EP0481946B1 - Pneumatisches Kraftwerkzeug - Google Patents

Pneumatisches Kraftwerkzeug Download PDF

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Publication number
EP0481946B1
EP0481946B1 EP91850258A EP91850258A EP0481946B1 EP 0481946 B1 EP0481946 B1 EP 0481946B1 EP 91850258 A EP91850258 A EP 91850258A EP 91850258 A EP91850258 A EP 91850258A EP 0481946 B1 EP0481946 B1 EP 0481946B1
Authority
EP
European Patent Office
Prior art keywords
housing
air
tool
handle
air supply
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
EP91850258A
Other languages
English (en)
French (fr)
Other versions
EP0481946A3 (en
EP0481946A2 (de
Inventor
Erik Roland Rahm
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.)
Atlas Copco Industrial Technique AB
Original Assignee
Atlas Copco Tools AB
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 Atlas Copco Tools AB filed Critical Atlas Copco Tools AB
Publication of EP0481946A2 publication Critical patent/EP0481946A2/de
Publication of EP0481946A3 publication Critical patent/EP0481946A3/en
Application granted granted Critical
Publication of EP0481946B1 publication Critical patent/EP0481946B1/de
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
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
    • B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
    • B25H1/0021—Stands, supports or guiding devices for positioning portable tools or for securing them to the work
    • B25H1/0028—Tool balancers

Definitions

  • This invention relates to a pneumatic power tool, in particular a pneumatic power tool comprising a housing, a motor, an air inlet passage in the housing communicating with the motor, a pistol type handle extending from the housing substantially perpendicularly to the housing and to the application direction of the tool, and an air communication means for connecting the air inlet passage to a pressure air supply conduit connected to the tool.
  • the air communication means i.e. inlet and exhaust passages
  • the pressure air supply hose as well as the exhaust air ducting hose, when used, are connected to the lower end of the handle.
  • the pressure air hose extends from a hose reel located above the working area of the tool, the air hose connected to the lower end of the handle causes an awkward handling of the tool.
  • the tool shown on the drawings is a pneumatically powered screw tightening tool which is suspended in its working position by a pressure air supply hose 6 connected to the tool.
  • the hose 6 is wound on a weight balancing hose reel 7, which is mounted on a firm overhead building structure like a beam 8.
  • the power tool shown in the drawing figures comprises a housing 10, a pressure air supply hose connection 11, a pistol type handle 12 and an output shaft 13 extending out of the front part of the housing 10.
  • the output shaft 13 is coupled to a pneumatic vane motor 14 via a mechanical power transmission (not shown).
  • connection 11 for the pressure air supply hose 6 is located at the upper end of an air inlet pipe 16 which is threaded into a socket portion 17 in the rear end portion 15 of the housing 10.
  • This socket portion 17 has a direction substantially opposite the handle 12 and perpendicular to the application direction of the tool, which is in the axial direction of the output shaft 13. This means that when the tool is used with the handle 12 directed downwards, which is normally the case, the inlet pipe 16 is directed upwards.
  • a tilting type throttle valve 20 sealingly cooperating with a seat 21.
  • the valve 20 is operated by a common pistol type trigger 22 on the handle 12.
  • the trigger 22 is provided with an extension rod 19 to reach the stem of the valve 20.
  • an air feed passage 23 leads pressure air from the valve 20 to the motor 14.
  • the exhaust air from the motor 14 is vented from the housing 10 through a number of openings 24 into an outlet casing 25.
  • the latter is mounted on top of the tool housing 10 and surrounds the air inlet pipe 16.
  • the outlet casing 25 is provided with a rotatable outlet sleeve 26 which surrounds the inlet pipe 16 in a coaxial relationship and which comprises one or more openings 27 for directing the exhaust air flow as desired.
  • a hose for ducting away the exhaust air from the tool may be attached coaxially with the pressure air supply hose.
  • Such an exhaust hose is connected directly on the outlet sleeve 26.
  • the pistol type handle 12 comprises a grip element 28 which is formed with a socket portion 29 of square cross section for fitting on a projection 30 of a corresponding cross section on the housing 10.
  • the grip element 28 is secured to the housing 10 by a screw 31 which is inserted through a stepped bore 32 in the grip element 28 and which engages a threaded bore 33 in the square projection 30.
  • the air communication means in the form of the upwardly directed inlet pipe 16 and the exhaust casing 25 provides for a more comfortable handling of the tool, since the upwardly running pressure air supply hose 6 does not interfere with the grip area around the handle 12. It is also clearly illustrated that the air hose 6 very well may be used for suspending the tool in a balancing device. Thereby, the commonly used suspension yoke on the tool and the suspension cable coupling the tool to a balancing reel may be omitted.
  • the invention is not limited to the specific inlet pipe location illustrated in the described example.
  • the invention relates to a handle separated tool housing mounted air communication means with coaxial air supply and air exhaust passages, and the very location of these means may be varied within the scope of the claims in order to adapt the tool to various working conditions.
  • the air communication means may be located at the rear end wall of the housing 10 to facilitate operation of the tool in a downward direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Portable Power Tools In General (AREA)
  • Percussive Tools And Related Accessories (AREA)

