Automatic paper shredder

Abstract

The invention discloses an automatic paper shredder which comprises a paper shredder upper cover, a paper shredder lower cover, a first paper box, a second paper box, a paper shredder cover plate, a paper pressing plate, a paper pressing wheel set, a paper rubbing wheel set, a paper inlet, a cutter shaft set, a driving motor, a shell and a wastebin. The paper shredder utilizes the flexible characteristic of paper, combines the characteristic of a single-side paper rubbing roller, utilizes the changed paper length of a bent paper box to shred paper, is very simple and economical, and changes the structure mode of flatly laying the paper of the automatic paper shredder.

Description

[0001] Cross - reference to related applications This application is a divisional application of the patent application with the application number "202011128216.8" (invention name: An automatic shredder) filed on October 20, 2020. Technical field

[0002] The present invention relates to the field of shredders, and particularly to an automatic shredder. Background art

[0003] For the automatic shredders currently on the market, whether it is the structure of two sets of paper feeding rollers symmetrically feeding paper or one set of paper feeding rollers asymmetrically feeding paper, protective walls need to be added at both ends of the paper. Since the overall shape of the machine must accommodate the long side of the paper, the shape is relatively large, and it is impossible to completely compress the paper length and streamline the structure.

[0004] The solution of the present invention is an improvement to the existing shredder aiming at the above problems. Summary of the invention

[0005] In order to overcome the deficiencies in the prior art, the present invention provides an automatic shredder. Utilizing the bendable characteristic of the paper's toughness, combined with the characteristics of a single - side paper feeding roller, it shreds paper by changing the paper length with a bent paper box, which is extremely simple and economical, and changes the flat paper - placing structural mode of the automatic shredder.

[0006] In order to achieve the above - mentioned invention purpose, the technical solution adopted to solve its technical problems is as follows: An automatic shredder, comprising a shredder upper cover, a shredder lower cover, a first paper box, a second paper box, a shredder cover plate, a pressure plate, a paper - pressing wheel group, a paper - feeding wheel group, a paper inlet, a knife shaft group, a driving motor, a housing, and a waste paper bin, wherein: The shredder upper cover is fixedly connected to the shredder lower cover; The first paper box is arranged at one end inside the shredder lower cover; The second paper box is arranged at the other end inside the shredder lower cover and is communicated and combined with the first paper box for accommodating stacked papers to be shredded; The shredder cover plate is pivotally connected to one end of the shredder upper cover for covering or opening the shredder; The pressure plate is fixedly connected to the lower end surface of the shredder cover plate and at least includes a horizontal pressure plate for pressing the stacked papers to be shredded placed on the first paper box when the user closes the shredder cover plate; The paper - pressing wheel group is arranged on one side of the pressure plate and is arranged vertically corresponding to the paper - feeding wheel group; The paper inlet is opened on the first paper box; The cutter shaft group is arranged inside the lower cover of the shredder and is located directly below the paper inlet, and is used for crushing the stacked papers to be shredded; The driving motor is arranged inside the lower cover of the shredder and is electrically connected to the cutter shaft group and the paper feed roller group, and is used for driving the cutter shaft group and the paper feed roller group to operate; The paper feed roller group is arranged inside the lower cover of the shredder and is located on the side of the cutter shaft group away from the second paper cassette, and is used for driving the paper feed roller group to rotate under the drive of the driving motor to rub the lowermost paper of the stacked papers to be shredded above the first paper cassette and move it in the direction of the second paper cassette, and then reverse the movement of the paper under the action of the reaction force of the side wall of the second paper cassette, so that the paper is bent and deformed at the paper inlet and enters the paper inlet downward; The housing is arranged below the lower cover of the shredder and is fixedly connected to the lower cover of the shredder; The waste paper bin is arranged inside the housing and is used for collecting shredded paper scraps.

[0007] Furthermore, it further includes a nail receiving groove, which is recessed at one end of the first paper cassette away from the second paper cassette and is used for collecting the removed staples or paper clips.

[0008] Furthermore, a nail groove shaving plate is arranged at the corner part of the connection between the nail receiving groove and the bottom plane of the first paper cassette.

[0009] Preferably, the first paper cassette and the second paper cassette are integrally formed or separately formed.

[0010] Preferably, when the first paper cassette and the second paper cassette are separately formed, the second paper cassette is respectively connected to the first paper cassette and the upper cover of the shredder by screwing, clamping, riveting or welding.

