WO1993017834A1 - Spannfutter für werkzeug-einsätze, insbesondere für schraubendreher - Google Patents
Spannfutter für werkzeug-einsätze, insbesondere für schraubendreher Download PDFInfo
- Publication number
- WO1993017834A1 WO1993017834A1 PCT/EP1993/000513 EP9300513W WO9317834A1 WO 1993017834 A1 WO1993017834 A1 WO 1993017834A1 EP 9300513 W EP9300513 W EP 9300513W WO 9317834 A1 WO9317834 A1 WO 9317834A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- screwdriver
- receiving part
- chuck
- spring
- compression spring
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B15/00—Screwdrivers
- B25B15/001—Screwdrivers characterised by material or shape of the tool bit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/0007—Connections or joints between tool parts
- B25B23/0035—Connection means between socket or screwdriver bit and tool
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/02—Arrangements for handling screws or nuts
- B25B23/08—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation
- B25B23/12—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using magnetic means
Definitions
- the invention relates to a chuck according to the preamble of claim 1.
- DE-OS 2 934 428 shows a chuck of this type, with a bushing corresponding to the cross section of the screwdriver with a window-shaped opening in which a pressure piece acting on the shaft of the screwdriver lies in the form of a ball.
- a sleeve Arranged on this sleeve is a sleeve which can be displaced against the action of a spring and which has a wedge-shaped clamping surface, which acts on the ball in such a way that the screwdriver can be loosened or locked
- the invention is based on the consideration of avoiding these shortcomings and inconveniences.
- the object of the invention is to simplify this chuck, which is part of the prior art, and thus to reduce the production costs to a minimum, and also to increase the service life.
- the seat for a compression spring is provided at the screwdriver-side end of the receiving part, which acts on a disc-like element penetrated by the screwdriver in such a way that it relaxes the compression spring tilted relative to the longitudinal axis of the screwdriver, that the element is articulated at the screwdriver end of the receiving part and has a recess, the limiting edges of which are adapted to those of the cross-sectional area of the screwdriver, and that a seat is provided in the sliding sleeve, which is located in the release position of the screwdriver against the element.
- the proposal according to the invention reduces the components required for locking and loosening the screwdriver to a minimum. Basically, only the specially designed spring and the plate-like element cooperating with it with the action of a clamping device suffice to solve this problem.
- the screwdriver By simply moving the sliding sleeve in the direction of the hand drill, the screwdriver can be easily and conveniently inserted into or removed from the receiving part, while when the sliding sleeve is released by releasing the compression spring, the disk-like element is transferred to the clamping position
- the articulated connection has a hook-shaped projection on the screw-side end of the receiving part, which engages in a bulge in the recess and engages behind the element in the region of the bulge.
- the winding of the compression spring directly opposite the element is tilted relative to the longitudinal axis thereof in the relaxed state of the compression spring.
- FIG. 3 shows a vertical partial section on an enlarged scale of the chuck according to the invention in the locking position of the screwdriver
- REPLACEMENT LEAF Fig. 5 is a side view in an enlarged scale
- the clamping pin is designated, which is connected in a suitable manner with the drill chuck of a power-driven hand drill, not shown in the drawing, so that the rotary movement of the drive shaft of the drilling machine is transmitted to the clamping pin 1.
- the clamping pin 1 is connected in a suitable manner to a hollow cylindrical receiving part 2 for the screwdriver 3.
- the end of the sliding sleeve 4 facing the screwdriver 3 is conical in the embodiment shown.
- a seat 2a is provided for a compression spring 5, which in the embodiment shown is designed as a spiral spring.
- This compression spring 5 acts on a disc-like element 6 penetrated by the screwdriver 3 in such a way that it cant relative to the longitudinal axis of the screwdriver 3 during the relaxation of the compression spring 5 (FIGS. 1 and 3).
- the disc-shaped element 6 is articulated on the screwdriver end of the receiving part 2.
- This articulated connection can be designed in various ways. In the embodiment shown in the drawing, this is done in such a way that a hook-shaped extension 2b is arranged on the screwdriver-side end of the receiving part 2, which engages in a bulge 6a (FIG. 4) in the recess 6b of the disk-shaped element 6 and this reaches behind in the area of this recess 6b (FIGS
- the boundary edges of the recess 6b in the disc-shaped element 6 are those of the cross-sectional area of the screwdriver
- a seat 4a is provided in the sliding sleeve 4, against which the element 6 rests when the screwdriver 3 is in the released position.
- a coil spring is provided as the compression spring 5.
- the winding 5a of the compression spring 5 directly opposite the element 6 is tilted relative to the longitudinal axis thereof in the relaxed state of the compression spring 5 (FIG. 5).
- the element 6 and the compression spring 5 form two separate parts. However, this need not be the case. It is within the scope of the invention to combine these two elements. In this case it will be appropriate
- REPLACEMENT LEAF to form the spring as an oblique leaf spring, one end of which has the shape of the disk-like element 6.
- Other alternatives are also possible.
- a permanent magnet 7 is provided in the cavity of the receiving part 2 between the screwdriver 3 and the clamping pin 1, which generates an adhesive force at the tip of the screwdriver 3.
