EP1862221A1 - Mechanism for compact document shredder - Google Patents

Mechanism for compact document shredder Download PDF

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Publication number
EP1862221A1
EP1862221A1 EP07252190A EP07252190A EP1862221A1 EP 1862221 A1 EP1862221 A1 EP 1862221A1 EP 07252190 A EP07252190 A EP 07252190A EP 07252190 A EP07252190 A EP 07252190A EP 1862221 A1 EP1862221 A1 EP 1862221A1
Authority
EP
European Patent Office
Prior art keywords
cutting
cutting rollers
gearbox
rollers
pair
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07252190A
Other languages
German (de)
French (fr)
Inventor
Sai Mo Winsource Industries Limited Wong
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Winsource Industries Ltd
Winsource Ind Ltd
Original Assignee
Winsource Industries Ltd
Winsource Ind Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Winsource Industries Ltd, Winsource Ind Ltd filed Critical Winsource Industries Ltd
Publication of EP1862221A1 publication Critical patent/EP1862221A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B02C18/24—Drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/0007—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating documents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/0007—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating documents
    • B02C2018/0038—Motor drives

Definitions

  • the present invention relates to document shredders and more particularly to a mechanism for a compact document shredder.
  • Document shredders are well-known. They typically comprise a pair of parallel cutter rollers with a narrow slot between them.
  • the cutter rollers each have a plurality of cutting discs or blades.
  • the rollers are driven by a motor and when a document, typically of paper or light card, passes between the rollers it is shredded by the cutter discs or blades.
  • the driving motor for the cutter rollers has mounted on one end of the shredder mechanism meaning that the shredder is substantially wider than the document slot.
  • a mechanism for compact document shredder having a supporting frame mounting a pair of cooperating rotational cutting rollers defining a cutting plane for shredding a document.
  • a driving motor is mounted to the frame and is coupled to the cutting rollers for rotating the cutting rollers.
  • the driving motor is orientated on a driving axis that is orthogonal to the cutting plane.
  • the mechanism may further include a reduction gearbox coupling the motor to the cutting rollers.
  • the gearbox has a pair of beveled gears, an input shaft and an output shaft.
  • the input shaft is orthogonal to the output shaft.
  • the mechanism comprises a frame 1 to which is mounted a pair of parallel cooperating rotational cutting rollers 2, 3 defining a paper shredding slot 4 between them.
  • the rollers 2, 3 comprise a plurality of cutting blades 5 which slice or tear into a document passing through the cutting slot 4.
  • a drive mechanism comprising a drive motor 6 mounted to the frame at 90°C to the rotational cutting rollers 2, 3. Rotational driving torque of the motor 6 is transferred to the cutting rollers 2, 3 through a gearbox 7.
  • the gearbox 7 comprises a first beveled gear 8 attached to the motor shaft 11 and a second beveled gear 9 interacting with the first beveled gear 8 on a rotational axis 90°C to the motor shaft 11.
  • the second beveled gear 9 meshes with a reduction gear mechanism 10 the output of which is couple to the cutting rollers 2, 3 for rotating the cutting rollers 2, 3 during operation of the shredder.
  • the driving motor 6 of the shredder is at 90°C to the plane of the cutting rollers 2, 3 so that the shredder mechanism according to the invention is narrower than those of the prior art shredders.
  • This has advantage for compact document shredders such as those that position above an office wastepaper basket or small home or under desk type document shredders.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)

Abstract

A mechanism for a compact document shredder has a supporting frame mounting a pair of cooperating rotational cutting rollers for shredding a document therebetween, A driving motor is also mounted to the frame and coupled to the cutting roller.s for rotating the cutting rollers. The driving motor is orientated on a driving axis that is orthogonal to the cutting plane. A gearbox uouples the motor to the cutting rollers. The gearbox has a pair of beveled gears and an input shaft that is orthogonal to its output shaft.