Claims (3)

  1. Pneumatisches Motorwerkzeug mit einem Gehäuse (10), einem Motor (14), einem Lufteinlaßkanal (23) in dem Gehäuse (10), der mit dem Motor (14) in Verbindung steht, einem pistolenartigen Griff (12), der sich von dem Gehäuse (10) weg im wesentlichen senkrecht zu diesem und der Anwendungsrichtung des Werkzeugs erstreckt, und Mitteln zur Luftverbindung (16, 20, 25, 26) zum Verbinden des Lufteinlaßkanals (23) mit einer äußeren Druckluft-Zufuhrleitung (6), dadurch gekennzeichnet, daß die Mittel zur Luftverbindung (16, 20, 25, 26) ein einen Luftzufuhrkanal bildendes Element (16), das an seinem einen Ende fest mit dem hinteren Teil des Gehäuses (10) an einer vom Griff (12) entfernten Stelle verbunden ist, und einen Luftauslaßkanal bildende Mittel (25, 26) mit einem Auslaßteil (26) aufweisen, welcher in einem im wesentlichen koaxialen Verhältnis zu dem den Luftzufuhrkanal bildenden Element (16) angeordnet ist, wobei sich dieses von dem Gehäuse (10) weg im wesentlichen senkrecht zum Gehäuse (10) und zur Anwendungsrichtung des Werkzeugs und im wesentlichen gegenüberliegend zum Griff (12) erstreckt.
  2. Motorwerkzeug nach Anspruch 1, dadurch gekennzeichnet, daß der Auslaßteil (26) Kupplungsmittel zum Anschließen einer Luftauslaßleitung in koaxialer Lage zu der Druckluft-Zufuhrleitung (6) aufweist.
  3. Motorwerkzeug nach Anspruch 2, dadurch gekennzeichnet, daß der Auslaßteil (26) für die Einstellbarkeit der Strömungsrichtung der Abluft drehbar ist.
EP91850258A 1990-10-19 1991-10-21 Pneumatisches Kraftwerkzeug Expired - Lifetime EP0481946B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9003356 1990-10-19
SE9003356A SE469550B (sv) 1990-10-19 1990-10-19 Pneumatiskt motordrivet verktyg

Publications (3)

Publication Number Publication Date
EP0481946A2 EP0481946A2 (de) 1992-04-22
EP0481946A3 EP0481946A3 (en) 1992-07-01
EP0481946B1 true EP0481946B1 (de) 1996-03-20

Family

ID=20380697

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91850258A Expired - Lifetime EP0481946B1 (de) 1990-10-19 1991-10-21 Pneumatisches Kraftwerkzeug

Country Status (4)

Country Link
EP (1) EP0481946B1 (de)
JP (1) JP3113711B2 (de)
DE (1) DE69118093T2 (de)
SE (1) SE469550B (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109153111B (zh) * 2016-06-03 2020-10-30 阿特拉斯·科普柯工业技术公司 具有辅助动力控制装置的脉冲扳手

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1396402A (fr) * 1964-03-09 1965-04-23 Dispositif permettant l'alimentation électrique et le refroidissement d'un moteur pour appareil à main

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2623366A1 (de) * 1976-05-25 1977-12-08 Daimler Benz Ag Aufhaengevorrichtung fuer ein arbeitsgeraet

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1396402A (fr) * 1964-03-09 1965-04-23 Dispositif permettant l'alimentation électrique et le refroidissement d'un moteur pour appareil à main

Also Published As

Publication number Publication date
EP0481946A3 (en) 1992-07-01
SE9003356D0 (sv) 1990-10-19
SE9003356L (sv) 1992-04-20
SE469550B (sv) 1993-07-26
DE69118093T2 (de) 1996-11-28
JPH06344276A (ja) 1994-12-20
EP0481946A2 (de) 1992-04-22
JP3113711B2 (ja) 2000-12-04
DE69118093D1 (de) 1996-04-25

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