Paper shredder with guid

Abstract

The present invention relates to a document shredder with a guide, comprising a main body having an external shape and an input port for inserting documents, a shredding unit installed inside the main body and connected to the input port for cutting documents to a predetermined horizontal and vertical length, and a collection container provided at the bottom of the shredding unit for temporarily collecting shredded materials. The shredding unit comprises a first rotation axis and a second rotation axis arranged parallel to each other, a plurality of pairs of cutters continuously assembled to intersect the first rotation axis and the second rotation axis, a pair of side frames each installed on the outer side of the plurality of pairs of cutters, and a guide unit that provides a movement path for documents inserted through the input port and covers the upper and front / rear sides of the plurality of pairs of cutters to block debris cut by the plurality of pairs of cutters from moving to the upper part of the shredding unit. By installing the guide unit to be connected to the input port, the movement path for the inserted documents is provided, and the cutting debris is prevented from returning to the cutters.

Description

Technology Field

[0001] The present invention relates to a document shredder, and more specifically, to a document shredder having a guide applied to an input port into which a document is fed into the interior of the document shredder that shreds documents into pieces. Background Technology

[0002] Generally, document shredders are used to cut secure or confidential documents, corporate documents containing personal information, and financial institution receipts into pieces, and are utilized in various places such as government agencies, public offices, corporations, and financial institutions.

[0003] In addition, document shredders are installed in the offices of various institutions and banks to prevent the leakage and protect against the leakage of personal information contained in confidential documents of government agencies, public offices, and corporations, as well as statements issued through ATMs at financial institutions.

[0004] These document shredders shred documents simply by people inserting them into the input slot, rendering the contents illegible.

[0005] To this end, the shredding unit of the document shredder includes a motor and a document shredder cutter, and the document shredder cutter rotates by the rotational force of the motor to finely shred the fed document.

[0006] For example, the following patent documents 1 and 2 disclose document shredder technology according to the prior art.

[0007] In a document shredder according to the prior art, a document fed through an input port is supplied to multiple pairs of cutters, and as the multiple pairs of cutters rotate by the rotational force of a motor, the fed document is shredded into small pieces.

[0008] In a document shredder according to this prior art, multiple pairs of cutters are installed in a state where they are exposed in the lower space of the input opening formed at the top of the main body.

[0009] As such, since the cutter is installed in an exposed state, the document shredder according to the prior art had a problem in that noise generated during cutter operation was transmitted to the outside through the input port.

[0010] In addition, conventional document shredders had a problem in which, when an excessively large amount of documents were fed at once during the document shredding process, the load acting on multiple pairs of cutters increased, causing the cutters to become misaligned and resulting in poor alignment.

[0011] In addition, document shredders according to the prior art had a problem in that the cutting debris shredded by the cutter moved back to the cutter side along the surfaces of the cutter and the spacer.

[0012] Therefore, in a document shredder according to the prior art, the driving load caused by cutting debris may increase as the debris gets stuck between the cutters or moves back to the cutter side along the cutter and spacer and remains on the shredding section.

[0013] As a result, document shredders according to the prior art had problems such as causing damage, breakage, or misalignment of the cutter and failure of the drive motor due to cutting debris remaining on the shredding unit, and generating noise during the cutting process. Prior art literature

[0014] Republic of Korea Patent Publication No. 10-2009-0127653 (Published December 14, 2009) Republic of Korea Patent Registration No. 10-1502747 (Published March 16, 2015) The problem to be solved

[0015] The objective of the present invention is to solve the aforementioned problems by providing a document shredder that provides a path for a document to be shredded to move through an input port to a cutter, and includes a guide that can protect the upper part of the cutter.

[0016] Another objective of the present invention is to provide a document shredder equipped with a guide that prevents cut debris from moving back to the cutter side.

