EP0104360B1 - Elektromagnetisch betriebenes Einschlaggerät - Google Patents

Elektromagnetisch betriebenes Einschlaggerät Download PDF

Info

Publication number
EP0104360B1
EP0104360B1 EP83107492A EP83107492A EP0104360B1 EP 0104360 B1 EP0104360 B1 EP 0104360B1 EP 83107492 A EP83107492 A EP 83107492A EP 83107492 A EP83107492 A EP 83107492A EP 0104360 B1 EP0104360 B1 EP 0104360B1
Authority
EP
European Patent Office
Prior art keywords
hollow cylinder
ram
driver according
return
valve flap
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
Application number
EP83107492A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0104360A2 (de
EP0104360A3 (en
Inventor
Fritz Dipl.-Ing. Schädlich
Werner Dipl.-Ing. Rieker
Rainer Thaler
Klaus Klingenstein
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0104360A2 publication Critical patent/EP0104360A2/de
Publication of EP0104360A3 publication Critical patent/EP0104360A3/de
Application granted granted Critical
Publication of EP0104360B1 publication Critical patent/EP0104360B1/de
Expired 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
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/06—Hand-held nailing tools; Nail feeding devices operated by electric power

Definitions

  • the invention is based on a wrapping device according to the preamble of the main claim.
  • a wrapping device is already known from FR-A-2 405 119.
  • a disadvantage of this is the complicated valve structure, in which several parts that move against one another are required to ensure sufficient ventilation of a ram guide cylinder during the wrapping process.
  • Another disadvantage is the chosen seal with an additional, flexible sleeve against the inner wall of this large diameter guide cylinder. Friction is generated there, which must be paid for with increased wear on the cuff. This flexible sleeve cannot provide perfect guidance for the tappet either.
  • the air damping does not cause a progressive damping, as is aimed for a smooth arrival of the ram in the starting position.
  • the elastic sleeve also does not define a clear, repetitive starting position for the ram. This causes variations in the impact strength, which are also undesirable.
  • Another disadvantage of the known construction is the large overall height that is necessary to ensure a somewhat tilt-free guidance of the plunger and the sleeve in the guide cylinder with the large inner diameter.
  • the number of individual parts required is relatively high and their design is complex for production.
  • the wrapping device according to the invention with the characterizing features of the main claim has the advantage that its air damper is simply the same in construction and in service life as the other components of the device. In addition, less space is required for this air damper.
  • the selected combination of the tappet guide for the air damper and the check valve ensures ideal use of space and parts. An ideal damping characteristic with a damper effect that increases towards the end of the return stroke movement proves to be particularly advantageous.
  • a coil 2 is arranged through the cylindrical interior 3 of which a cup-shaped plunger 4 and a pusher knife 5 fixedly connected thereto are displaceably guided.
  • the plunger 4 is additionally axially displaceable on a hollow cylinder 6.
  • the widened foot 7 of the hollow cylinder 6 is firmly connected to the device housing 1.
  • An opening 8 in the device housing 1 connects the interior of the hollow cylinder 6 with the outside air.
  • a valve flap 9 is fastened to the inside of the hollow cylinder 6 in such a way that it allows air flowing in from the outside to pass through unhindered, but prevents air from escaping from the housing.
  • the space around the plunger 4 is also vented to the outside, which is shown by an opening 10 in the device housing 1.
  • a conical coil spring 11 is supported against a spring ring 12 at the end of the plunger 4 and against a disk 13 which has been pushed onto the plunger 4 in front of it.
  • the abutment for this helical spring 11 is formed by a rib 14 of the device housing 1.
  • the lower end of the butt knife 5 in the drawing is guided in a guide channel 15.
  • a magazine guide 16 for a fastener magazine 17 leads at right angles to the guide channel 15.
  • a fastening means is introduced into the guide channel 15 in front of the butt knife 5.
  • the air in the interior of the plunger 4 is slowly pressed through a throttle gap 19 formed between the plunger 4 and the hollow cylinder 6, because the valve flap 9 now closing the interior of the hollow cylinder 6 does not allow the air to escape unimpeded to the outside.
  • the return stroke movement in the direction of an arrow 20 is damped and prevents the plunger 4 from bouncing back from its contact surface on the base 7 of the hollow cylinder 6. This ensures that the wrapping device functions properly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Magnetically Actuated Valves (AREA)
EP83107492A 1982-08-28 1983-07-29 Elektromagnetisch betriebenes Einschlaggerät Expired EP0104360B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3232120 1982-08-28
DE19823232120 DE3232120A1 (de) 1982-08-28 1982-08-28 Elektromagnetisch betriebenes einschlaggeraet

Publications (3)

Publication Number Publication Date
EP0104360A2 EP0104360A2 (de) 1984-04-04
EP0104360A3 EP0104360A3 (en) 1985-07-03
EP0104360B1 true EP0104360B1 (de) 1987-10-28

Family

ID=6171976

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83107492A Expired EP0104360B1 (de) 1982-08-28 1983-07-29 Elektromagnetisch betriebenes Einschlaggerät

