EP1454712A2 - Schraubendreherwerkzeug - Google Patents
Schraubendreherwerkzeug Download PDFInfo
- Publication number
- EP1454712A2 EP1454712A2 EP04005405A EP04005405A EP1454712A2 EP 1454712 A2 EP1454712 A2 EP 1454712A2 EP 04005405 A EP04005405 A EP 04005405A EP 04005405 A EP04005405 A EP 04005405A EP 1454712 A2 EP1454712 A2 EP 1454712A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- wing
- screwdriver tool
- tool according
- tip
- cross
- 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- Withdrawn
Links
Images
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
- B25B15/00—Screwdrivers
- B25B15/001—Screwdrivers characterised by material or shape of the tool bit
- B25B15/004—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section
- B25B15/005—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section with cross- or star-shaped cross-section
Definitions
- the present invention relates to a screwdriver tool according to the preamble of the main claim.
- Such a screwdriver tool is known. It takes place Use with so-called Phillips screws. Such Phillips screws are used as Pozidriv and on the other hand referred to as Philips screws. Appropriate There are also designations for the screwdriver tools.
- Bit inserts mean, find screwdriver tools of this kind today mainly used as bit inserts in the field the electrically driven screwing tools (cordless screwdriver, Drills). In this respect, the problem often arises one for the different screw types have the right bit insert available.
- a tool bit is known from DE 202 11 316 U1, the cutting edges to be used in the direction of removal of the screws has that, when unscrewing screws with broken Phillips slots due to the use of inappropriate Tool bits are created in the material of the screw heads cut in to remove these screws.
- the known Screwdriver tool so that it equally for both Pozidriv and Philips screws can be used and is always sufficient in both cases can introduce high torques into the screws without that damage to the driver wings or the counter contours in the cross-shaped screw slot are to be feared.
- the invention solves this problem with the features of Main claim.
- the basis for the invention is - when considering the Tip of the screwdriver tool - an asymmetrical one Contour on at least one of the four drive wings that stand on each other in a cross shape. It is made up of cross center lines assumed that are perpendicular to each other and in the Hit the center of the axis of rotation of the screwdriver tool. The width starts from these cross center lines of the wing side of the driving wing with increasing Distance from the wing base more than on the other side of the wing of the same drive wing facing the screwing direction of the screws to be used is opposite. The Width increase therefore takes place on the - based on the respective Direction of screwing - rear of wing.
- the invention can be used in machined, formed or sintered tools.
- the width of the wing can increase with increasing distance progressive, degressive or linear from the longitudinal center line his.
- the axis of rotation around which the cutting plate is located rotates, parallel to the longitudinal axis of the screwdriver tool to move to the top.
- the width of the driving wing i.e. the distance between the two wing sides of a driving wing in each secantial plane of the frustoconical area of the Tip constantly increases with increasing approach to the tip hold.
- the frustoconical area of the screwdriver tool can be used insert very deeply into the cross recess, without the risk of having different shapes Pozidriv or Philips cross slots on the floor push open.
- the large insertion depth that can be achieved in this way favors one lying far towards the screw head end Contact area between the driver wings and the counter contours of the cross slot and thus high introductory torques into the Phillips screw.
- Another feature of the invention can be consistently concave zone between two adjacent driver wings his. The reason between the drive wings then does not have the usual intermediate ribs of the Pozidriv bit so that the insertion depth of the screwdriver tip in the cross recess remains unobstructed even when the Screwdriver tip inserted into a Philips screw becomes.
- the foot area becomes polygonal concave and exists from a two-lane polygon, of which the first train inclined to the cross center line on the order of 22.5 ° and the second move is on the order of about 45 °.
- the figures show a screwdriver tool 1.
- This Screwdriver tool is intended for screw heads with cross-shaped screw slot and has four cross-shaped protruding driving wing 6.
- the takeaway wings 6 extend from the tip 2 longitudinally to the axial direction 7 of the screwdriver tool 1.
- the screwdriver tool is pointed by a truncated cone Circumscribed envelope.
- the frustoconical Area is indexed with 3.
- the tip of the screwdriver tool goes in the drive shaft 4 over.
- the drive shaft 4 at its from the top 2 opposite end on a hexagonal shaft 5.
- Such Screwdriver tools serve as bit inserts here. It should however be expressly said that this is not a limitation of the invention is intended to mean bit inserts, but that each Kind of screwdriver tool for Phillips screws from the invention is to be detected.
- each driving wing 6 - a narrower one Wing half 10 and a wider wing half 11, the starting extends from the wing root to the wing edge 13.
- the differently contoured wing halves 10, 11 have consequently asymmetrical flanks, that of the wing sides in turn be formed.
- Wing half with increasing distance from the wing base 12 increase in width more as long as the surface pressure between this wing front and the screw head remains low while increasing the insertion depth the one based on the widening of the wing back Freedom of play becomes less.
