EP2727685B1 - Holding device for a screw head with nut - Google Patents

Holding device for a screw head with nut Download PDF

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Publication number
EP2727685B1
EP2727685B1 EP13187107.1A EP13187107A EP2727685B1 EP 2727685 B1 EP2727685 B1 EP 2727685B1 EP 13187107 A EP13187107 A EP 13187107A EP 2727685 B1 EP2727685 B1 EP 2727685B1
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EP
European Patent Office
Prior art keywords
socket
cage
screw head
holding device
accordance
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.)
Active
Application number
EP13187107.1A
Other languages
German (de)
French (fr)
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EP2727685A2 (en
EP2727685A3 (en
Inventor
Andreas Wunderlich
Rainer Eckert
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.)
Wuerth International AG
Adolf Wuerth GmbH and Co KG
Original Assignee
Wuerth International AG
Adolf Wuerth GmbH and Co KG
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Publication date
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Publication of EP2727685A2 publication Critical patent/EP2727685A2/en
Publication of EP2727685A3 publication Critical patent/EP2727685A3/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B13/00Spanners; Wrenches
    • B25B13/02Spanners; Wrenches with rigid jaws
    • B25B13/06Spanners; Wrenches with rigid jaws of socket type
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/02Arrangements for handling screws or nuts
    • B25B23/08Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation
    • B25B23/10Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/02Arrangements for handling screws or nuts
    • B25B23/08Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation
    • B25B23/12Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using magnetic means

