EP0489027B1 - Brieflocher mit anschlagschiene - Google Patents

Brieflocher mit anschlagschiene Download PDF

Info

Publication number
EP0489027B1
EP0489027B1 EP19900910709 EP90910709A EP0489027B1 EP 0489027 B1 EP0489027 B1 EP 0489027B1 EP 19900910709 EP19900910709 EP 19900910709 EP 90910709 A EP90910709 A EP 90910709A EP 0489027 B1 EP0489027 B1 EP 0489027B1
Authority
EP
European Patent Office
Prior art keywords
detent
paper punch
punch according
positioning rail
detent element
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.)
Expired - Lifetime
Application number
EP19900910709
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0489027A1 (de
Inventor
Theodor Pflugfelder
Siegfried Hauff
Roland Würthner
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.)
Esselte Leitz GmbH and Co KG
Original Assignee
Louis Leitz KG
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 Louis Leitz KG filed Critical Louis Leitz KG
Priority to AT90910709T priority Critical patent/ATE96363T1/de
Publication of EP0489027A1 publication Critical patent/EP0489027A1/de
Application granted granted Critical
Publication of EP0489027B1 publication Critical patent/EP0489027B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/32—Hand-held perforating or punching apparatus, e.g. awls
    • B26F1/36—Punching or perforating pliers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/01—Means for holding or positioning work
    • B26D7/015—Means for holding or positioning work for sheet material or piles of sheets

