends opened, wherein a knife rest and a knife bar are arranged in an inner cavity of the casing; one blade is detachably mounted at the front end of the knife rest and extends out of a front opening in the casing; the rear end of the knife rest is connected with the knife bar; the knife rest and the knife bar are retractably limited in the casing after connected; and a locking mechanism used for locking the blade is arranged at the front end of the knife rest. The knife rest and the knife bar are arranged in the casing, a knife head is detachably mounted on the knife rest through the locking mechanism, and when the blade is required to be changed, all that is required is to press the tail of the knife bar by a hand and extend the knife rest forwards to unlock the knife head, so that the blade is changed easily. The art knife is simple in structure and novel and attractive in appearance, the blade can be changed conveniently, and assembly and disassembly are convenient simultaneously.

Description

Cutter

Technical field

The utility model relates to cutter technical field, specifically a kind of novelty simple in structure, tool changing cutter easily.

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, has the cutter that can load and unload fast blade, also has the cutter with standby cutter function, although these cutters are easy to use, related parts are more, and complex structure assembles also more difficult.

The existing patent No. is the Chinese patent < < pen type cutter > > of CN200520057876.6, comprise tool rest and blade, in tool rest, have groove, blade inserts in groove, side at described tool rest has through hole, corresponding lead to the hole site is provided with cage knob, and the end of tool rest also connects a penholder.This cutter structure is simpler, can cut the careful position of article, but because blade is to be bolted on tool rest, while needing more allowing blade replacement, need to first take off bolt, this just makes tool changing very inconvenient, because do not having under the prerequisite of instrument, be difficult to bolt to take off, and multi-pass operation meeting causes wearing and tearing to the screw of tool rest, be unfavorable for the fixing of blade.

Summary of the invention

Technical problem to be solved in the utility model is that a kind of simple and reasonable, cutter that can facilitate tool changing is provided for the above-mentioned state of the art.

The utility model solves the problems of the technologies described above adopted technical scheme: a kind of cutter, comprise housing, it is characterized in that: the rod-like structure that described housing is both ends open, in the inner chamber of housing, be provided with knife rest and knife bar, one blade is releasably arranged on the front end of knife rest and stretches out in the open front of housing, the rear end of knife rest is connected with knife bar, and after knife rest is connected with knife bar, telescopically is spacing in housing, at the front end of knife rest, is provided with for locking the locking mechanism of blade.

As improvement, described locking mechanism is: the front center of knife rest offers the slot inserting for the rear end of blade, the rear end of blade is provided with a through hole, the side of slot is provided with the through hole connecting with this through hole, the outside of knife rest is provided with an elastic collet, the inner chamber wall of the outer wall of this elastic collet and housing offsets, make elastic collet inside all the time, through hole through knife rest, insert in the through hole of blade rear end, realize the locking with blade, the front end of the inner chamber of housing is provided with an extension diameter section, when knife rest stretches out forward, the front end of described elastic collet drops in extension diameter section, elasticity is opened the locking of rear and blade and has just been removed.

Preferably, described elastic collet is L-shaped, and one end of elastic collet is embedded on the outer surface of knife rest, and the other end is bending and is plugged in described through hole.

Improve, the front end head of described knife rest is the conical surface of outside hole enlargement again, and open front place of described inner chamber is shaped to corresponding bellmouth, and described knife rest is undertaken spacing by the head conical surface and coordinating of bellmouth.

Further improve, the rear end of described knife rest is cylindric, thereafter end face is provided with internal thread hole, described knife bar is shaped to the two-period form rod-like structure that the little back segment of external diameter leading portion is large, front end at knife bar forms the external screw thread corresponding with described internal thread, the front end of knife bar and knife rest are threaded connection fixing, and the rear end of knife bar is stretched out housing and formed hand outward by portion.

Further improve, the inner chamber of described housing forms the hole enlargement hole of mating with the back segment external diameter of knife bar corresponding to the position of described knife bar, at the leading portion of knife rest, be equipped with one and make knife bar have the spring of the trend ejecting outward all the time, this spring supporting is between the step surface in the middle part of the step surface in hole enlargement hole and knife bar.

As improvement, described locking mechanism is: the front center of knife rest offers the slot inserting for the rear end of blade, the rear end of blade is provided with a through hole, the side of slot is provided with the through hole connecting with this through hole, the outside of knife rest is provided with an elastic, between elastic end and the stepped hole of knife rest, be supported with back-moving spring, the inner chamber wall of the outer end of this elastic and housing offsets, make elastic inside all the time, through hole through knife rest, insert in the through hole of blade rear end, realize the locking with blade, the front end of the inner chamber of housing is provided with an extension diameter section, when knife rest stretches out forward, the outer end of described elastic is dropped in extension diameter section, after flicking under action of reset spring, just removed with the locking of blade.