Definitions

  • a screw-in aid is already known, which has a clamp with a receiving space for a socket engaging with a screw head. Both the socket and the screw are inserted axially into the receiving space.
  • the drive associated with the end face has a square opening, so that when screwing the bracket is rotated with ( US 4744273 ).
  • the screw in another screwing the screw can be used laterally in a cage. However, the screwdriver must then be adjusted for engagement with the screw head ( GB 28448 ).
  • the invention is based on the object to provide a way to reliably prevent slipping of the socket from the screw head.
  • the invention proposes a holding device with the features mentioned in claim 1. Further developments of the invention are the subject of dependent claims.
  • the holding device thus contains a cage, in which a receiving space is formed, in which the screw head of a screw and standing in engagement with this screw head socket are housed.
  • the protrusions formed on the two end sides of the cage prevent the socket from being disengaged from the screw head.
  • the receptacle is designed so that the socket with respect to its axis of rotation can not be moved laterally. This can be done, for example, that the socket rests at several points on a design of the cage. Since the screw head is in engagement with the socket, it is sufficient if the socket is secured against lateral deflection.
  • the cage it has proven to be particularly useful to design the cage so that the socket together with the screw head can be inserted laterally into the receiving space.
  • the cage can be placed laterally on the combination of screw and socket. This allows the user to first engage the socket with the screw head, and only then postpone the cage.
  • the lateral opening which allows the insertion of socket of the screw, can be designed so that it just pushes through, if necessary, while overcoming a certain inhibition.
  • the user can also the cage, for example hold at the beginning of the screwing process. Even if, at the end of the screwing process, the cage is pulled against the surface, it does not need to rotate, which leads to a protection of the surface.
  • the lateral opening of the cage is designed so that the insertion is then possible when the output of the rotary tool is already engaged with the socket. Then the user can stay in his normal working rhythm.
  • the screw is connected to the socket and the turning tool to the socket. Only then the cage is then pushed laterally.
  • At least one projection is provided both to rest on the drive side of the socket and to rest on the underside of the screw head, which ensures the cohesion of the two intermeshing parts. It makes sense to have a plurality of projections distributed over the circumference which, in a further development of the invention, can each be designed as a continuous partial annular projection. This applies both to the attack on the underside of the screw head and the attack on the drive side of the socket.
  • the drive side is the side of the socket to which the driven screwdriver is connected to the socket.
  • the projections on the two end sides can protrude into the interior of the cage in different radial directions.
  • the projection on the end face assigned to the socket must leave the drive configuration of the socket free, while the projection on the end face of the receiving space associated with the screw head must permit the passage of the screw shaft.
  • the cage is used to fix the socket in the transverse direction and also to hold together the socket and screw head in the axial direction. It may, for example, consist of individual rods arranged along a half circular arc, whereby the cage has approximately the shape of a half-cylinder.
  • the cage is designed as a partial hollow cylinder whose inner diameter corresponds to the outer diameter of the socket.
  • the hollow cylinder extends over half an arc length.
  • the cage designed as a hollow cylinder may also extend tangentially to the circumference beyond an axial plane, in which region the side walls then run parallel.
  • For holding the socket in the receiving space may be provided in the simplest case, put a clip around the cage. This clip can be removed either when inserting the socket and screw head in the receiving space and then put back on.
  • a securing device can be provided, which holds the socket in the cage. If the socket is held, it also holds the screw head at the same time.
  • the securing device can have a spring clip, in particular in the form of a ring section or a half ring.
  • the ring portion may be slidably guided in the cage and in the open state, allow the screw head and nut to be inserted and, when closed, hold both in the cage.
  • locking means may be provided to lock the half-ring in the two positions.
  • this securing device may be that the edges of the lateral opening of the cage form this securing device. These may for example have a mutual distance from each other, which is slightly smaller than the diameter of the socket. This means that the socket must be snapped into the receiving space.
  • At least one edge of this opening is formed deformable, for example by an elastic lip.
  • the entire cage is resilient to a small extent, for example, when it is designed as a hollow cylinder.
  • Yet another possibility for forming the securing device can be realized in arranging a magnet in the wall of the receiving space.
  • a further possibility for securing may be that a displaceable or tiltable latch is provided on the cage, which is pushed or tilted over the opening.
  • FIG. 1 a socket 1 is shown, which has a circular cylindrical cross-section in its upper region.
  • the socket 1 has an in FIG. 1 top flat surface 2 shown above with a square recess 3 on.
  • the square recess serves to transmit a torque by an electric screwdriver.
  • the socket 1 is in engagement with the screw head of an indicated screw 4.
  • the socket 1 is arranged in a cage 5, which forms a receiving space 6 for the socket 1 and the screw head of the screw 4.
  • the cage 5 is formed by a partial cylinder 7, which corresponds to the in FIG. 1 visible front is open.
  • the cage 5 designed as a hollow cylinder 7 contains in each case an inwardly directed partial annular projection 8 or 9, which extends in each case over approximately half the arc length.
  • the outer diameter of the in FIG. 1 upper circular cylindrical portion of the socket 1 corresponds to the inner diameter of the hollow cylinder 7. This ensures that the socket 1 is in the cage 5 can move in the direction of the open side, but not in other directions.
  • the inner diameter of the hollow cylinder 7 may be slightly larger than the outer diameter of the circular cylindrical portion of the socket. 1
  • the second partial annular projection 9 is formed, which also projects into the interior 6 of the cage 5 and there forms a contact surface for the underside of the screw head 13 of the screw 4.
  • FIG. 4 it can also be seen that the projections 8 and 9 protrude differently far the interior space 6.
  • the projection 9 must leave room for the screw shaft 4, while the projection 8 must allow access to the recess 3 of the end face 2 of the socket 1.
  • FIG. 2 shows the holding device from the opposite direction opposite the representation of the FIG. 4 ,
  • a permanent magnet 15 is mounted in the wall of the cage 5.
  • the permanent magnet 15 holds the socket 1, which is usually made of ferromagnetic material, ie steel, fixed. This ensures that in the normal working conditions, the socket 1 with respect to the cage 5 can not move laterally.
  • the axis of the socket and thus the screw is marked by a 16 in FIG. 2 displayed.
  • the axis is indicated by the mark 16. It can therefore be seen that the cage extends not only up to the mark center 16 corresponding axial center plane, but beyond this level. However, beyond this plane, the cross-sectional shape is no longer that of a circular cylinder, but the side walls are parallel to each other in this area. Otherwise, the insertion of the socket 1 would no longer be possible.
  • the use of the holding device proposed by the invention is as follows. First, the socket 1 is attached to the screw head 13. Subsequently, the cage 5 is pushed from the side of the combination of socket 1 and screw head 13, for example, from the right in FIG. 3 , Pushing is done until the outer surface of the socket 1 rests against the inside of the cage. In this position, the socket 1 is held by the permanent magnet 15. Thus, the holding device is ready for use.
  • the drive of the screwdriver is connected to the recess 3 in the end face 2 of the socket 1 and the screwing can begin. The screwing process can continue until the lower end face 12 of the cage 5 is located just before the surface of the material into which the screw 4 is screwed. Then the holding device can be removed and the rest then without the Retaining device to be screwed on. In this end, the risk of slipping no longer exists.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Description

Es ist üblich, Schrauben mithilfe eines Schraubers und einer Stecknuss einzuschrauben. Die Stecknuss wird in Eingriff mit dem Schraubenkopf der Schraube gebracht und dann mithilfe eines angetriebenen Schraubers eingeschraubt. Der Vorschub der Schraube wird durch das Gewinde der Schraube bestimmt. Beim Einschrauben oder Herausschrauben kann durch den Vortrieb des Gewindes die Stecknuss von dem Schraubenkopf abrutschen. Dies kann bei sehr langen Schrauben, beispielsweise mit einer Länge von mehr als 20 cm, auch dadurch geschehen, dass die Schraube selbst sich elastisch verwindet.It is common to screw in screws using a screwdriver and a socket. The socket is brought into engagement with the screw head of the screw and then screwed in using a powered screwdriver. The feed of the screw is determined by the thread of the screw. When screwing in or unscrewing, the socket can slip off the screw head due to the drive of the thread. For very long screws, for example with a length of more than 20 cm, this can also be done by the screw itself twisting elastically.

