EP0489027A1 - Perforateur de documents avec rail de positionnement. - Google Patents

Perforateur de documents avec rail de positionnement.

Info

Publication number
EP0489027A1
EP0489027A1 EP90910709A EP90910709A EP0489027A1 EP 0489027 A1 EP0489027 A1 EP 0489027A1 EP 90910709 A EP90910709 A EP 90910709A EP 90910709 A EP90910709 A EP 90910709A EP 0489027 A1 EP0489027 A1 EP 0489027A1
Authority
EP
European Patent Office
Prior art keywords
stop
locking piece
punch according
locking
letter punch
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.)
Granted
Application number
EP90910709A
Other languages
German (de)
English (en)
Other versions
EP0489027B1 (fr
Inventor
Theodor Pflugfelder
Siegfried Hauff
Roland Wuertner
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
LEITZ FA LOUIS
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 LEITZ FA LOUIS filed Critical LEITZ FA LOUIS
Priority to AT90910709T priority Critical patent/ATE96363T1/de
Publication of EP0489027A1 publication Critical patent/EP0489027A1/fr
Application granted granted Critical
Publication of EP0489027B1 publication Critical patent/EP0489027B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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 base part designed as a chip tray made of flexible plastic material and a stop rail which is arranged displaceably relative to the base part and has an end stop for the documents to be punched and resiliently lockable 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 relatively soft and resilient plastic material.
  • the stop rail is guided directly in a rectangular channel of the base part that is open on both sides and engages with corresponding locking cams in corresponding locking recesses on the transverse walls of the rectangular channel. It has been shown, however, that due to a different stiffening 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 different resistances.
  • the latching cams in the soft plastic material of the transverse walls are inaudible and, particularly when the stop slide is moved rapidly, and also not noticeably engage in the latching recesses, if inattentive operation occurs, there is a risk of moving the stop rail beyond the prescribed latching position and thereby the paper in the wrong place to punch.
  • 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 uniformly strong and easier to feel by suitable material pairing or constructive design 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 outside and can be latched in different positions with the latching piece.
  • Form impact edges, while the apron has at the distance from its lower edge protruding stops for the upper edges of the boom.
  • the booms have a partially cylindrical surface curvature coaxial to the swivel axis of the pressure lever, at least in their area overlapped by the apron on, which releases a constant gap of less than 4 mm over the entire swivel path.
  • the apron is also formed in a shell-like manner on its inner surface facing the partially cylindrical extension part.
  • the arrangement of the stops provided in accordance with the second variant of the invention makes it possible, in the region between the lower edge of the apron and the stops, to be displaced transversely on the apron between two end positions and, in one end position, engaging in the pivoting path of one of the upper boom edges as low ⁇ holder for the pressure lever trained stop slide to arrange.
  • the stop slide can preferably be locked in a latching connection at least in the end position disengaged from the pivoting path of the boom.
  • the stop slide is advantageously guided in a substantially horizontal elongated hole in the apron 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 beyond the outer surface of the locking piece side walls, which shoulders together with at least one overhanging the underside of the locking piece bottom, with an inclined surface and a steep rear flank provided locking projection ensure play-free anchoring in the bottom part.
  • 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 which bears against the recess edge in the base part is held in position by at least one supporting cam which projects in the region of the latching projection and protrudes beyond the upper edge of the latching part side walls and which is anchored against a material bridge of the bottom part when the latching element is anchored.
  • a stop cam is formed on the top of the locking piece base, which, when the locking cams snap into place, from the inside against the first locking recesses of the stop rail against one connecting the side walls of the stop rail, stops at a distance from the stop arranged cross bar.
  • the stop cam can be arranged on the end face of the locking piece facing the stop.
  • the latching piece has, from the inside, a molded-in area in the area of the material bridges on the top of the latching piece bottom, when the latching cams snap into the insertion side of the first latching recesses a stop cams adjacent to the push-in end wall of the stop rail.
  • the end faces of the stop cams on the insertion side are appropriately beveled.
  • the stop rail in the latching piece is at the top by at least two, in the area of the upper edges of the latching piece side walls opposite one another in pairs, each projecting inwards stepped guide edge of the stop rail engaging guide cam 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.
  • Figure 1 is a plan view of the bottom part of a letter hole with locking piece and stop rail.
  • FIG. 2 shows a longitudinal section through the base part according to FIG. 1 with the stop rail inserted
  • Fig. 4 d shows a cross section through the stop rail along the line AA of Fig. 1;
  • Fig. 5 d shows a longitudinal section through the locking piece.
  • 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 chip pan 12 and serves with its bottom 13 as a non-slip contact 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 documents to be punched can be displaced in the latching piece 16 and can be latched in positions corresponding to different paper formats
  • the rear part of the base part 10, which forms the chip pan 12 can be folded away from the lower part of the hole by a bending axis 21 and has interrupted side walls 22 ', 22''for folding 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 locked 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 parallel to its front edge 28 and spaced apart from one another, which are molded both on the side wall parts 22 ′′ and on the base 13 and through on their top and bottom edges
  • 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 reinforce the rectangular channel 14.
  • the locking piece 16 which can be anchored in the rectangular channel 14 and which is illustrated 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
  • POM polyoxymethylene
  • 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 locking 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. Due to the elastic restoring force of the material bridge 36, 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 Rast Gla ⁇ side walls 52,54.
  • Anschlagschie ⁇ is ne 18 by two in the area of the upper edges of the 'Rast vinegar ⁇ side walls 52,54 spaced-apart guide cam pairs 59,61 whose pairs inwardly 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. The difference in hardness between the stop rail 18 and the locking piece 16 reduces the mutual abrasion and thus extends the life of both parts.
  • the locking piece 16 has two locking cams 82, 84 formed on the inner surfaces of its side walls 52, 54, each of which is molded into the side walls 74, 76 of the stop rail 18 from the outside at one of the predetermined intervals Engage locking 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 elongate openings 86, 88, which extended outwards through the bottom of the locking piece bottom 56 Inner surfaces of the 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 lifted out of the locking recesses when the stop rail 18 moves against its side walls 74, 76 can be set.
  • a stop cam 94 is formed on the upper side of the locking piece base 56, which stops when the locking cams 82, 84 snap into the first locking recess pair on the stop side 85a strikes from the inside against a transverse web 96 arranged at a distance from the stop 20 and connecting the side walls 74, 76 of the stop rail 18 (FIG. 2).
  • Another stop cam 98 projecting upward in the area of the locking cams 82, 84 above the locking piece base 56 lies from the inside when the locking cams 82, 84 snap into the insertion-side first locking recesses 85f against an insertion-side end wall 100 of the stop rail 18 and thereby secures the stop ⁇ rail 18 against complete pulling out.
  • the end faces of both stop cams 94 and 98 are beveled, so that the stop rail 18 can be removed if necessary without breaking off the stop cams 94, 98.
  • the end wall 100 slides over the inclined surfaces of the stop cams 98 and 94 while lifting the push-in end of the stop rail.
  • 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)
  • Details Of Cutting Devices (AREA)
  • Sanitary Thin Papers (AREA)
  • Slide Fasteners (AREA)
  • Supports Or Holders For Household Use (AREA)
  • Push-Button Switches (AREA)