[0017] Another objective of the present invention is to provide a document shredder equipped with a guide that minimizes the load caused by cutting debris remaining on the cutter and suppresses noise generation. means of solving the problem

[0018] To achieve the above-mentioned purpose, a document shredder with a guide according to the present invention comprises a main body having an external shape and an input port for inserting documents, a shredding unit installed inside the main body and connected to the input port to cut documents to a predetermined horizontal and vertical length, and a collection container provided at the bottom of the shredding unit for temporarily collecting shredded materials. The shredding unit is characterized by including a first rotation axis and a second rotation axis arranged parallel to each other, a plurality of pairs of cutters continuously assembled to intersect the first rotation axis and the second rotation axis, a pair of side frames each installed on the outer side of the plurality of pairs of cutters, and a guide unit that provides a movement path for documents inserted through the input port and covers the upper and front / rear sides of the plurality of pairs of cutters to block debris cut by the plurality of pairs of cutters from moving to the upper part of the shredding unit. Effects of the invention

[0019] As described above, according to the document shredder with the guide applied according to the present invention, a guide unit is installed to be connected to the input port to provide a movement path for the input document, and the effect of preventing the cutting debris from returning to the cutter is obtained.

[0020] That is, according to the present invention, the effect is obtained of using an upper guide to guide the document to an accurate position where the cutter can cut it, preventing other materials other than the document from being supplied to the cutter through the input port, and using a lower guide to block the cut debris from being supplied back to the cutter.

[0021] In addition, according to the present invention, by firmly connecting the bracket forming the input port and the guide unit, and firmly connecting each guide constituting the guide unit, the effect of increasing the bonding strength of each part and reinforcing the rigidity of each part is obtained.

[0022] Accordingly, according to the present invention, the noise generated during the process of driving a cutter to shred a document is blocked from being transmitted to the outside, thereby minimizing product noise, and the load acting on the cutter is reduced by blocking the upward movement of cutting debris, thereby improving document shredding efficiency and the durability of each component, and extending the lifespan of the product. Brief explanation of the drawing

[0024] FIG. 1 is a perspective view of a document shredder with a guide applied according to a preferred embodiment of the present invention, FIG. 2 is an exploded perspective view of the inlet and shredding section shown in FIG. 1. FIG. 3 is a side cross-sectional view of the section shown in FIG. 2. Specific details for implementing the invention

[0025] A document shredder with a guide applied according to a preferred embodiment of the present invention will be described in detail below with reference to the attached drawings.

[0027] FIG. 1 is a perspective view of a document shredder with a guide applied according to a preferred embodiment of the present invention, FIG. 2 is an exploded perspective view of the input port and shredding part shown in FIG. 1, and FIG. 3 is a side cross-sectional view of the shredding part shown in FIG. 2.

[0028] In the following, the direction in which the cutter (50) is installed relative to the drive motor (31) is referred to as the "front," and the opposite direction is referred to as the "rear." Additionally, terms indicating directions such as "left," "right," "up," and "down" are defined as indicating directions relative to the aforementioned front and rear.

[0030] A document shredder (10) with a guide applied according to a preferred embodiment of the present invention, as shown in FIGS. 1 to 3, comprises a main body (20) having an external shape and an input port (21) into which a document is inserted, a shredding unit (30) installed inside the main body (20) and connected to the input port (11) to cut the document into a predetermined horizontal and vertical length, and a collection container (40) provided at the bottom of the shredding unit (30) to temporarily collect the shredded material.

[0031] The collection container (40) may be formed in the shape of a cuboid with an open top surface so as to collect the cutting debris that falls from the shredding section (30).

[0032] The cutting section (30) may include a first rotation axis (51) and a second rotation axis (52) arranged parallel to each other, and a plurality of pairs of cutters (50) continuously assembled to intersect the first rotation axis (51) and the second rotation axis (52). The first and second rotation axes (51, 52) may each have a cross-section formed in a polygonal shape, such as a hexagonal shape.

[0033] And the cutting section (30) may further include a spacer (60) installed between each cutter (50) to maintain the spacing between each cutter (50), and a ring installed in the center of each spacer (60) and installed on the first and second rotation axes (51, 52).

[0034] In addition, the sedan part (30) may include a driving motor (31) that generates driving force, a rotating gear (32) that is installed at one end of a first rotating shaft (51) and receives driving force generated from the driving motor (31) and rotates, a first gear (33) that is installed at one end of a first rotating shaft (51) and receives rotational force from the rotating gear (32), and a second gear (34) that is installed at one end of a second rotating shaft (52) and receives rotational force from the first gear (33).

