# US 2014/0197258 A1 · Safety shredder with bin-full device and time delay > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0197258 A1 - Document ID: US20140197258A1 - Status: Published application - Kind: A1 - Application number: 13/850,993 - Filed: 2013-03-26 - Published: 2014-07-17 - Earliest claimed: 2013-01-15 - Assignees: Aurora Office Equipment Co., Ltd. Shanghai - Applicants: Aurora Office Equipment Co., Ltd. Shanghai - Inventors: Wei Liu; Yingpeng Sun; Yung Kang Tso - Web page: https://patentgrep.com/patent/US20140197258A1 ## CPC - B02C 23/04: Safety devices (in general F16P {; for rotary mills B02C13/31}) - B02C 18/0007: {specially adapted for disintegrating documents} - B02C 25/00: Control arrangements specially adapted for crushing or disintegrating - B02C 2018/0023: {Switching devices} - B02C: CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN ({household tools and machines for pulverising foodstuffs, e.g. coffee and spice mills A47J42/00; pharmaceutical mortars A61J3/02; mechanical processing of refuse and garbage B03B9/06; dressing mould materials by grinding B22C5/04}; obtaining metallic powder by crushing, grinding or milling B22F9/04; {recovery of plastics by disintegrating B29B17/00; crushing raw materials in starch making C08B30/02; beaters for papermaking D21D1/02; crushing devices specially for transport in mines E21F13/002; slag crushing devices F23J1/00; fuel milling devices in combustion apparatus F23K1/00; household devices for crushing coal F24B15/02; ice disintegrating devices F25C5/02}) ## Abstract A mechanical bin-full device for a paper shredder with a pressing plate, a contact switch, and a touching part. The pressing plate is installed at an outside portion of the shredder mechanical parts under the lower housing. One end of the pressing plate is pivots on the lower housing and the other end is free. The contact switch is fixed on the lower housing and a contact point is provided on the contact switch. The touching part is provided on the pressing plate, away from the mechanical parts. The lower housing has a through-hole under the contact point of the contact switch enabling the touching part to contact the contact point. The waste paper drives the pressing plate to turn around the joint between it and the lower housing, making the touching part touch the contact point of the contact switch and making the shredder power off. ## Claims ### Claim 1 A mechanical bin-full device for a paper shredder having mechanical parts and a lower housing, comprising: a pressing plate, installed at the outside of the mechanical parts of the shredder under the lower housing of the shredder, and one end of which is connected to the lower housing of the shredder through a pivoting connection and the other end is free end; a contact switch, fixed on the lower housing of the shredder, wherein a contact point is provided on one side of the contact switch which is near the lower housing of the shredder; and a touching part, provided on one side of the pressing plate away from the mechanical parts of the shredder, wherein the lower housing of the shredder is provided with a through-hole under the contact point of the contact switch, enabling the touching part to contact the contact point of the contact switch, and under driving of paper waste in paper waste bin of the shredder, the pressing plate turns around a joint between the pressing plate and the shredder's lower housing, making the touching part provided on the pressing plate touch the contact point of the contact switch and making the shredder power off. ### Claim 2 (depends on 1) The mechanical bin-full device of the paper shredder of claim 1, wherein the width of the pressing plate is shorter than the length of a cutter shaft of the shredder. ### Claim 3 (depends on 1) The mechanical bin-full device of the paper shredder of claim 1, wherein the cross section of the pressing plate is approximately arc-shaped, and backs to the mechanical parts of the shredder, and wherein the touching part is installed in the inside of the approximately arc- shaped pressing plate. ### Claim 4 (depends on 2) The mechanical bin-full device of the paper shredder of claim 2, wherein the cross section of the pressing plate is approximately arc-shaped, and backs to the mechanical parts of the shredder, and wherein the touching part is installed in the inside of the approximately arc-shaped pressing plate. ### Claim 5 (depends on 1) The mechanical bin-full device of paper shredder of claim 1, wherein the pressing plate has multiple holes. ### Claim 6 (depends on 2) The mechanical bin-full device of paper shredder of claim 2, wherein the pressing plate has multiple holes. ### Claim 7 (depends on 1) The mechanical bin-full device of paper shredder of claim 1, wherein the pressing plate is substantially parallel to a cutter shaft of the mechanical parts of the shredder. ### Claim 8 (depends on 1) The mechanical bin-full device of paper shredder of claim 1, wherein the touching part is provided with a tip part used for touching the contact point of the contact switch. ### Claim 9 (depends on 1) The mechanical bin-full device of paper shredder of claim 1, wherein the touching part