Abstract

Dans le cas d'un perforateur de documents comportant un fond (10) en matière plastique souple conçu comme bac à confettis, un élément à cran (16) peut être ancré dans un évidement transversal (14) du bac à confettis. Le rail fixe (18) présentant la butée (20) pour les documents à perforer peut coulisser dans l'élément à cran (16) et s'y encliqueter en différentes positions.
EP19900910709 1989-08-21 1990-07-06 Perforateur de documents avec rail de positionnement Expired - Lifetime EP0489027B1 (fr)

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 true EP0489027A1 (fr) 1992-06-10
EP0489027B1 EP0489027B1 (fr) 1993-10-27

Family

ID=6387497

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900910709 Expired - Lifetime EP0489027B1 (fr) 1989-08-21 1990-07-06 Perforateur de documents avec rail de positionnement

Country Status (7)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1950014A1 (fr) * 2007-01-23 2008-07-30 Erwin Müller GmbH Perforeuse

Families Citing this family (4)

* 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
DE102007055610A1 (de) * 2007-11-20 2009-05-28 Esselte Leitz Gmbh & Co. Kg Papierlocher
JP2011224691A (ja) * 2010-04-16 2011-11-10 Carl Manufacturing Co Ltd 位置合せ用サイドゲージ
CN117206400A (zh) * 2023-09-06 2023-12-12 广西电网有限责任公司北海供电局 一种用于配电设备打孔操作用的液压钳

Family Cites Families (2)

* 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
DE3740425A1 (de) * 1987-11-28 1989-06-15 Leitz Fa Louis Brieflocher mit einer auf ein locherunterteil aufgerasteten schnitzelwanne

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9102636A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1950014A1 (fr) * 2007-01-23 2008-07-30 Erwin Müller GmbH Perforeuse

Also Published As

Publication number Publication date
JPH0818270B2 (ja) 1996-02-28
EP0489027B1 (fr) 1993-10-27
JPH06503516A (ja) 1994-04-21
DE59003267D1 (de) 1993-12-02
KR920700858A (ko) 1992-08-10
CN1049626A (zh) 1991-03-06
CN1019771B (zh) 1992-12-30
WO1991002636A1 (fr) 1991-03-07
KR940005319B1 (ko) 1994-06-16
ES2045935T3 (es) 1994-01-16

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