[0035] The rotary gear (32) may be installed to mesh with the drive gear (35) installed on the output shaft of the drive motor (31), or may be connected by a connecting means such as a belt or chain.

[0036] The drive motor (31) can be a DC motor, a brushless motor, etc., and it is sufficient if the rotational speed of the drive motor (31) can be controlled, and is not specifically limited.

[0037] Here, as the first rotation axis (51) and the second rotation axis (52) are formed with the same cross-sectional shape, the configuration of each cutter (50) and spacer (60) connected to the first rotation axis (51) and the second rotation axis (52), respectively, is identical.

[0038] For example, the cutter (50) is formed in a roughly circular shape, and a coupling hole is formed in the center of the cutter (50) to be coupled to each rotation axis (51, 52), and a plurality of cutting sections formed in a sawtooth shape may be provided on the outer surface of the cutter (50) so as to be able to cut documents.

[0039] When viewed from the side, the spacer (60) has a cross-section that is approximately a semicircular or trapezoidal shape, with the opposing surfaces formed convexly. A ring coupling hole may be formed in the convex inner portion of the spacer (60) to which the ring installed on each rotation axis (51, 52) is coupled. Additionally, shaft coupling holes may be formed in the upper and lower portions of the outer part of the spacer (60) to which a plurality of first and second support shafts (62, 63) supporting the upper and lower portions of the spacer (60) are coupled.

[0040] In addition, a pair of side frames (70) on which first and second rotation axes (51, 52) are installed may be installed at both ends of the section (30), as shown in FIGS. 2 and 3.

[0041] A pair of side frames (70) are formed in a roughly plate shape and can be extended in the front-rear direction to cover both sides of the first and second rotation axes (51, 52) and the drive motor (31).

[0042] In each of these pairs of side frames (70), a pair of first installation holes in which first and second rotation axes (51, 52) are installed, and a plurality of second installation holes in which a plurality of first and second support axes (62, 63) are installed may be formed.

[0043] And, among the pair of side frames (70), on one side, for example, the side frame (70) positioned on the right side when viewed in FIG. 2, a third installation hole may be further formed in which the output shaft of the drive motor (31) is installed.

[0044] Meanwhile, a document shredder (10) with a guide applied according to a preferred embodiment of the present invention further includes a guide unit (80) that provides a movement path for a document fed through an input port (21) and covers the upper and front and rear sides of a cutter (50).

[0045] The guide unit (80) may include a first guide (81) and a second guide (82) that each have a symmetrical structure and are positioned on the front and rear sides with respect to the inlet (21).

[0046] As the first guide (81) and the second guide (82) are symmetrical to each other and have the same structure, the configuration of the first guide (81) is described in detail.

[0047] The first guide (81) may include an upper guide (83) that provides a movement path to move a document inserted through the input port (21) to a position where a plurality of pairs of cutters (50) interlock with each other, and a lower guide (84) that is connected to the lower front end of the upper guide (83) and covers the front of the plurality of pairs of cutters (50).

[0048] Here, the inlet (21) is formed to be tapered in a roughly 'Y' shape so that the width in the front-rear direction narrows from the top to the bottom, and an inlet bracket (22) forming the inlet (21) may be provided on the upper cover of the main body (20).

[0049] The input bracket (22) is formed in the shape of a rectangular frame with approximately open upper and lower surfaces so that a space for a document to move inside is formed, and the lower part of the input bracket (22) can overlap with the upper part of the upper guide (83).

[0050] The upper guide (83) can be formed in a roughly cuboid shape with the front and top surfaces open.

[0051] That is, the upper guide (83) may include a horizontal section (831) arranged along the horizontal direction and a document guide section (832) bent upward from the rear end of the horizontal section (831).

[0052] And the front portion of the upper guide (83) is seated on the top of the lower guide (84), and a bent portion (833) can be formed by bending upward or downward on the front portion of the upper guide (83).

[0053] Therefore, the upper guide (83) provides a movement path to move the document inserted through the input port (21) to the upper part of the multiple pairs of cutters (50) and can shield the upper surface of the cutters (50).

