EP0649364B1 - Agrafeuse - Google Patents

Agrafeuse Download PDF

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Publication number
EP0649364B1
EP0649364B1 EP93912936A EP93912936A EP0649364B1 EP 0649364 B1 EP0649364 B1 EP 0649364B1 EP 93912936 A EP93912936 A EP 93912936A EP 93912936 A EP93912936 A EP 93912936A EP 0649364 B1 EP0649364 B1 EP 0649364B1
Authority
EP
European Patent Office
Prior art keywords
magazine
staple
staple magazine
cap part
side walls
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
EP93912936A
Other languages
German (de)
English (en)
Other versions
EP0649364A1 (fr
Inventor
Hans-Werner Groch
Moritz Steiner
Klaus Baumgartner
Joachim Eisenhardt
Wolfgang Sahl
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=6462487&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0649364(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 EP0649364A1 publication Critical patent/EP0649364A1/fr
Application granted granted Critical
Publication of EP0649364B1 publication Critical patent/EP0649364B1/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
    • B25C5/16—Staple-feeding devices, e.g. with feeding means, supports for staples or accessories concerning feeding devices
    • B25C5/1606—Feeding means
    • B25C5/161—Feeding means employing a spring-loaded puller
    • 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

Definitions

  • the invention relates to a stapler with an elongated, in the front area an anvil plate-carrying bottom part, with a to a bearing block in the rear area of the bottom part pivotable to a limited extent about a transverse axis, working according to the loader principle, with a guided in a slide guide of the staple magazine the head part of which is spring-supported clamp slide, with a pivotable around the transverse axis with respect to the clamp magazine and the base part about 180 ° from a closed position into an opened loading position while taking the clamp slide with it, a spring-supported magazine cover and a driver part engaging in the head part of the clamp magazine, which stands in its unfolded position under the action of a tension spring or pull tab acting on the clamp slide, and with a latching mechanism for releasably latching the cap part on the bottom part in its loading position ung.
  • a stapler of this type has become known on the market due to its obvious prior use. Similar stapler devices, which, however, do not have a latching mechanism for releasably latching the cap part in its opened loading position, are known from GB-A-2 128 127 and DE-B-1 151 243.
  • the staples located in the staple magazine are underneath with the aid of the staple slide the action of a spring pushed in the direction of the head part so that a staple is always available in the head part for ejection by the driver.
  • the cap part is folded around the transverse axis into its loading position which is opened by 180 ° and the clamp slide is carried in the slide guide of the clamp magazine against the spring force.
  • the slider is retracted either via a tension spring or a pull tab.
  • the cap part is under the direct or indirect action of the spring acting on the clamp slide, which tries to pivot the cap part back into its closed position.
  • the cap part In order to avoid an unwanted pivoting back of the cap part, it is already known to releasably lock the cap part in its opened loading position by means of a locking mechanism with the base part.
  • a locking mechanism for example, the transverse lower edge of the cap part rear wall, which is located in the closed position above the transverse axis, is latched in the opened loading position at a latching point of the bearing block located at a corresponding distance below the transverse axis.
  • the invention has for its object to improve the known stapler of the type mentioned in such a way that safe handling during the loading process is guaranteed without the risk of injury.
  • the solution according to the invention is primarily based on the idea that the base part on the rear of the bearing block is delimited by a rear, preferably vertical, boundary wall, that the transverse axis runs essentially in the plane spanned by the outer surface of the rear boundary wall, that the cap part comes on has at its rear end coaxial to the transverse axis, encompassing the transverse axis in sections like a hinge, projecting beyond the plane of the rear boundary wall, and that a narrow passage gap for the partially cylindrical bearing cover is arranged between the rear boundary wall on the bottom part side and the cap part.
  • the passage gap has a gap width which is invariable when the cap part is pivoted and which should be less than 4 mm in the entire pivoting range in order to avoid pinching a finger in any case.
  • a latching step or recess arranged on the outer surface of a partially cylindrical bearing cover section and pivotable through the passage gap when the cap part is pivoted, and a latching step or recess arranged on the bottom part or bearing block and accommodating the latching cam in the opened loading position of the cap part are provided.
  • This type of snap-in connection is particularly suitable for top-loading devices with spring return.