Es ist bereits eine Einschraubhilfe bekannt, die eine Klammer mit einem Aufnahmeraum für eine mit einem Schraubenkopf in Eingriff stehende Stecknuss aufweist. Sowohl die Stecknuss als auch die Schraube werden axial in den Aufnahmeraum eingeschoben. Die dem Antrieb zugeordnete Stirnseite weist eine Vierkantöffnung auf, so dass bei dem Einschrauben die Klammer mit verdreht wird ( US 4744273 ).A screw-in aid is already known, which has a clamp with a receiving space for a socket engaging with a screw head. Both the socket and the screw are inserted axially into the receiving space. The drive associated with the end face has a square opening, so that when screwing the bracket is rotated with ( US 4744273 ).

Weiterhin bekannt ist eine Einschraubhilfe, die an einem Schraubendreher selbst befestigt ist und an der Unterseite eines Schraubenkopfs angreift, der mit dem der Schraubendreher in Eingriff steht ( US 3178971 ).Also known is a screw-in aid, which is fastened to a screwdriver itself and acts on the underside of a screw head, which engages with the screwdriver ( US 3,178,971 ).

Bei einer weiteren Einschraubhilfe kann die Schraube seitlich in einem Käfig eingesetzt werden. Allerdings muss der Schraubendreher zum Eingriff mit dem Schraubenkopf dann verstellt werden ( GB 28448 ).In another screwing the screw can be used laterally in a cage. However, the screwdriver must then be adjusted for engagement with the screw head ( GB 28448 ).

Der Erfindung liegt die Aufgabe zu Grunde, eine Möglichkeit zu schaffen, das Abrutschen der Stecknuss von dem Schraubenkopf zuverlässig zu verhindern.The invention is based on the object to provide a way to reliably prevent slipping of the socket from the screw head.

Zur Lösung dieser Aufgabe schlägt die Erfindung eine Haltevorrichtung mit den im Anspruch 1 genannten Merkmalen vor. Weiterbildungen der Erfindung sind Gegenstand von Unteransprüchen.To solve this problem, the invention proposes a holding device with the features mentioned in claim 1. Further developments of the invention are the subject of dependent claims.

Die Haltevorrichtung enthält also einen Käfig, in dem ein Aufnahmeraum gebildet ist, in dem der Schraubenkopf einer Schraube und die in Eingriff mit diesem Schraubenkopf stehende Stecknuss untergebracht sind. Durch die an den beiden Stirnseiten des Käfigs gebildeten Vorsprünge wird verhindert, dass die Stecknuss außer Eingriff mit dem Schraubenkopf gelangt. Die Aufnahme ist so ausgebildet, dass die Stecknuss bezüglich ihrer Drehachse seitlich nicht verschoben werden kann. Dies kann beispielsweise dadurch geschehen, dass die Stecknuss an mehreren Stellen an einer Ausbildung des Käfigs anliegt. Da der Schraubenkopf in Eingriff mit der Stecknuss steht, reicht es aus, wenn die Stecknuss gegen seitliches Ausweichen gesichert ist.The holding device thus contains a cage, in which a receiving space is formed, in which the screw head of a screw and standing in engagement with this screw head socket are housed. The protrusions formed on the two end sides of the cage prevent the socket from being disengaged from the screw head. The receptacle is designed so that the socket with respect to its axis of rotation can not be moved laterally. This can be done, for example, that the socket rests at several points on a design of the cage. Since the screw head is in engagement with the socket, it is sufficient if the socket is secured against lateral deflection.

Es hat sich als besonders sinnvoll herausgestellt, den Käfig so auszugestalten, dass die Stecknuss zusammen mit dem Schraubenkopf seitlich in den Aufnahmeraum eingesetzt werden kann. Anders ausgedrückt kann der Käfig auf die Kombination aus Schraube und Stecknuss seitlich aufgesetzt werden. Dies ermöglicht es dem Benutzer, zunächst die Stecknuss mit dem Schraubenkopf in Eingriff zu bringen, und erst anschließend den Käfig aufzuschieben.It has proven to be particularly useful to design the cage so that the socket together with the screw head can be inserted laterally into the receiving space. In other words, the cage can be placed laterally on the combination of screw and socket. This allows the user to first engage the socket with the screw head, and only then postpone the cage.

Die seitliche Öffnung, die das Einschieben von Stecknuss der Schraube ermöglicht, kann dabei so gestaltet werden, dass sie das Durchschieben gerade noch ermöglicht, gegebenenfalls auch unter Überwindung einer gewissen Hemmung.The lateral opening, which allows the insertion of socket of the screw, can be designed so that it just pushes through, if necessary, while overcoming a certain inhibition.