- the exemplary embodiments shown here have the advantage that in the screwing direction more common Screws with right-hand thread on the contact flanks of the cross recess always a flank of the driving wing in the screw head which is practically parallel to the cross center line 8a, 8b runs and in this way over the insertion depth large-area contact on the counter surfaces of the screw slot has.
- the widening wing half closes 11 to their respective cross median plane 8a, 8b Angle approximately 3 to 4 ° clockwise.
- the angle be of the order of magnitude of up to a maximum of 10 °. Smaller angular dimensions of 6 ° are quite beneficial to the invention attempts have even been successfully carried out in which the tip area was practically no longer pronounced by one high depth of penetration of the screwdriver tool in the cross recess to achieve different slot geometries.
- transition area between the tip 2 and the truncated cone 3 have a broken zone in order the screwdriver tool even deeper into the cross recess to be able to insert the screw.
- the figures show that the foot area 12 between two adjacent drive wings 6 right and to the left of the bisector 16 between the cross center lines 8a, 8b is concave.
- the foot area 12 between two adjacent driver wings 6 right and left of the bisector 16 between the cross center lines 8a, 8b are polygonally concave.
- the contour of the Foot area can be described by a two-line polygon, the first polyline 17 to the cross center line 8a in the Magnitude of about 22.5 ° and the second polygon 18 in is on the order of about 45 °.
- the figures also show that the frustoconical Area 3 the distance 21 between the outer surfaces of the two wing halves 10, 11 of each driving wing 6 in each secantial plane 22 viewed towards the tip 2 is constant remains; at least in the zone of engagement with the screw slot.
- each driving wing is therefore in every secantial plane practical at least in the front area of the tip 2 constant while at the same time increasing distance from the wing base 12 towards the wing edge 13 asymmetrical increased.
- FIGS. 1, 3 and 5 in particular show that the wing side whose surface normal 23 - in axial Looking towards 7 at the top 2 - clockwise 24 points, the widening half 11.
- the exemplary embodiments shown are distinguished advantageous in machining, in which usual blanks in Pozidriv or Philips form machined with a cutting plate for common Philips contours be that according to the details of the main claim modified in the area between wing root and wing edge has been.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
Description
- Fig.1
- ein erstes Ausführungsbeispiel der Erfindung in Ansicht von vorn;
- Fig.2
- ein Ausführungsbeispiel der Erfindung in Längsansicht;
- Fig.3
- eine Detailansicht des Ausführungsbeispiels gemäß Fig.1;
- Fig.4
- das Ausführungsbeispiel gemäß Fig.2 um 45° gedreht;
- Fig.5
- das Ausführungsbeispiel gemäß Fig.1 um 45° gedreht;
- Fig.6
- ein Ausführungsbeispiel der Erfindung in Form eines Biteinsatzes; und
- Fig.6a
- Ausführung gemäß Fig.6 in Ansicht von vorn.
- 1
- Schraubendreherwerkzeug
- 2
- Spitze
- 3
- Kegelstumpf
- 4
- Antriebsschaft
- 5
- Sechskantschaft
- 6
- Mitnehmerflügel
- 7
- Axialrichtung
- 8a
- Kreuzmittellinie
- 8b
- Kreuzmittellinie
- 9
- Flügelbreite
- 10
- schmalere Flügelhälfte
- 11
- breitere Flügelhälfte
- 12
- Flügelfuß
- 13
- Flügelrand
- 14
- Spitzenwinkel
- 15
- gebrochene Zone
- 16
- Winkelhalbierende
- 17,17',17 "
- erster Polygonzug
- 18,18',18''
- zweiter Polygonzug
- 19
- erster Winkel zur Kreuzmittellinie
- 20
- zweiter Winkel zur Kreuzmittellinie
- 21
- Abstand zwischen den Außenflächen jedes Mitnehmerflügels
- 22
- Sekantialebene
- 23
- Flächennormale
- 24
- Uhrzeigerrichtung
Claims (11)
- Schraubendreherwerkzeug (1), welches für Schraubenköpfe mit kreuzförmigem Schraubenschlitz vorgesehene kreuzförmig abstehende Mitnehmerflügel (6) aufweist, die vom Bereich der Spitze (2) ausgehend zunächst von einer kegelstumpfförmigen (3) Einhüllenden umschrieben werden um anschließend in den Antriebsschaft (4) überzugehen, wobei in axialer Richtung (7) auf die Spitze (2) betrachtet an zumindest einem der Mitnehmerflügel (6) - von den Kreuzmittellinien (8a,8b) aus gemessen - die Breitenzunahme des Mitnehmerflügels mit zunehmendem Abstand vom Flügelfuß (12) auf derjenigen Flügelseite (11) größer ist als auf der anderen Flügelseite (10), welche bei dieser Betrachtungsrichtung zur Einschraubrichtung der zu verwendenden Schrauben entgegengesetzt weist.
- Schraubendreherwerkzeug nach Anspruch 1, dadurch gekennzeichnet, daß die andere Flügelseite (10) parallel zur Kreuzmittellinie (8a,8b) verläuft.
