CN201186237Y - Improved structure of blade - Google Patents

Abstract

The utility model relates to an improved structure of a paper shredder blade, which is provided with a circular knife face made of thin materials, the periphery of the blade is provided with a saw-tooth shape and a plurality of cutting edges with intervals and sharp protrusions, one side of each cutting edge is provided with a widened and folded L-shaped tangent plane, a plurality of reinforced surfaces with stamping protrusions are arranged on the circular knife face in a ring way, and a shaft sleeve which is formed integrally is connected and arranged on the central shaft hole of the circular knife face; wherein the front end of the shaft sleeve is provided with opposite insertion parts at intervals; the circular knife face shaft hole is annularly provided with opposite butt joint parts; therefore, when in combination, the middle of the blade is not additionally filled with a lantern ring, the blade can be mutually sleeved and tightly leaned on each other in a series of building blocks on the shaft, thereby effectively reducing the cost and the assembly steps, and the combination strength of the cutter can be enhanced by overlapping layers.

Description

Improved structure of the blade

technical field

The utility model relates to an improved structure of a blade, in particular to an improved structure of a shredder blade which is simple to manufacture and easy to assemble, can effectively reduce costs, reduce assembly steps, and increase the combined strength of cutters.

Background technique

Common shredders mainly use cutting methods to destroy confidential or privacy-related file data. Some shredders can even cut credit cards and CDs in addition to printed documents. It is mainly equipped with two parallel rotating knives on a machine body or cylinder, which is composed of a plurality of rotating blades and shaft sleeves interlaced on the two knife shafts. In this way, when the motor is driven to rotate, the two rows of staggered and juxtaposed rotating knives can cut and divide the passing paper, so as to achieve the effect of destroying documents and ensuring confidentiality.

Due to the high practicability and high market demand of confidentiality protection products, many different structures have been developed and patented in the industry.

Such as China Taiwan Province Patent Announcement No. 162616 paper shredder hob improved structure, which is an early existing paper shredder, because of the thicker cutter wheel used inside, the weight of the body will be increased when multiple pieces are connected in series, and its wheel The edge is jagged, and it takes a lot of time and process to manufacture and shape, so the manufacturing cost remains high and the market competitiveness is greatly reduced.

More advanced design such as Chinese Taiwan Province Patent Announcement No. 282697 No. 282697 a kind of cutter structure of paper shredder, although it adopts thin material stamping to produce wider blade technology, still must add collar when its blade is assembled, make Only when they are strung together can they be arranged at equal intervals. Not only does it take a lot of time to assemble, but also because there is a collar made of plastic material in the knife during use, so once it accidentally cuts a hard metal object such as a paper clip, the collar will be damaged. , causing the entire set of tools to loosen and fail to be used.

In short, the internal blade structure design of the existing paper shredders is still not perfect, and there is still much room for improvement.

Contents of the invention

The main purpose of this utility model is to provide an improved structure of the blade to overcome the above-mentioned defects.

In order to achieve the above-mentioned purpose, the utility model discloses an improved structure of a paper shredder blade. The blade has a circular blade surface made of thin material, and its peripheral edge is serrated, and is provided with a plurality of pointed blades at intervals. One side of the blade is connected with a widened and folded L-shaped cut surface, and a plurality of punched and raised reinforcing surfaces are arranged on the circular blade surface, and an integrally formed Shaft sleeve; wherein the front end of the shaft sleeve is provided with spaced mating parts; and the upper ring of the shaft hole on the circular knife surface is provided with a relative butt joint part; in this way, when combining the blades, there is no need to fill in additional collars in the middle of the blades. A series of building blocks can be nested closely together on the shaft, which can effectively reduce costs and reduce assembly steps, and can be stacked layer by layer to strengthen the combined strength of the tool.

Compared with the prior art, the utility model has the beneficial effects that the blade is simple to manufacture and easy to assemble, not only can the thin material be used to produce sufficient strength and the required width of the blade, but also the blade is directly provided with an integrally formed bushing. The above-mentioned shaft sleeve and the adjacent knife face are equipped with a relatively strengthened combination design, so that the blades can be nested closely together in a series of building blocks on the shaft, which can effectively reduce costs, reduce assembly steps, and increase The effect of tool combination strength.

Description of drawings

Fig. 1 is the front view of the utility model blade;

Fig. 2 is the perspective view of the utility model A, B blade;

Fig. 3 is the plane view of the utility model A, B blade;

Fig. 4 is the schematic diagram that the utility model is assembled;

Fig. 5 is a front view of the blade of another embodiment of the present invention.

Explanation of reference signs: 1-blade; 10-blade; 11-round knife face; 12-blade; 13-cutting surface; 14-reinforcing surface; 15-shaft hole; - butt joint; 2 - shaft.

Detailed ways

The above-mentioned and other technical features and advantages of the present invention will be described in more detail below in conjunction with the accompanying drawings.

Please refer to Fig. 1 to Fig. 5, the improved structure of a paper shredder blade provided by the utility model, its blade 1 has a round knife surface 11 made of thin material, its peripheral edge is serrated, and There are a plurality of pointed blades 12 at intervals, and one side of the blade 12 is provided with a widened and folded L-shaped cut surface 13, and a plurality of punched and raised reinforcing surfaces 14 are arranged on the circular blade surface 11. On the central shaft hole 15 of the knife surface 11, there is an integrally formed spacer sleeve 16;

Wherein the front end of the shaft sleeve 16 is provided with a spaced mating portion 17; and the upper ring of the shaft hole 15 of the circular blade surface 11 is provided with a relative butt joint portion 18; The part 17 can be set as a multi-claw shape.

