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EP0649363B1 - Agrafeuse - Google Patents

Agrafeuse Download PDF

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Publication number
EP0649363B1
EP0649363B1 EP93912935A EP93912935A EP0649363B1 EP 0649363 B1 EP0649363 B1 EP 0649363B1 EP 93912935 A EP93912935 A EP 93912935A EP 93912935 A EP93912935 A EP 93912935A EP 0649363 B1 EP0649363 B1 EP 0649363B1
Authority
EP
European Patent Office
Prior art keywords
staple
pusher
limbs
magazine
stapler according
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
EP93912935A
Other languages
German (de)
English (en)
Other versions
EP0649363A1 (fr
Inventor
Hans-Werner Groch
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.)
Louis Leitz 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6462488&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0649363(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Louis Leitz KG filed Critical Louis Leitz KG
Publication of EP0649363A1 publication Critical patent/EP0649363A1/fr
Application granted granted Critical
Publication of EP0649363B1 publication Critical patent/EP0649363B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C5/00—Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor
    • B25C5/02—Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor with provision for bending the ends of the staples on to the work
    • B25C5/0221—Stapling tools of the table model type, i.e. tools supported by a table or the work during operation
    • B25C5/0242—Stapling tools of the table model type, i.e. tools supported by a table or the work during operation having a pivoting upper leg and a leg provided with an anvil supported by the table or work
    • B25C5/025—Stapling tools of the table model type, i.e. tools supported by a table or the work during operation having a pivoting upper leg and a leg provided with an anvil supported by the table or work the plunger being manually operated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C5/00—Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor
    • B25C5/16—Staple-feeding devices, e.g. with feeding means, supports for staples or accessories concerning feeding devices
    • B25C5/1606—Feeding means
    • B25C5/1617—Feeding means employing a spring-loaded pusher

