EP0375720A1 - Outil electrique et son manchon de reduction - Google Patents

Outil electrique et son manchon de reduction

Info

Publication number
EP0375720A1
EP0375720A1 EP19880907681 EP88907681A EP0375720A1 EP 0375720 A1 EP0375720 A1 EP 0375720A1 EP 19880907681 EP19880907681 EP 19880907681 EP 88907681 A EP88907681 A EP 88907681A EP 0375720 A1 EP0375720 A1 EP 0375720A1
Authority
EP
European Patent Office
Prior art keywords
chisel
shaft
adapter
housing
socket
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.)
Withdrawn
Application number
EP19880907681
Other languages
German (de)
English (en)
Inventor
William James Lowe
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0375720A1 publication Critical patent/EP0375720A1/fr
Withdrawn legal-status Critical Current

Links

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
    • B25D17/005—Attachments or adapters placed between tool and hammer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D11/00—Portable percussive tools with electromotor or other motor drive
    • B25D11/06—Means for driving the impulse member
    • B25D11/10—Means for driving the impulse member comprising a cam mechanism
    • B25D11/102—Means for driving the impulse member comprising a cam mechanism the rotating axis of the cam member being coaxial with the axis of the tool
    • B25D11/106—Means for driving the impulse member comprising a cam mechanism the rotating axis of the cam member being coaxial with the axis of the tool cam member and cam follower having the same shape
    • 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
    • B25D17/06—Hammer pistons; Anvils ; Guide-sleeves for pistons

Definitions

  • the present invention concerns electric power tools and adapters therefor to perform chiselling operations.
  • an adapter for a portable electric drill comprising a shaft for being gripped by a chuck of the electric drill, the shaft at the end remote from the drill entering a housing, a socket for a chisel at the remote end of the housing, and a means for converting the rotary motion of the shaft into a reciprocating motion of the chisel when the housing is held non- rotational.
  • a power tool comprising an electric motor, a housing providing a socket for a chisel and a means for converting the rotary motion of the motor's shaft into a reciprocating motion of the chisel.
  • the said means generates the reciprocating motion co-axially with the shaft.
  • Figure 1 is a view half in section of an adapter according to the present invention
  • Figure 2 is a detail of a modification of Figure 1 for the adaptor to form a permanent part of a power tool
  • FIG 3 is a detail of a modification to the adapter of Figure 1,
  • FIG. 1 is a perspective view of a camming device used in the embodiments of Figures 1 and 2, and
  • a housing 11 of generally cylindrical shape. From one end projects a shaft 12 and at the other end there is a socket 14 to receive a chisel (not shown) such as those shown in Figures "to 7 with a hexagonal shank, the chisel being a frictional sliding fit in the socket.
  • the housing is made in two parts, a body 15 and a cap 16 screwed or otherwise attached to the body (if screwed, the thread is preferably left-handed).
  • the shaft is stepped so it can be inserted through the body to project from the body and be secured in and projecting from the body by a circlip 17 or other means, is journalled by an Oilite bush 18 (Oilite is a trademark), and its end within the body is formed as a camming face 19 as illustrated in Figure 4.
  • This camming face co-operates with a complementary camming face 20 on a reciprocating slider 21 to orm a means or converting the rotary motion of the shaft into a non-rotational reciprocating sliding movement.
  • This slider is journalled in the body by an Oilite bush 22, is spring loaded by a spring 23 to bring the camming faces into engagement, and is stopped from rotating by a hexagonal projection 24 fitting in the socket 14 from the inside of the housing. This projection acts as a hammer on the end of a chisel.
  • the chisel does not necessary have to have a hexagonal shank it is sufficient to it to be non-circular so it is non-rotational is a complementary hole and other things described as hexagonal could also be non-circular.
  • Hardened tool steel is used or the shaft, slider and the cap, the body can be of steel, aluminium or any other material.
  • the body and the cap conveniently have bands of knurling 25 or other roughening to facilitate being gripped by hand.
  • the body can be made of a plastics material as can the cap provided that suitable provision is made for wear, the cap could have hardened tool steel inserts.
  • the body 15 forms part of a casing of an electric motor whose shaft 26 projects into the-body and into a sleeve 27 *
  • the shaft 26 and the sleeve are joined non-rotationally by a pin or screw 28 inserted through a hole 29 in the body, to form the equivalent of .
  • a chisel 30 slides in the socket 14 in the cap 16.
  • the socket however widens out where the slider slides and the slider is larger in cross-section than the chisel and is provided with a recess 31 fitted with a liner 3 into which the chisel will grip frictionally and thus be fast with the slider although removable therefrom by a jerk.
  • Figure 4 illustrates a camming face.
  • the camming face is formed on the end of a drum-shaped part 33 of the shaft with a central blind bore 34 and is drop- forged with a plurality (say four) camming ramps 35 with say a 3 millimetre rise.
  • the camming face on the slider would be complementary.
  • Figures 5 to 7 show various forms of chisels which can be used with the invention.
  • Figure 5 shows a conventional plugging chisel.
  • Figure 6 shows a conventional wood chisel but modified with at least one grip 36 ( a sideways projection from the chisel) to enable the chisel to be held pushed back by a finger of the operator (which finger would of course be vibrated during operation but would give a restoring bias).
  • Figure 7 shows a conventional metal or masonry chisel.
  • the shaft 12 is located relative to the housing by a step on the shaft and the circlip 17 engaging the inside and outside of the Rousing respectively, the step and the inside of the housing forming a face-to-- face thrust bearing.
  • this is adequate, since there is no substantial axial force at this point.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Drilling And Boring (AREA)

