An automatic paper shredder

Abstract

The invention discloses an automatic paper shredder, comprising an upper cover of the paper shredder, a lower cover of the paper shredder, a first paper box, a second paper box, a cover plate of the paper shredder, a paper pressing board, a paper pressing wheel group, a paper picking wheel group, a paper inlet, a knife shaft group, a driving motor, a housing and a waste paper barrel. The invention utilizes the characteristics of the toughness and bendability of paper, combines the characteristics of the single-sided paper picking roller, and utilizes the paper length changed by the bending paper box to shred paper, which is extremely clean, simple and economical, and changes the structural mode of the automatic paper shredder for flatly laying paper.

Description

Technical Field

[0001] The invention relates to the field of paper shredders, in particular to an automatic paper shredder. Background Art

[0002] The automatic paper shredders currently on the market, whether they have two sets of paper pickup rollers that feed paper symmetrically or one set of paper pickup rollers that feed paper asymmetrically, need to add protective walls at both ends of the paper. Because the shape of the entire machine must include the long side of the paper, the shape is larger and it is impossible to completely compress the paper length to streamline the structure.

[0003] The solution of the present invention is to improve the existing paper shredder in view of the above-mentioned problems. Summary of the invention

[0004] In order to overcome the deficiencies in the prior art, the present invention provides an automatic paper shredder, which utilizes the toughness and bendability of paper, combines the characteristics of a single-sided paper rubbing roller, and utilizes a curved paper box to change the length of paper to shred paper, which is extremely clean, simple and economical, and changes the structural mode of the automatic paper shredder in which paper is laid flat.

[0005] In order to achieve the above-mentioned invention object, the technical solution adopted to solve the technical problem is as follows:

[0006] An automatic paper shredder comprises a paper shredder upper cover, a paper shredder lower cover, a first paper box, a second paper box, a paper shredder cover, a paper pressing board, a paper pressing wheel group, a paper picking wheel group, a paper inlet, a knife shaft group, a driving motor, a housing and a waste paper barrel, wherein:

[0007] The shredder upper cover is fixedly connected to the shredder lower cover;

[0008] The first paper box is arranged at one end of the inner side of the lower cover of the shredder;

[0009] The second paper box is arranged at the other end of the inner side of the lower cover of the paper shredder and is connected and combined with the first paper box for accommodating stacked paper to be shredded;

[0010] The shredder cover is pivotally connected to one end of the shredder upper cover and is used to close or open the shredder;

[0011] The paper pressing plate is fixedly connected to the lower end surface of the shredder cover and comprises at least one horizontal pressing plate, which is used to press the stacked shredded paper placed on the first paper box when the user closes the shredder cover;

[0012] The paper pressing wheel group is arranged on one side of the paper pressing board, and is arranged vertically corresponding to the paper picking wheel group;

[0013] The paper inlet is opened on the first paper box;

[0014] The knife shaft assembly is arranged inside the lower cover of the shredder and is located directly below the paper inlet, and is used to crush the stacked paper to be shredded;

[0015] The driving motor is arranged inside the lower cover of the shredder and is electrically connected to the cutter shaft assembly and the paper pickup wheel assembly, and is used to drive the cutter shaft assembly and the paper pickup wheel assembly to operate;

[0016] The pickup wheel assembly is arranged inside the lower cover of the shredder and is located on the side of the cutter shaft assembly away from the second paper box, and is used to rotate the pickup wheel assembly under the drive of the driving motor to rub the bottom sheet of paper to be shredded stacked above the first paper box toward the second paper box and move the paper in the opposite direction under the reaction force of the side wall of the second paper box so that the paper is bent and deformed at the paper inlet and enters the paper inlet downward;

[0017] The housing is disposed below the lower cover of the shredder and is fixedly connected to the lower cover of the shredder;

[0018] The waste paper bucket is arranged inside the shell and is used for collecting paper scraps.

[0019] Furthermore, it also includes a nail receiving groove, which is recessed at one end of the first paper box away from the second paper box and is used to collect the removed staples or paper clips.