  • latching members engaging in the clip magazine in the rear area of the magazine side walls near the top edge, behind which the pull tab in its end position with the cap part open can be snapped in with the side edges of a tab part immersed in the clip magazine.
  • the latching members can be designed as stamped cams molded into the side walls, the clip magazine being elastically expandable on its side walls during the latching process.
  • the latching members are designed as latching balls which extend through transverse bores in the side walls and are mounted in these, and which are arranged on the Bearing the outside of the side walls against an elastically flexible or resilient abutment, preferably designed as a metallic frame part.
  • stamped cross holes are provided on the inside of the side wall.
  • the staple devices shown in the drawing consist essentially of an elongated, in its front area having an anvil plate 10 and in its rearward area a bearing block 12 bearing base part 14, on the bearing block 12 about a transverse axis 16 from a raised position from the base part 14 with his Head part 20 in the direction of the anvil plate 10 against the force of a spring 18 limitedly pivotable clamp magazine 22, a clamp slide 28 guided in a slide guide 24 of the clamp magazine 22 and supported in the direction of the head part 20 by a spring 26, as well as a around the transverse axis 16 with respect to the clamp magazine 22 and the bottom part 14 by about 180 ° from a closed position (Fig. 2a, 4a) in an opened loading position (Fig.
  • a pull tab 36 is additionally provided, which is guided at one end by means of a hinge 38 on the magazine cover 31 and at the other end 40 in a slide guide 41 of the clip magazine 22, and which strikes against the clamp slide 28 when the cap part 34 is opened and takes it against the force of the spring 26 into its end position which is lifted off the staples 43.
  • the bottom part 14 is delimited on the back of the bearing block 12 by a rear boundary wall 42.
  • the transverse axis 16 runs essentially in the plane spanned by the vertical outer surface of the rear boundary wall 42.
  • the cap part 34 which is made of plastic, has at its rear end a partially cylindrical bearing cover 44 which is coaxial with the transverse axis 16 and partially hinge-like around the transverse axis 16 and projects outward beyond the plane of the rear boundary wall. Between the boundary wall 42 and the cap part 34 there is a narrow passage gap 46 for the partially cylindrical bearing cover 44, the gap width of which is less than 4 mm and remains constant when the cap part is pivoted. Outside the part-cylindrical bearing cover 44, the cap part 34 has at its rear end a wall piece 48 aligned with the bottom wall 42 on the bottom part in the closed state of the cap part, on the lower edge of which the bearing cover 44 is formed.
  • an outwardly protruding locking cam 50 is formed on a section of the partially cylindrical bearing cover 44, which protrudes outwards when the cap part 34 is closed and, when the cap part 34 is opened, passes through the passage gap 46 and behind one Latching step 52 of the partition 54 on the bottom part engages. This ensures that the spring-loaded opened cap part 34 can not accidentally close when loading.
  • This latching device is particularly suitable for the relatively light top-loading staplers with spring return 26 of the clamp slide 28.
  • the locking device for the opened cap part 34 consists of two locking members 56 engaging in the rear part in the clip magazine 22, behind which the pull tab 36 in their End position when the cap part 44 is opened can be snapped into place with the side edges of its tab part 40 which dips into the clip magazine 22.
  • the locking members 56 can either be formed as embossing cams formed in the side walls 58 of the clip magazine 22 (FIG. 5a) or as locking balls (FIG. 5b) which extend through transverse bores in the side walls 58 and are supported on the outside by an elastically flexible or resilient abutment 60 his. In the latter case, the transverse bores on the inside of the side wall are appropriately cone-shaped.
  • the invention relates to a staple device with a clamp magazine 22 which is mounted on a bearing block 12 of the bottom part 14 to a limited extent and which is pivotable about 180 ° relative to the clamp magazine 22 and the bottom part 14 from a closed position into an opened loading position pivotable cap part 34 carrying a magazine cover 31 and a driver 32 engaging in the clamp magazine 22.
  • the base part 14 on the rear of the bearing block 12 is delimited by a rear boundary wall 42, while the pivot axis 16 of the clamp magazine 22 and the cap part 34 is essentially in the plane spanned by the outer surface of the rear boundary wall 42.
  • the cap part 34 is provided at its rear end 48 with a partially cylindrical bearing cover 44 which is coaxial with the pivot axis 16 and partially hinge-like around the pivot axis and which extends through a narrow passage gap 46 between the boundary wall 42 and the cap part 34 which is invariable in its gap width when the cap part 34 is pivoted .
  • a latching cam 50 can be provided on a section of the partially cylindrical bearing cover 44, which can be latched onto a latching step 52 arranged inside the bearing block when the cap part 34 is opened.

