CN201552045U

CN201552045U - Blade of paper shredder

Info

Publication number: CN201552045U
Application number: CN2009202386364U
Authority: CN
Inventors: 林清标
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-11-06
Filing date: 2009-11-06
Publication date: 2010-08-18
Anticipated expiration: 2019-11-06

Abstract

The utility model relates to the technical field of paper shredders, in particular to a blade of the paper shredder. The blade comprises a blade main body with a through hole matched with a knife shaft being formed in the middle, a tool nose protruding outwards for cutting off paper is arranged on the outer edge of the main body, a cutting surface matched with the tool nose of another blade main body is arranged on the outer edge of the main body, and the cutting surface adopts a projection or a sunken part. When the blade of the paper shredder is used, the tool nose of one of the two knife tackles is not matched with the outer edge of the other blade, but rather with the cutting surface on the projection or the sunken part on the blade. Due to the deformation of the projection or the sunken part, the angle of the cutting surface matched with the tool nose is changed, and the cutting angle of the tool nose is expanded, therefore, not only the cutting ratio can be improved to reduce both the rotary moment required for the cutting and the power consumption, but also smooth operation of the entire knife tackle can be ensured.

Description

A kind of blade of shredder

Technical field:

The utility model relates to the shredder technical field, refers in particular to a kind of blade of shredder.

Background technology:

See Fig. 1, this is a cutter group schematic diagram in the present shredder, and it generally includes two

cutter shafts

61,62, and even respectively fixed interval has

blade

63,64 on each cutter shaft 61,62.

Blade

63,64 on two cutter groups rotates in opposite directions, and the certain intersectional region of interlaced formation between the two.During work, paper is the paper cutting shredded paper bar of bar shaped by entering between two cutter groups between the

blade

63,64 under the motion of blade.

In order to improve the confidentiality of file, on blade, increased one or more point of a knife 631,641, when two

blades

63,64 turned round relatively, the point of a knife 631 on the blade 63 will intersect with the outer edge surface blade (being arc surface) of blade 64, thereby the paper that will be positioned at this position is pricked disconnected.In like manner, the point of a knife 641 on the blade 64 will intersect with the outer edge surface blade (being arc surface) of blade 63, thereby the paper that will be positioned at this position is pricked disconnected.After adopting this structure, can with broken paper slip prick disconnected, thereby file is crushed into paper scrap, improve the confidentiality of shredder.

But, there are the following problems when reality is used at present this shredder with point of a knife: we can see by Fig. 1, when the point of a knife 641 on the blade 64 intersects at the outer edge surface with blade 63, the angle a angle that penetrates of point of a knife 641 is not vertically or near vertical angle to enter, but a less angle of inclination penetrates, i.e. angle too small between the outer edge surface tangent line that intersects of point of a knife 641 rake faces and blade 63.We know that when point of a knife 641 vertically penetrated paper, used power minimum was not because can produce component in the other direction.And that this penetrates angle a is too small, and its active force will be bigger.May cause like this:

1, the disconnected rate of the bundle of paper is not high;

2, it is bigger to prick the used active force of disconnected paper, thereby causes the power of shredder actuator to increase, and consumes too much electric energy, does not meet environmental requirement;

3, in the time of owing to shredded paper, paper can produce fold, and this can further influence the disconnected rate of bundle of shredder, also can continue to strengthen the power consumption of motor simultaneously,, may cause that centre distance widens between two

blades

63,64 if situation is serious, cause the blade dislocation, damage point of a knife.

The utility model content:

Technical problem to be solved in the utility model overcomes the deficiencies in the prior art exactly, and a kind of kneader bar of pricking disconnected rate that improves is provided.

For solving the problems of the technologies described above, the utility model has adopted following technical scheme: this kneader bar comprises vane body, offer the through hole that cooperates with cutter shaft in the middle of this main body, be provided with outside protrusion, be used to prick the point of a knife that disconnected institute shredded paper is opened in the main body outer rim, the outer rim of described main body is provided with the bundle section that cooperates with point of a knife on another vane body.

The quantity of described bundle section is identical with the quantity of point of a knife.

Form a protuberance that outwards protrudes on the described main body outer rim, this protuberance is most advanced and sophisticated moulding, and the one side constitutes above-mentioned bundle section.

Form a depressed part that inwardly concaves on the described main body outer rim, a side of this depressed part constitutes above-mentioned bundle section.

Operation principle of the present utility model is: during two groups of cutter group work; the point of a knife of the blade on one of them cutter group does not cooperate with outer rim on the another one blade; but with blade on protuberance or the bundle section on the depressed part cooperate; because the distortion of this protuberance or depressed part; it will cooperate bundle section angle to change with point of a knife; make the angle that penetrates of point of a knife increase; so not only can improve the disconnected rate of pricking; order is pricked the disconnected employed torque of paper and is reduced; reduce power consumption, and can protect the smooth working of whole cutter group.

