EP2756924A2 - Adjustment of a torque wrench - Google Patents
Adjustment of a torque wrench Download PDFInfo
- Publication number
- EP2756924A2 EP2756924A2 EP13198489.0A EP13198489A EP2756924A2 EP 2756924 A2 EP2756924 A2 EP 2756924A2 EP 13198489 A EP13198489 A EP 13198489A EP 2756924 A2 EP2756924 A2 EP 2756924A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- spindle
- handle
- adjusting ring
- torque wrench
- shaft
- 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.)
- Granted
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- 238000006073 displacement reaction Methods 0.000 claims description 10
- 239000000725 suspension Substances 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 2
- 230000008878 coupling Effects 0.000 description 10
- 238000010168 coupling process Methods 0.000 description 10
- 238000005859 coupling reaction Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
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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
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
- B25B23/142—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers
- B25B23/1422—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters
- B25B23/1427—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters by mechanical means
Definitions
- the present invention relates to a torque wrench according to the features in the preamble of claim 1.
- Torque wrenches are used to tighten screw connections with a predetermined torque.
- screw for example, wheel nuts of a motor vehicle or even long screws for coupling a cylinder head on an internal combustion engine, which must be tightened with a predetermined torque, on the one hand at a low tightening torque, an independent release and the other at too high tightening torque to avoid damage to the screw or adjacent components.
- a torque wrench has a handle at a free end to be operated by an applying fitter, and at the opposite end thereof a ratchet head that quickly modifies a torque wrench for a particular bolted connection by inserting sockets or nuts.
- torque wrenches usually have a trigger mechanism, consisting of a prestressable spring and a triggering lever, wherein the biasing force of the spring is adjustable by a rotation of the handle on the shaft of a torque wrench. If the torque wrench is then used for tightening a screw connection and the screw connection reaches the set triggering torque, then the lever strikes against an inside of the housing and gives a haptic and / or acoustic feedback to the user using the triggering torque.
- torque wrenches For the production of torque wrenches, however, it is first necessary that the individual parts of the torque wrench be made separately from each other and then assembled.
- the so completed torque wrench first requires a pre-setting and then a fine adjustment of the adjustable torque, so that in later use operation a user fitter can be sure by turning the handle when setting a tripping torque, which is for example displayed on the handle with a scale the set torque corresponds to the desired triggering torque value.
- Object of the present invention is therefore, starting from the prior art, to simplify the Feinjustleitersdorfkeit a torque wrench and to produce such a torque wrench cheaper.
- the torque wrench according to the invention for tightening or loosening a screw connection has a shank and a handle disposed at one end of the shank, wherein on the opposite end of the handle a receptacle for a positive screw connection can be coupled, which in particular a ratchet head with square for receiving a Socket can be.
- a relative rotation of the handle relative to the shaft biased by a spring triggering mechanism is arranged, with which a release torque is adjustable, wherein the trigger mechanism has a spindle which is positively coupled to the handle and the trigger mechanism is pre-adjustable.
- the torque wrench is characterized in that an adjusting ring is provided at a free end of the handle and the adjusting ring is coupled to the spindle via a positive engagement, wherein for performing the adjustment of the adjusting ring in the axial direction on the spindle is displaceable, so that the handle is no longer in rotationally fixed engagement with the spindle, wherein by turning the adjusting ring, the spindle is movable.
- the adjustment process thus means a first pre-adjustment or readjustment in the production of the torque wrench as well as a readjustment already taking place during the use of the torque wrench.
- an adjustment process is to be understood as meaning that the triggering mechanism is finely adjusted in such a way that a respective relative rotation of the Handle made setting a release torque also corresponds to the torque applied to the screw.
- the present invention provides two different ways to make a positive connection between the handle and spindle, and thus also for releasing the positive connection between the handle and spindle before.
- the positive connection between the handle and spindle is caused by a direct and thus direct interlocking of the handle and spindle.
- the adjusting ring is also positively interlocked with the spindle and / or with the handle.
- it is therefore necessary that the interlocking toothing between the handle and spindle is released, which according to the invention by an axial displacement of the handle relative to the spindle, so that the toothing between the handle and spindle is no longer in positive engagement.
- the handle is thus freely rotatable without causing a rotational movement of the spindle drive.
- the present invention now provides that the adjusting ring is still positively engaged with the spindle and the desired torque is adjusted by turning the adjusting ring and concomitant rotation of the spindle. If the desired torque of the pre-adjustment is set, the handle is aligned with the existing on the torque wrench display and brought by axial displacement in positive engagement with the teeth.
- a lock nut which is arranged at the end of the spindle, now accidental or unwanted axial movement of the handle relative to the spindle is avoided.
- the handle is always relatively rotatable relative to the spindle.