Country Status (5)

Country Link
US (1) US4515303A (enrdf_load_stackoverflow)
EP (1) EP0104360B1 (enrdf_load_stackoverflow)
JP (1) JPS5959361A (enrdf_load_stackoverflow)
BR (1) BR8304632A (enrdf_load_stackoverflow)
DE (2) DE3232120A1 (enrdf_load_stackoverflow)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3405906A1 (de) * 1984-02-18 1985-08-22 Robert Bosch Gmbh, 7000 Stuttgart Eintreibgeraet fuer befestigungsmittel, insbesondere elektrotacker
DE3437019C2 (de) * 1984-10-09 1994-01-20 Bosch Gmbh Robert Elektromagnetisch betriebenes Einschlaggerät mit einem Luftdämpfer
US4618087A (en) * 1985-06-12 1986-10-21 Lai Wen T High impact force stapling machine with rebounded impact force damping
US4940177A (en) * 1988-12-30 1990-07-10 Jimena Carlos L Electric stapler having electronic control circuit
GB2275227B (en) * 1993-02-23 1996-11-13 Tohoku Ricoh Co Limited Stencil duplication machine
DE19728176A1 (de) * 1997-07-02 1999-01-07 Hilti Ag Setzgerät
WO2002016085A1 (en) 2000-08-25 2002-02-28 Barber John P Impact device
US6783051B2 (en) * 2002-01-15 2004-08-31 The Fletcher-Terry Company Point driver
US20040159695A1 (en) * 2002-08-23 2004-08-19 Chu-Kuo Wang Nail stapler
US6742691B2 (en) * 2002-08-23 2004-06-01 Mu-Yu Chen Nail stapler
US6662990B1 (en) * 2003-01-03 2003-12-16 Modern Pioneer Ltd. Buffer apparatus of electrical nailing gun
CN2644112Y (zh) * 2003-07-04 2004-09-29 益卓有限公司 电动钉枪
US6857549B1 (en) * 2003-11-21 2005-02-22 Navtor Technology Corporation Nail driving gun with a shock-absorbing member
US7503400B2 (en) * 2004-01-30 2009-03-17 Arrow Fastener Co., Inc. Two shot power nailer
GB2411143B (en) * 2004-02-19 2005-12-28 Aplus Pneumatic Corp Nail stapler
DE102004008959A1 (de) * 2004-02-24 2005-09-08 Aplus Pneumatic Corp. Nagel-Tacker
US9071120B2 (en) * 2011-07-19 2015-06-30 Kanzaki Kokyukoki Mfg. Co., Ltd. Linear actuator and boring device
CN104955618B (zh) 2013-03-29 2017-08-11 日立工机株式会社 打入机
EP3028817B1 (en) * 2013-07-31 2019-03-20 Koki Holdings Co., Ltd. Driving-in machine
CN105082062B (zh) * 2014-05-05 2017-10-10 北京大风时代科技有限责任公司 电磁钉枪
US12202112B2 (en) 2021-01-20 2025-01-21 Milwaukee Electric Tool Corporation Powered fastener driver
US11878400B2 (en) 2021-01-20 2024-01-23 Milwaukee Electric Tool Corporation Powered fastener driver
US12263568B2 (en) * 2021-09-15 2025-04-01 Robert Bosch Power Tools GmbH Head valve system for air spring power tool

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1853695A (en) * 1930-02-25 1932-04-12 Clarence M Griggs Pneumatic improvement for solenoid hammers
GB920586A (en) * 1960-09-21 1963-03-06 Bourcier Carbon Christian Improvements in or relating to pneumatic shock absorbers
US3434026A (en) * 1966-12-12 1969-03-18 Fastener Corp Electrically operated reciprocating tool
CA1039001A (en) * 1975-02-13 1978-09-26 Duo-Fast Corporation Electric fastener driving tool
US4183453A (en) * 1977-04-10 1980-01-15 Swingline, Inc. Electronically operated portable fastener driving tool
DE2729002C3 (de) * 1977-06-28 1981-08-13 Erwin Müller GmbH & Co, 4450 Lingen Heft- oder Nagelgerät dessen Eintreibstößel während seines Arbeitshubes mittels Tauchanker und Magnetspule antreibbar ist
CA1124366A (en) * 1977-10-04 1982-05-25 Edward E. Barrett Electronically operated portable fastener driving tool
DE3047662C2 (de) * 1980-12-18 1985-02-21 Karl M. Reich Maschinenfabrik GmbH, 7440 Nürtingen Puffersystem bei Einschlaggeräten

Also Published As

Publication number Publication date
JPS5959361A (ja) 1984-04-05
DE3232120A1 (de) 1984-03-01
EP0104360A2 (de) 1984-04-04
EP0104360A3 (en) 1985-07-03
US4515303A (en) 1985-05-07
DE3374184D1 (en) 1987-12-03
JPH0474149B2 (enrdf_load_stackoverflow) 1992-11-25
BR8304632A (pt) 1984-04-03

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