[0020] Furthermore, a nail groove shaving plate is provided at the corner portion where the nail receiving groove is connected to the bottom plane of the first paper box.

[0021] Preferably, the first paper box and the second paper box are made in one piece or separately.

[0022] Preferably, when the first paper box and the second paper box are manufactured separately, the second paper box is connected to the first paper box and the upper cover of the shredder respectively by screwing, clamping, riveting or welding.

[0023] Preferably, the sum of the lengths of the first paper box and the second paper box is equal to the length of the paper to be shredded.

[0024] Preferably, the length of the second paper box is less than or equal to half of the length of the paper.

[0025] Preferably, the length of the second paper box is less than or equal to one quarter of the length of the paper.

[0026] Preferably, the entrance width of the second paper box is equal to the width of the first paper box.

[0027] Furthermore, the second paper box is a conventional paper box, a downward curved paper box or an upward curved paper box.

[0028] Preferably, when the second paper box is a conventional paper box, the upper surface of the second paper box and the upper surface of the first paper box are in the same plane and are arranged horizontally or inclined.

[0029] Preferably, an angle between a side wall of the second paper box away from the first paper box and a bottom plane of the first paper box is less than or equal to 90 degrees.

[0030] Furthermore, the paper pressing plate further comprises a vertical pressing plate, the horizontal pressing plate presses the stacked paper to be shredded onto the first paper box, and the vertical pressing plate presses part of the stacked paper to be shredded close to the nail receiving groove into the nail receiving groove.

[0031] Preferably, when the second paper box is a downward-curved paper box, the downward-curved paper box is formed by sequentially connecting the upper side wall of the downward-curved paper box, the paper stop wall of the downward-curved paper box and the lower side wall of the downward-curved paper box to form a semi-open downward-curved cavity, and is fixedly connected to the lower cover of the shredder, and is connected and combined with the first paper box to accommodate stacked papers to be shredded.

[0032] Preferably, the bottom plane of the first paper box gradually slopes downward from an end away from the downwardly curved paper box to an end close to the downwardly curved paper box.

[0033] Preferably, the angle between the downwardly curved paper box paper stop wall and the bottom plane of the first paper box is less than or equal to 90 degrees.

[0034] Furthermore, the left and right ends of the lower side wall of the downwardly curved paper box expand outwards near the paper stop wall of the downwardly curved paper box to form a first nail receiving box;

[0035] The folded corners at the connection between the two first staple boxes on the left and right and the lower side wall of the downwardly curved paper box are used to remove staples or paper clips on the bottom sheet of stacked paper;

[0036] The two facing side surfaces inside the left and right first staple containing boxes are both opening surfaces of the first staple shaving portion and are connected to the waste paper barrel for removing excess staples or paper clips.

[0037] Preferably, the downwardly curved paper box upper side wall, the downwardly curved paper box paper stop wall, the first nail receiving box and the downwardly curved paper box lower side wall are integrally formed.

[0038] Furthermore, a first nail shaving plate is provided at the corner portion where the two left and right first nail containing boxes are connected to the lower side wall of the downwardly curved paper box.

[0039] Furthermore, a plurality of first reinforcing ribs are arranged between the upper portion of the first nail containing box and the lower side wall of the downwardly curved paper box.

[0040] Furthermore, a first accommodating cavity is provided on the lower cover of the shredder for accommodating the downwardly bent paper box.

[0041] Preferably, when the second paper box is an upward curved paper box, the upward curved paper box is formed by sequentially connecting the upper side wall of the upward curved paper box, the paper stop wall of the upward curved paper box and the lower side wall of the upward curved paper box to form a semi-open upward curved cavity, and is fixedly connected to the upper cover of the shredder, and is connected and combined with the first paper box to accommodate stacked papers to be shredded.

[0042] Preferably, the bottom plane of the first paper box gradually tilts upward from an end away from the upwardly curved paper box to an end close to the upwardly curved paper box.

[0043] Preferably, the angle between the upwardly curved paper box paper stop wall and the bottom plane of the first paper box is less than or equal to 90 degrees.