[0011] Preferably, the sum of the lengths of the first paper cassette and the second paper cassette is equal to the paper length of the papers to be shredded.

[0012] Preferably, the length of the second paper cassette is less than or equal to one half of the paper length.

[0013] Preferably, the length of the second paper cassette is less than or equal to one quarter of the paper length.

[0014] Preferably, the entrance width of the second paper cassette is equal to the width of the first paper cassette.

[0015] Furthermore, the second paper cassette is a conventional paper cassette, a downwardly curved paper cassette or an upwardly curved paper cassette.

[0016] Preferably, when the second paper cassette is a conventional paper cassette, the upper surface of the second paper cassette and the upper surface of the first paper cassette are on the same plane and are horizontally arranged or inclinedly arranged.

[0017] Preferably, the angle between one side wall of the second paper box away from the first paper box and the bottom plane of the first paper box is less than or equal to 90 degrees.

[0018] Furthermore, the pressing paper board further includes a vertical pressing plate. The horizontal pressing plate presses the stacked papers to be shredded against the first paper box, and the vertical pressing plate presses the part of the stacked papers to be shredded close to the nail accommodating groove into the nail accommodating groove.

[0019] Preferably, when the second paper box is a downwardly curved paper box, the downwardly curved paper box is formed by sequentially connecting an upper side wall of the downwardly curved paper box, a paper blocking wall of the downwardly curved paper box, and a lower side wall of the downwardly curved paper box to form a semi-open downwardly curved cavity, and is fixedly connected to the lower cover of the paper shredder and communicated and combined with the first paper box for accommodating the stacked papers to be shredded.

[0020] Preferably, the bottom plane of the first paper box gradually slopes downward from the end away from the downwardly curved paper box to the end close to the downwardly curved paper box.

[0021] Preferably, the angle between the paper blocking wall of the downwardly curved paper box and the bottom plane of the first paper box is less than or equal to 90 degrees.

[0022] Furthermore, at the left and right ends of the lower side wall of the downwardly curved paper box near the paper blocking wall of the downwardly curved paper box, a first nail accommodating box is formed by outward expansion at each end. The folded corner parts at the connections of the left and right first nail accommodating boxes and the lower side wall of the downwardly curved paper box are used to remove staples or paper clips on the lowermost paper of the stacked papers. The two opposite side surfaces inside the left and right first nail accommodating boxes are both open surfaces of the first staple removing part and are communicated with the waste paper bin for removing redundant staples or paper clips.

[0023] Preferably, the upper side wall of the downwardly curved paper box, the paper blocking wall of the downwardly curved paper box, the first nail accommodating box, and the lower side wall of the downwardly curved paper box are integrally formed.

[0024] Furthermore, a first staple removing plate is provided at the folded corner parts at the connections of the left and right first nail accommodating boxes and the lower side wall of the downwardly curved paper box.

[0025] Furthermore, a plurality of first reinforcing ribs are provided between the upper part of the first nail accommodating box and the lower side wall of the downwardly curved paper box.

[0026] Furthermore, a first accommodating cavity is formed on the lower cover of the paper shredder for accommodating the downwardly curved paper box.

[0027] Preferably, when the second paper box is an upwardly curved paper box, the upwardly curved paper box is formed by sequentially connecting an upwardly curved paper box upper side wall, an upwardly curved paper box paper blocking wall, and an upwardly curved paper box lower side wall to form a semi-open upwardly curved cavity, and is fixedly connected to the upper cover of the shredder, and is communicated and combined with the first paper box for accommodating stacked papers to be shredded.

[0028] Preferably, the bottom plane of the first paper box gradually slopes upward from the end far from the upwardly curved paper box to the end close to the upwardly curved paper box.

[0029] Preferably, the included angle between the upwardly curved paper box paper blocking wall and the bottom plane of the first paper box is less than or equal to 90 degrees.

[0030] Furthermore, at the left and right ends of the lower side wall of the upwardly curved paper box, a second nail accommodating box is formed by outward expansion near the upwardly curved paper box paper blocking wall; The folded corner parts at the connection of the left and right second nail accommodating boxes and the lower side wall of the upwardly curved paper box are used to remove staples or paper clips on the bottommost paper of the stacked papers; The two opposite side surfaces on the outer sides of the left and right second nail accommodating boxes are both second staple removing part opening surfaces, and are communicated with the waste paper bin through through holes arranged at two corners of the lower cover of the shredder for removing redundant staples or paper clips.