During implementation, as shown in Fig. 1 and Fig. 2, the blade 1 described herein adopts a half-thick material body, which is folded by punching to have a double-thick blade 12 width. The material thickness of the blade 1 can be between 0.5 mm and 2 mm, and its circular blade surface 11 can be provided with 2 to 6 pointed blades 12 according to different requirements. For example, as shown in FIG. 5 , the upper blade 1 The equiangular distribution of the circumference of the blade is provided with 3 blades 12, (the remaining ones are similarly deduced, and will not be repeated).

In this way, as shown in Fig. 1 and Fig. 2, the manufacture of the blade 1 is simple, and a wider blade 11 can be made from a thin material, which not only can effectively reduce the material cost, but also the blade 12 can be made thin because of the thin material. It is also sharp, so that it can be cut more smoothly, and the edge of the blade 1 is also provided with an integrally formed shaft sleeve 16, which can make the assembly easier and save the existing collar, which can reduce the assembly time. Steps to effectively reduce labor costs.

In addition, as shown in Figure 4, when the blades 1 are connected in series on the shaft 2, they can be aligned and combined with the insertion part 17 and the butt joint part 18, and a series of building blocks are nested closely together and overlapped layer by layer to strengthen the tool. Combination strength.

Please refer to Fig. 2 to Fig. 4, the blade 1 mentioned in practice can be divided into two types, A and B, in which

A. The sleeve 16 provided on the blade 1 can replace the existing collar as the span interval of the blade 1. The sleeve 16 is located on the opposite side of the raised reinforcing surface 14, and its length is due to the insertion part 17. Therefore, it is slightly larger than the width of the two blades 12;

And the axle sleeve 16 that B blade 10 is provided with is as parallel connection, and its axle sleeve 16 is located at the same side of convex reinforcement surface 14, and its length is the same because it is provided with the inserting portion 17 so is slightly larger than single blade 12 the width;

Please refer to shown in Fig. 4, described A, B blade 1, 10 can protrude reinforcement surface 14 when assembling as abutting two pairs and mutually merge, and with the claw-shaped pair of bushing 16 that B blade 10 establishes The insertion part 17 extends into the shaft hole 15 of the A blade 1 and is tightly combined with the docking part 18, and then is inserted into the shaft 2 in two groups. When connecting in series, the position can be adjusted step by step according to different rotation angles. Then insert (not shown).

Wherein each group of A, B blades 1, 10 is connected in series, the shaft sleeve 16 provided by A blade 1 can be used as a spacer, and the front end claw-shaped mating part 17 is inserted into the shaft hole of the front group B blade 1 The butt joints 18 provided on the 15 are tightly combined, so that when the A and B blades 1 and 10 are assembled on the shaft 2, there is no need to fill in the existing collars, so the assembly steps can be effectively reduced and the labor cost can be reduced.

Moreover, the material of the whole tool is exactly the same after combination, and there will be no mixed plastic rings. When the middle A and B blades 1 and 10 are joined together, a series of building blocks can be nested closely together, and the combined strength of the tool can be strengthened by overlapping layers. , the product is more durable and can prolong the service life, and avoid the situation where the existing structure is easily damaged due to cutting of hard metal objects such as paper clips.

To sum up, this case is not only truly innovative in terms of space type, but also can enhance the function of existing items. It should have fully met the statutory requirements for a utility model patent of novelty and advancement and filed an application in accordance with the law.

The above description is only illustrative, rather than restrictive, of the present invention. Those of ordinary skill in the art understand that many modifications and changes can be made without departing from the spirit and scope defined by the following appended claims. Or equivalent, but all will fall within the protection domain of the present utility model.

Claims (5)

1. kneader bar structure-improved, it is characterized in that: it comprises:

One blade, it has one to approach the dise knife face that material is made, its periphery is provided with the plural number prominent blade of point at interval, described blade is provided with on one side widens the L shaped tangent plane that is converted into, on the dise knife face, be equipped with the reinforcement face of plural stamped bumps, and on dise knife face central shaft hole and be provided with integrally formed axle sleeve;

The front end of wherein said axle sleeve be provided with at interval to inserting portion; And be equipped with relative docking section on the dise knife over glaze hole;

Described blade a succession of building block system on axle overlaps mutually closely and leans on, and overlaps layer by layer to strengthen the combined strength of cutter.

2. kneader bar structure-improved according to claim 1 is characterized in that: the set axle sleeve of described blade as span at interval, it is located at the offside of protruding reinforcement face, its length is greater than the width of two blades.

3. kneader bar structure-improved according to claim 1 is characterized in that: the axle sleeve conduct that described blade is set is also tied in succession, and it is located at the homonymy of protruding reinforcement face, and its length is greater than the width of monolithic blade.

4. kneader bar structure-improved according to claim 1, it is characterized in that: the material of described blade is thick in 0.5mm～2mm, the periphery of its dise knife face is established indentation, and the dise knife face is provided with the prominent blade of 2～6 points, and what its axle sleeve front end was set again is multijaw shape to inserting portion.

5. kneader bar structure-improved according to claim 4 is characterized in that: described blade adopts half thick material body, forms blade width through the stubborn folding of punching press.

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