[0044] Furthermore, the left and right ends of the lower side wall of the upwardly curved paper box expand outwards near the paper stop wall of the upwardly curved paper box to form a second nail receiving box;

[0045] The folded corners at the connection between the two left and right second staple containing boxes and the lower side wall of the upwardly curved paper box are used to remove staples or paper clips on the bottom sheet of stacked paper;

[0046] The two opposite side surfaces of the outer sides of the left and right second staple boxes are both opening surfaces of the second staple shaving portion, and are connected to the waste paper barrel through through holes arranged at two corners of the lower cover of the shredder for removing excess staples or paper clips.

[0047] Preferably, the upwardly curved paper box upper side wall, the upwardly curved paper box paper stop wall, the second nail containing box and the upwardly curved paper box lower side wall are integrally formed.

[0048] Furthermore, a second nail shaving plate is provided at the corner portion where the two left and right second nail containing boxes are connected to the lower side wall of the upwardly curved paper box.

[0049] Furthermore, a plurality of second reinforcing ribs are provided between the upper portion of the second nail containing box and the lower side wall of the upwardly curved paper box.

[0050] Furthermore, a second accommodating cavity is provided on the upper cover of the shredder for accommodating the upwardly bent paper box.

[0051] Due to the adoption of the above technical solution, the present invention has the following advantages and positive effects compared with the prior art:

[0052] 1. The automatic paper shredder of the present invention sets the bottom plane of the first paper box to be inclined, which is more in line with the user's usage habits and convenient for the user to place the stacked paper to be shredded. At the same time, it can reduce the friction between the stacked paper to be shredded, so that the friction is decomposed into horizontal and vertical directions;

[0053] 2. The automatic shredder of the present invention can automatically remove staples and / or paper clips, greatly improve the efficiency of shredding, save time, and prevent staples and / or paper clips from damaging the whole machine, thereby protecting the use of the whole machine and extending its service life;

[0054] 3. The automatic paper shredder of the present invention utilizes the toughness and bendability of paper, combines the characteristics of a single-sided paper rubbing roller, and utilizes the paper length changed by a curved paper box to shred paper. It is extremely clean and economical, and changes the structural mode of flat-laying paper in the automatic paper shredder. It has the characteristics of high automation, easy use, safety and reliability, ingenious design, simple structure, and economical cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below 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 work. In the drawings:

[0056] Figure 1 is a first partial cross-sectional view of an automatic paper shredder of the present invention;

[0057] Figure 2A This is a structural schematic diagram of an automatic paper shredder of the present invention, in which a downwardly curved paper box is installed in a lower cover of the paper shredder (with an upper cover of the paper shredder); (the arrow indicates the paper loading direction, and the second paper box is a curved paper box)

[0058] Figure 2B This is a schematic diagram of the structure of an automatic shredder of the present invention after the shredder upper cover and the press board are hidden; (the second paper box is a conventional paper box)

[0059] Figure 3 This is an overall cross-sectional view of an automatic paper shredder of the present invention; (arrow indicates the paper loading direction)

[0060] Figure 4 It is a structural schematic diagram of an automatic paper shredder of the present invention in which a downwardly curved paper box is installed in a lower cover of the paper shredder (without an upper cover of the paper shredder);

[0061] Figure 5 This is a schematic diagram of the structure of the downwardly curved paper box and the upper and lower covers of the shredder in an automatic shredder of the present invention; (the arrow indicates the assembly direction)

[0062] Figure 6 This is a schematic diagram of the overall structure of a downwardly curved paper box in an automatic paper shredder of the present invention; (arrow indicates the paper loading direction)

[0063] Figure 7 It is a structural schematic diagram of a first accommodating chamber in an automatic paper shredder of the present invention;

[0064] Figure 8 is a second partial cross-sectional view of an automatic paper shredder of the present invention;

[0065] Fig. 9 This is a schematic diagram of the overall structure of an upwardly curved paper box in an automatic paper shredder of the present invention; (the arrow indicates the paper loading direction)

[0066] Fig.10 It is a schematic diagram of the installation structure of an upwardly curved paper box in an automatic paper shredder of the present invention;

[0067] Fig.11 It is a schematic diagram of the moving direction of the shaving nails in an automatic paper shredder of the present invention;

[0068] Fig.12 This is a schematic structural diagram of a first paper pressing condition of an automatic paper shredder of the present invention;

[0069] Fig.13 It is a structural schematic diagram of a second paper pressing condition of an automatic paper shredder of the present invention.