- the drive-side end of the permanent 'magnet was added by an insulating sleeve 8. 7
- a compression spring 9 for length compensation can be provided in the receiving part 2.
- the chuck works as follows:
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Holding Or Fastening Of Disk On Rotational Shaft (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940703108A KR950700814A (ko) | 1992-03-07 | 1993-03-06 | 공구 삽입체용, 특히 드라이버용 척(Chuck for Tool Inserts, Especially Screwdrivers) |
EP93905311A EP0629149A1 (de) | 1992-03-07 | 1993-03-06 | Spannfutter für werkzeug-einsätze, insbesondere für schraubendreher |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP4207337.5 | 1992-03-07 | ||
DE4207337A DE4207337C1 (de) | 1992-03-07 | 1992-03-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993017834A1 true WO1993017834A1 (de) | 1993-09-16 |
Family
ID=6453530
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1993/000513 WO1993017834A1 (de) | 1992-03-07 | 1993-03-06 | Spannfutter für werkzeug-einsätze, insbesondere für schraubendreher |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0629149A1 (de) |
KR (1) | KR950700814A (de) |
CA (1) | CA2131179A1 (de) |
DE (1) | DE4207337C1 (de) |
WO (1) | WO1993017834A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002022314A1 (en) * | 2000-09-15 | 2002-03-21 | Lee Hong Kun | A screw guider of driver |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4417210A1 (de) * | 1994-05-17 | 1995-11-23 | Optigrip Werkzeuge | Körper zum Festhalten von Werkzeug |
EP0999921B1 (de) * | 1997-07-31 | 2002-02-20 | USH Schraubwerkzeugfabrik Ulrich SchmidtGmbH & Co. KG. | Spannfutter mit bogenstück |
WO2000037220A1 (de) * | 1998-12-19 | 2000-06-29 | Felo-Werkzeugfabrik Holland-Letz Gmbh | Spannfutter für auswechselbare werkzeugeinsätze |
CA2373060C (en) * | 1999-05-03 | 2012-10-23 | Maxtech Manufacturing Inc. | Quick-connect mechanism |
US6378402B1 (en) | 2000-02-29 | 2002-04-30 | Black & Decker Inc. | Hand tool |
DE10254339B4 (de) * | 2002-06-10 | 2019-10-10 | Wera Werkzeuge Gmbh | Futter zur Aufnahme von durch Drehen um ihre Achse verwendbare Werkzeuge |
EP1513653B1 (de) | 2002-06-10 | 2012-09-19 | WERA WERK HERMANN WERNER GmbH & Co. KG | Futter zur aufnahme von durch drehen um ihre achse verwendbare werkzeuge |
DE10348057B3 (de) * | 2003-10-16 | 2004-12-16 | Metabowerke Gmbh | Handwerkzeuggerät |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2550775A (en) * | 1949-07-13 | 1951-05-01 | Wade Stevenson | Magnetic screw driver |
FR2128997A5 (de) * | 1971-03-10 | 1972-10-27 | Geffroy Robert | |
GB2050881A (en) * | 1979-06-19 | 1981-01-14 | Kango Electric Hammers Ltd | Depth stop for a drilling tool |
DE3201365A1 (de) * | 1981-10-06 | 1983-04-14 | Beckmann KG, 7410 Reutlingen | Vorrichtung zum verhindern einer axialbewegung eines gefuehrten rundprofilkoerpers, insbesondere eines zapfrohres an einem bierfass |
DE2934428C2 (de) * | 1979-08-25 | 1989-03-30 | Hermann Werner Gmbh & Co, 5600 Wuppertal, De |
-
1992
- 1992-03-07 DE DE4207337A patent/DE4207337C1/de not_active Expired - Fee Related
-
1993
- 1993-03-06 KR KR1019940703108A patent/KR950700814A/ko not_active Application Discontinuation
- 1993-03-06 CA CA002131179A patent/CA2131179A1/en not_active Abandoned
- 1993-03-06 WO PCT/EP1993/000513 patent/WO1993017834A1/de not_active Application Discontinuation
- 1993-03-06 EP EP93905311A patent/EP0629149A1/de not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2550775A (en) * | 1949-07-13 | 1951-05-01 | Wade Stevenson | Magnetic screw driver |
FR2128997A5 (de) * | 1971-03-10 | 1972-10-27 | Geffroy Robert | |
GB2050881A (en) * | 1979-06-19 | 1981-01-14 | Kango Electric Hammers Ltd | Depth stop for a drilling tool |
DE2934428C2 (de) * | 1979-08-25 | 1989-03-30 | Hermann Werner Gmbh & Co, 5600 Wuppertal, De | |
DE3201365A1 (de) * | 1981-10-06 | 1983-04-14 | Beckmann KG, 7410 Reutlingen | Vorrichtung zum verhindern einer axialbewegung eines gefuehrten rundprofilkoerpers, insbesondere eines zapfrohres an einem bierfass |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002022314A1 (en) * | 2000-09-15 | 2002-03-21 | Lee Hong Kun | A screw guider of driver |
Also Published As
Publication number | Publication date |
---|---|
KR950700814A (ko) | 1995-02-20 |
EP0629149A1 (de) | 1994-12-21 |
CA2131179A1 (en) | 1993-09-08 |
DE4207337C1 (de) | 1993-06-09 |
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