Da es keine Drehverbindung zwischen dem Antriebswerkzeug und dem Käfig gibt, sondern nur eine Drehverbindung zwischen dem Antriebswerkzeug und der Stecknuss, kann der Benutzer den Käfig auch beispielsweise bei Beginn des Schraubvorgangs festhalten. Auch dann, wenn gegen Ende des Schraubvorgangs der Käfig gegen die Oberfläche gezogen wird, braucht er nicht mit zu rotieren, was zu einer Schonung der Oberfläche führt.Since there is no rotational connection between the drive tool and the cage, but only a rotary connection between the drive tool and the socket, the user can also the cage, for example hold at the beginning of the screwing process. Even if, at the end of the screwing process, the cage is pulled against the surface, it does not need to rotate, which leads to a protection of the surface.

In Weiterbildung der Erfindung kann vorgesehen sein, dass die seitliche Öffnung des Käfigs so gestaltet ist, dass auch das Einschieben dann möglich ist, wenn der Abtrieb des Drehwerkzeugs mit der Stecknuss schon in Eingriff steht. Dann kann der Benutzer in seinem normalen gewohnten Arbeitsrhythmus bleiben. Die Schraube wird mit der Stecknuss verbunden und das Drehwerkzeug mit der Stecknuss. Erst anschließend wird dann der Käfig seitlich aufgeschoben.In a further development of the invention can be provided that the lateral opening of the cage is designed so that the insertion is then possible when the output of the rotary tool is already engaged with the socket. Then the user can stay in his normal working rhythm. The screw is connected to the socket and the turning tool to the socket. Only then the cage is then pushed laterally.

Es wurde erwähnt, dass sowohl zur Anlage an der Antriebsseite der Stecknuss als auch zur Anlage an der Unterseite des Schraubenkopfs mindestens ein Vorsprung vorgesehen ist, der den Zusammenhalt der beiden ineinander eingreifenden Teile gewährleistet. Sinnvollerweise sind mehrere über den Umfang verteilte Vorsprünge vorhanden, die in Weiterbildung der Erfindung jeweils als ein durchgehender Teilringvorsprung ausgebildet sein können. Dies gilt sowohl für den Angriff an der Unterseite des Schraubenkopfs als auch den Angriff an der Antriebsseite der Stecknuss. Unter Antriebsseite ist diejenige Seite der Stecknuss zu verstehen, an der der angetriebene Schrauber mit der Stecknuss verbunden wird.It has been mentioned that at least one projection is provided both to rest on the drive side of the socket and to rest on the underside of the screw head, which ensures the cohesion of the two intermeshing parts. It makes sense to have a plurality of projections distributed over the circumference which, in a further development of the invention, can each be designed as a continuous partial annular projection. This applies both to the attack on the underside of the screw head and the attack on the drive side of the socket. The drive side is the side of the socket to which the driven screwdriver is connected to the socket.

Dabei können die Vorsprünge an den beiden Stirnseiten unterschiedlich weit in den Innenraum des Käfigs radial hinein ragen. Der Vorsprung an der der Stecknuss zugeordneten Stirnseite muss die Antriebsausbildung der Stecknuss freilassen, während der Vorsprung an der dem Schraubenkopf zugeordneten Stirnseite des Aufnahmeraums das Durchtreten des Schraubenschafts zulassen muss.In this case, the projections on the two end sides can protrude into the interior of the cage in different radial directions. The projection on the end face assigned to the socket must leave the drive configuration of the socket free, while the projection on the end face of the receiving space associated with the screw head must permit the passage of the screw shaft.

Der Käfig dient zur Festlegung der Stecknuss in Querrichtung und auch zum Zusammenhalten von Stecknuss und Schraubenkopf in Axialrichtung. Er kann beispielsweise aus einzelnen Stäben bestehen, die längs eines halben Kreisbogens angeordnet sind, wodurch der Käfig annähernd die Form eines Halbzylinders aufweist.The cage is used to fix the socket in the transverse direction and also to hold together the socket and screw head in the axial direction. It may, for example, consist of individual rods arranged along a half circular arc, whereby the cage has approximately the shape of a half-cylinder.

Es hat sich als besonders sinnvoll gerade auch im Hinblick auf die Herstellung der Haltevorrichtung herausgestellt, dass der Käfig als Teilhohlzylinder ausgebildet ist, dessen Innendurchmesser dem Außendurchmesser der Stecknuss entspricht. Beispielsweise erstreckt sich der Hohlzylinder über eine halbe Bogenlänge. Um eine besonders zuverlässige Halterung der Stecknuss zu gewährleisten, kann sich der als Hohlzylinder ausgebildete Käfig auch tangential zum Umfang über eine Axialebene hinaus erstrecken, wobei in diesem Bereich die Seitenwände dann parallel verlaufen.It has proven to be particularly useful, especially with regard to the production of the holding device, that the cage is designed as a partial hollow cylinder whose inner diameter corresponds to the outer diameter of the socket. For example, the hollow cylinder extends over half an arc length. In order to ensure a particularly reliable mounting of the socket, the cage designed as a hollow cylinder may also extend tangentially to the circumference beyond an axial plane, in which region the side walls then run parallel.