[0070]

Explanation of main symbols

[0071] 1- shredder upper cover; 2- shredder lower cover; 3- first paper box; 4- second paper box; 5- shredder cover; 6- paper pressing board; 7- paper pressing wheel group; 8- paper rubbing wheel group; 9- paper inlet; 10- knife shaft group; 11- driving motor; 12- first accommodating cavity; 13- downwardly curved upper side wall of paper box; 14- downwardly curved paper box paper blocking wall; 15- downwardly curved lower side wall of paper box; 16- first nail accommodating box; 17- first nail shaving part opening surface; 18- first reinforcing rib; 19- nail accommodating groove; 20- second accommodating cavity; 21- upwardly curved upper side wall of paper box; 22- upwardly curved paper box paper blocking wall; 23- upwardly curved lower side wall of paper box; 24- second nail accommodating box; 25- second nail shaving part opening surface; 26- through hole; 27- second reinforcing rib; 28- horizontal pressing plate; 29- vertical pressing plate. DETAILED DESCRIPTION

[0072] The following will clearly and completely describe and discuss the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings of the present invention. Obviously, what is described here is only a part of the examples of the present invention, not all the examples. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0073] like Figure 1-13 As shown, this embodiment discloses an automatic paper shredder, including a paper shredder upper cover 1, a paper shredder lower cover 2, a first paper box 3, a second paper box 4, a paper shredder cover 5, a paper pressing board 6, a paper pressing wheel group 7, a paper pickup wheel group 8, a paper inlet 9, a knife shaft group 10, a driving motor 11, a housing (not shown) and a waste paper barrel (not shown), wherein:

[0074] The shredder upper cover 1 is fixedly connected to the shredder lower cover 2;

[0075] The first paper box 3 is arranged at one end of the inner side of the lower cover 2 of the shredder;

[0076] The second paper box 4 is arranged at the other end of the inner side of the lower cover 2 of the shredder, and is connected and combined with the first paper box 3, and is used to accommodate stacked paper to be shredded;

[0077] The shredder cover plate 5 is pivotally connected to one end of the shredder upper cover 1 and is used to close or open the shredder;

[0078] The paper pressing plate 6 is fixedly connected to the lower end surface of the shredder cover 5 and includes at least one horizontal pressing plate 28, which is used to press the stacked shredded papers placed on the first paper box 3 when the user closes the shredder cover 5;

[0079] The paper pressing wheel group 7 is arranged on one side of the paper pressing paper 6, and is arranged correspondingly to the paper picking wheel group 8 in the vertical direction; in this embodiment, the number of the paper pressing wheel group 7 and the paper picking wheel group 8 are both 2, and this number is not limited. A larger or smaller number of paper pressing wheel groups 7 and paper picking wheel groups 8 are all within the protection scope of this embodiment.

[0080] The paper inlet 9 is opened on the first paper box 3;

[0081] The blade shaft assembly 10 is disposed inside the lower cover 2 of the shredder and is located directly below the paper inlet 9, and is used to crush the stacked paper to be shredded;

[0082] The driving motor 11 is disposed inside the lower cover 2 of the shredder and is electrically connected to the cutter shaft assembly 10 and the pickup wheel assembly 8, and is used to drive the cutter shaft assembly 10 and the pickup wheel assembly 8 to operate;

[0083] The pickup wheel group 8 is arranged inside the lower cover 2 of the shredder and is located on the side of the blade shaft group 10 away from the second paper box 4. It is used to rotate the pickup wheel group 8 under the drive of the drive motor 11 to rub the bottom sheet of paper to be shredded stacked above the first paper box 3 toward the second paper box 4 and move the paper in the opposite direction under the reaction force of the side wall of the second paper box 4, so that the paper is bent and deformed at the paper inlet 9 and enters the paper inlet 9 downward. In this embodiment, the number of the pickup wheel groups 8 is two. In actual design, there is no limitation on the number of pickup wheel groups 8, which can be three or more. In addition, the design concept of the single-sided pickup wheel group 8 simplifies the pickup structure and saves economic costs.