[0054] Here, the document guide part (832) may have a coupling hole (834) formed therein to which a coupling projection (23) formed on the input bracket (22) is coupled, so that they can be coupled to each other while overlapping on the front of the lower part of the input bracket (22).

[0055] The lower guide (84) can be formed in a roughly plate shape that is installed vertically along the approximately vertical direction.

[0056] At each end of the lower guide (84), a first flange portion (841) may be formed, which is fixed to a pair of side frames (70) using a fastening member. In addition, a second flange portion (842) on which an upper guide (83) is seated may be further formed at the top of the lower guide (84).

[0057] Of course, the present invention is not necessarily limited thereto, and the first flange portion (841) may be modified to be fixed to the side frame by means of welding or the like.

[0058] In addition, the present invention may be modified so that connecting protrusions are formed protruding from both ends of the lower guide (84), and connecting grooves are formed in each side frame to which the connecting protrusions are connected, thereby connecting the lower guide (84) and the side frame (70) by the connection of the connecting protrusions and the connecting grooves.

[0059] Therefore, the lower guide (84) can block the front of the cutter (50) and at the same time prevent the debris cut by the cutter (50) from moving upward again by the rotation of the cutter (50) and being supplied to the top of the cutter (50).

[0060] Meanwhile, as described above, the second guide (82) is provided with a structure symmetrical to the first guide (81) with respect to the input port (21).

[0061] That is, the second guide (82) may include an upper guide (83) that provides a movement path to move a document inserted through the input port (21) to the cutter (50), and a lower guide (84) that is connected to the lower part of the upper guide (83) and shields the rear of a plurality of pairs of cutters (50).

[0062] The upper guide (83) is formed in a roughly cuboidal shape with an open rear and upper surface and may include a horizontal section (831) arranged along the horizontal direction and a document guide section (832) bent upward from the front end of the horizontal section (831).

[0063] And the rear end of the upper guide (83) is seated on the upper end of the lower guide (84), and a bent portion (833) may be formed by bending upward or downward at the rear end of the upper guide (83).

[0064] Here, the document guide part (832) may have a coupling hole (834) formed therein to which a coupling projection (23) formed on the input bracket (22) is coupled, so that they can be coupled to each other while overlapping on the rear surface of the lower part of the input bracket (22).

[0065] The lower guide (84) can be formed in a roughly plate shape that is installed vertically along the direction of the upper guide.

[0066] At each end of the lower guide (84), a first flange portion (841) may be formed, which is fixed to a pair of side frames (70) using a fastening member. In addition, a second flange portion (842) on which an upper guide (83) is seated may be further formed at the top of the lower guide (84).

[0067] Therefore, the lower guide (84) can shield the rear of the cutter (50) and at the same time prevent the debris cut by the cutter (50) from moving upward again by the rotation of the cutter (50) and being supplied to the top of the cutter (50).

[0068] In addition, the lower guide (84) of the second guide (82) blocks cutting debris from being transmitted to the drive motor (31), thereby preventing damage or breakage of the drive motor (31) caused by cutting debris and minimizing the load acting on the drive motor (31).

[0069] Meanwhile, at both ends of each upper guide (83) of the first and second guides (81, 82), a pair of flange portions (835) that are seated on the upper surface of a pair of side frames (70) arranged on both sides may be further provided.

[0070] Each flange portion (835) can be firmly fixed using a fastening member while seated on the upper surface of the side frame (70).

[0071] In addition, each upper guide (83) may further have a pair of fastening pieces (836) formed on the surfaces facing each other, i.e., the inner surfaces, of each side frame (70).

[0072] For example, each fastening piece (836) is formed by pressing in the Thomson method during the manufacture of the upper guide, and can be firmly fixed to the seating piece (71) using a fastening member while seated on each seating piece (71).

[0073] Therefore, the fastening piece follows the periphery

[0074] Additionally, a first reinforcing groove (837) that reinforces the rigidity of each upper guide (83) may be formed in the horizontal portion (831) of each upper guide (83). The first reinforcing groove (837) is formed to extend long along the length direction of the upper guide (83), that is, the left-right direction, and may be formed concavely downward or upward.