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 (11)

  1. Agrafeuse comprenant un élément de fond (14) allongé portant dans sa partie antérieure une plaque d'enclume (10), un chargeur d'agrafes (22) fonctionnant d'après le principe du chargement par le dessus, monté sur un support (12) dans la partie postérieure de l'élément de fond (14), de façon a pouvoir pivoter de manière limitée autour d'un axe transversal (16), un poussoir d'agrafes (28) guidé dans un guide de poussage (24) du chargeur d'agrafes (22) et sollicité par un ressort en direction de l'élément de tête (20) de celui-ci, un élément de capuchon (34) qui, à partir d'une position de fermeture, peut être pivoté d'environ 180° autour de l'axe transversal (16) par rapport au chargeur d'agrafes (22) et à l'élément de fond (14) dans une position de chargement ouverte, avec entraînement du poussoir d'agrafes (28), et porte un recouvrement de chargeur (31) commandé par ressort et un chassoir (32) qui s'engage dans l'élément de tête (20) du chargeur d'agrafes (22), ledit élément de capuchon étant soumis, dans sa position ouverte, à l'action d'un ressort ou d'une patte de traction agissant sur le poussoir d'agrafes, et un mécanisme d'encliquetage (50, 52; 40, 56) pour le verrouillage amovible de l'élément de capuchon (34) dans sa position de chargement, caractérisée en ce que l'élément de fond (14) est délimité sur le coté arrière du support (12) par une paroi périphérique postérieure (42), que l'axe transversal (16) s'étend sensiblement dans le plan défini par la surface extérieure de la paroi périphérique postérieure (42), que l'élément de capuchon (34) présente à son extrémité postérieure (48) un recouvrement de palier (44) partiellement cylindrique orienté coaxialement à l'axe transversal (16), qui enveloppe l'axe transversal (16) par sections à la manière d'une charnière et dépasse du plan de la paroi périphérique postérieure (42), et que du côté élément de fond, entre la paroi périphérique postérieure (42) et l'élément de capuchon (34), est prévue une étroite fente de passage (46) pour le recouvrement de palier (44) de forme partiellement cylindrique.
  2. Agrafeuse selon la revendication 1, caractérisée en ce que la fente de passage (46) présente une largeur de fente invariable lors du pivotement de l'élément de capuchon (34).
  3. Agrafeuse selon la revendication 1 ou 2, caractérisée en ce que la fente de passage présente sur toute la plage de pivotement de l'élément de capuchon (34) une largeur de fente inférieure à 4 mm.
  4. Agrafeuse selon l'une des revendications 1 à 3, caractérisée en ce que le mécanisme d'encliquetage présente un ergot d'arrêt (50) conformé sur la surface extérieure de la partie partiellement cylindrique (44) du recouvrement de palier et pouvant passer par la fente de passage (46), et un gradin ou évidement d'arrêt disposé sur l'élément de fond (14) ou sur le support (12) et recevant l'ergot d'arrêt (50) dans la position de chargement ouverte de l'élément de capuchon (34).
  5. Agrafeuse selon l'une des revendications 1 à 4, comprenant une patte de traction (36) dont l'une des extrémités (38) est articulée sur le recouvrement de chargeur (31) et dont l'autre extrémité (40) s'engage dans le chargeur d'agrafes (22) délimité par deux parois latérales (58), qui est guidée dans un guide de poussage du chargeur d'agrafes (22), bute lors de l'ouverture de l'élément de capuchon (34) contre le poussoir d'agrafes (28) et entraîne celui-ci, contre la force d'un ressort (26), dans sa position extrême dans laquelle il est dégagé des agrafes (43), caractérisée en ce qu'elle comprend des organes d'encliquetage (56) qui s'engagent dans le chargeur d'agrafes (22), dans la région postérieure des parois latérales (58), à proximité du bord supérieur, et derrière lesquels la patte de traction (36) peut se verrouiller avec un élément de patte (40) dont les bords latéraux plongent dans le chargeur d'agrafes (22).