[0084] The housing is disposed below the lower cover 2 of the shredder and is fixedly connected to the lower cover 2 of the shredder;

[0085] The waste paper bucket is arranged inside the shell and is used for collecting paper scraps.

[0086] like Fig.12 As shown, the automatic shredder further comprises a nail receiving groove 19, which is recessed at one end of the first paper box 3 away from the second paper box 4 and is used to collect the staples or paper clips removed. A nail receiving groove shaving plate is provided at the corner portion where the nail receiving groove 19 is connected to the bottom plane of the first paper box 3.

[0087] Preferably, the first paper box 3 and the second paper box 4 are made in one piece or in separate pieces. When the first paper box 3 and the second paper box 4 are made in separate pieces, the first paper box 3 and the second paper box 4 are connected to the shredder cover 1 by one or more combinations of fixed connection methods such as screw connection, clamping connection, riveting or welding. As long as the fixed connection effect is achieved, it is within the protection scope of this case.

[0088] Preferably, the sum of the lengths of the first paper box 3 and the second paper box 4 is equal to the length of the paper to be shredded, and the paper length defaults 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 size of the shredder. In another embodiment, the length of the second paper box 4 is less than or equal to one-quarter of the paper length. In this case, the paper pressing effect of the paper pressing board 6 is better than that of the previous case, and the paper rubbing effect is also better, but correspondingly, the size of the shredder is larger than that of the previous case.

[0089] Preferably, the inlet width of the second paper box 4 is equal to the width of the first paper box 3 , which can effectively prevent the stacked paper sheets to be shredded above the first paper box 3 from moving left and right.

[0090] Further, the second paper box 4 is a conventional paper box, a downward curved paper box or an upward curved paper box, which is specifically divided into:

[0091] 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 in the same plane, and are arranged horizontally or inclined. Preferably, the angle C between the side wall of the second paper box 4 away 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 Fig.12 and 13 .

[0092] Further in Fig.13 In the embodiment, the paper pressing plate 6 further includes a vertical pressing plate 29 , the horizontal pressing plate 28 presses the stacked paper to be shredded onto the first paper box 3 , and the vertical pressing plate 29 presses part of the stacked paper to be shredded close to the nail receiving groove 19 into the nail receiving groove 19 .

[0093] In another embodiment, when the second paper box 4 is a downwardly curved paper box (such as Figure 1 , 2A , 3 and 6), the downward bending paper box is formed by the downward bending paper box upper side wall 13, the downward bending paper box paper stop wall 14 and the downward bending paper box lower side wall 15 connected in sequence to form a semi-open downward bending cavity, and is fixedly connected to the lower cover 2 of the shredder, and is connected and combined with the first paper box 3 to accommodate stacked papers to be shredded (the case of one sheet of paper is also applicable).

[0094] Preferably, the bottom plane of the first paper box 3 is gradually tilted downward from the end away from the downwardly curved paper box to the end close to the downwardly curved paper box, which is convenient for users to place stacked paper to be shredded and can reduce the friction between the stacked paper. 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 to place paper.

[0095] In this embodiment, the length of the downwardly curved paper box is less than or equal to one-half of the length of the paper, which can minimize the length of the first paper box 3, thereby greatly reducing the volume of the shredder. In another embodiment, the length of the downwardly curved paper box is less than or equal to one-quarter of the length of the paper. In this case, the paper pressing effect of the paper pressing paper 6 is better than that of the previous case, and the paper rubbing effect is also better, but correspondingly, the volume of the shredder is larger than that of the previous case.

[0096] Preferably, the angle A between the downwardly curved paper box paper stop wall 14 and the bottom plane of the first paper box 3 is less than or equal to 90 degrees. Figure 1 .