Zum Festhalten der Stecknuss in dem Aufnahmeraum kann im einfachsten Fall vorgesehen sein, eine Klammer um den Käfig herumzulegen. Diese Klammer kann entweder beim Einsetzen von Stecknuss und Schraubenkopf in den Aufnahmeraum abgenommen und anschließend wieder aufgesetzt werden. Es ist jedoch auch möglich, eine Klammer so auszugestalten, dass die Stecknuss gegen Überwindung eines Widerstands der Klammer in den Aufnahmeraum eingedrückt wird.For holding the socket in the receiving space may be provided in the simplest case, put a clip around the cage. This clip can be removed either when inserting the socket and screw head in the receiving space and then put back on. However, it is also possible to design a clamp so that the socket is pressed against overcoming a resistance of the clip in the receiving space.

Anders ausgedrückt kann in weiterer Ausgestaltung der Erfindung eine Sicherungseinrichtung vorgesehen sein, die die Stecknuss in dem Käfig festhält. Wenn die Stecknuss festgehalten wird, wird damit gleichzeitig auch der Schraubenkopf festgehalten.In other words, in a further embodiment of the invention, a securing device can be provided, which holds the socket in the cage. If the socket is held, it also holds the screw head at the same time.

Beispielsweise kann die Sicherungseinrichtung eine Federklammer aufweisen, insbesondere in Form eines Ringabschnitts bzw. eines halben Rings. Der Ringabschnitt kann verschieblich in dem Käfig geführt sein und in geöffnetem Zustand das Einlegen von Schraubenkopf und Nuss erlauben und im geschlossenen Zustand beide in dem Käfig halten. Optional können Rastmittel vorgesehen sein, um den Halbring in den beiden Stellungen zu verrasten.For example, the securing device can have a spring clip, in particular in the form of a ring section or a half ring. The ring portion may be slidably guided in the cage and in the open state, allow the screw head and nut to be inserted and, when closed, hold both in the cage. Optionally locking means may be provided to lock the half-ring in the two positions.

Eine weitere Möglichkeit für diese Sicherungseinrichtung kann darin bestehen, dass die Ränder der seitlichen Öffnung des Käfigs diese Sicherungseinrichtung bilden. Diese können beispielsweise einen gegenseitigen Abstand voneinander aufweisen, der geringfügig kleiner ist als der Durchmesser der Stecknuss. Dies bedeutet, dass die Stecknuss in den Aufnahmeraum eingeschnappt werden muss.Another possibility for this securing device may be that the edges of the lateral opening of the cage form this securing device. These may for example have a mutual distance from each other, which is slightly smaller than the diameter of the socket. This means that the socket must be snapped into the receiving space.

Andererseits ist es auch möglich und wird von der Erfindung in weiterer Ausgestaltung vorgeschlagen, dass mindestens ein Rand dieser Öffnung verformbar ausgebildet ist, beispielsweise durch eine elastische Lippe.On the other hand, it is also possible and is proposed by the invention in a further embodiment that at least one edge of this opening is formed deformable, for example by an elastic lip.

Möglich ist auch, dass der gesamte Käfig in geringem Ausmaß federnd ausgebildet ist, beispielsweise dann, wenn er als Hohlzylinder ausgebildet ist.It is also possible that the entire cage is resilient to a small extent, for example, when it is designed as a hollow cylinder.

Eine nochmals weitere Möglichkeit zur Bildung der Sicherungseinrichtung kann in dem Anordnen eines Magneten in der Wand des Aufnahmeraums verwirklicht sein.Yet another possibility for forming the securing device can be realized in arranging a magnet in the wall of the receiving space.

Eine nochmals weitere Möglichkeit zur Sicherung kann darin bestehen, dass an dem Käfig ein verschiebbarer oder verkippbarer Riegel vorgesehen ist, der über die Öffnung geschoben oder verkippt wird.A further possibility for securing may be that a displaceable or tiltable latch is provided on the cage, which is pushed or tilted over the opening.