[0031] Preferably, the upwardly curved paper box upper side wall, the upwardly curved paper box paper blocking wall, the second nail accommodating box, and the upwardly curved paper box lower side wall are integrally formed.

[0032] Furthermore, a second staple removing plate is arranged at the folded corner parts at the connection of the left and right second nail accommodating boxes and the lower side wall of the upwardly curved paper box.

[0033] Furthermore, a plurality of second reinforcing ribs are arranged between the upper part of the second nail accommodating box and the lower side wall of the upwardly curved paper box.

[0034] Furthermore, a second accommodating cavity is opened on the upper cover of the shredder for accommodating the upwardly curved paper box.

[0035] Due to the adoption of the above technical solutions, the present invention has the following advantages and positive effects compared with the prior art: 1. For an automatic shredder of the present invention, the bottom plane of the first paper box is set to be inclined, which is more in line with the usage habits of users and is convenient for users to place stacked papers to be shredded. At the same time, it can reduce the friction between the stacked papers to be shredded, so that the friction is decomposed into horizontal and vertical directions; 2. An automatic shredder according to the present invention can automatically remove staples and / or paper clips, greatly improving the shredding efficiency, saving time, preventing damage to the whole machine caused by staples and / or paper clips, and thus protecting the use of the whole machine and extending its service life. 3. An automatic shredder according to the present invention utilizes the bendable characteristic of the paper's toughness, combines the characteristics of the one-sided paper feeding roller, and shreds the paper with the changed paper length by using the bent paper box, which is extremely simple and economical, changes the flat paper feeding structure mode of the automatic shredder, and has the characteristics of high automation, convenient use, safety and reliability, ingenious design, simple structure, and economic cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative efforts. In the drawings: Figure 1 is the first partial cross-sectional view of an automatic shredder according to the present invention; Figure 2A is the structural schematic diagram of the downward bent paper box installed in the lower cover of the shredder (with the upper cover of the shredder); (The arrow is the paper feeding direction, and the second paper box is the bent paper box) Figure 2B is the structural schematic diagram of an automatic shredder according to the present invention with the upper cover and the pressure plate removed; (The second paper box is a conventional paper box) Figure 3 is the overall cross-sectional view of an automatic shredder according to the present invention; (The arrow is the paper feeding direction) Figure 4 is the structural schematic diagram of the downward bent paper box installed in the lower cover of the shredder (without the upper cover of the shredder) according to the present invention; Figure 5 is the structural exploded view of the downward bent paper box, the upper and lower covers of the shredder according to the present invention; (The arrow is the assembly direction) Figure 6 is the overall structural schematic diagram of the downward bent paper box of an automatic shredder according to the present invention; (The arrow is the paper feeding direction) Figure 7 is the structural schematic diagram of the first accommodating cavity of an automatic shredder according to the present invention; Figure 8 is the second partial cross-sectional view of an automatic shredder according to the present invention; Figure 9 is the overall structural schematic diagram of the upward bent paper box in an automatic shredder according to the present invention; (The arrow is the paper feeding direction) Figure 10 It is a schematic diagram of the installation structure of an upward-bending paper box in an automatic shredder of the present invention; Figure 11 It is a schematic diagram of the moving direction of the shaving nails in an automatic shredder of the present invention; Figure 12 It is a schematic diagram of the structure of the first paper pressing situation of an automatic shredder of the present invention; Figure 13 It is a schematic diagram of the structure of the second paper pressing situation of an automatic shredder of the present invention.

[0037]

Main Symbol Explanation

[0038] The following will clearly and completely describe and discuss the technical solutions in the embodiments of the present invention in conjunction with the drawings of the present invention. Obviously, what is described here is only a part of the examples of the present invention, not all of the examples. All other examples obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the protection scope of the present invention.

[0039] As Figures 1-13 shown, this embodiment discloses an automatic shredder, including a shredder upper cover 1, a shredder lower cover 2, a first paper box 3, a second paper box 4, a shredder cover plate 5, a paper pressing plate 6, a paper pressing wheel group 7, a paper feeding wheel group 8, a paper inlet 9, a knife shaft group 10, a driving motor 11, a housing (not shown) and a waste paper bin (not shown), wherein: The shredder upper cover 1 is fixedly connected to the shredder lower cover 2; The first paper box 3 is arranged at one end inside the shredder lower cover 2; The second paper box 4 is arranged at the other end inside the shredder lower cover 2 and is connected and combined with the first paper box 3 for accommodating stacked papers to be shredded; The shredder cover plate 5 is pivotally connected to one end of the shredder upper cover 1 and is used to cover or open the shredder; The paper pressing plate 6 is fixedly connected to the lower end surface of the shredder cover plate 5 and at least includes a horizontal pressing plate 28, which is used to press the stacked papers to be shredded placed on the first paper tray 3 when the user closes the shredder cover plate 5; The paper pressing wheel group 7 is arranged on one side of the paper pressing plate 6 and is arranged corresponding to the paper feeding wheel group 8 up and down in the vertical direction; in this embodiment, the number of both the paper pressing wheel group 7 and the paper feeding wheel group 8 is 2, and this number is not limited. A larger or smaller number of the paper pressing wheel group 7 and the paper feeding wheel group 8 are within the protection scope of this embodiment.