is installed substantially perpendicular to the surface of the pressing plate. ### Claim 10 (depends on 8) The mechanical bin-full device of paper shredder of claim 8, wherein the touching part is a touching rod or a touching plate. ### Claim 11 (depends on 9) The mechanical bin-full device of paper shredder of claim 9, wherein the touching part is a touching rod or a touching plate. ### Claim 12 (depends on 1) The mechanical bin-full device of paper shredder of claim 1, wherein the contact switch is a micro-switch. ### Claim 13 A mechanical bin-full device of paper shredder with a lower housing, mechanical parts, and a waste bin, comprising: a contact switch with a contact point, wherein the contact switch provided on the lower housing of the shredder, and the contact point is contacted when the shredder head is put into the waste bin so that the shredder be powered on, and the contact point is released provided that the shredder head separates from the waste bin, enabling the shredder to be powered off; a touching device, installed on the lower housing of the shredder or the waste bin that can touch or depart from the contact point of the contact switch, thus enabling the shredder to be powered on or powered off, respectively; and a pushing device, one end of which is pivotally installed under the lower housing of the shredder at the outer side of the mechanical parts of the shredder, and the other end of which is a free end, the pushing device can push the touching device while being pushed by paper waste in the shredder waste bin, enabling the touching device to depart from the contact point of the contact switch. ### Claim 14 (depends on 13) The mechanical bin-full device of paper shredder of claim 13, wherein the pushing device is a pressing plate, on which a touching element is provided, wherein the touching element can push the touching device while paper waste in the shredder waste bin pushes the pressing plate to rotate, enabling the touching device to depart from the contact point of the contact switch. ### Claim 15 (depends on 14) The mechanical bin-full device of paper shredder of claim 14, wherein the pressing plate is an arc-shaped pressing plate, the cambered surface of which backs to the mechanical parts of the shredder, and the touching element is set inside the cambered surface of the arc- shaped pressing plate. ### Claim 16 (depends on 15) The mechanical bin-full device of paper shredder of claim 15, wherein the touching element is a touching sheet, one end of which is connected to the plate surface of the arc-shaped pressing plate, and the other end of which has a tip part that can push the touching device so that the touching device can depart from the contact point of the contact switch. ### Claim 17 (depends on 16) The mechanical bin-full device of paper shredder of claim 16, wherein the touching sheet is installed in the direction perpendicular to the plate surface of the arc-shaped pressing plate. ### Claim 18 (depends on 14) The mechanical bin-full device of paper shredder of claim 14, wherein the width of the pressing plate is less than the length of the cutter shaft of the shredder. ### Claim 19 (depends on 15) The mechanical bin-full device of paper shredder of claim 15, wherein the width of the pressing plate is less than the length of the cutter shaft of the shredder. ### Claim 20 (depends on 14) The mechanical bin-full device of paper shredder of claim 14, wherein the pressing plate has multiple holes. ### Claim 21 (depends on 15) The mechanical bin-full device of paper shredder of claim 15, wherein the pressing plate has multiple holes. ### Claim 22 (depends on 14) The mechanical bin-full device of paper shredder of claim 14, wherein the touching device is a poke rod that is installed by a support at the inner side of the shredder waste bin, the poke rod is pivotally connected to the support that is fixed to the shredder waste bin; the support is set with a first restriction member that ensures the poke rod to contact the contact point of the contact switch in the case that the shredder head is put into the waste bin. ### Claim 23 (depends on 22) The mechanical bin-full device of paper shredder of claim 22, wherein the first restriction member is a limit bar that is transversely installed on the support; the poke rod has a vertical part, one side surface of which is prop up one end of the limit bar, the relative position of the limit bar and the vertical part is set to ensure the poke rod to contact the contact point of the contact switch in the case that the shredder head is put into the waste bin. ### Claim 24 (depends on 23) The mechanical bin-full device of paper shredder of claim 23, wherein the support is equipped with a second restriction member that is used for restricting the moving distance of the poke rod upon being pushed by the touching element of the pressing plate. ### Claim 25 (depends on 24) The mechanical bin-full device of paper shredder of claim 24, wherein the second restriction member is a limit bar and is set to be parallel to the first restriction member. ### Claim 26 (depends on 14) The mechanical bin-full device of paper shredder of claim 14, wherein the touching device