Definitions

  • the invention relates to a stapling device with a staple magazine that can be pivoted to a limited extent on a base part for receiving staples lined up in packs one behind the other, with their side legs guided between side walls of the staple magazine, and with a forehead guide that is guided in a slide guide of the staple magazine, preferably designed as a bent sheet metal part mutually parallel, against the side walls of the staple magazine slide leg against the side legs of the staple package located in the staple magazine under the action of a spring and by means of a pulling mechanism that can be lifted against the force of the spring by the clamp slide.
  • Such a stapling device designed as an upper loader is known from GB-A-2 128 127.
  • the staples in the staple magazine are pushed towards the magazine head with the aid of the clamp slide under the action of the spring, so that a staple is always available in the magazine head for ejection by a driver.
  • the upper part of the stapler is folded around the transverse axis into a loading position that is opened by 180 ° and the staple slide is carried in the slide guide of the staple magazine against the spring force.
  • the slider is retracted either via a tension spring or a pull tab.
  • a tension spring or a pull tab points the staple slide on stop tabs that protrude upwards over the top edge of the staples inserted in the magazine. It is thereby achieved that the pull tab guided in a lateral guide of the magazine walls above the staples can grip the staple slide when the upper part is opened and can lift off the staples.
  • a magazine cover is provided, which serves as a hold-down for the staples in the staple magazine. In order to be able to apply the hold-down of the staples to the outside of the bend of the clip web, it is desirable that the slide and its stop tabs projecting upward are made relatively thin-walled.
  • the staple pusher of the generic staple device has an essentially inverted U-shaped cross section with an upper wall and two opposing smooth pusher legs. Since the staple pusher has the task of pressing the staples lined up one behind the other on their legs in the direction of the magazine head, there is a risk that the staple pusher is thin-walled and there is a risk of wedging between the pusher legs and the staples in the rear region of the staple package. In this case, stapling malfunctions may occur, causing the stapler to malfunction.
  • Also known is an embodiment of a magazine of a driving tool for receiving fasteners, in which a slide is provided, the one, longer slide leg of which has a crank.
  • the known magazine is designed so that it can process both staples and nails.
  • the slide (together with the inner support) is arranged so that it can be moved transversely in the guide channel of the magazine in such a way that in one functional position (clamp transport) it bends into a side groove and its other functional position (nail transport) in the other functional position (clamp transport) engages with its shorter slide arm in a guide recess in the magazine wall.
  • staple transport which is of the essence according to the invention
  • the cranking has only a guiding function.
  • this document does not provide any suggestion for the transverse deformation of both slide legs in the direction of the inside of the leg.
  • the object of the invention is to develop a staple device of the type mentioned at the outset, in which reliable staple transport is ensured even with a thin-walled staple slide and taking into account the dimensional tolerances that occur during the manufacture of staples.
  • the solution according to the invention is based on the idea that the effective transverse dimensions of the end edges of the slide striking against the clamp legs, which are decisive for a reliable slide stop, can be enlarged by a transverse deformation in the case of thin-walled material.
  • the legs of the clamp slide have a transverse deformation at least in the area of their front edges.
  • the transverse deformation can be designed as an embossing which points towards the inside of the slide legs and thus towards the inside of the magazine.
  • the embossing expediently has a depth corresponding to 0.5 to 2 times the material thickness, so that the transverse dimension of the end edges which is significantly effective for the leg stop corresponds to 1.5 to 3 times the material thickness.
  • a preferred embodiment of the invention provides that the transverse deformation in the region of the front edge has the shape of a bulge or crank that extends over 1/3 to 2/3 of the leg length.
  • the clamp slide has a substantially U-shaped profile which is delimited by the legs and a web connecting the legs to one another, the legs having a frontal projection delimited by the front edges, the height of which suitably corresponds to 1 to 5 times the material thickness .
  • the embossing advantageously extends over the entire height of the projection. This gives the embossing an additional stiffening function. In principle, it is possible to extend the embossing over a larger part of the slide length or over the entire slide length.
  • a stop tab projecting in the thigh plane at a distance from the front edge over the top edge of the thighs is advantageously provided, which has a stop facing the end face for the pulling element designed as a pull tab.
  • the staple device shown in the drawing essentially consists of an elongated base part 14, which has an anvil plate 10 in its front area and a bearing block 12 in its rear area, a bracket magazine 22 which can be pivoted to a limited extent against a spring 16 on the bearing block 12 about a transverse axis 16 , a slide slide 28 guided in a slide guide 24 of the clip magazine 22 and supported in the direction of the magazine head 20 by a spring 26 and a clip slide 28 about the transverse axis 16 with respect to the clip slide 28 and the bottom part 14 by about 180 ° from a closed position into an opened loading position while taking the Clamp slide pivotable, a magazine cover 31 supported by a spring 30 and an upper part 34 carrying a driver 32 engaging in the magazine part 20 of the clip magazine.
  • the pull tab 36 is supported at one end by a hinge 38 on the magazine cover 31 and with its a the other end in a slide guide 40 of the clip magazine 22.
  • the pull tab 36 abuts the clamp slide 28 and takes it against the force of the spring 26 into its end position which is lifted off the staples 41.
  • the clamp slide 28 is designed as a bent sheet metal part which is essentially U-shaped in cross section, consisting of a web 42 and two perpendicular to the web bent legs 44.
  • the legs 44 On their front side abutting against the clamp legs, the legs 44 have a projection 46, the height of which corresponds approximately to 1.5 times the material thickness.
  • the legs 44 In the area of the protrusion 46, the legs 44 have embossments 48 oriented toward the inside of the leg, which have a crank-like course along the end edge 50 and, compared to the material thickness, roughly double the effective cross-sectional dimensions.
  • the legs 44 At a distance from the front edge 50, the legs 44 have stop tabs 52 projecting upward with a stop edge 54 directed toward the front edge 50 for the stop of the pull tab 36. Furthermore, a downwardly bent guide plate 56 is formed in the region of the slide web 42 with a round hole 58, with which the clamp slide 28 is guided on a round rod of the clamp magazine 22 forming the slide guide 24.
  • the invention relates to a staple device with a staple magazine 22 for receiving stacks in a row, with their side legs guided between side walls of the staple magazine 22 and with a staple guide 40 in the drawer guide 40 of the staple magazine 22, designed as a bent sheet metal part. with the front edges 50 of two mutually parallel legs 44 against the side legs of the staple package 41 located in the staple magazine under the action of a spring 26, staple slide 28.
  • the legs 44 of the staple pusher 28 have an offset-like transverse deformation 48 at least in the region of their front edges 50.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Materials For Medical Uses (AREA)
  • Sewing Machines And Sewing (AREA)

Claims (10)

