EP0083860B1 - Vorsatzgerät für Bohrmaschinen oder dergleichen - Google Patents

Vorsatzgerät für Bohrmaschinen oder dergleichen Download PDF

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Publication number
EP0083860B1
EP0083860B1 EP82306749A EP82306749A EP0083860B1 EP 0083860 B1 EP0083860 B1 EP 0083860B1 EP 82306749 A EP82306749 A EP 82306749A EP 82306749 A EP82306749 A EP 82306749A EP 0083860 B1 EP0083860 B1 EP 0083860B1
Authority
EP
European Patent Office
Prior art keywords
chuck
attachment
jaws
tool
projections
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
EP82306749A
Other languages
English (en)
French (fr)
Other versions
EP0083860A3 (en
EP0083860A2 (de
Inventor
Charles Glen Dunn
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
Priority to AT82306749T priority Critical patent/ATE29687T1/de
Publication of EP0083860A2 publication Critical patent/EP0083860A2/de
Publication of EP0083860A3 publication Critical patent/EP0083860A3/en
Application granted granted Critical
Publication of EP0083860B1 publication Critical patent/EP0083860B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F3/00—Associations of tools for different working operations with one portable power-drive means; Adapters therefor

Definitions

  • This invention relates to an attachment which can be used to provide a drive connection between a screwdriver or a nut-runner requiring a rotary drive and the chuck of a power drill or like tool utilising a chuck.
  • the drive attachment disclosed in the aforementioned document comprises a tubular part one end of which is adapted to engage a screwdriver bit and, the other end thereof is received over the jaws and head of a chuck and adapted to engage with the teeth of a toothed type of chuck locking ring.
  • This type of drive attachment suffers from being usable only with suitably sized chuck locking rings. It is also inherently irreversible since the locking rings are rotated in one direction to effect locking which must be the same as the direction of drive of the attachment. Rotation in the opposite direction will act to undo the locking ring and chuck.
  • a screwdriver or nut runner attachment for a power tool utilising a chuck having jaws with spaces between the jaws and which attachment comprises a tubular portion adapted to fit over a drill bit mounted in the chuck jaws of the power and having at one end a screwdriver or nut runner characterised in that the tubular portion has at its other end at least two projections which extend longitudinally with respect to the tubular portion and are circumferentially spaced to be longitudinally receivable in spaces provided between the chuck jaws for providing direct driving engagement of the attachment with the power tool.
  • the longitudinally extending lugs will usually be three orfour in number and are dimensioned so as to engage in the circumferentially disposed spaces between the three or four jaws of the chuck.
  • the attachment according to the invention may be made of metal or of a suitable plastics material, or of a combination of metal and plastics.
  • the attachment may be made to suit any size of drill bit or supplied blank (that is withoutthe centre hole forming the tubular portion so that the blank can be drilled to form the tubular portion by the bit over which it will be used to give very accurate location for precision work).
  • any size of drill bit or supplied blank that is withoutthe centre hole forming the tubular portion so that the blank can be drilled to form the tubular portion by the bit over which it will be used to give very accurate location for precision work.
  • one size of centre hole for the tubular portion say that giving 6 mm clearance
  • the end of the tubular portion remote from the drive means may have an internal or external polygonal or other non-circular configuration adapted to mate with a portion of complementary shape of a tool component to be driven by the power tool.
  • this remote end of the tubular portion may comprise an integral tool piece such as a screwdriver head.
  • the attachment shown in Figure 1 comprises a tubular portion 1 having at one end two or more longitudinally extending lugs or projections 2 which are circumferentially spaced and dimensioned so as to fit snugly into the spaces between the jaws of the chuck of a power drill when those jaws receive and are in tight engagement with a drill bit which is received within the tubular portion 1.
  • the other end of the tubular portion 1 comprises a part 3 of polygonal or other non-circular section. Over this part 3 can be fitted a complementarily shaped part 3a of for example a nut runner 5 as shown in Figure 2.
  • One or more grub screws 4 may be used for holding the attachment in place, the screw or screws bearing against the side portions of the drill bit.
  • the nut runner 5 is simply slipped over the drill bit so that the parts 3 and 3a are in engagement.
  • the ends of the lugs 2 are bevelled or rounded or otherwise shaped to facilitate ready insertion into the spaces between the jaws of the chuck.
  • the length of the lugs 2 is preferably such that the end faces 6 of the tubular portion at the base of, and circumferentially between, the lugs come into contact with the free outer end portions of the chuck jaws. It is possible that if the lugs 2 are over-long they may tend to get bent in use, hence it is advisable to make them just long enough to give a good driving engagement with the chuck jaws.
  • Each of the lugs 2 preferably has its circumferentially (or peripherally) opposed side faces 7 ( Figures 4 and 6) parallel so as to co-operate with the opposed parallel faces of adjacent chuck jaws.
  • Rotary drive from the power tool will be transmitted through one or the other of the side faces 7 of each lug.
  • the lugs 2 can have their non-driven side faces 8 sloping as indicated in Figures 7 and 8 (that is where the lugs are each in the form of a right-angled triangle the hypotenuse of which comprises the non-driven face 8 of the lug). It is believed that this triangular shape may increase the strength of the lug, although it has the disadvantage that the power tool cannot be used to drive the attachment in reverse (for example, to withdraw a screw or unscrew a nut).
  • FIG. 3 The embodiment shown in Figure 3 is similar to that in Figure 1 but the attachment is long enough to shroud the drill bit completely.
  • the attachment At the end of the tubular portion 1 remote from the lugs 2 the attachment has a recess 8 for example of hexagonal section to receive, for example, a screwdriver bit 9.
  • the end of the portion 1 could be simply shaped as an integral screwdriver head or other tool to be rotary driven.
  • the attachment according to the invention may be made by drilling a bore in a solid metal rod and then forming the lugs by a grinding operation.
  • the lugs may be first formed by a forging operation, followed by a drilling operation to produce the bore of the tubular portion.
  • the dimensions of the attachment such as the diameter of the bore of the tubular portion will vary with the size of the drill bit being used.
  • the lateral cross sectional dimensions of the lugs 2 will vary with the size of the drill bit.
  • a 5.5 mm diameter drill bit required an attachment having lugs 2 that were approximately 3 mm x 4 mm and equally spaced circumferentially.
  • the internal diameter of the tubular portion was 5.7 mm and the external diameter 10.2 mm.
  • the projections or lugs 2 are partly embedded in an outer member 18 which may be shaped somewhat in the form of a hollow screwdriver handle.
  • the member 18 may be made, for example, as an injection moulded plastics component with the lugs or projections projecting internally thereof.
  • the attachment may be secured in place on the chuck by means of one or more grub screws 15 engaging the chuck head of one or more grub screws 16 engaging the drill bit.
  • the end 17 of the member 18 remote from the chuck can be appropriately shaped (for example, hexagonal) to receive a complementarily shaped socket in a tool component to be driven.
  • the whole unit could be diecast Mazack and therefore relatively inexpensive.
  • Figure 10 shows a part of the embodiment of Figure 9 with certain parts omitted for the sake of clarity for example only one of the lugs 2 is shown.
  • the drill bit D is shown held by means of chuck jaws J.
  • the three lugs may project from a single cylindrical metal member which is itself embedded in the plastics material.
  • the drive attachment according to the invention can be used to drive any known type of screwdriver bit, for example slotted, or those known by the Trade Marks “Phillips”, “Posidrive”, “Supadrive” or “Robin- son” or a nut runner, Allen Key driver and the like, or a tap holder, die holder, chuck or collet, flexible drive countersink bit or other component which is intended to be rotary driven.
  • screwdriver bit for example slotted, or those known by the Trade Marks "Phillips”, “Posidrive”, “Supadrive” or “Robin- son” or a nut runner, Allen Key driver and the like, or a tap holder, die holder, chuck or collet, flexible drive countersink bit or other component which is intended to be rotary driven.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Drilling And Boring (AREA)
  • Drilling Tools (AREA)
  • Dowels (AREA)