Definitions

  • the invention relates to a letter punch with a bottom part designed as a chip tray made of flexible plastic material and a displaceably arranged relative to the bottom part, having an end stop for the document to be punched, resiliently lockable stop rail in different positions.
  • the chip trays which serve as a support surface for the punch are detached from the lower part of the punch for emptying or partially folded down.
  • the base part is made of a relatively soft and resilient plastic material.
  • the stop rail is guided directly in a rectangular channel of the base part which is open on both sides and engages with corresponding locking cams in corresponding locking recesses on the transverse walls of the rectangular channel.
  • the flexible transverse walls yield unevenly when the latching cams slide past between the individual latching depressions and therefore oppose the shifting of the stop rail with differently sized resistances.
  • the locking cams in the soft plastic material of the transverse walls are inaudible and, especially when you quickly move the stop rail, do not noticeably snap into the locking recesses, if the operator is used inattentively there is a risk of moving the stop rail beyond the prescribed locking position and thereby punching the paper in the wrong place .
  • the invention is therefore based on the object to improve the known letter punch in such a way that a uniform and noticeable locking of the stop rail is ensured in all locking positions.
  • the invention is based on the idea of making the locking connections between the stop rail and the base part evenly strong and easier to feel by suitable material pairing or constructive training in the locking area, without, however, impairing the slip resistance of the contact surface and the detachability of the base part.
  • the stop rail is guided in a latching piece which can be inserted into a recess in the bottom part and anchored immovably in the recess and can be latched in different positions with the latching piece.
  • the locking piece and the stop rail are advantageously made of differently hard plastic materials that are harder than the plastic material of the base part.
  • the locking piece expediently consists of a plastic material that is harder than the plastic material of the stop rail.
  • the preferred material pairing for the locking piece is polyoxymethylene (POM) and a modified polystyrene for the stop rail.
  • the stop piece which is latched in the locking piece and has a U-shaped cross section rests with the lower edges of its side walls against the bottom of the locking piece which is U-shaped in cross section and with the outer surfaces of its side walls against the inner surfaces of the locking piece side walls.
  • a preferred embodiment of the invention provides that the side walls of the locking piece each have an elastically deformable transverse to the side wall surface, separated by an elongated opening from the bottom of the locking piece material bridge with a locking cam formed on the inner surface of the material bridge.
  • the opening is expediently limited on the outside by the inner surface of the side wall which is extended to the underside of the locking piece base.
  • the arrangement of the locking cams on a material bridge allows for the given material pairing of the stop rail and locking piece by varying the opening length Optimization of the spring force or the elasticity of the snap connection.
  • the side walls of the stop rail advantageously have latching depressions on their outer surfaces for the engagement of the latching cams formed on the material bridges of the latching piece.
  • the locking piece has on its outer end face facing the stop of the stop rail two shoulders projecting over the outer surface of the locking piece side walls, which shoulders together with at least one locking projection projecting over the underside of the locking piece bottom, provided with an inclined surface and a steep rear flank ensure anchoring in the base part without play.
  • the locking piece expediently rests with the rear flank of the locking projection against a recess edge in the base part and with the shoulders against an outer wall of the base part.
  • the latching projection resting against the recess edge in the bottom part is held in position by at least one supporting cam which projects in the region of the latching projection beyond the upper edge of the latching piece side walls and which rests against a material bridge of the bottom part when the latching piece is anchored.
  • a stop cam is formed on the top of the locking piece base, which at a distance from the inside when the locking cams snap into the stop-side first recesses of the stop rail against one that connects the side walls of the stop rail cross bar arranged from the stop.
  • the stop cam can be arranged on the end face of the locking piece facing the stop.
  • the locking piece has a molded-in area in the area of the material bridges on the top of the locking piece bottom, when the locking cams snap into the insertion-side first locking recesses of the stop rail against an insertion-side Stop cams abutting the front side wall of the stop rail.
  • the end faces of the stop cams on the insertion side are appropriately beveled.
  • the stop rail in the locking piece is at the top by at least two, in the area of the upper edges of the locking piece side walls opposite each other in pairs, each projecting inwards stepped guide edge of the stop rail engaging guide cams held and guided.
  • Two pairs of guide cams arranged on the material bridges at a distance from one another are expediently provided.
  • the stop rail expediently has an inclined surface inclined towards the end face at its end opposite the stop.
  • the punch hole base part 10 shown in FIGS. 1 and 2 can be snapped onto the lower part of a punch hole punch (not shown) from below. It forms a schnitzel pan 12 and serves with its bottom 13 as a non-slip support surface for the letter punch.
  • a locking piece 16 is anchored non-displaceably in a recess in the bottom part 10 designed as a rectangular channel 14.
  • a stop rail 18 with a stop 20 for the document to be punched is displaceable and can be snapped into positions corresponding to several different paper formats.
  • the rear part of the base part 10, which forms the chip pan 12 can be folded down from the lower part of the hole by a bending axis 21 and has interrupted side walls 22 ′, 22 ′′ for folding down in the region of the bending axis 21.
  • the chip pan 12 is provided with a button-shaped actuating element 24 which can be releasably latched onto the lower part of the punch.
  • Two viewing windows 26 make it possible to check the filling level of the paper chips in the chip tray 12 from the outside.
  • the front part of the base part 10 has two transverse walls 30, 32 which are parallel to its front edge 28 and are arranged at a distance from one another, which are formed both on the side wall parts 22 ′′ and on the base 13 and on their upper and lower edges by material bridges 36, 38 , 40, 42, 44 are connected to one another.
  • the material bridges 36, 38 between the upper edges of the transverse walls 30, 32 are each offset in the longitudinal direction with respect to the material bridges 40, 42, 44 between the lower edges of the transverse walls 30, 32.
  • Two further material bridges 46 and 48 in the area of the side wall parts 22 ′′ delimit two front openings of the rectangular channel 14 formed by the transverse walls and the material bridges.
  • Reinforcing ribs 50 arranged on the outer surfaces of the transverse walls 30, 32 serve to stiffen the rectangular channel 14.
  • the locking piece 16 which can be anchored in the rectangular channel 14 and which is shown in FIGS. 5 a to d has a U-shaped cross section and essentially consists of two side walls 52, 54 and a locking piece base 56 connecting the side walls 52, 54.
  • the locking piece 16 At its stop 20 of the stop rail 18 facing the outer end face is the locking piece 16 with two shoulders 60, 62 projecting beyond the outer surfaces of the locking piece side walls 52, 54 and in the area of the opposite inner end face with two overhanging the underside of the locking piece bottom 56, an inclined surface 64 and a steep rear flank 66 having locking projections 68.
  • existing locking piece 16 can be inserted together with the stop rail 18 into the rectangular channel 14 and anchored there.
  • the shoulders 60, 62 rest against the side walls 22 ′′ of the base part 10 from the outside, while the rear flanks 66 of the latching projections 68 engage behind the inner edge of the material bridge 42.
  • the locking piece 16 is thus anchored in the rectangular channel 14 without play.
  • a supporting cam 70 projecting beyond the upper edge of the locking piece side walls 52, 54 lies against the underside of the material bridge 36 and bends it slightly upwards.
  • the support cams 70 and thus also the locking projections 68 are pressed down and thus held in their anchoring.
  • the height of the rear flanks 66 of the latching projections 68 corresponds exactly to the material thickness of the material bridge 42, so that the latching projections 68 do not project downward beyond the contact surface of the base part 10.
  • the stop rail 18 shown in FIGS. 4 a to d likewise has an approximately U-shaped cross section and lies with the free edges 72 of its side walls 74, 76 against the locking piece base 56 and with its outer surfaces 78, 80 against the inner surfaces of the locking piece side walls 52 , 54 at.
  • the stop rail 18 is moved upwards by two guide cam pairs 59, 61 arranged at a distance from one another in the region of the upper edges of the locking piece side walls 52, 54, the pairs of these inwards protruding cams engage in stepped guide grooves 58 of the stop rail 18 in their guidance.
  • the stop rail 18 consists of a softer plastic material than the locking piece 16, for example of modified polystyrene. Due to the difference in hardness between the stop rail 18 and the locking piece 16, the mutual abrasion can be reduced and thus the service life of both parts can be extended.
  • the locking piece 16 has two locking cams 82, 84 integrally formed on the inner surfaces of its side walls 52, 54, each of which at one of the predetermined intervals from the outside in the side walls 74, 76 of the stop rail 18 are molded-in recess pairs 85a, 85b , 85c, 85d, 85e or 85f.
  • the side walls 52, 54 of the locking piece 16 in the area of the locking cams 82, 84 are separated from the locking piece bottom 56 by two elongated openings 86, 88, which extend outwards through the inner surfaces of the locking piece bottom 56, which are extended to the underside of the locking piece bottom 56 Side walls 52,54 are limited.
  • the material bridges 90, 92 formed within the side walls can be resiliently bent outwards as soon as the locking cams 82, 84 are pushed out of one of the locking recess pairs 85a, 85b, 85c, 85d, 85e or 85f when the stop rail 18 is moved.
  • the elastic spring force can be determined by the length of the openings 86, 88 and by the height and wall thickness of the locking piece side walls 52, 54 the locking cams 82, 84 which are lifted out of the locking recesses when the stop rail 18 is moved against its side walls 74, 76 can be set.
  • a stop cam 94 is formed on the top of the catch piece bottom 56, which against the inside when the catch cams 82, 84 snap into the stopper pair 85a on the stop side arranged at a distance from the stop 20, the transverse walls 96 connecting the side walls 74, 76 of the stop rail 18 (FIG. 2).
  • Another stop cam 98 projecting upward in the region of the locking cams 82, 84 above the locking piece base 56 lies when the locking cams 82, 84 engage in the first locking recesses 85f on the insertion side against an insertion-side end wall 100 of the stop rail 18 and thereby secures the stop rail 18 against complete pull-out.
  • the end faces of both stop cams 94 and 98 are chamfered, so that the stop rail 18 can be removed without breaking off the stop cams 94, 98 if necessary.
  • the end wall 100 slides over the inclined surfaces of the stop cams 98 and 94 while lifting the end of the stop rail on the insertion side.
  • the stop rail 18 has an inclined surface 102 which is inclined towards the front side wall 100 and which facilitates the insertion of the stop rail 18 into the outlet-side opening of the rectangular channel 14 and prevents the stop rail 18 from striking the web 48 is and hooked between the bottom part 10 and the punch base.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Sheet Holders (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Push-Button Switches (AREA)
  • Supports Or Holders For Household Use (AREA)
  • Slide Fasteners (AREA)
  • Sanitary Thin Papers (AREA)
EP19900910709 1989-08-21 1990-07-06 Brieflocher mit anschlagschiene Expired - Lifetime EP0489027B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90910709T ATE96363T1 (de) 1989-08-21 1990-07-06 Brieflocher mit anschlagschiene.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3927501 1989-08-21
DE3927501 1989-08-21

