DE2852024C2 - Coupling formation between a screwing tool and a fastening means that can be driven in by rotary movement - Google Patents
Coupling formation between a screwing tool and a fastening means that can be driven in by rotary movementInfo
- Publication number
- DE2852024C2 DE2852024C2 DE2852024A DE2852024A DE2852024C2 DE 2852024 C2 DE2852024 C2 DE 2852024C2 DE 2852024 A DE2852024 A DE 2852024A DE 2852024 A DE2852024 A DE 2852024A DE 2852024 C2 DE2852024 C2 DE 2852024C2
- Authority
- DE
- Germany
- Prior art keywords
- screw
- screwdriver
- head
- screw head
- slot
- 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
Links
- 230000008878 coupling Effects 0.000 title claims description 14
- 238000010168 coupling process Methods 0.000 title claims description 14
- 238000005859 coupling reaction Methods 0.000 title claims description 14
- 230000015572 biosynthetic process Effects 0.000 title claims 5
- 210000000988 bone and bone Anatomy 0.000 claims 3
- 238000006073 displacement reaction Methods 0.000 claims 2
- 238000005516 engineering process Methods 0.000 claims 2
- 230000000399 orthopedic effect Effects 0.000 claims 1
- 210000004905 finger nail Anatomy 0.000 description 1
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
- 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
- B25B23/10—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means
- B25B23/105—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means the gripping device being an integral part of the driving bit
- B25B23/106—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means the gripping device being an integral part of the driving bit the driving bit being a blade
-
- 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
- B25B15/007—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section with blade of flat or substantially flat cross-section
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
- Surgical Instruments (AREA)
Description
F i g, 4a eine Ansicht irc Richtung der Pfeile 4s-4s der F ig. 3a,F i g, 4a a view in the direction of the arrows 4s-4s of FIG Fig. 3a,
F i g, 5 eine Seitenansicht des Eindrehwerkzeuges in Eingriff mit einem Schraubenkopf,F i g, 5 a side view of the screwing tool in engagement with a screw head,
Fig,6 eine Seitenansicht in Richtung der Pfeile 6-6 der F i g. 5 und6 is a side view in the direction of arrows 6-6 the F i g. 5 and
F i g, 7 eine perspektivische Ansicht eines bevorzugten Schraubenkopfes für das Eindrehwerkzeug,Fig. 7 is a perspective view of a preferred one Screw head for the screwing tool,
Nach einem bevorzugten Ausführungsbeispiel wird als Eindrehwerkzeug ein Schraubendreher 10 verwendet, jedoch kann auch ein anderes, eine Torsion übertragendes Werkzeug oder ein maschinell angetriebenes Werkzeug verwendet werden. Zwischen antreibendem und getriebenem Kupplungsteil können auch Zwischenstücke bzw. Adapter angeordnet werden. Ein Schraubenkopf 13 hat einen Stirnschlitz 16 zur Aufnahme einer Schraubendreherkl'mge 21 des Schraubendrehers 10 bzw. ein Adapter hat eine Aufnahme, welche eine Kupplung mit dem Schraubenkopf 13 eines Befestigungsmittels, z. B. einer Schraube, vgl. F i g. 1 a, aufweist; solche Zwischenstücke sind unter Allenkopf bzw. PhiUipskopf bekannt. Im Einzelfall wird eine Schlitzkopfschraube mit dem Stirnschlitz 16, vgl. F i g. 7, verwendet. Der Stirnschlitz verläuft entlang des Durchmessers des Schraubenkopfes 13, während der Schraubendreher eine Spitze 18 von geeigneter Dicke aufweist, derart, daß sie satt in den Stirnschlitz 16 einpaßt.According to a preferred embodiment, a screwdriver 10 is used as the screwing tool, however, another tool which transmits a torsion or a machine-driven one can also be used Tool to be used. Between the driving and the driven coupling part can also Intermediate pieces or adapters are arranged. A screw head 13 has an end slot 16 to Receipt of a screwdriver clamp 21 of the screwdriver 10 or an adapter has a receptacle, which a coupling with the screw head 13 of a Fastening means, e.g. B. a screw, see FIG. 1 a, has; such intermediate pieces are under Allenkopf or PhiUipskopf known. In individual cases, a slotted head screw with the front slot 16, see FIG. 7, used. The front slot runs along the diameter of the screw head 13, during the Screwdriver has a tip 18 of suitable thickness such that it fits snugly into the end slot 16 fits.