Claims (6)

1. Schraubenzieher- oder Schraubenanzieh-Anbaugerät für für ein kraftgetriebenes Werkzeug mit einem Spannfutter, das in Abstand angeordnete Spannbacken aufweist, wobei das Anbaugerät ein rohrförmiges Teil (1) umfaßt, das über einen in dem Spannfutter eingespannten Wendelbohrer steckbar. ist und an einem Emde einen Schraubenzieher (9) oder einen Schraubenanzieher (5) aufweist, dadurch gekennzeichnet, daß das rohrförmige Teil (1) an seinem anderen Ende mindestens zwei Fortsätze (2) besitzt, die sich in Richtung der Längsachse des rohrförmigen Teils erstrecken und in Umfangsrichtung im Abstand voneinander angeordnet sind zwecks Einführung in die Zwischenräume zwischen den Spannbacken des Spannfutters zur Herstellung einer direkten Antriebsverbindung des Anbaugerätes mit dem kraftgetriebenen Werkzeug.
2. Anbaugerät nach Anspruch 1, dadurch gekennzeichnet, daß die freien Enden der Fortsätze (2) gerundet oder abgeschrägt sind zwecks Vereinfachung des Ineingriffbringens in die Zwischenräume zwischen den Spannbacken.
3. Anbaugerät nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, daß es ein hohlkegelförmiges Teil (18) umfaßt, in das die Fortsätze (2) sich der Länge nach erstrecken, und daß das hohlkegelförmige Teil (8) derart ausgebildet ist, daß es sich über das Spannfutter erstreckt, sobald die Fortsätze sich innerhalb der Zwischenräume der Spannbacken befinden.
4. Anbaugerät nach Anspruch 3, dadurch gekennzeichnet, daß das hohlkegelförmige Teil (18) Feststellmittel (15) trägt, um das Anbaugerät relativ zum Spannfutter festzulegen.
5. Kombination eines Anbaugerätes nach einem oder mehreren der vorhergehenden Ansprüche und eines kraftgetriebenen Werkzeuges mit einem Spannfutter, in dessen Spannbacken ein Wendelbohrer (D) gehalten ist und bei dem der Wendelbohrer von dem rohrförmigen Teil (1) des Anbaugerätes aufgenommen ist sowie die Fortsätze (2) an dem Ende des rohrförmigen Teils (1) innerhalb von Zwischenräumen aufgenommen sind, welche sich zwischen den Spannbacken des Spannfutters befinden, zur Herstellung einer direkten Antriebsverbindung des Anbaugerätes mit dem kraftgetriebenen Werkzeug.
6. Kombination nach Anspruch 5, dadurch gekennzeichnet, daß die Fortsätze (2) derart bemessen sind, daß sie einen engen Sitz innerhalb der zugeordneten Zwischenräume zwischen den Spannbacken des Spannfutters aufweisen.
EP82306749A 1982-01-08 1982-12-17 Vorsatzgerät für Bohrmaschinen oder dergleichen Expired EP0083860B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82306749T ATE29687T1 (de) 1982-01-08 1982-12-17 Vorsatzgeraet fuer bohrmaschinen oder dergleichen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB08200492A GB2118462B (en) 1982-01-08 1982-01-08 Power tool screwdriving attachment
GB8200492 1982-01-08