  6. Agrafeuse, comprenant un élément de fond (14) allongé portant dans sa partie antérieure une plaque d'enclume (10), un chargeur d'agrafes (22) fonctionnant d'après le principe du chargement par le dessus, monté sur un support (12) dans la partie postérieure de l'élément de fond (14), qui, dans une position de manoeuvre, peut pivoter de manière limitée avec son élément de tête (20), contre la force d'un ressort (18), autour d'un axe transversal (16), à partir d'une position de repos relevée en direction de la plaque d'enclume (10), un poussoir d'agrafes (28) guidé dans un guide de poussage (24) du chargeur d'agrafes (22) et sollicité par un ressort en direction de l'élément de tête (20), un élément de capuchon (34) qui, à partir d'une position de fermeture, peut être pivoté d'environ 180° autour de l'axe transversal (16) par rapport au chargeur d'agrafes (22) et à l'élément de fond (14), dans une position de chargement ouverte, avec entraînement du poussoir d'agrafes (28), et porte un recouvrement de chargeur (31) commandé par ressort et un chassoir (32) qui s'engage dans l'élément de tête (20) du chargeur d'agrafes (22), un mécanisme d'encliquetage (50, 52; 40, 56) pour le verrouillage amovible de l'élément de capuchon (34) dans sa position de chargement, et une patte de traction (36) dont l'une des extrémités (38) est articulée sur le recouvrement de chargeur (31) et dont l'autre extrémité (40) s'engage dans le chargeur d'agrafes (22) délimité par deux parois latérales (58), qui est guidée dans un guide de poussage du chargeur d'agrafes (22), bute lors de l'ouverture de l'élément de capuchon (34) contre le poussoir d'agrafes (28) et entraîne celui-ci, contre la force d'un ressort (26), dans sa position extrême dans laquelle il est dégagé des agrafes (43), caractérisée en ce qu'elle comprend des organes d'encliquetage (56) qui s'engagent dans le chargeur d'agrafes (22), dans la région postérieure des parois latérales (58), et derrière lesquels la patte de traction (36) peut se verrouiller avec un élément de patte (40) dont les bords latéraux plongent dans le chargeur d'agrafes (22).
  7. Agrafeuse selon la revendication 5 ou 6, caractérisée en ce que les organes d'encliquetage (56) sont réalises sous la forme de bossages matrices dans les parois latérales (58).
  8. Agrafeuse selon la revendication 7, caractérisée en ce que le chargeur d'agrafes (22) peut être élargi élastiquement sur ses parois latérales (58).
  9. Agrafeuse selon la revendication 5 ou 6, caractérisée en ce que les organes d'encliquetage (56) sont réalises sous la forme de billes d'arrêt traversant des alésages transversaux dans les parois latérales (58) et logées dans ceux-ci.
  10. Agrafeuse selon la revendication 9, caractérisée en ce que les billes d'arrêt (56) sont appliquées sur le côté extérieur des parois latérales (58) contre une butée (60) élastique flexible ou souple, conformée de préférence en élément de cadre métallique.
  11. Agrafeuse selon la revendication 9 ou 10, caractérisée en ce que les alésages transversaux présentent sur la surface intérieure des parois latérales des bossages coniques.
EP93912936A 1992-07-04 1993-06-09 Agrafeuse Expired - Lifetime EP0649364B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4222002A DE4222002A1 (de) 1992-07-04 1992-07-04 Heftklammergerät
DE4222002 1992-07-04
PCT/EP1993/001465 WO1994001253A1 (fr) 1992-07-04 1993-06-09 Agrafeuse

Publications (2)