Improve, the outer surface of described housing forms the male and fomale(M&F) of the arc of being convenient to hold again.

Finally, the front end sleeve of described housing is provided with a block for the protection of cutter head.

Compared with prior art, the utility model has the advantage of: knife rest and knife bar are all arranged in housing, and cutter head is releasably arranged on knife rest by locking mechanism, while needing tool changing, only need press with hand the afterbody of knife bar, knife rest is toward protracting, by the latch-release of cutter head, can realize light tool changing.The utility model is simple and reasonable for structure, can be easily allowing blade replacement more, handling are all very convenient simultaneously.

Accompanying drawing explanation

Fig. 1 is the stereogram of the utility model embodiment;

Fig. 2 is the STRUCTURE DECOMPOSITION figure of Fig. 1;

Fig. 3 is the structure cutaway view of Fig. 1;

Fig. 4 is the partial enlarged drawing in I region in Fig. 3;

Fig. 5 is the partial enlarged drawing of another examples of implementation.

The specific embodiment

Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.

Examples of implementation 1

As shown in Fig. 1～4, the cutter of the present embodiment, comprises housing 1, is arranged on knife rest 3 and knife bar 4 in housing 1; The rod-like structure that housing 1 is both ends open, the outer surface of housing 1 forms the male and fomale(M&F) 14 of the arc of being convenient to hold, knife rest 3 and knife bar 4 are arranged in the inner chamber of housing 1, blade 2 is releasably arranged on the front end of knife rest 3 and stretches out in the open front of housing 1, front end sleeve at housing 1 is provided with a block for the protection of cutter head 2, the rear end of knife rest 3 is connected with knife bar 4, front end at knife rest 3 is provided with for locking the locking mechanism of blade 2, after knife rest 3 is connected with knife bar 4, telescopically is spacing in housing 1, and by the flexible replacing that realizes blade 2 of knife rest 3;

Locking mechanism is: the front center of knife rest 3 offers the slot 31 inserting for the rear end of blade 2, the rear end of blade 2 is provided with a through hole 21, the both sides of slot 31 are provided with the through hole 32 connecting with this through hole 21, the outside of knife rest 3 is provided with an elastic collet 6, this elastic collet 6 is L-shaped, one end of elastic collet 6 is embedded on the outer surface of knife rest 3, the other end is bending and is plugged in described through hole 32, the inner chamber wall of the outer wall of elastic collet 6 and housing 1 offsets, make elastic collet 6 inside all the time, through hole 32 through knife rest, insert in the through hole 21 of blade rear end, present and blade 2 locking trend, the front end of the inner chamber of housing 1 is provided with an extension diameter section 11, when knife rest 3 stretches out forward, described elastic collet 6 front ends drop in extension diameter section 11, elasticity is opened the locking of rear and blade 2 and has just been removed, at this moment just blade 2 can be taken out and carries out tool changing, the leading portion back of elastic collet 6 and extension diameter section 11 marginal existence inclined-planes coordinate, be convenient to its alive moving, the front end head of knife rest 3 is the conical surface 33 of outside hole enlargement, open front place of housing 1 inner chamber is shaped to corresponding bellmouth 13, knife rest 3 is undertaken spacing by the head conical surface 33 and coordinating of bellmouth, knife rest 3 can inside not contracted, the rear end of knife rest 3 is cylindric, thereafter end face is provided with internal thread hole 34, knife bar 4 is shaped to the two-period form rod-like structure that the little back segment of external diameter leading portion is large, front end at knife bar 4 forms the external screw thread corresponding with internal thread 34 41, the front end of knife bar 4 and knife rest 3 are threaded connection fixing, and the outer formation hand of housing 1 is stretched out by portion in the rear end of knife bar 4,

The inner chamber of housing 1 forms the hole enlargement hole 12 of mating with the back segment external diameter of knife bar 4 corresponding to the position of knife bar 4, leading portion at knife rest 3 is equipped with a spring 5, this spring 5 is supported between the step surface 15 in hole enlargement hole 12 and the step surface 42 at knife bar 4 middle parts, make knife bar 4 have the trend ejecting outward all the time, knife rest 4 has spacing interior by the trend of blade 2 lockings at housing 1 all the time too like this;

During work, only need press the afterbody of knife bar 4, the active force band movable knife rack 3 that makes knife bar 4 can pay spring 5 stretches out housing 1 forward, now, elastic collet 6 front ends drop in extension diameter section 11, elasticity is opened the locking of rear and blade 2 and has just been removed, blade 2 can be taken off, carry out tool changing, after loosing one's grip, knife bar 4 moves after under the effect of spring 5, knife rest 3 retraction housings 1, the inner chamber wall of the outer wall of elastic collet 6 and housing 1 offsets, make elastic collet 6 again inside, through after the through hole 32 of knife rest 3, insert in the through hole 21 of blade rear end, realize the locking with blade 2, thereby blade 2 is pinned again.