[0040] The paper inlet 9 is opened on the first paper tray 3; The cutter shaft group 10 is arranged inside the shredder lower cover 2 and is located directly below the paper inlet 9, and is used to crush the stacked papers to be shredded; The driving motor 11 is arranged inside the shredder lower cover 2 and is electrically connected to the cutter shaft group 10 and the paper feeding wheel group 8, and is used to drive the cutter shaft group 10 and the paper feeding wheel group 8 to operate; The paper feeding wheel group 8 is arranged inside the shredder lower cover 2 and is located on the side of the cutter shaft group 10 away from the second paper tray 4. It is used to drive the paper feeding wheel group 8 to rotate under the drive of the driving motor 11 to rub the lowermost paper of the stacked papers to be shredded above the first paper tray 3 and move it in the direction of the second paper tray 4. Then, under the action of the reaction force of the side wall of the second paper tray 4, the paper moves in the reverse direction, and then bends and deforms downward at the paper inlet 9 and enters the paper inlet 9. In this embodiment, the number of the paper feeding wheel group 8 is two. In actual design, there is no limit to the number of the paper feeding wheel group 8, and it can be three or more. In addition, the design concept of the single-side paper feeding wheel group 8 simplifies the paper feeding structure and saves economic costs.

[0041] The housing is arranged below the shredder lower cover 2 and is fixedly connected to the shredder lower cover 2; The waste paper bin is arranged inside the housing and is used to collect shredded paper scraps.

[0042] As Figure 12 shown, the automatic shredder further includes a staple groove 19, which is recessed at one end of the first paper tray 3 away from the second paper tray 4 and is used to collect the removed staples or paper clips. A staple groove shaving plate is arranged at the corner part of the connection between the staple groove 19 and the bottom plane of the first paper tray 3.

[0043] Preferably, the first paper box 3 and the second paper box 4 are integrally formed or separately formed. When the first paper box 3 and the second paper box 4 are separately formed, the first paper box 3 and the second paper box 4 are respectively connected to the upper cover 1 of the shredder by one or a combination of fixing connection methods such as screwing, clamping, riveting or welding. As long as the effect of fixed connection is achieved, it is within the protection scope of this case.

[0044] Preferably, the sum of the lengths of the first paper box 3 and the second paper box 4 is equal to the paper length of the paper to be shredded. The paper length is defaulted to the length of the long side of the paper. In this embodiment, the length of the second paper box 4 is less than or equal to half of the paper length, which can minimize the length of the first paper box 3 and thus greatly reduce the volume of the shredder. In another embodiment, the length of the second paper box 4 is less than or equal to one-fourth of the paper length. In this case, the paper pressing effect of the pressing plate 6 is better than the previous case, and the paper feeding effect is also better. However, correspondingly, the volume of the shredder is larger than the previous case.

[0045] Preferably, the entrance width of the second paper box 4 is equal to the width of the first paper box 3, which can effectively prevent the left and right movement of the stacked papers to be shredded above the first paper box 3.

[0046] Further, the second paper box 4 is a conventional paper box, a downward-bent paper box or an upward-bent paper box, specifically divided into: In one embodiment, when the second paper box 4 is a conventional paper box (such as Figure 2B ), the upper surface of the second paper box 4 and the upper surface of the first paper box 3 are on the same plane, and are horizontally arranged or inclined. Preferably, the included angle C between the side wall of the second paper box 4 far from the first paper box 3 and the bottom plane of the first paper box 3 is less than or equal to 90 degrees. See Figure 12 and 13 .

[0047] Further in Figure 13 ), the pressing plate 6 further includes a vertical pressing plate 29. The horizontal pressing plate 28 presses the stacked papers to be shredded onto the first paper box 3, and the vertical pressing plate 29 presses the part of the stacked papers close to the nail receiving groove 19 into the nail receiving groove 19.