Publication Number Publication Date
EP0649364A1 EP0649364A1 (fr) 1995-04-26
EP0649364B1 true EP0649364B1 (fr) 1996-05-22

Family

ID=6462487

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93912936A Expired - Lifetime EP0649364B1 (fr) 1992-07-04 1993-06-09 Agrafeuse

Country Status (11)

Country Link
EP (1) EP0649364B1 (fr)
JP (1) JP2644628B2 (fr)
CN (1) CN1034002C (fr)
AT (1) ATE138306T1 (fr)
DE (2) DE4222002A1 (fr)
ES (1) ES2088676T3 (fr)
HK (1) HK193996A (fr)
IS (1) IS4045A (fr)
PL (1) PL172239B1 (fr)
TR (1) TR27182A (fr)
WO (1) WO1994001253A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19650241B4 (de) * 1996-12-04 2006-05-24 Esselte Leitz Gmbh & Co. Kg Heftklammergerät
JP4062948B2 (ja) * 2002-03-29 2008-03-19 マックス株式会社 ステープラ
JP4522810B2 (ja) * 2004-10-04 2010-08-11 プラス株式会社 携帯用ステープラの後側開口部の閉塞装置

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB218127A (en) * 1923-07-25 1924-07-03 Jorgen Ulrik Ahlmann Ohlsen Process for producing impermeable, strong, and acid-proof tubes, bricks and other articles from diatomic earth or the like
DE641992C (de) * 1935-02-20 1937-02-19 Ida Skrebba Geb Stuehlinger Heftzange fuer fertige U-foermige Klammern
DE641924C (de) * 1935-12-29 1937-02-17 Industrieofenbau Fulmina G M B Zustellung fuer Trommelschmelzoefen
DE722402C (de) * 1938-06-23 1942-07-09 Siegfried Eps Dipl Ing Heftapparat
US2279584A (en) * 1938-10-04 1942-04-14 Neva Clog Products Inc Stapling machine
DE815188C (de) * 1949-10-21 1951-10-01 Karl Kammer Heftgeraet
DE834403C (de) * 1949-12-02 1952-03-20 L M K Mfg Company Ltd Heftgeraet
US2779584A (en) * 1950-09-28 1957-01-29 Selas Corp Of America Strip cooling tower
DE1151243B (de) * 1961-12-27 1963-07-11 Skrebba Werk Kommandit Ges Klammerheftgeraet
DE2534178C2 (de) * 1975-07-31 1977-08-11 Wilhelm Dahle Büro- und Zeichenge ratefabnk, 8630 Coburg Handbedienter, tragbarer Hefter, insbesondere fur Bürozwecke
GB2128127B (en) * 1982-10-02 1986-02-26 Yasuo Yasuda Stapler
DE3315133A1 (de) * 1983-04-27 1984-10-31 Heinz 2879 Dötlingen Stahl Papierhandhabungsgeraet
DE3538596A1 (de) * 1985-10-30 1987-05-07 Wawretschka Guenter Dipl Ing F Kombiniertes loch- und heftgeraet
US4666075A (en) * 1985-11-18 1987-05-19 Swingline Inc. Stapler mechanism
US4779785A (en) * 1986-10-14 1988-10-25 Plus Corporation Portable stationery device
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
DE3940863A1 (de) * 1989-08-21 1991-02-28 Mueller E Gmbh & Co Heftklammerkassette fuer heftgeraete

Also Published As

Publication number Publication date
EP0649364A1 (fr) 1995-04-26
ATE138306T1 (de) 1996-06-15
CN1086768A (zh) 1994-05-18
WO1994001253A1 (fr) 1994-01-20
JPH07508469A (ja) 1995-09-21
DE59302699D1 (de) 1996-06-27
PL306855A1 (en) 1995-04-18
HK193996A (en) 1996-11-01
JP2644628B2 (ja) 1997-08-25
CN1034002C (zh) 1997-02-12
IS4045A (is) 1994-01-05
ES2088676T3 (es) 1996-08-16
PL172239B1 (pl) 1997-08-29
TR27182A (tr) 1994-11-28
DE4222002A1 (de) 1994-01-05

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