Publications (3)

Publication Number Publication Date
EP0083860A2 EP0083860A2 (de) 1983-07-20
EP0083860A3 EP0083860A3 (en) 1984-08-01
EP0083860B1 true EP0083860B1 (de) 1987-09-16

Family

ID=10527539

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82306749A Expired EP0083860B1 (de) 1982-01-08 1982-12-17 Vorsatzgerät für Bohrmaschinen oder dergleichen

Country Status (8)

Country Link
EP (1) EP0083860B1 (de)
AT (1) ATE29687T1 (de)
AU (1) AU563590B2 (de)
CA (1) CA1220058A (de)
DE (1) DE3277297D1 (de)
GB (1) GB2118462B (de)
NZ (1) NZ202940A (de)
ZA (1) ZA829436B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105458333A (zh) * 2015-12-26 2016-04-06 宁波鑫晟工具有限公司 一种手持式电钻
CN105458334A (zh) * 2015-12-26 2016-04-06 宁波鑫晟工具有限公司 一种防误操作的电钻
US20220373061A1 (en) * 2019-10-18 2022-11-24 Georgia Tech Research Corporation Drive Belt with Surface Texture for Minimizing Vibrations

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129353B (en) * 1982-10-11 1986-05-21 Itw Ltd Combination hole-drilling and fastener-driving tools
GB2137912B (en) * 1983-04-08 1987-05-28 Charles Glen Dunn Combined screw-driver attachment and power drill
DE3828982A1 (de) * 1988-08-26 1990-03-01 Fischer Artur Werke Gmbh Bohrvorrichtung zur herstellung von bohrloechern mit hinterschneidung
NL9002830A (nl) * 1990-12-20 1992-07-16 Skil Nederland Nv Gereedschapshouder.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2613438A1 (de) * 1976-03-30 1977-10-13 Metabowerke Kg Werkzeughalter fuer eine maschine, insbesondere handbohrmaschine
GB2045125B (en) * 1979-03-07 1983-05-11 Illinois Tool Works Combination drilling and screwing-up tools
DE2946697A1 (de) * 1979-11-20 1981-05-27 Dr.h.c. Artur 7244 Waldachtal Fischer Vorrichtung zum einschrauben von befestigungsschrauben

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105458333A (zh) * 2015-12-26 2016-04-06 宁波鑫晟工具有限公司 一种手持式电钻
CN105458334A (zh) * 2015-12-26 2016-04-06 宁波鑫晟工具有限公司 一种防误操作的电钻
CN105458333B (zh) * 2015-12-26 2017-12-08 宁波鑫晟工具有限公司 一种手持式电钻
CN105458334B (zh) * 2015-12-26 2017-12-08 宁波鑫晟工具有限公司 一种防误操作的电钻
US20220373061A1 (en) * 2019-10-18 2022-11-24 Georgia Tech Research Corporation Drive Belt with Surface Texture for Minimizing Vibrations
US11976708B2 (en) * 2019-10-18 2024-05-07 Georgia Tech Research Corporation Drive belt with surface texture for minimizing vibrations

Also Published As

Publication number Publication date
GB2118462A (en) 1983-11-02
AU1009783A (en) 1983-07-14
AU563590B2 (en) 1987-07-16
DE3277297D1 (en) 1987-10-22
NZ202940A (en) 1985-12-13
EP0083860A3 (en) 1984-08-01
GB2118462B (en) 1986-03-26
ATE29687T1 (de) 1987-10-15
EP0083860A2 (de) 1983-07-20
CA1220058A (en) 1987-04-07
ZA829436B (en) 1983-09-28

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