  1. Agrafeuse, comprenant un chargeur d'agrafes (22) pivotant de manière limitée sur un élément de fond (14) et destiné à rerevoir des agrafes alignées en paquet les unes derrière les autres et guidées avec leurs branches latérales entre des parois latérales du chargeur d'agrafes, et un coulisseau d'agrafes (28) guide dans une glissière de translation (40) du chargeur d'agrafes (22), réalisée de préférence sous la forme d'un élément de tôle plie, qui peut être poussé, sous l'action d'un ressort (26), avec les bords frontaux (50) de deux branches de coulisseau (44) parallèles appliquées contre les parois latérales du chargeur d'agrafes (22), contre les branches latérales du paquet d'agrafes (41) placé dans le chargeur d'agrafes (22), et dégagé de celui-ci, contre la force du ressort (26), au moyen d'un mécanisme de traction (34), caractérisée en ce que les deux branches (44) du coulisseau d'agrafes (28) présentent, au moins dans la région de leurs bords frontaux (50), une déformation transversale (48) dirigés vers l'intérieur des branches de coulisseau (44).
  2. Agrafeuse selon la revendication 1, caractérisée en ce que la déformation transversale est réalisée sous la forme d'un estampage (48) dirigé vers l'intérieur des branches de coulisseau (44).
  3. Agrafeuse selon la revendication 2, caractérisée en ce que l'estampage (48) présente une profondeur qui correspond à 0,5 à 2 fois l'épaisseur de paroi.
  4. Agrafeuse selon l'une des revendications 1 à 3, caractérisée en ce que la déformation transversale (48) présente dans la région du bord frontal, la forme d'une courbure ou d'un coude.
  5. Agrafeuse selon l'une des revendications 2 à 4, caractérisée en ce que l'estampage (48) s'étend, dans la région du bord frontal (50), sur 1/3 à 2/3 de la longueur des branches.
  6. Agrafeuse selon l'une des revendications 1 à 5, caractérisée en ce que le coulisseau d'agrafes (28) présente sensiblement un profil en U délimité par les branches de coulisseau (44) et par un dos (42) reliant lesdites branches de coulisseau (44), et que les branches de coulisseau (44) présentent une saillie frontale (46) délimitée par les bords frontaux (50).
  7. Agrafeuse selon la revendication 6, caractérisée en ce que la hauteur de la saillie (46) correspond à 1 à 5 fois l'épaisseur de paroi du coulisseau d'agrafes (28).
  8. Agrafeuse selon les revendications 6 ou 7, caractérisée en ce que l'estampage (48) s'étend sur toute la hauteur de la saillie (46).
  9. Agrafeuse selon l'une des revendications 2 à 7, caractérisée en ce que l'estampage (48) s'étend sur toute la longueur du coulisseau.
  10. Agrafeuse selon l'une des revendications 1 à 9, caractérisée en ce qu'elle comprend une patte de butée (52) qui dépasse, dans le plan des branches, à distance du bord frontal (50), du bord supérieur des branches de coulisseau et présente un bord d'arrêt (54) pour l'organe de traction conformé en tirant (36), dirigé vers la face frontale.
EP93912935A 1992-07-04 1993-06-09 Agrafeuse Expired - Lifetime EP0649363B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4222003 1992-07-04
DE4222003A DE4222003A1 (de) 1992-07-04 1992-07-04 Heftklammergerät
PCT/EP1993/001464 WO1994001252A1 (fr) 1992-07-04 1993-06-09 Agrafeuse

Publications (2)

Publication Number Publication Date
EP0649363A1 EP0649363A1 (fr) 1995-04-26
EP0649363B1 true EP0649363B1 (fr) 1996-05-01

Family

ID=6462488

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93912935A Expired - Lifetime EP0649363B1 (fr) 1992-07-04 1993-06-09 Agrafeuse

Country Status (10)

Country Link
EP (1) EP0649363B1 (fr)
JP (1) JPH07508468A (fr)
CN (1) CN1081968A (fr)
AT (1) ATE137430T1 (fr)
DE (2) DE4222003A1 (fr)
ES (1) ES2087747T3 (fr)
IS (1) IS4043A (fr)
PL (1) PL171098B1 (fr)
TR (1) TR27203A (fr)
WO (1) WO1994001252A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4407045C1 (de) * 1994-03-03 1995-11-02 Bao Ruh Huang Vorrichtung zum Befestigen einer Druckklinge an einem Hefter
DE19712849A1 (de) * 1997-03-27 1998-10-01 Leitz Louis Kg Heftklammergerät
SE526929C2 (sv) * 2004-03-09 2005-11-22 Isaberg Rapid Ab Klammermagasin ingående i en häftapparat
GB2437936B (en) * 2006-05-13 2009-04-15 Apex Mfg Co Ltd Staple gun
DE102008013355B4 (de) * 2008-03-10 2019-03-28 Leitz Acco Brands Gmbh & Co Kg Heftklammergerät
CN111546803A (zh) * 2020-05-23 2020-08-18 江苏经贸职业技术学院 一种会计用装订装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2724832A (en) * 1953-09-23 1955-11-29 Wilson Jones Co Staple applying mechanism
IT8153404U1 (it) * 1981-07-02 1983-01-02 Falcone Giovanni Chiodatrice portatile
GB2128127B (en) * 1982-10-02 1986-02-26 Yasuo Yasuda Stapler
JPS6268287A (ja) * 1985-09-20 1987-03-28 海老原　代師行 ステ−プラのフイ−ダ装置
JPH0661707B2 (ja) * 1986-03-18 1994-08-17 代師行 海老原 ステ−プラ用カセツト
DE8710524U1 (de) * 1987-07-31 1987-10-01 Erwin Müller GmbH & Co, 4450 Lingen Magazin eines Eintreibgeräts zur Aufnahme von Befestigungsmitteln
JPH0224068A (ja) * 1988-07-13 1990-01-26 Yoshio Mihashi ステープラー装置並びに該装置用フレーム及び針押具
GB2240066B (en) * 1990-01-18 1993-05-05 Jang Chen Chiah Stapler

Also Published As

Publication number Publication date
IS4043A (is) 1994-01-05
DE59302462D1 (de) 1996-06-05
ES2087747T3 (es) 1996-07-16
JPH07508468A (ja) 1995-09-21
DE4222003A1 (de) 1994-01-05
EP0649363A1 (fr) 1995-04-26
PL306854A1 (en) 1995-04-18
CN1081968A (zh) 1994-02-16
PL171098B1 (pl) 1997-03-28
WO1994001252A1 (fr) 1994-01-20
TR27203A (tr) 1994-12-06
ATE137430T1 (de) 1996-05-15

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