Um nun zu vermeiden, daß die Spitze 18 seitlich und längs des Stirnschlitzes 16 abrutschen kann, ist ein zweiter Schlitz 25 als Tangentialnut, vgl. Fig. 7, senkrecht zum Stirnschlitz 16 vorhanden und so ausgebildet, daß sie einen leistenartigen Vorsprung 31, vgl. F i g. 6, 7, aufzunehmen vermag. Das Kuppeln der Spitze 13 mit dem Schraubenkopf erfolgt derart, daß der Vorsprung 31 in seiner Nut 25, vgl. gestrichelte Linien in Fig. 5, gekippt und nunmehr die Schraubendreherklinge 21 mit einer Schwenkbewegung in den Stirnschlitz 16In order to avoid that the tip 18 can slip laterally and along the front slot 16 is a second slot 25 as a tangential groove, see FIG. 7, perpendicular to the end slot 16 and so designed that they have a strip-like projection 31, see FIG. 6, 7, is able to accommodate. The coupling of the The tip 13 with the screw head is made in such a way that the projection 31 is in its groove 25, see dashed lines in FIG 5, tilted and now the screwdriver blade 21 with a pivoting movement into the end slot 16
eingeführt wird. Es wird hierdurch vermieden, daß die Schraubendreherklinge 21 in eine senkrechte Richtung abgleiten kann, weil die quer zueinander liegenden Wände des Stirnschlitzes 16 und der Nut 25, vgl. Fi g. 7, der Abgleitbewegung einen Widerstand entgegensetzen. Zwar ist im Einzelfall denkbar, daß bei einem winkelmäßigen Nichtfluchten des Schraubendreherkopfes mit der Mittelachse des Schraubenkopfes 13 eine Versetzung möglich ist; in vorteilhafter Weise ist erfindungsgemäß die zur Überwindung dieser Versetzung erforderliche exzentrische Kraft nur klein und sie kann durch die Bedienungsperson feinfühlig und leicht ausgeglichen werden, so daß die axiale Flucht der Kupplungsteile wieder hergestellt wird. Dies wird vorteilhaft durch eine Federklammer od. dgl. 61, F i g. 3, unterstützt, welche auf dem Eindrehwerkzeugschaft 52 angeklemmt od. dgl. ist. Die Federklammer ist so angeordnet, daß sie eine radial gerichtete Kraft auf die Mittelachse des Schraubendreherkopfes ausübt Es ist nicht erforderlich, daß die Feder eine große Kraft übertragen soil und es genügt eine Federspannung, um die Lockerung bzw. Entfernung der <-'eder lediglich durch Einsetzen des Fingernageis in einen Spalt 63 einzuleiten, vgl. F i g. 3.is introduced. It is thereby avoided that the screwdriver blade 21 in a vertical direction can slide because the walls of the end slot 16 and the groove 25, which are transverse to one another, see FIG. 7, oppose the sliding movement with a resistance. In individual cases it is conceivable that with one angular misalignment of the screwdriver head with the central axis of the screw head 13 a Transfer is possible; in accordance with the invention, it is advantageous to overcome this dislocation required eccentric force only small and it can be sensitively and easily by the operator be compensated so that the axial alignment of the coupling parts is restored. this will advantageously by a spring clip or the like 61, FIG. 3, which is supported on the driving tool shaft 52 clamped or the like. The spring clip is arranged so that it exerts a radially directed force on the The central axis of the screwdriver head does not require the spring to exert a large force should be transferred and a spring tension is sufficient to loosen or remove the <- 'eder only by inserting the fingernail in a gap 63 to be initiated, see F i g. 3.
Es ist erkennbar, daß der Spalt zwischen Schraubendreherkopf, einschließlich Vorsprung 31 und dem gegenüberliegenden Stirnschlitz 16 bzw. Nut 25 derart bemessen ist, daß er eine Schwenkbewegung und ein Lösen durch die Schwenkbewegung, vgl. F i g. 5, gestattet.It can be seen that the gap between the screwdriver head, including projection 31 and the opposite end slot 16 or groove 25 is dimensioned such that it has a pivoting movement and a Loosening by the pivoting movement, see Fig. F i g. 5, permitted.