Description of drawings:

Fig. 1 is the cutter group work schematic diagram of existing shredder;

Fig. 2 is the structural representation of the utility model embodiment one;

Fig. 3 is the work schematic diagram of the utility model embodiment one;

Fig. 4 is the structural representation of the utility model embodiment two;

Fig. 5 is the work schematic diagram of the utility model embodiment two.

The specific embodiment:

Below in conjunction with accompanying drawing this full mold is further described:

See Fig. 2, this is embodiment one of the present utility model, the blade 11 of this shredder comprises: vane body 10, offer the through hole 2 that cooperates with cutter shaft in the middle of this main body 10, and be provided with outside protrusion, be used to prick point of a knife 3 and the protuberance 4 that disconnected institute shredded paper is opened in main body 10 outer rims.

In the present embodiment, the quantity of the protuberance 4 that is provided with on the vane body 10 is identical with the quantity of point of a knife 3, is two.It will cooperatively interact with point of a knife, the protuberance on another blade, paper is pricked disconnected.Certainly, can as required point of a knife 3 and protuberance 4 quantity be changed, for example be provided with more than three or four even four.

Protuberance 4 is most advanced and sophisticated moulding in the present embodiment, and it has the bundle section 40 that cooperates with point of a knife on another blade.This bundle section 40 can be the plane, also can be curved surface, does not do concrete restriction, and its effect is exactly the face lifting that will cooperate with point of a knife, makes the angle that penetrates of point of a knife 3 increase.

Point of a knife 3 is a taper with angle of inclination, and the direction of its inclination is the bundle section on another vane body of tendency.

See Fig. 3, this is the present embodiment fundamental diagram.During two groups of cutter group work of this shredder, blade 11 on the two cutter groups and blade 12 are symmetrically distributed, the point of a knife 3 of the blade 11 on one of them cutter group does not cooperate with outer rim (blade) on the another one blade 12, but cooperate with protuberance 41 on this blade 12, because the projection of this protuberance 41, to prick section 40 liftings, and so just make the angle that penetrates of point of a knife 3 increase, to improve the disconnected rate of pricking.

Generally, penetrating angle b can be near 90 degree, to obtain result of use preferably.

After the utility model adopted technique scheme, it so not only can improve the disconnected rate of pricking, and order is pricked the disconnected employed torque of paper and reduced, and reduces power consumption, and can protect the smooth working of whole cutter group.

See Fig. 4, this is that this is embodiment two of the present utility model, the blade 13 of this shredder comprises equally: vane body 100, offer the through holes 2 that cooperate with cutter shaft in the middle of this main body 100, be provided with outside protrusion, be used to prick the point of a knife 3 that institute's shredded paper opens and inwardly concave the depressed part 5 that is used to cooperate point of a knife 3 of breaking in main body 100 outer rims.

In the present embodiment, the quantity of the depressed part 5 that is provided with on the vane body 100 is identical with the quantity of point of a knife 3, is two.It will cooperatively interact the paper bundle is disconnected with point of a knife and the protuberance on another blade.

Depressed part 5 has the bundle section 50 that cooperates with point of a knife on another blade in the present embodiment, and this pricks section 50 is an inclined-plane of depressed part 5.This bundle section 50 can be the plane, also can be curved surface, does not do concrete restriction, and its effect is exactly that the bundle section 50 that will cooperate with point of a knife 3 sinks, and makes the angle that penetrates of point of a knife 3 increase.

See Fig. 5, this is the fundamental diagram of present embodiment.During two groups of cutter group work of this shredder, blade on the two cutter groups is symmetrically distributed, the point of a knife 3 of the blade 13 on one of them cutter group does not cooperate with outer rim (blade) on the another one blade 14, but cooperate with depressed part 51 on the blade 14, because being recessed into of this depressed part 51, make and prick section 50 sinkings, so just make the angle that penetrates of point of a knife 3 increase, to improve the disconnected rate of pricking.

In like manner, after the utility model adopts technique scheme, can improve the disconnected rate of pricking equally, order is pricked the disconnected employed torque of paper and is reduced, and reduces power consumption, and can protect the smooth working of whole cutter group.

Certainly, the above only is embodiment of the present utility model, be not to limit the utility model scope, all equivalences of doing according to the described structure of the utility model claim, feature and principle change or modify, and all should be included in the utility model claim.

Claims

1. the blade of a shredder, comprise: vane body, offer the through hole that cooperates with cutter shaft in the middle of this main body, be provided with outside protrusion, be used to prick the point of a knife that disconnected institute shredded paper is opened in the main body outer rim, it is characterized in that: the outer rim of described main body is provided with the bundle section that cooperates with point of a knife on another vane body.

2. the blade of a kind of shredder according to claim 1, it is characterized in that: the quantity of described bundle section is identical with the quantity of point of a knife.

3. the blade of a kind of shredder according to claim 2 is characterized in that: form a protuberance that outwards protrudes on the described main body outer rim, this protuberance is most advanced and sophisticated moulding, and the one side constitutes above-mentioned bundle section.

4. the blade of a kind of shredder according to claim 2 is characterized in that: form a depressed part that inwardly concaves on the described main body outer rim, the above-mentioned bundle section of side formation of this depressed part.