[0048] In another embodiment, when the second paper box 4 is a downward-bent paper box (such as Figure 1 , 2A , 3 and 6), the downward-bent paper box is formed by sequentially connecting a downward-bent paper box upper side wall 13, a downward-bent paper box paper blocking wall 14 and a downward-bent paper box lower side wall 15 to form a semi-open downward-bent cavity, and is fixedly connected to the lower cover 2 of the shredder and communicated with the first paper box 3 for accommodating the stacked papers to be shredded (the case of a single sheet of paper is also applicable).

[0049] Preferably, the bottom plane of the first paper box 3 slopes gradually downward from the end far away from the downward-bent paper box to the end close to the downward-bent paper box, which is convenient for the user to place stacked papers to be shredded and can reduce the friction between the stacked papers. In actual operation, the bottom plane of the first paper box 3 can also be set to be horizontal, but it is not the most convenient for placing papers.

[0050] In this embodiment, the length of the downward-bent paper box is less than or equal to one-half of the paper length, which can minimize the length of the first paper box 3 and thus greatly reduce the volume of the shredder. In another embodiment, the length of the downward-bent paper box is less than or equal to one-fourth of the paper length. In this case, the paper pressing effect of the pressing plate 6 is better than the previous case, and the paper feeding effect is also better. However, correspondingly, the volume of the shredder is larger than the previous case.

[0051] Preferably, the included angle A between the paper blocking wall 14 of the downward-bent paper box and the bottom plane of the first paper box 3 is less than or equal to 90 degrees. Refer to Figure 1 .

[0052] Figure 6 In [[reference]], at the left and right ends of the lower side wall 15 of the downward-bent paper box near the paper blocking wall 14 of the downward-bent paper box, a first nail box 16 is formed by expanding outward; at the folded corner part where the two left and right first nail boxes 16 are connected to the lower side wall 15 of the downward-bent paper box, it is used to remove staples or paper clips on the bottommost paper of the stacked papers; the two opposite side surfaces inside the two left and right first nail boxes 16 are both the opening surfaces 17 of the first nail shaving part and are communicated with the waste paper bin, which is used to remove the redundant staples or paper clips.

[0053] Preferably, the upper side wall 13 of the downward-bent paper box, the paper blocking wall 14 of the downward-bent paper box, the first nail box 16 and the lower side wall 15 of the downward-bent paper box are integrally formed.

[0054] Furthermore, a first nail shaving plate (not shown) is provided at the folded corner part where the two left and right first nail boxes 16 are connected to the lower side wall 15 of the downward-bent paper box. Preferably, the first nail shaving plate is made of a metal material. In this embodiment, the first nail shaving plate made of a metal material can effectively increase the nail shaving efficiency and extend its service life.

[0055] Further referring to Figure 6 , a plurality of first reinforcing ribs 18 are provided between the upper part of the first nail box 16 and the lower side wall 15 of the downward-bent paper box. In actual operation, frequent nail shaving leads to accelerated wear between the two. The setting of the first reinforcing ribs 18 can effectively extend the service life of the downward-bent paper box.

[0056] Figure 5In it, a first accommodating cavity 12 is formed on the lower cover 2 of the paper shredder for accommodating the downward-bending paper box.

[0057] In another embodiment, when the second paper box 4 is an upward-bending paper box (such as Figures 8-10 ), the upward-bending paper box is formed by sequentially connecting an upward-bending paper box upper side wall 21, an upward-bending paper box paper blocking wall 22, and an upward-bending paper box lower side wall 23 to form a semi-open upward-bending cavity, and is fixedly connected to the upper cover 1 of the paper shredder, and is communicated and combined with the first paper box 3 for accommodating stacked papers to be shredded (the case of a single sheet of paper is also applicable).

[0058] Preferably, the bottom plane of the first paper box 3 gradually slopes upward from the end far away from the upward-bending paper box to the end close to the upward-bending paper box, which is convenient for the user to place the stacked papers to be shredded and can reduce the friction between the stacked papers. In actual operation, the bottom plane of the first paper box 3 can also be set to be horizontal, but it is not the most convenient for placing papers.