Weitere Merkmale, Einzelheiten und Vorzüge der Erfindung ergeben sich aus den Ansprüchen, deren Wortlaut durch Bezugnahme zum Inhalt der Beschreibung gemacht wird, der folgenden Beschreibung bevorzugter Ausführungsformen der Erfindung sowie anhand der Zeichnung. Hierbei zeigen:

Figur 1
die perspektivische Ansicht einer Ausführungsform der Haltevorrichtung nach der Erfindung;
Figur 2
die Seitenansicht der Haltevorrichtung mit einer schematisch angedeuteten Schraube;
Figur 3
die Seitenansicht der Haltevorrichtung aus einer gegenüber Figur 2 um 90° versetzten Richtung;
Figur 4
die Seitenansicht der Haltevorrichtung von links in Figur 3 bzw. von hinten in Figur 2.
Further features, details and advantages of the invention will become apparent from the claims, the wording of which is incorporated by reference into the content of the description, the following description more preferred Embodiments of the invention and with reference to the drawing. Hereby show:
FIG. 1
the perspective view of an embodiment of the holding device according to the invention;
FIG. 2
the side view of the holding device with a schematically indicated screw;
FIG. 3
the side view of the holding device from one opposite FIG. 2 90 ° offset direction;
FIG. 4
the side view of the holding device from the left in FIG. 3 or from behind in FIG. 2 ,

In Figur 1 ist eine Stecknuss 1 dargestellt, die in ihrem oberen Bereich einen kreiszylindrischen Querschnitt aufweist. Die Stecknuss 1 weist eine in Figur 1 oben dargestellte ebene Stirnfläche 2 mit einer viereckigen Vertiefung 3 auf. Die viereckige Vertiefung dient zur Übertragung eines Drehmoments durch einen elektrischen Schrauber. Die Stecknuss 1 steht in Eingriff mit dem Schraubenkopf einer angedeuteten Schraube 4. Die Stecknuss 1 ist in einem Käfig 5 angeordnet, der einen Aufnahmeraum 6 für die Stecknuss 1 und den Schraubenkopf der Schraube 4 bildet. Im dargestellten Beispiel ist der Käfig 5 von einem Teilzylinder 7 gebildet, der zu der in Figur 1 sichtbaren Vorderseite hin offen ist. An seinen beiden Stirnseiten enthält der als Hohlzylinder 7 ausgebildete Käfig 5 jeweils einen nach innen gerichteten Teilringvorsprung 8 bzw. 9, der sich jeweils über etwa eine halbe Bogenlänge erstreckt.In FIG. 1 a socket 1 is shown, which has a circular cylindrical cross-section in its upper region. The socket 1 has an in FIG. 1 top flat surface 2 shown above with a square recess 3 on. The square recess serves to transmit a torque by an electric screwdriver. The socket 1 is in engagement with the screw head of an indicated screw 4. The socket 1 is arranged in a cage 5, which forms a receiving space 6 for the socket 1 and the screw head of the screw 4. In the example shown, the cage 5 is formed by a partial cylinder 7, which corresponds to the in FIG. 1 visible front is open. At its two end faces, the cage 5 designed as a hollow cylinder 7 contains in each case an inwardly directed partial annular projection 8 or 9, which extends in each case over approximately half the arc length.

Der Außendurchmesser des in Figur 1 oberen kreiszylindrischen Abschnitts der Stecknuss 1 entspricht dem Innendurchmesser des Hohlzylinders 7. Damit ist sichergestellt, dass die Stecknuss 1 sich in dem Käfig 5 allenfalls in Richtung auf die offene Seite hin bewegen kann, nicht aber in sonstige Richtungen. Gegebenenfalls kann zum Erleichtern des Einsteckens der Stecknuss 1 der Innendurchmesser des Hohlzylinders 7 geringfügig größer sein als der Außendurchmesser des kreiszylindrischen Abschnitts der Stecknuss 1.The outer diameter of the in FIG. 1 upper circular cylindrical portion of the socket 1 corresponds to the inner diameter of the hollow cylinder 7. This ensures that the socket 1 is in the cage 5 can move in the direction of the open side, but not in other directions. Optionally, to facilitate the insertion of the socket 1, the inner diameter of the hollow cylinder 7 may be slightly larger than the outer diameter of the circular cylindrical portion of the socket. 1

Nun zu Figur 4. An der oberen Stirnseite 10 des Käfigs 5 ist der Teilringvorsprung 8 ausgebildet, der in den Innenraum des Käfigs 5 hineinragt und damit an seiner Unterseite eine Anlagefläche 11 für die Stirnseite 2 der Stecknuss 1 bildet. Die Radialerstreckung des Teilringvorsprungs 8 ist so gewählt, dass die Vertiefung 3 freibleibt. Der angetriebene Schrauber kann also in die Vertiefung 3 eingreifen.now to FIG. 4 , At the upper end face 10 of the cage 5 of the partial annular projection 8 is formed, which projects into the interior of the cage 5 and thus forms on its underside a contact surface 11 for the end face 2 of the socket 1. The radial extension of the partial annular projection 8 is chosen so that the recess 3 remains free. The driven screwdriver can thus engage in the recess 3.