Abstract

Outil électrique ou manchon de réduction destiné à être fixé sur une perceuse électrique portative comprenant un boîtier (11) dans lequel pénètre à une extrémité un arbre (12 ou 26) et à l'autre extrémité un manchon (14) destiné à recevoir un burin à queue à six pans. Un élément convertisseur de mouvement rotatif en mouvement linéaire placé dans le boîtier comporte une face en forme de came en bout d'arbre et une face analogue complémentaire sur une coulisse (21) coincée par un ressort (23) pour maintenir les faces en contact et comportant un prolongement à six pans (24) qui entre dans le manchon (14) pour bloquer le burin.
EP19880907681 1987-08-27 1988-08-25 Outil electrique et son manchon de reduction Withdrawn EP0375720A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB878720234A GB8720234D0 (en) 1987-08-27 1987-08-27 Portable drill adapter
GB8720234 1987-08-27

Publications (1)

Publication Number Publication Date
EP0375720A1 true EP0375720A1 (fr) 1990-07-04

Family

ID=10622903

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880907681 Withdrawn EP0375720A1 (fr) 1987-08-27 1988-08-25 Outil electrique et son manchon de reduction

Country Status (4)

Country Link
EP (1) EP0375720A1 (fr)
AU (1) AU2321388A (fr)
GB (2) GB8720234D0 (fr)
WO (1) WO1989001848A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH681649A5 (en) * 1990-09-07 1993-04-30 Technolizenz Ets Self-tapping screw
GB2314287B (en) * 1996-06-19 2001-01-10 John Terrance Crilly Hand held power tools
SE520217C2 (sv) 2001-10-01 2003-06-10 Thomas Rask Perkussionsanordning med medel för att avvibrera anordningen
GB2396130B (en) * 2002-12-10 2005-09-28 Black & Decker Inc Apparatus for producing self-exciting hammer action, and rotary power tool incorporating such apparatus

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1708451A (en) * 1925-03-23 1929-04-09 Firm Elektro Hammer A G Percussive tool
US1825072A (en) * 1930-02-25 1931-09-29 Keller Charles Hammering tool
FR748253A (fr) * 1932-03-21 1933-07-01 Parisienne D Outil Electr Soc Marteau mécanique pour toutes applications
US2094185A (en) * 1935-04-29 1937-09-28 Independent Pneumatic Tool Co Hammer attachment for drills
US2643649A (en) * 1949-08-20 1953-06-30 Tarwater Railway Supply Co Electric tie tamper
CH313506A (de) * 1951-11-23 1956-04-30 Lichtblau Wilhelm Schlagvorrichtung an einer Drehbohrmaschine
GB896886A (en) * 1958-12-09 1962-05-23 John M Perkins & Smith Ltd Epicyclic gearing in or for attachments to portable drilling machines
GB1031648A (en) * 1964-04-14 1966-06-02 John M Perkins & Smith Ltd Portable drilling machines
US4111060A (en) * 1976-11-22 1978-09-05 Fulvio Nerini Drill attachment for converting rotary motion to reciprocatory motion
US4304047A (en) * 1978-01-18 1981-12-08 Jesionowski Henry R Impact chisel attachment
ATE4030T1 (de) * 1978-07-21 1983-07-15 Mcpherson's Limited Blechschneidevorrichtung.
DE3522255A1 (de) * 1985-06-21 1987-01-02 Fischer Artur Dr H C In einen bohrhammer bzw. schlagbohrmaschine einspannbare vorrichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8901848A1 *

Also Published As

Publication number Publication date
GB2209134A (en) 1989-05-04
AU2321388A (en) 1989-03-31
GB8820481D0 (en) 1988-09-28
WO1989001848A1 (fr) 1989-03-09
GB8720234D0 (en) 1987-10-07

Similar Documents

Publication Publication Date Title
US5470180A (en) Reversible drill/driver tool
US6176654B1 (en) Reversible drill/driver tool
EP1078718B1 (fr) Outil de perçage et vissage
US5954463A (en) Reversible drill driver tool
US3973784A (en) Cutting tool adaptor
US5427002A (en) Power drive unit for hand tools
US5042592A (en) Power tool
JPS6044116B2 (ja) 組合せ工具
US4224969A (en) Universal chuck adaptor
US20200215675A1 (en) Rotary Hammer Drill Adapter
CN101821062A (zh) 组合式电动手持工具机
IE800462L (en) Combination hole-drilling and fastener-driving tools
SE0202326D0 (sv) Hole saw arbor
CA1117322A (fr) Outil a couper les toles
EP0343296A3 (fr) Rallonge pour tournevis à moteur
US3708238A (en) Alignment jig for electric screw driver or the like
US5282638A (en) Conversion device for drills
WO1989001848A1 (fr) Outil electrique et son manchon de reduction
GB2219958A (en) Power tool
CA1220058A (fr) Accessoire moteur pour perceuse mecanique ou outil analogue
US3812894A (en) Screw-driver
GB2181385A (en) Attachment for a hammer drill
US20240165779A1 (en) Tool bit extractor
JP2521081Y2 (ja) くり抜き作業用アタッチメント
JPH04336984A (ja) 動力式回転衝撃工具

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19900226

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LI NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19920303