is a poke rod which is installed on the lower housing of the shredder through axially connecting to a branch component that is pivotally connected to the lower housing of the shredder, the inner side of the shredder waste bin is set with a support that can prop up one end of the poke rod when the drawing-type waste bin of the shredder is pushed in, thus enabling it rotate to contact the contact point of the contact switch. ### Claim 27 (depends on 26) The mechanical bin-full device of paper shredder of claim 26, wherein the support is set with a first restriction member that can prop up one end of the poke rod when the drawing-type waste bin of the shredder is pushed in, thus enabling the support rotate to contact the contact point of the contact switch. ### Claim 28 (depends on 27) The mechanical bin-full device of paper shredder of claim 27, wherein the support is equipped with a second restriction member that is used for restricting the moving distance of the poke rod upon being pushed by the touching element of the pressing plate. ### Claim 29 (depends on 13) The mechanical bin-full device of paper shredder of claim 13, wherein the touching device is a connecting rod connected to the lower housing of the shredder and can move forward and backward, the connecting rod is set with a first end and a second end, wherein the second end is equipped with an elastic element, the shredder waste bin is set with bars in the place corresponding to the position of the second end of the connecting rod, this elastic element enables the connecting rod to contact the contact point of the contact switch in the pushing of the bars set on the shredder waste bin; and further comprising: a convex part disposed under the connecting rod, which can be pushed by the pushing device when it is pushed by the paper waste inside the shredder waste bin, thus enabling the first end of the connecting rod to depart from the contact point of the contact switch. ### Claim 30 (depends on 29) The mechanical bin-full device of paper shredder of claim 29, wherein the lower housing of the shredder is disposed with a connecting rod holder, the connecting rod passes through the connecting rod holder, which has two long shaped slots correspondingly to the both sides of the connecting rod, according to the long shaped slots, the connecting rod is set with two columnar convex that could be respectively set in each long shaped slot and can slide in it. ### Claim 31 (depends on 28) The mechanical bin-full device of paper shredder of claim 28, wherein the connecting rod holder includes two identical components located correspondingly to the both sides of the connecting rod, the long shaped slot is respectively set on the two components. ### Claim 32 (depends on 29) The mechanical bin-full device of paper shredder of claim 29, wherein the connecting rod is set with restriction convex, the elastic element is a spring, one end of which props up the connecting rod holder and the other end of which props up the restriction convex. ### Claim 33 A time-delay mechanism of shredder, comprising: a time-delay switch body, wherein the time-delay switch body is provided with a forced rod and the paper waste bin of the shredder is provided with a support rib corresponding to the forced rod, wherein one end of the forced rod is connected to the time-delay switch body through pivoting connection and the other end is connected to the support rib by means of touch, wherein when the shredder head is put into the waste bin, under the driving of the support rib, the forced rod can drive the time-delay switch body to rotate and leave it in the contact state with the paper entrance, and wherein the time delay mechanism is integrated with a safety switch of power-off function. ### Claim 34 (depends on 33) The time-delay mechanism of claim 33, further comprising a contact component with a paper entrance, which includes a contact part at a paper inlet; a connecting rod; and a push button, wherein two ends of the connecting rod are fixed respectively to the contact part at the paper inlet and the push button, and the push button can drive the time-delay switch body during paper entry and make it closed. ### Claim 35 (depends on 34) The time-delay mechanism of claim 34, wherein the time delay mechanism also comprises a time-delay component, which includes a cam and a gear; the cam and the gear rotate synchronously in the same direction, and the gear is engaged with the cutter shaft gear of the shredder through a reduction gear. ### Claim 36 (depends on 35) The time-delay mechanism of claim 35, wherein: the time-delay switch body includes a contact piece, which rotates and joints to the time-delay switch body and makes the time-delay switch body closed, and the contact piece revolves and deviates from the time-delay switch body and makes it open. ### Claim 37 (depends on 33) The time-delay mechanism of claim 33, wherein: the forced rod is provided with a ring-like assembly at the end where it is connected to the support rib by means of touch; the ring-like assembly is installed on a hollow cylinder set at the lower housing of the shredder and its tail end stretches into the cavity of the hollow cylinder.