[0097] Figure 6In the embodiment, the left and right ends of the downwardly curved paper box lower side wall 15 expand outward near the downwardly curved paper box paper stop wall 14 to form a first nail receiving box 16; the folded corners at the connection between the two first nail receiving boxes 16 and the downwardly curved paper box lower side wall 15 are used to remove staples or paper clips on the bottom sheet of stacked paper; the two facing side surfaces inside the two first nail receiving boxes 16 are both first nail shaving opening surfaces 17, and are connected to the waste paper barrel for removing excess staples or paper clips.

[0098] Preferably, the downwardly curved paper box upper side wall 13, the downwardly curved paper box paper stop wall 14, the first nail receiving box 16 and the downwardly curved paper box lower side wall 15 are integrally formed.

[0099] Furthermore, a first nail shaving plate (not shown) is provided at the corner portion where the two first nail containing boxes 16 on the left and right sides are connected to the lower side wall 15 of the downwardly curved paper box. Preferably, the first nail shaving plate is made of metal material. In this embodiment, the first nail shaving plate made of metal can effectively increase the nail shaving efficiency and extend its service life.

[0100] Further references Figure 6 A plurality of first reinforcing ribs 18 are provided between the upper portion of the first nail containing box 16 and the lower side wall 15 of the downwardly curved paper box. In actual operation, frequent nail shaving leads to accelerated wear between the two, and the provision of the first reinforcing ribs 18 can effectively extend the service life of the downwardly curved paper box.

[0101] Figure 5 In the embodiment, a first accommodating cavity 12 is provided on the lower cover 2 of the shredder for accommodating the downwardly bent paper box.

[0102] In another embodiment, when the second paper box 4 is an upwardly curved paper box (such as Figure 8-10 ), the upwardly curved paper box is connected in sequence by the upwardly curved paper box upper side wall 21, the upwardly curved paper box paper stop wall 22 and the upwardly curved paper box lower side wall 23 to form a semi-open upwardly curved cavity, and is fixedly connected to the shredder upper cover 1, and is connected and combined with the first paper box 3, for accommodating stacked paper to be shredded (the case of one sheet of paper is also applicable).

[0103] Preferably, the bottom plane of the first paper box 3 is gradually tilted upward from the end away from the upwardly curved paper box to the end close to the upwardly curved paper box, which is convenient for users to place stacked paper to be shredded and can reduce the friction between the stacked paper. 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 to place paper.

[0104] Preferably, the length of the upwardly curved paper box is less than or equal to one-fourth of the length of the paper. In this embodiment, the reason why the length of the upwardly curved paper box is not less than or equal to one-half of the length of the paper is that, in this embodiment, the upwardly curved paper box is arranged in the upper cover 1 of the shredder. If the scheme of "the length of the downwardly curved paper box is less than or equal to one-half of the length of the paper" is adopted, the height of the upper cover 1 of the shredder will be virtually increased. In terms of weighing the factors of reducing the length of the first paper box 3 and the height of the upper cover 1 of the shredder, the scheme of "the length of the upwardly curved paper box is less than or equal to one-fourth of the length of the paper" in this embodiment is more appropriate, which can greatly shorten the length of the first paper box 3, thereby effectively reducing the volume of the shredder, and at the same time, it will not make the upper cover 1 of the shredder too bulky.

[0105] Preferably, the angle B between the upwardly curved paper box paper stop wall 22 and the bottom plane of the first paper box 3 is less than or equal to 90 degrees. Figure 8 .

[0106] Furthermore, the left and right ends of the lower side wall 23 of the upwardly curved paper box expand outward near the paper stop wall 22 of the upwardly curved paper box to form a second nail box 24; the folded corners at the connection between the two second nail boxes 24 and the lower side wall 23 of the upwardly curved paper box are used to remove staples or paper clips on the bottom sheet of stacked paper; the two opposite side surfaces of the outer sides of the two second nail boxes 24 are both second nail shaving opening surfaces 25, and are connected to the waste paper barrel through the through holes 26 set at the two corners of the lower cover 2 of the shredder, which are used to remove excess staples or paper clips, as shown in the figure. In this embodiment, the two side surfaces of the inner sides of the two second nail boxes 24 are closed and tilted outward, so that the removed staples or paper clips can move to the through holes 26 at the two corners of the lower cover 2 of the shredder.