An der gegenüberliegenden Stirnseite 12 des Käfigs 5 ist der zweite Teilringvorsprung 9 ausgebildet, der ebenfalls in den Innenraum 6 des Käfigs 5 hineinragt und dort eine Anlagefläche für die Unterseite des Schraubenkopfs 13 der Schraube 4 bildet.At the opposite end face 12 of the cage 5, the second partial annular projection 9 is formed, which also projects into the interior 6 of the cage 5 and there forms a contact surface for the underside of the screw head 13 of the screw 4.

In der Darstellung der Figur 1 und Figur 4 ist die Stecknuss auf die Antriebsausbildung des Schraubenkopfs 13 aufgesetzt, es besteht also ein Eingriff zwischen der Stecknuss 1 und dem Schraubenkopf 13. Durch die Anordnung der nach innen ragenden Vorsprünge kann dieser Eingriff dann, wenn die Stecknuss 1 innerhalb des Käfigs 5 angeordnet ist, nicht gelöst werden.In the presentation of the FIG. 1 and FIG. 4 the socket is placed on the drive training of the screw head 13, so there is an engagement between the socket 1 and the screw head 13. The arrangement of the inwardly projecting projections, this engagement, if the socket 1 is disposed within the cage 5, not be solved.

Der Ansicht der Figur 4 kann man auch entnehmen, dass die Vorsprünge 8 und 9 unterschiedlich weit den Innenraum 6 hineinragen. Der Vorsprung 9 muss Platz für den Schraubenschaft 4 lassen, während der Vorsprung 8 den Zugriff auf die Vertiefung 3 der Stirnfläche 2 der Stecknuss 1 zulassen muss.The view of the FIG. 4 it can also be seen that the projections 8 and 9 protrude differently far the interior space 6. The projection 9 must leave room for the screw shaft 4, while the projection 8 must allow access to the recess 3 of the end face 2 of the socket 1.

Die Figur 2 zeigt die Haltevorrichtung aus der entgegengesetzten Richtung gegenüber der Darstellung der Figur 4. In der Wand des Käfigs 5 ist eine Öffnung 14 ausgebildet, in der ein Permanentmagnet 15 angebracht ist. Der Permanentmagnet 15 hält die Stecknuss 1, die in der Regel aus ferromagnetischem Material, also Stahl besteht, fest. Damit wird sichergestellt, dass sich in den normalen Arbeitsbedingungen die Stecknuss 1 gegenüber dem Käfig 5 nicht seitlich verschieben kann.The FIG. 2 shows the holding device from the opposite direction opposite the representation of the FIG. 4 , In the wall of the cage 5, an opening 14 is formed, in which a permanent magnet 15 is mounted. The permanent magnet 15 holds the socket 1, which is usually made of ferromagnetic material, ie steel, fixed. This ensures that in the normal working conditions, the socket 1 with respect to the cage 5 can not move laterally.

Die Achse der Stecknuss und damit der Schraube ist durch eine Markierung 16 in Figur 2 angezeigt.The axis of the socket and thus the screw is marked by a 16 in FIG. 2 displayed.

Nun zu Figur 3. Auch hier ist die Achse durch die Markierung 16 angedeutet. Man kann daher erkennen, dass sich der Käfig nicht nur bis zu der der Markierung 16 entsprechenden axialen Mittelebene erstreckt, sondern über diese Ebene hinaus. Allerdings ist jenseits dieser Ebene die Querschnittsform nicht mehr die eines Kreiszylinders, sondern die Seitenwände verlaufen in diesem Bereich parallel zueinander. Sonst wäre das Einschieben der Stecknuss 1 nicht mehr möglich.now to FIG. 3 , Again, the axis is indicated by the mark 16. It can therefore be seen that the cage extends not only up to the mark center 16 corresponding axial center plane, but beyond this level. However, beyond this plane, the cross-sectional shape is no longer that of a circular cylinder, but the side walls are parallel to each other in this area. Otherwise, the insertion of the socket 1 would no longer be possible.

Die Verwendung der Haltevorrichtung, die von der Erfindung vorgeschlagen wird, geschieht folgendermaßen. Zunächst wird die Stecknuss 1 auf den Schraubenkopf 13 aufgesteckt. Anschließend wird der Käfig 5 von der Seite her auf die Kombination aus Stecknuss 1 und Schraubenkopf 13 aufgeschoben, beispielsweise von rechts in Figur 3. Das Aufschieben geschieht, bis die Mantelfläche der Stecknuss 1 an der Innenseite des Käfigs anliegt. In dieser Position wird die Stecknuss 1 von dem Permanentmagneten 15 festgehalten. Damit ist die Haltevorrichtung funktionsfertig. Der Antrieb des Schraubers wird mit der Vertiefung 3 in der Stirnfläche 2 der Stecknuss 1 verbunden und der Einschraubvorgang kann beginnen. Der Einschraubvorgang kann fortfahren, bis die untere Stirnseite 12 des Käfigs 5 kurz vor der Oberfläche des Materials angeordnet ist, in das die Schraube 4 eingeschraubt wird. Dann kann die Haltevorrichtung abgenommen werden und der Rest dann ohne die Haltevorrichtung weiter geschraubt werden. In diesem Endbereich besteht die Gefahr des Abrutschens nicht mehr.The use of the holding device proposed by the invention is as follows. First, the socket 1 is attached to the screw head 13. Subsequently, the cage 5 is pushed from the side of the combination of socket 1 and screw head 13, for example, from the right in FIG. 3 , Pushing is done until the outer surface of the socket 1 rests against the inside of the cage. In this position, the socket 1 is held by the permanent magnet 15. Thus, the holding device is ready for use. The drive of the screwdriver is connected to the recess 3 in the end face 2 of the socket 1 and the screwing can begin. The screwing process can continue until the lower end face 12 of the cage 5 is located just before the surface of the material into which the screw 4 is screwed. Then the holding device can be removed and the rest then without the Retaining device to be screwed on. In this end, the risk of slipping no longer exists.