Publications (2)

Publication Number Publication Date
EP0489027A1 EP0489027A1 (de) 1992-06-10
EP0489027B1 true EP0489027B1 (de) 1993-10-27

Family

ID=6387497

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900910709 Expired - Lifetime EP0489027B1 (de) 1989-08-21 1990-07-06 Brieflocher mit anschlagschiene

Country Status (7)

Country Link
EP (1) EP0489027B1 (ja)
JP (1) JPH0818270B2 (ja)
KR (1) KR940005319B1 (ja)
CN (1) CN1019771B (ja)
DE (1) DE59003267D1 (ja)
ES (1) ES2045935T3 (ja)
WO (1) WO1991002636A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007027818A1 (de) 2007-01-23 2008-07-31 Erwin Müller GmbH Locher
WO2009065685A1 (de) * 2007-11-20 2009-05-28 Esselte Leitz Gmbh & Co Kg Papierlocher

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2384737A (en) * 2002-01-31 2003-08-06 Acco Uk Ltd Hole punch having a telescopic paper guide
JP2011224691A (ja) * 2010-04-16 2011-11-10 Carl Manufacturing Co Ltd 位置合せ用サイドゲージ

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3740425A1 (de) * 1987-11-28 1989-06-15 Leitz Fa Louis Brieflocher mit einer auf ein locherunterteil aufgerasteten schnitzelwanne

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB581433A (en) * 1945-03-29 1946-10-11 Shannon Ltd Improvements in paper perforators of the hand-lever and punches type

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3740425A1 (de) * 1987-11-28 1989-06-15 Leitz Fa Louis Brieflocher mit einer auf ein locherunterteil aufgerasteten schnitzelwanne

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007027818A1 (de) 2007-01-23 2008-07-31 Erwin Müller GmbH Locher
DE102007027818B4 (de) * 2007-01-23 2009-01-02 Erwin Müller GmbH Locher
WO2009065685A1 (de) * 2007-11-20 2009-05-28 Esselte Leitz Gmbh & Co Kg Papierlocher
DE102007055610A1 (de) 2007-11-20 2009-05-28 Esselte Leitz Gmbh & Co. Kg Papierlocher

Also Published As

Publication number Publication date
ES2045935T3 (es) 1994-01-16
CN1019771B (zh) 1992-12-30
WO1991002636A1 (de) 1991-03-07
EP0489027A1 (de) 1992-06-10
DE59003267D1 (de) 1993-12-02
CN1049626A (zh) 1991-03-06
JPH0818270B2 (ja) 1996-02-28
KR940005319B1 (ko) 1994-06-16
KR920700858A (ko) 1992-08-10
JPH06503516A (ja) 1994-04-21

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