[0107] Preferably, the upwardly curved paper box upper side wall 21, the upwardly curved paper box paper stop wall 22, the second nail receiving box 24 and the upwardly curved paper box lower side wall 23 are integrally formed.

[0108] Furthermore, a second nail shaving plate (not shown) is provided at the corner portion where the two second nail containing boxes 24 on the left and right sides are connected to the lower side wall 23 of the upwardly curved paper box. Preferably, the second nail shaving plate is made of metal material. In this embodiment, the second nail shaving plate made of metal can effectively increase the nail shaving efficiency and extend its service life.

[0109] Further references Fig.10A plurality of second reinforcing ribs 27 are provided between the upper portion of the second nail containing box 24 and the lower side wall 23 of the upwardly curved paper box. In actual operation, frequent nail shaving 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 curved paper box.

[0110] Furthermore, a second accommodating cavity 20 is provided on the upper cover 1 of the shredder for accommodating the upwardly bent paper box.

[0111] 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 changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An automatic paper shredder, characterized in that: It includes a shredder upper cover, a shredder lower cover, a first paper box, a second paper box, a shredder cover, a paper pressing board, a paper pressing wheel group, a paper picking wheel group, a paper inlet, a knife shaft group, a driving motor, a housing, a waste paper barrel, and a nail receiving groove, wherein: The shredder upper cover is fixedly connected to the shredder lower cover; The first paper box is arranged at one end of the inner side of the lower cover of the shredder; The second paper box is arranged at the other end of the inner side of the lower cover of the paper shredder and is connected and combined with the first paper box for accommodating stacked paper to be shredded; The shredder cover is pivotally connected to one end of the shredder upper cover and is used to close or open the shredder; The paper pressing plate is fixedly connected to the lower end surface of the shredder cover and comprises at least one horizontal pressing plate, which is used to press the stacked shredded paper placed on the first paper box when the user closes the shredder cover; The paper pressing wheel group is arranged on one side of the paper pressing board, and is arranged vertically corresponding to the paper picking wheel group; The paper inlet is opened on the first paper box; The knife shaft assembly is arranged inside the lower cover of the shredder and is located directly below the paper inlet, and is used to crush the stacked paper to be shredded; The driving motor is arranged inside the lower cover of the shredder and is electrically connected to the cutter shaft assembly and the paper pickup wheel assembly, and is used to drive the cutter shaft assembly and the paper pickup wheel assembly to operate; The pickup wheel assembly is arranged inside the lower cover of the shredder and is located on the side of the cutter shaft assembly away from the second paper box, and is used to rotate the pickup wheel assembly under the drive of the driving motor to rub the bottom sheet of paper to be shredded stacked above the first paper box toward the second paper box and move the paper in the opposite direction under the reaction force of the side wall of the second paper box so that the paper is bent and deformed at the paper inlet and enters the paper inlet downward; The housing is disposed below the lower cover of the shredder and is fixedly connected to the lower cover of the shredder; The waste paper bucket is arranged inside the housing and is used to collect paper scraps; The staple receiving groove is recessed at one end of the first paper box away from the second paper box, and is used to collect the staples or paper clips that are removed; The second paper box is a downward curved paper box or an upward curved paper box; When the second paper box is a downwardly curved paper box, the downwardly curved paper box is connected in sequence by an upper side wall of the downwardly curved paper box, a paper stop 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 shredder, and is connected and combined with the first paper box to accommodate stacked paper to be shredded; The angle between the downwardly curved paper box paper stop wall and the bottom plane of the first paper box is less than or equal to 90 degrees; The lower cover of the shredder is provided with a first accommodating cavity for accommodating the downwardly bent paper box; When the second paper box is an upwardly curved paper box, the upwardly curved paper box is connected in sequence by an upper side wall of the upwardly curved paper box, a paper stop wall of the upwardly curved paper box and a lower side wall of the upwardly curved paper box to form a semi-open upwardly curved cavity, and is fixedly connected to the upper cover of the shredder, and is connected and combined with the first paper box to accommodate stacked paper to be shredded; The angle between the upwardly curved paper box paper stop wall and the bottom plane of the first paper box is less than or equal to 90 degrees; The upper cover of the paper shredder is provided with a second accommodating cavity for accommodating the upwardly bent paper box.