Claims (10)

  1. A holding device for a screw head with a socket, with
    1.1 a cage (5), which
    1.2 between two opposite end faces (10, 12) has an accommodation space for the screw head (13) of a screw (4), and a socket (1) that is engaged with the latter,
    1.3 which are essentially immovably accommodated in the accommodation space with respect to their axis of rotation,
    1.4 wherein at least one projection projecting into the accommodation space is arranged at one end face (10) for abutment on the drive side of the socket (1), and
    1.5 at least one projection projecting inwards into the accommodation space is arranged on the other end face for abutment on the underside of the screw head (13) of the screw (4),
    1.6 the axial internal spacing of the projections on the two end faces (10, 12) of the cage (5) corresponds approximately to the spacing between the underside of the screw head (13) and the drive side of the socket (1) that is engaged with the screw head (13), and
    1.7 on one longitudinal side the cage (5) is laterally open, allowing the insertion of the socket (1) that is engaged with the screw head (13), wherein
    1.8 the lateral opening of the cage (5) is designed such that the drive of the screwdriver that is engaged with the drive configuration (3) of the socket (1) can also be inserted laterally.
  2. The holding device in accordance with claim 1, in which the projection on the one end face (10) is in the form of a partial ring projection (8), which leaves free access to the drive configuration of the socket (1).
  3. The holding device in accordance with one of the preceding claims, in which the projection on the end face (12) of the cage (5) assigned to the screw head (13) is in the form of a partial ring projection (9) allowing lateral insertion and passage of the screw shank.
  4. The holding device in accordance with one of the preceding claims, in which the cage (5) is in the form of a partial hollow cylinder, which is divided in particular along an axial plane, and the inside diameter of which corresponds to the outside diameter of the socket (1).
  5. The holding device in accordance with one of the preceding claims, with a security device for purposes of holding the socket (1) in the cage (5).
  6. The holding device in accordance with claim 5, in which the security device has a spring clip.
  7. The holding device in accordance with claim 5 or 6, in which the security device has a permanent magnet (15).
  8. The holding device in accordance with one of the claims 5 - 7, in which the security device is formed by the edges of the lateral opening for insertion of a socket (1) and/or screw head (13) into the cage (5).
  9. The holding device in accordance with claim 8, in which at least one edge of the opening is designed so as to be deformable.
  10. The holding device in accordance with one of the claims 5 - 9, with a movable or tiltable bar arranged on the cage (5) for purposes of at least partially closure of the lateral opening for insertion of the socket (1) and/or screw head (13).
EP13187107.1A 2012-10-31 2013-10-02 Holding device for a screw head with nut Active EP2727685B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012219944.6A DE102012219944A1 (en) 2012-10-31 2012-10-31 Holding device for a screw head with nut

Publications (3)

Publication Number Publication Date
EP2727685A2 EP2727685A2 (en) 2014-05-07
EP2727685A3 EP2727685A3 (en) 2015-04-15
EP2727685B1 true EP2727685B1 (en) 2019-03-13

Family

ID=49322214

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13187107.1A Active EP2727685B1 (en) 2012-10-31 2013-10-02 Holding device for a screw head with nut

Country Status (2)

Country Link
EP (1) EP2727685B1 (en)
DE (1) DE102012219944A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191328448A (en) * 1913-12-09 1914-08-13 John Walton Robinson Improved Device for Holding the Point of a Screw Driver in the Notch of a Screw Head during Screwing.
US3178971A (en) * 1963-09-27 1965-04-20 Chicago Specialty Mfg Co Socket wrench
US4744273A (en) * 1986-08-08 1988-05-17 Bartok Jr William P Fastener retaining attachment for wrench sockets
US4939959A (en) * 1989-10-10 1990-07-10 Stephen Rokita Fastener holding tool

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
DE102012219944A1 (en) 2014-04-30
EP2727685A2 (en) 2014-05-07
EP2727685A3 (en) 2015-04-15

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