[0059] Preferably, the length of the upward-bending paper box is less than or equal to one-fourth of the paper length. In this embodiment, the reason why the length of the upward-bending paper box does not adopt the scheme that the length of the downward-bending paper box is less than or equal to one-half of the paper length is that in this embodiment, the upward-bending paper box is arranged in the upper cover 1 of the paper shredder. If the scheme of "the length of the downward-bending paper box is less than or equal to one-half of the paper length" is adopted, it will virtually increase the height of the upper cover 1 of the paper shredder. Considering the factors of reducing the length of the first paper box 3 and the height of the upper cover 1 of the paper shredder, the scheme of "the length of the upward-bending paper box is less than or equal to one-fourth of the paper length" adopted in this embodiment is more appropriate, which can maximize the shortening of the length of the first paper box 3, thereby effectively reducing the volume of the paper shredder. At the same time, it will not make the upper cover 1 of the paper shredder too heavy.

[0060] Preferably, the included angle B between the upward-bending paper box paper blocking wall 22 and the bottom plane of the first paper box 3 is less than or equal to 90 degrees, see Figure 8 .

[0061] Further, at the left and right ends of the lower side wall 23 of the upwardly bent paper box, a second staple box 24 is formed by expanding outwardly near the paper blocking wall 22 of the upwardly bent paper box; at the folded corner portions where the two second staple boxes 24 on the left and right are connected to the lower side wall 23 of the upwardly bent paper box, staples or paper clips on the lowermost sheet of the stacked paper are removed; the two opposite side surfaces on the outer sides of the two second staple boxes 24 on the left and right are both second staple-removing part opening surfaces 25, and are communicated with the waste paper bin through through holes 26 provided at two corners of the lower cover 2 of the shredder, for removing redundant staples or paper clips, as shown in the figure. In this embodiment, the two side surfaces on the inner sides of the two second staple boxes 24 on the left and right are both closed and inclined outwardly, facilitating the staples or paper clips removed to move towards the through holes 26 at two corners of the lower cover 2 of the shredder.

[0062] Preferably, the upper side wall 21 of the upwardly bent paper box, the paper blocking wall 22 of the upwardly bent paper box, the second staple box 24 and the lower side wall 23 of the upwardly bent paper box are integrally formed.

[0063] Further, a second staple-removing plate (not shown) is provided at the folded corner portion where the two second staple boxes 24 on the left and right are connected to the lower side wall 23 of the upwardly bent paper box. Preferably, the second staple-removing plate is made of a metal material. In this embodiment, the second staple-removing plate made of a metal material can effectively increase the staple-removing efficiency and extend its service life.

[0064] For further reference Figure 10 , a plurality of second reinforcing ribs 27 are provided between the upper part of the second staple box 24 and the lower side wall 23 of the upwardly bent paper box. In actual operation, frequent staple removal leads to accelerated wear between the two, and the provision of the second reinforcing ribs 27 can effectively extend the service life of the upwardly bent paper box.

[0065] Further, a second accommodating cavity 20 is provided on the upper cover 1 of the shredder for accommodating the upwardly bent paper box.

[0066] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any change or replacement that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An automatic shredder, the automatic shredder comprising: An upper shredder cover and a lower shredder cover, the upper shredder cover being fixedly connected to the lower shredder cover; A paper box, the paper box including a first paper box and a second paper box, the first paper box being disposed at one end inside the lower shredder cover, the second paper box being disposed at the other end inside the lower shredder cover and communicating and combining with the first paper box to accommodate paper to be shredded; Wherein, the first paper box includes a groove recessed at one end of the first paper box away from the second paper box, and the second paper box includes a downwardly curved paper box.

2. The automatic shredder according to claim 1, wherein, The downwardly curved paper box is formed by a downwardly curved paper box upper side wall, a downwardly curved paper box paper blocking wall and a downwardly curved paper box lower side wall to form a semi-open downwardly curved cavity.

3. The automatic paper shredder according to claim 2, wherein, The downwardly curved paper box upper side wall is connected to the downwardly curved paper box paper blocking wall, and the downwardly curved paper box paper blocking wall is connected to the downwardly curved paper box lower side wall.

4. The automatic paper shredder according to claim 2 or 3, wherein, The included angle between the downwardly curved paper box paper blocking wall and the bottom plane of the first paper box is less than or equal to 90 degrees.

5. The automatic paper shredder according to any one of claims 1 to 4, wherein, A first accommodating cavity is formed on the lower shredder cover for accommodating the downwardly curved paper box.

6. The automatic paper shredder according to any one of claims 1 to 4, wherein, The first paper box and the second paper box are integrally formed or separately formed.

7. The automatic shredder according to claim 6, wherein, The second paper box is respectively connected to the first paper box and the upper shredder cover by screwing, clamping, riveting or welding.