Ferner ist zu beachten, daß wegen des hakenförmigen Kupplungseingriffes zwischen Schraubenkopf und dem Eindrehwerkzeug nunmehr ein leichtes Lösen der Schraube möglich wird. Das Eindrehwerkzeug arbeitet im Uhrzeigersinn als auch genau so gut im Gegenuhrzeigersinn, da die Schraubendreherklinge 21 od. dgl. in ihrem Schlitz bzw. ihrer Nut gegen Abgleiten oder Rutschen gesperrt bzw. eingerastet ist.It should also be noted that because of the hook-shaped coupling engagement between the screw head and the The screwing tool now enables the screw to be easily loosened. The driving tool works clockwise as well as counterclockwise, since the screwdriver blade 21 or the like in their slot or their groove is locked or locked against sliding or sliding.
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
Claims (3)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US89759178A | 1978-04-19 | 1978-04-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE2852024A1 DE2852024A1 (en) | 1979-10-31 |
DE2852024C2 true DE2852024C2 (en) | 1983-06-01 |
Family
ID=25408102
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2852024A Expired DE2852024C2 (en) | 1978-04-19 | 1978-12-01 | Coupling formation between a screwing tool and a fastening means that can be driven in by rotary movement |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS54140296A (en) |
DE (1) | DE2852024C2 (en) |
FR (1) | FR2423306A1 (en) |
GB (1) | GB2019283B (en) |
SE (1) | SE7812181L (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2131114A (en) * | 1982-11-25 | 1984-06-13 | Chang Chung Hsing | Screw and screwdriver |
DE3704086C2 (en) * | 1987-02-10 | 1996-06-05 | Luhr Hans Georg Prof Dr Dr | Medical instrument with an elbow for screwing |
DE3709824A1 (en) * | 1987-03-25 | 1988-10-06 | Heinl Thomas | SURGICAL HAND TOOL |
DE9202561U1 (en) * | 1992-02-27 | 1992-04-16 | Howmedica GmbH, 2314 Schönkirchen | Tool for screwing in pedicle screws |
DE19910676B4 (en) * | 1999-03-11 | 2004-10-07 | Nacam Deutschland Gmbh | Screw system for loosening and fastening screws |
CN105382751B (en) * | 2015-12-04 | 2018-08-17 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of monodactyle formula spanner |
CN112276843B (en) * | 2019-09-28 | 2022-05-03 | 东莞劲佳精密部件有限公司 | Improved screwdriver and improved screw |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1411242A (en) * | 1920-12-11 | 1922-03-28 | Guy W Faust | Screw driver |
US3095912A (en) * | 1958-08-28 | 1963-07-02 | Sullivan Melvin | Screw driver for bending wire |
US3695321A (en) * | 1970-06-30 | 1972-10-03 | Jacob W Garehime Jr | Cavity head screw and driving tool therefor |
SE362817B (en) * | 1971-03-25 | 1973-12-27 | T L Hill | |
JPS5043357A (en) * | 1973-08-22 | 1975-04-19 | ||
GB1469920A (en) * | 1976-06-24 | 1977-04-06 | Matthews S | Screwclip |
-
1978
- 1978-11-22 JP JP14357478A patent/JPS54140296A/en active Pending
- 1978-11-27 SE SE7812181A patent/SE7812181L/en unknown
- 1978-12-01 DE DE2852024A patent/DE2852024C2/en not_active Expired
-
1979
- 1979-04-02 FR FR7908234A patent/FR2423306A1/en active Granted
- 1979-04-03 GB GB7843175A patent/GB2019283B/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2423306A1 (en) | 1979-11-16 |
JPS54140296A (en) | 1979-10-31 |
FR2423306B3 (en) | 1982-05-28 |
GB2019283A (en) | 1979-10-31 |
SE7812181L (en) | 1979-10-20 |
GB2019283B (en) | 1982-07-28 |
DE2852024A1 (en) | 1979-10-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OD | Request for examination | ||
D2 | Grant after examination | ||
8364 | No opposition during term of opposition |