Examples of implementation 2

As schematically shown in Figure 5, locking mechanism is revised as: the front center of knife rest 3 offers the slot 31 inserting for the rear end of blade, the rear end of blade 2 is provided with a through hole 21, the two sided of slot 31 is provided with and connects with this through hole 21 and corresponding through hole 32, the outside of knife rest 3 is provided with an elastic 6a, between elastic 6a end and the stepped hole of knife rest, be supported with back-moving spring 7a, when the outer end of elastic 6a and the inner chamber wall of housing 1 offset, make elastic inside all the time, through hole 32 through knife rest, insert in the through hole 21 of blade 2 rear ends, realize the locking with blade, the front end of the inner chamber of housing 1 is provided with an extension diameter section, when knife rest stretches out forward, the outer end of elastic 6a is dropped in extension diameter section, after flicking under back-moving spring 7a effect, just removed with the locking of blade, other and examples of implementation 1 are similar.

Claims

1. a cutter, comprise housing, it is characterized in that: the rod-like structure that described housing is both ends open, in the inner chamber of housing, be provided with knife rest and knife bar, one blade is releasably arranged on the front end of knife rest and stretches out in the open front of housing, the rear end of knife rest is connected with knife bar, and after knife rest is connected with knife bar, telescopically is spacing in housing, at the front end of knife rest, is provided with for locking the locking mechanism of blade.

2. cutter according to claim 1, it is characterized in that: described locking mechanism is: the front center of knife rest offers the slot inserting for the rear end of blade, the rear end of blade is provided with a through hole, the side of slot is provided with the through hole connecting with this through hole, the outside of knife rest is provided with an elastic collet, the inner chamber wall of the outer wall of this elastic collet and housing offsets, make elastic collet inside all the time, through hole through knife rest, insert in the through hole of blade rear end, realize the locking with blade, the front end of the inner chamber of housing is provided with an extension diameter section, when knife rest stretches out forward, the front end of described elastic collet drops in extension diameter section, elasticity is opened the locking of rear and blade and has just been removed.

3. cutter according to claim 2, is characterized in that: described elastic collet is L-shaped, and one end of elastic collet is embedded on the outer surface of knife rest, and the other end is bending and is plugged in described through hole.

4. cutter according to claim 2, is characterized in that: the front end head of described knife rest is the conical surface of outside hole enlargement, and open front place of described inner chamber is shaped to corresponding bellmouth, and described knife rest is undertaken spacing by the head conical surface and coordinating of bellmouth.

5. cutter according to claim 4, it is characterized in that: the rear end of described knife rest is cylindric, thereafter end face is provided with internal thread hole, described knife bar is shaped to the two-period form rod-like structure that the little back segment of external diameter leading portion is large, front end at knife bar forms the external screw thread corresponding with described internal thread, the front end of knife bar and knife rest are threaded connection fixing, and the rear end of knife bar is stretched out housing and formed hand outward by portion.

6. cutter according to claim 5, it is characterized in that: the inner chamber of described housing forms the hole enlargement hole of mating with the back segment external diameter of knife bar corresponding to the position of described knife bar, at the leading portion of knife rest, be equipped with one and make knife bar have the spring of the trend ejecting outward all the time, this spring supporting is between the step surface in the middle part of the step surface in hole enlargement hole and knife bar.

7. cutter according to claim 1, it is characterized in that: described locking mechanism is: the front center of knife rest offers the slot inserting for the rear end of blade, the rear end of blade is provided with a through hole, the side of slot is provided with the through hole connecting with this through hole, the outside of knife rest is provided with an elastic, between elastic end and the stepped hole of knife rest, be supported with back-moving spring, the inner chamber wall of the outer end of this elastic and housing offsets, make elastic inside all the time, through hole through knife rest, insert in the through hole of blade rear end, realize the locking with blade, the front end of the inner chamber of housing is provided with an extension diameter section, when knife rest stretches out forward, the outer end of described elastic is dropped in extension diameter section, after flicking under action of reset spring, just removed with the locking of blade.

8. according to the cutter described in the arbitrary claim of claim 1 to 7, it is characterized in that: the outer surface of described housing forms the male and fomale(M&F) of the arc of being convenient to hold.

9. according to the cutter described in the arbitrary claim of claim 1 to 7, it is characterized in that: the front end sleeve of described housing is provided with a block for the protection of cutter head.