8. The automatic paper shredder according to any one of claims 1 to 7, wherein, The groove of the first paper box serves as a nail accommodating groove.

9. The automatic paper shredder according to claim 8, wherein, A nail groove shaving plate is formed at the connection of the nail accommodating groove and the bottom of the first paper box.

10. The automatic paper shredder according to any one of claims 1 to 9, wherein, When the paper to be shredded is accommodated in the paper box, the paper to be shredded includes a first part accommodated in the groove of the first paper box and a second part accommodated in the downwardly curved paper box of the second paper box, so as to reduce the size of the paper box in the length direction of the paper to be shredded.

11. The automatic shredder according to any one of claims 1 to 10, wherein, The length of the second paper box is less than or equal to one half of the paper length of the paper to be shredded.

12. The automatic shredder according to claim 11, wherein, The length of the second paper box is less than or equal to one quarter of the paper length.

13. The automatic paper shredder according to any one of claims 1 to 12, wherein, The bottom plane of the part of the first paper box other than the groove slopes downward from the end away from the downwardly curved paper box to the end close to the downwardly curved paper box.

14. The automatic paper shredder according to any one of claims 1 to 12, wherein, The part of the bottom plane of the first paper box other than the groove is set to be horizontal.

15. The automatic shredder according to claim 2, wherein, The downwardly curved paper box upper side wall, the downwardly curved paper box paper blocking wall and the downwardly curved paper box lower side wall are integrally formed.

16. The automatic paper shredder according to claim 2, wherein, At least one first nail accommodating box is formed on the downwardly curved paper box lower side wall; The connection of the first nail accommodating box and the downwardly curved paper box lower side wall is used to remove staples or paper clips.

17. The automatic paper shredder according to claim 16, wherein, A first shaving plate is provided at the connection of the first nail accommodating box and the downwardly curved paper box lower side wall.

18. The automatic shredder according to claim 1, the automatic shredder further comprising: A shredder cover plate, the shredder cover plate being pivotally connected to one end of the upper shredder cover for covering or opening the automatic shredder; A pressing paper plate, the pressing paper plate being disposed on the lower end surface of the shredder cover plate and pressing the paper to be shredded placed on the paper box as the automatic shredder is covered by the shredder cover plate; A paper pressing wheel set, the paper pressing wheel set being disposed on one side of the pressing paper plate; A paper feed roller group, which is arranged inside the lower cover of the shredder and is arranged vertically corresponding to the paper pressing roller group up and down; A driving motor, which is arranged inside the lower cover of the shredder and is electrically connected to the paper feed roller group to drive the paper feed roller group to operate; And A paper inlet, which is opened on the paper box, Wherein, the paper feed roller group is configured to rotate under the drive of the driving motor to rub the lowermost paper in the papers to be shredded towards the paper inlet.

19. The automatic shredder according to claim 18, wherein the automatic shredder further comprises: A cutter shaft group, which is arranged inside the lower cover of the shredder and is located directly below the paper inlet for crushing the papers to be shredded.

20. The automatic paper shredder according to claim 18, wherein, The paper pressing plate comprises a first pressing plate, and the first pressing plate is arranged opposite to the bottom of the paper box.

21. The automatic shredder according to claim 20, wherein, The paper pressing plate further comprises a second pressing plate, and the second pressing plate presses the part of the paper to be shredded close to the groove into the groove.

22. An automatic shredder, which comprises: An upper cover of the shredder and a lower cover of the shredder, and the upper cover of the shredder is fixedly connected to the lower cover of the shredder; A paper box, which comprises a first paper box and a second paper box. The first paper box is arranged at one end inside the lower cover of the shredder, and the second paper box is arranged at the other end inside the lower cover of the shredder and is communicated and combined with the first paper box to accommodate the papers to be shredded, Wherein, the first paper box comprises a groove recessed at one end of the first paper box away from the second paper box, and the second paper box comprises an upwardly curved paper box.

23. The automatic shredder according to claim 22, wherein, The upwardly curved paper box is formed by an upwardly curved paper box upper side wall, an upwardly curved paper box paper blocking wall and an upwardly curved paper box lower side wall to form a semi-open upwardly curved cavity.

24. The automatic paper shredder according to claim 23, wherein, The upwardly curved paper box upper side wall is connected to the upwardly curved paper box paper blocking wall, and the upwardly curved paper box paper blocking wall is connected to the upwardly curved paper box lower side wall.