[0075] And a second reinforcing groove (843) that reinforces the rigidity of each lower guide (84) may be formed on the front or rear of a pair of lower guides (84).

[0076] The second reinforcing groove (843) is formed to extend along the length direction of the lower guide (84) and can be formed concavely forward or backward.

[0077] In this way, the present invention can guide the movement of a document to an accurate position where the cutter can cut it using an upper guide, and prevent other materials other than the document from being supplied to the cutter through the input port.

[0078] In addition, the present invention can block the cutting debris from being fed back to the cutter by using a lower guide.

[0079] In addition, the present invention can increase the bonding strength of each part and reinforce the rigidity of each part by firmly connecting the bracket forming the input port and the guide unit, and firmly connecting each guide constituting the guide unit.

[0080] Accordingly, the present invention can minimize product noise by blocking the transmission of noise generated during the process of driving a cutter to shred documents to the outside, and reduce the load acting on the cutter by blocking the upward movement of cutting debris.

[0081] As a result, the present invention can improve the document shredding efficiency and the durability of each part, and extend the lifespan of the product.

[0083] Next, the coupling relationship and operation method of a document shredder with a guide applied according to a preferred embodiment of the present invention will be described in detail.

[0084] First, the operator installs multiple pairs of cutters (50) and spacers (60) on first and second rotation axes (51, 52), and connects the first and second support axes (61, 62) to each spacer (60).

[0085] Next, the operator attaches a pair of side frames (70) to both sides of the assembled cutter (50) and spacer (60). At this time, both ends of the first and second rotation axes (51, 52) and the first and second support axes (61, 62) are each attached to a pair of side frames (70).

[0086] And between the front and central portions of a pair of side frames (70), a pair of lower guides (84) are installed, which are applied to the first and second guides (81, 82), respectively. At this time, a pair of upper guides (83) are installed at the top of each lower guide (84), and the lower portion of an input bracket (22) is positioned between the upper portions of each upper guide (83). Here, a coupling projection (23) formed protruding in the front-rear direction at the lower portion of the input bracket (22) is inserted into a coupling hole (834) formed in the upper portion of each upper guide (83), that is, the document guide portion (832), and is firmly coupled.

[0087] When the assembly of the side frame (70), guide unit, and shredding unit (30) is completed through this process, the assembled frame (70) and shredding unit (30) are installed inside the main body (20), and a collection container (40) is placed at the bottom of the main body (20).

[0088] Meanwhile, when a document is inserted through the insertion port (21), each upper guide (83) of the insertion port bracket (22) and the guide unit (80) provides a movement path to move the inserted document to a position where multiple pairs of cutters (50) engage.

[0089] At this time, the input bracket (22) and the guide unit (80) block materials other than documents, particularly the user's fingers, from entering the cutter (50) inside the main body (20) through the input (21), thereby preventing safety accidents that may occur during the document shredding process.

[0090] The shredding unit (30) uses the rotational force generated by the drive motor (31) to rotate a plurality of pairs of cutters (50) to finely cut the document into pre-set horizontal and vertical lengths, and the cut debris falls to the bottom of the cutters (50) and is collected in the collection container (40).

[0091] Here, some of the cutting debris may move outward from the lower part of the cutting section (30) along the outer surface of the cutter (50) and the spacer (60).

[0092] At this time, as a pair of lower guides (84) are installed on the front and rear sides of the cutting section (30), the cutting debris falls downward due to interference with the pair of lower guides (84).

[0093] Accordingly, the present invention can prevent cutting debris from moving along the outer surface of the cutter and spatter and returning to the shredding section.

[0094] Through the process described above, the present invention provides a movement path for the inserted document by installing a guide unit connected to the input port, and can prevent cutting debris from returning to the cutter.

[0095] In other words, the present invention uses an upper guide to guide the document to an accurate position where the cutter can cut it, and prevents other materials other than the document from being supplied to the cutter through the input port.

[0096] In addition, the present invention can block the cutting debris from being fed back to the cutter by using a lower guide.

[0097] In addition, the present invention can increase the bonding strength of each part and reinforce the rigidity of each part by firmly connecting the bracket forming the input port and the guide unit, and firmly connecting each guide constituting the guide unit.

