EP1862221A1 - Mechanism for compact document shredder - Google Patents
Mechanism for compact document shredder Download PDFInfo
- 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- Withdrawn
Links
Images
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.
Landscapes
- 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
- 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.
- 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.
- 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.
- 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.
- 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 cooperatingrotational cutting rollers paper shredding slot 4 between them. Therollers cutting blades 5 which slice or tear into a document passing through thecutting slot 4. The arrangement discussed thus far is well known. - At one end of the
rollers drive motor 6 mounted to the frame at 90°C to therotational cutting rollers motor 6 is transferred to thecutting rollers gearbox 7. Thegearbox 7 comprises a firstbeveled gear 8 attached to themotor shaft 11 and a second beveled gear 9 interacting with the firstbeveled gear 8 on a rotational axis 90°C to themotor shaft 11. The second beveled gear 9 meshes with areduction gear mechanism 10 the output of which is couple to thecutting rollers cutting rollers - According to the invention the
driving motor 6 of the shredder is at 90°C to the plane of thecutting rollers - 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)
- 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.
- The mechanism of claim 1 further including a reduction gearbox coupling the motor to the cutting rollers.
- 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.
- 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.
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)
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 |
-
2007
- 2007-05-29 EP EP07252190A patent/EP1862221A1/en not_active Withdrawn
Patent Citations (3)
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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18D | Application deemed to be withdrawn |
Effective date: 20080606 |