25. The automatic paper shredder according to claim 23 or 24, wherein, The included angle between the upwardly curved paper box paper blocking wall and the bottom plane of the first paper box is less than or equal to 90 degrees.

26. The automatic shredder according to any one of claims 22 to 25, wherein, A second accommodation cavity is opened on the upper cover of the shredder for accommodating the upwardly curved paper box.

27. The automatic shredder according to any one of claims 22 to 26, wherein, The first paper box and the second paper box are integrally formed or separately formed.

28. The automatic paper shredder according to claim 27, wherein, The second paper box is respectively connected to the first paper box and the upper cover of the shredder by screwing, clamping, riveting or welding.

29. The automatic paper shredder according to any one of claims 22 to 28, wherein, The groove of the first paper box serves as a nail accommodating groove.

30. The automatic paper shredder according to claim 29, wherein, A nail groove shaving plate is formed at the connection between the nail accommodating groove and the bottom of the first paper box.

31. The automatic paper shredder according to any one of claims 22 to 30, wherein, When the papers to be shredded are accommodated in the paper box, the papers to be shredded comprise a first part accommodated in the groove of the first paper box and a second part accommodated in the upwardly curved paper box of the second paper box, so that the size of the paper box in the length direction of the papers to be shredded can be reduced.

32. The automatic paper shredder according to any one of claims 22 to 31, wherein, The length of the second paper box is less than or equal to one half of the paper length of the papers to be shredded.

33. The automatic shredder according to claim 32, wherein, The length of the second paper box is less than or equal to one quarter of the paper length.

34. The automatic paper shredder according to any one of claims 22 to 33, wherein, The bottom plane of the part of the first paper box except the groove is inclined upward from the end away from the upwardly curved paper box to the end close to the upwardly curved paper box.

35. The automatic paper shredder according to any one of claims 22 to 33, wherein, The portion of the bottom plane of the first paper box other than the groove is set to be horizontal.

36. The automatic paper shredder according to claim 23, wherein, The upwardly curved upper side wall of the paper box, the upwardly curved paper blocking wall of the paper box, and the downwardly curved lower side wall of the paper box are integrally formed.

37. The automatic paper shredder according to claim 23, wherein, At least one second staple containing box is formed on the downwardly curved lower side wall of the paper box; The connection portion between the second staple containing box and the downwardly curved lower side wall of the paper box is used to remove staples or paper clips.

38. The automatic shredder according to claim 37, wherein, A second staple shaving plate is provided at the connection portion between the second staple containing box and the downwardly curved lower side wall of the paper box.

39. The automatic shredder according to claim 22, further comprising: A shredder cover plate pivotally connected to one end of the shredder upper cover for covering or opening the automatic shredder; A pressing plate disposed on the lower end surface of the shredder cover plate and pressing the paper to be shredded placed on the paper box when covering the automatic shredder with the shredder cover plate; A paper pressing wheel set disposed on one side of the pressing plate; A paper feeding wheel set disposed inside the lower cover of the shredder and vertically corresponding to the paper pressing wheel set; A driving motor disposed inside the lower cover of the shredder and electrically connected to the paper feeding wheel set to drive the paper feeding wheel set to operate; And A paper inlet opened on the paper box, wherein the paper feeding wheel set is configured to rotate under the drive of the driving motor to rub the lowermost paper in the paper to be shredded towards the paper inlet.

40. The automatic shredder according to claim 39, further comprising: A cutter shaft set disposed inside the lower cover of the shredder and directly below the paper inlet for crushing the stacked paper to be shredded.

41. The automatic paper shredder according to claim 39, wherein, The pressing plate includes a first pressing plate disposed opposite to the bottom of the paper box.

42. The automatic paper shredder according to claim 41, wherein, The pressing plate further includes a second pressing plate for pressing the portion of the paper to be shredded near the groove into the groove.

43. An automatic shredder, comprising: A shredder upper cover and a shredder lower cover fixedly connected to each other; A paper box including a first paper box and a second paper box, the first paper box being disposed at one end inside the lower cover of the shredder, the second paper box being disposed at the other end inside the lower cover of the shredder and communicating and combining with the first paper box to accommodate the paper to be shredded, wherein the first paper box includes a groove recessed at one end of the first paper box away from the second paper box, and the bottom surface of the second paper box forms a paper pressing plane.

44. The automatic paper shredder according to claim 43, wherein, The bottom surface of the second paper box and the bottom surface of the first paper box are in the same plane.

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