- Schraubendreherwerkzeug nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die sich verbreiternde Flügelseite (11) zu ihrer Kreuzmittelebene (8a) einen Winkel von etwa 3 bis 4° im Uhrzeigersinn (24) bildet.
- Schraubendreherwerkzeug nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Spitze (2) einen Winkel (14) von weniger als 19° aufweist.
- Schraubendreherwerkzeug nach Anspruch 4, dadurch gekennzeichnet, daß der Winkel (14) in der Größenordnung von etwa 5 bis 10° vorzugsweise in der Größenordnung von etwa 6° liegt.
- Schraubendreherwerkzeug nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß der Winkel (14) zwischen der Spitze (2) und dem Beginn des Kegelstumpfs (3) gebrochen ist.
- Schraubendreherwerkzeug nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Fußbereich (12) zwischen zwei benachbarten Mitnehmerflügeln (6) rechts und links der Winkelhalbierenden (16) zwischen den Kreuzmittellinien (8a,8b) polygonal konkav ist.
- Schraubendreherwerkzeug nach Anspruch 7, dadurch gekennzeichnet, daß der Fußbereich (12) von einem zweizügigen Polygon beschreibbar ist, wobei der erste Zug (17) zur Kreuzmittellinie (8a) in der Größenordnung von etwa 22,5° und der zweite Zug (18) in der Größenordnung von etwa 45° geneigt ist.
- Schraubendreherwerkzeug nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß im kegelstumpfförmigen Bereich (3) der Abstand zwischen den Außenflächen der zwei Flügelhälften (10,11) eines Mitnehmerflügels (6) in jeder Sekantialebene (22) zur Spitze (2) hin konstant bleibt.
- Schraubendreherwerkzeug nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß der Antriebsschaft (4) einen sechseckigen Querschnitt (5) aufweist und daß das Schraubendreherwerkzeug als Biteinsatz ausgebildet ist.
- Schraubendreherwerkzeug nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß diejenige Flügelseite, deren Flächennormale (23) - in axialer Richtung (7) auf die Spitze (2) betrachtet - in Uhrzeigerrichtung (24) weist, die sich verbreiternde Flügelseite (11) ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10310410 | 2003-03-07 | ||
DE2003110410 DE10310410A1 (de) | 2003-03-07 | 2003-03-07 | Schraubendreherwerkzeug |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1454712A2 true EP1454712A2 (de) | 2004-09-08 |
EP1454712A3 EP1454712A3 (de) | 2009-06-24 |
Family
ID=32797902
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04005405A Withdrawn EP1454712A3 (de) | 2003-03-07 | 2004-03-08 | Schraubendreherwerkzeug |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1454712A3 (de) |
DE (1) | DE10310410A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI474895B (de) * | 2013-09-06 | 2015-03-01 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE959360C (de) * | 1943-01-19 | 1957-03-07 | Guest Keen & Nettlefolds Midla | Schraubenzieher |
DE1257698B (de) * | 1961-03-17 | 1967-12-28 | Aer O Torq Inc | Schraubendreher fuer Kreuzschlitzschrauben od. dgl. |
DE29703215U1 (de) * | 1997-02-24 | 1998-06-18 | Wera Werk Hermann Werner GmbH & Co., 42349 Wuppertal | Schraubendreher oder -Einsatz |
EP1080846A1 (de) * | 1998-02-24 | 2001-03-07 | Katsuyuki Totsu | Schraubenziehereinsatz und dessen kombination mit einer schraube |
DE20211316U1 (de) * | 2002-07-26 | 2002-10-10 | C. Malong Co., Ltd., Da Li, Taichung | Kreuzschlitz-Werkzeugbit |
-
2003
- 2003-03-07 DE DE2003110410 patent/DE10310410A1/de not_active Withdrawn
-
2004
- 2004-03-08 EP EP04005405A patent/EP1454712A3/de not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE959360C (de) * | 1943-01-19 | 1957-03-07 | Guest Keen & Nettlefolds Midla | Schraubenzieher |
DE1257698B (de) * | 1961-03-17 | 1967-12-28 | Aer O Torq Inc | Schraubendreher fuer Kreuzschlitzschrauben od. dgl. |
DE29703215U1 (de) * | 1997-02-24 | 1998-06-18 | Wera Werk Hermann Werner GmbH & Co., 42349 Wuppertal | Schraubendreher oder -Einsatz |
EP1080846A1 (de) * | 1998-02-24 | 2001-03-07 | Katsuyuki Totsu | Schraubenziehereinsatz und dessen kombination mit einer schraube |
DE20211316U1 (de) * | 2002-07-26 | 2002-10-10 | C. Malong Co., Ltd., Da Li, Taichung | Kreuzschlitz-Werkzeugbit |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI474895B (de) * | 2013-09-06 | 2015-03-01 |
Also Published As
Publication number | Publication date |
---|---|
DE10310410A1 (de) | 2004-09-23 |
EP1454712A3 (de) | 2009-06-24 |
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18D | Application deemed to be withdrawn |
Effective date: 20131001 |