Description

    Background to the invention 1. Field of the Invention
  • The present invention relates to document shredders and more particularly to a mechanism for a compact document shredder.
    • 2. Background Information
  • Document shredders are well-known. They typically comprise a pair of parallel cutter rollers with a narrow slot between them. The cutter rollers each have a plurality of cutting discs or blades. The rollers are driven by a motor and when a document, typically of paper or light card, passes between the rollers it is shredded by the cutter discs or blades.
  • Hitherto the driving motor for the cutter rollers has mounted on one end of the shredder mechanism meaning that the shredder is substantially wider than the document slot.
    • Summary of the Invention
  • It is an object of the present invention to overcome or substantially ameliorate the above disadvantages and/or more generally to provide an improved mechanism for a compact document shredder.
  • There is disclosed herein a mechanism for compact document shredder having a supporting frame mounting a pair of cooperating rotational cutting rollers defining a cutting plane for shredding a document. A driving motor is mounted to the frame and is coupled to the cutting rollers for rotating the cutting rollers. The driving motor is orientated on a driving axis that is orthogonal to the cutting plane.
  • The mechanism may further include a reduction gearbox coupling the motor to the cutting rollers. The gearbox has a pair of beveled gears, an input shaft and an output shaft. The input shaft is orthogonal to the output shaft.
  • Further aspects of the invention will become apparent from the following description.
    • Brief Description of the Drawings
  • A preferred form of the present invention will now be described by way of example with reference to the accompanying drawings, wherein:
    • Figure 1 is a top view of a mechanism for a document shredder according to the invention,
    • Figure 2 is an elevation view of the mechanism for the document shredder.
    Detailed Description of the Drawings
  • In the accompanying drawings there is depicted a mechanism for a compact document shredder. The mechanism comprises a frame 1 to which is mounted a pair of parallel cooperating rotational cutting rollers 2, 3 defining a paper shredding slot 4 between them. The rollers 2, 3 comprise a plurality of cutting blades 5 which slice or tear into a document passing through the cutting slot 4. The arrangement discussed thus far is well known.
  • At one end of the rollers 2, 3 is a drive mechanism comprising a drive motor 6 mounted to the frame at 90°C to the rotational cutting rollers 2, 3. Rotational driving torque of the motor 6 is transferred to the cutting rollers 2, 3 through a gearbox 7. The gearbox 7 comprises a first beveled gear 8 attached to the motor shaft 11 and a second beveled gear 9 interacting with the first beveled gear 8 on a rotational axis 90°C to the motor shaft 11. The second beveled gear 9 meshes with a reduction gear mechanism 10 the output of which is couple to the cutting rollers 2, 3 for rotating the cutting rollers 2, 3 during operation of the shredder.
  • According to the invention the driving motor 6 of the shredder is at 90°C to the plane of the cutting rollers 2, 3 so that the shredder mechanism according to the invention is narrower than those of the prior art shredders. This has advantage for compact document shredders such as those that position above an office wastepaper basket or small home or under desk type document shredders.
  • It should be appreciate that modifications and alternations obvious to those skilled in the art are not to be considered as beyond the scope of the present invention.

Claims (4)

  1. A mechanism for a compact document shredder comprising:
    a supporting frame,
    a pair of cooperating rotational cutting rollers mounted to the frame for shredding a document therebetween, the cutting rollers lying on a cutting plane,
    a driving motor mounted to the frame and coupled to the cutting rollers for rotating the cutting rollers, wherein the driving motor is orientated on a driving axis that is orthogonal to the cutting plane.
  2. The mechanism of claim 1 further including a reduction gearbox coupling the motor to the cutting rollers.
  3. The mechanism of claim 2 wherein the gearbox has an input shaft and an output shaft, the input shaft being orthogonal to the output shaft.
  4. The mechanism of claim 2 wherein the gearbox includes a pair of beveled gears, and wherein a first of the beveled gears defines an input direction of the gearbox and a second of the beveled gears defines an output direction which is ninety degrees to the input direction.
EP07252190A 2006-05-30 2007-05-29 Mechanism for compact document shredder Withdrawn EP1862221A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US44295106A 2006-05-30 2006-05-30

Publications (1)

Publication Number Publication Date
EP1862221A1 true EP1862221A1 (en) 2007-12-05

Family

ID=38461219

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07252190A Withdrawn EP1862221A1 (en) 2006-05-30 2007-05-29 Mechanism for compact document shredder

Country Status (1)

Country Link
EP (1) EP1862221A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2087608A5 (en) * 1970-05-26 1971-12-31 Sodequip
DE4104439A1 (en) * 1991-02-14 1992-08-20 Klaus Meier Drive system for cutting rollers of document shredder - drives two rollers by electric motor via worm gear with rollers connected to U=shaped steel plate
US20050279869A1 (en) * 2004-06-16 2005-12-22 Kevin Barklage Portable shredder

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2087608A5 (en) * 1970-05-26 1971-12-31 Sodequip
DE4104439A1 (en) * 1991-02-14 1992-08-20 Klaus Meier Drive system for cutting rollers of document shredder - drives two rollers by electric motor via worm gear with rollers connected to U=shaped steel plate
US20050279869A1 (en) * 2004-06-16 2005-12-22 Kevin Barklage Portable shredder

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