[0098] Accordingly, the present invention can minimize product noise by blocking the transmission of noise generated during the process of driving a cutter to shred documents to the outside, and reduce the load acting on the cutter by blocking the upward movement of cutting debris.

[0099] As a result, the present invention can improve the document shredding efficiency and the durability of each part, and extend the lifespan of the product.

[0100] Although the invention made by the inventors has been specifically described according to the above embodiments, the present invention is not limited to the above embodiments and can be modified in various ways without departing from the gist thereof. Industrial applicability

[0101] The present invention applies to a document shredder technology equipped with a guide that provides a movement path for the input document by installing a guide unit connected to the input port and prevents cutting debris from returning to the cutter. Explanation of the symbols

[0102] 10: Document shredder 20: Main body 21: Input port 22: Input bracket 23: Connecting projection 30: Sedan section 31: Drive motor 32: Rotating gear 33: First gear 34: Second gear 35: Drive gear 40: Collection container 50: Cutter 51, 52: 1st and 2nd rotation axes 53: Joining hole 54: Cutting part 60: Spacer 61: Ring 62,63: ​​1st and 2nd supporting axes 70: Side frame 71: Seating piece 80: Guide Unit 81: Guide 1 82: Guide 2 83: Upper guide 831: Horizontal section 832: Document Guide Section 833: Bending Section 834: Connecting hole 835: Flange section 836: Fastening piece 837: First reinforcing groove 84: Lower guide 841: First flange section 842: Second flange section 843: Second reinforcing groove section

Claims

Claim 1 The device comprises a main body forming an external shape and having an input port for inserting documents; a shredding unit installed on the inner side of the main body and connected to the input port to cut documents to predetermined horizontal and vertical lengths; and a collection container provided at the bottom of the shredding unit for temporarily collecting shredded materials. The shredding unit comprises a first rotation axis and a second rotation axis arranged parallel to each other, a plurality of pairs of cutters continuously assembled to intersect the first rotation axis and the second rotation axis, a pair of side frames each installed on the outer side of the plurality of pairs of cutters, and a guide unit that provides a movement path for documents inserted through the input port and covers the upper and front / rear sides of the plurality of pairs of cutters to prevent debris cut by the plurality of pairs of cutters from moving to the upper side of the shredding unit. The guide unit each includes a first guide and a second guide having a symmetrical structure and arranged on the front and rear sides relative to the input port. The first and second guides each provide a movement path to move documents inserted through the input port to a position where the plurality of pairs of cutters interlock with each other, and the upper surface of the cutter It includes a pair of upper guides for shielding and a pair of lower guides connected to the lower portions of the pair of upper guides and shielding the front and rear portions of the plurality of pairs of cutters, wherein each of the pair of upper guides includes a horizontal portion arranged along a horizontal direction and a document guide portion bent upward from the rear or front end of the horizontal portion, and between each document guide portion provided in the first and second guides, the lower portion of an input bracket forming the input opening is disposed, and a pair of coupling protrusions protruding in the front-rear direction are formed on the input bracket, and a pair of coupling holes formed in each of the pair of upper guides to which the pair of coupling protrusions are coupled are formed, and the lower guide is formed in a plate shape, and a pair of first flange portions fixed to a pair of side frames are formed at both ends of the lower guide.A document shredder with a guide, characterized in that a second flange portion is formed on the upper end of the lower guide, wherein the pair of upper guides are fixed in a seated state. Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 delete Claim 6 A document shredder with a guide applied, characterized in that, in claim 1, a mounting piece is formed on the inner surface of each of the pair of side frames, and a fastening piece is formed on each end of each of the pair of upper guides, which is fixed in a state of being mounted on the mounting piece. Claim 7 A document shredder with a guide applied, characterized in that, in claim 6, a first reinforcing groove portion is formed in each of the upper guides to reinforce the rigidity of the upper guides, and a second reinforcing groove portion is formed in each of the lower guides to reinforce the rigidity of the lower guides, and the first and second reinforcing groove portions are each formed to extend long along the longitudinal direction of the upper guide or the lower guide.

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