2. The automatic paper shredder according to claim 1, characterized in that: A nail groove shaving plate is provided at the corner portion where the nail containing groove is connected to the bottom plane of the first paper box.

3. The automatic paper shredder according to claim 1, characterized in that: The first paper box and the second paper box are made in one piece or in separate pieces.

4. The automatic paper shredder according to claim 3, characterized in that: When the first paper box and the second paper box are manufactured separately, the second paper box is connected to the first paper box and the upper cover of the shredder respectively by screwing, clamping, riveting or welding.

5. The automatic paper shredder according to claim 1, characterized in that: The sum of the lengths of the first paper box and the second paper box is equal to the length of the paper to be shredded.

6. The automatic paper shredder according to claim 5, characterized in that: The length of the second paper box is less than or equal to half of the length of the paper.

7. The automatic paper shredder according to claim 6, characterized in that: The length of the second paper box is less than or equal to one quarter of the length of the paper.

8. The automatic paper shredder according to claim 1, characterized in that: The entrance width of the second paper box is equal to the width of the first paper box.

9. The automatic paper shredder according to claim 1, characterized in that: The bottom plane of the first paper box gradually slopes downward from an end away from the downwardly curved paper box to an end close to the downwardly curved paper box.

10. The automatic paper shredder according to claim 1, characterized in that: The left and right ends of the lower side wall of the downwardly curved paper box expand outwards near the paper stop wall of the downwardly curved paper box to form a first nail receiving box; The folded corners at the connection between the two first staple boxes on the left and right and the lower side wall of the downwardly curved paper box are used to remove staples or paper clips on the bottom sheet of stacked paper; The two facing side surfaces inside the left and right first staple containing boxes are both opening surfaces of the first staple shaving portion and are connected to the waste paper barrel for removing excess staples or paper clips.

11. The automatic paper shredder according to claim 10, characterized in that: The downwardly curved paper box upper side wall, the downwardly curved paper box paper stop wall, the first nail containing box and the downwardly curved paper box lower side wall are integrally formed.

12. The automatic paper shredder according to claim 10, characterized in that: The first nail shaving plates are arranged at the corner portions where the two first nail containing boxes on the left and right sides are connected to the lower side walls of the downwardly curved paper box.

13. The automatic paper shredder according to claim 10, characterized in that: A plurality of first reinforcing ribs are arranged between the upper portion of the first nail containing box and the lower side wall of the downwardly curved paper box.

14. The automatic paper shredder according to claim 1, characterized in that: The bottom plane of the first paper box gradually inclines upward from an end away from the upwardly curved paper box to an end close to the upwardly curved paper box.

15. The automatic paper shredder according to claim 1, characterized in that: The left and right ends of the lower side wall of the upwardly curved paper box expand outwards near the paper stop wall of the upwardly curved paper box to form a second nail receiving box; The folded corners at the connection between the two left and right second staple containing boxes and the lower side wall of the upwardly curved paper box are used to remove staples or paper clips on the bottom sheet of stacked paper; The two opposite side surfaces of the outer sides of the left and right second staple boxes are both opening surfaces of the second staple shaving portion, and are connected to the waste paper barrel through through holes arranged at two corners of the lower cover of the shredder for removing excess staples or paper clips.

16. The automatic paper shredder according to claim 15, characterized in that: The upwardly curved paper box upper side wall, the upwardly curved paper box paper stop wall, the second nail containing box and the upwardly curved paper box lower side wall are integrally formed.

17. The automatic paper shredder according to claim 15, characterized in that: The second nail shaving plates are arranged at the corner portions where the two left and right second nail containing boxes are connected to the lower side walls of the upwardly curved paper box.

18. The automatic paper shredder according to claim 15, characterized in that: A plurality of second reinforcing ribs are arranged between the upper portion of the second nail containing box and the lower side wall of the upwardly curved paper box.

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