- a non-rotatable connection between Handle and spindle are produced indirectly via the adjusting ring.
- the adjusting ring is positively and rotationally coupled to the spindle and in turn has a toothing possibility, which is positively engageable with the handle.
- the present invention is further characterized in that the handle is coupled via a positive connection with the spindle, wherein the handle in particular a mecanicalfachkantENS, preferably a hexagon socket, and the mecanicalfachkanttagen form-fitting in a corresponding Budapestiolofachkanteducation, more preferably an external hex, the spindle engages or receives this.
- the manufacturing cost of the torque tool can be significantly reduced, with no additional components in the form of splints or the like for producing the twist-proof coupling of the handle and spindle are necessary. Rather, it is possible to couple the handle and the spindle by simple, interlocking nesting together.
- the spindle is preferably formed in one piece and of uniform material.
- the handle is coupled by a lock nut at the end of the spindle.
- the lock nut is then not listed on the spindle or released from the spindle and then the handle at least so far moved back in the axial direction that the positive engagement between the Mehrfachkantthetic of the spindle and handle no longer exists.
- the handle can thus be rotated relative to the spindle. Consequently, a rotation of the handle does not cause any movement of the spindle.
- the spindle can then be pre-adjusted independently of the handle and thereby performs a tensioning or relaxing movement of the spring.
- a torque value is set, which is then adjusted by turning the handle also on the display of the handle and by further axial displacement of the handle relative to the spindle such that the handle and spindle come into positive engagement, so determined that now a pre-adjustment or Fine adjustment has taken place.
- This may be an initial setting in the production of the torque wrench itself or else a readjustment after intensive use or in maintenance intervals of the torque wrench.
- the pre-adjustment is carried out in the context of the invention on the Justierring, wherein in the Vorjust istsposition the Justierring with the spindle is in positive engagement.
- the adjusting ring is therefore preferably coupled positively and non-rotatably with the spindle.
- the invention provides that the adjusting ring is then still in positive engagement with the spindle when the handle is no longer in positive engagement with the spindle.
- a rotation of the adjusting ring then leads to a process of the spindle and thus to a clamping movement of the spring, wherein this is done independently of the handle.
- the spindle has an external toothing in particular in the region of the adjusting ring and the adjusting ring itself has a corresponding internal toothing, wherein the adjusting ring and the spindle are axially displaceable, but nevertheless non-rotatable in the Are engaged.
- the teeth are an external hexagon and a corresponding hexagon socket.
- the positive engagement of the Justierrings in the normal position of use and the optional positive coupling of Justierring and handle in the context of the invention again has the advantage that in the normal use position resulting from the rotation of the handle force to drive and process the spindle for a over the positive engagement between the handle and spindle, on the other hand, but also on the positive engagement between the adjusting ring and spindle is transferred from the hand of the applying mechanic to the spindle.
- the spindle is movable relative to the shaft, a spindle nut is provided in the shaft end, which is fixedly and positively coupled to the shaft end.
- a rotation of the spindle in the spindle nut thus leads to a relative movement of the spindle relative to the shaft in the axial direction, wherein in the shaft itself, in turn, a spring is provided which is stretched or relaxed due to the movement of the spindle.
- the adjusting ring preferably has tooth-like extensions oriented in the axial direction, which can be brought into corresponding recesses of the handle for engagement. In the normal use position, therefore, if the handle and / or the adjusting ring are not in the position for pre-adjustment, thus adjusting ring and handle are in positive engagement. If now the handle, but also the adjusting ring brought into the Vorjustierposition, and the positive connection between the handle and adjusting ring is released. This allows in particular the independent adjustment of the position of the spindle and the position of the handle with corresponding display of the set torque.
- the adjusting ring in the invention at its free end at least one recess, wherein in the recess a rotating about the longitudinal axis of the spindle adjusting tool can be coupled.
- it is a mechanical adjustment tool, so that in an at least partially automated production of the torque wrench, the adjustment tool can be coupled to the alignment ring and a process in the axial direction of the spindle is performed by rotation.
- the adjusting ring and / or the handle are pushed in the axial direction to the shaft and coupled by a lock nut on the spindle.
- a closure cap is then particularly preferably incorporated into the adjusting ring itself, which on the one hand prevents the ingress of dirt. Furthermore, it is possible to make a readjustment by removing the cap relative to the adjusting ring and loosening the lock nut.
- the adjusting ring itself is thus accessible from the outside. It is not necessary to disassemble the torque wrenches largely or completely to make an adjustment in the context of the invention, which is particularly advantageous in a Nachjustiervorgang.
- the adjusting ring itself is furthermore particularly preferably designed such that it can be reached by hand and can also be adjusted by manual intervention. Thus, inevitably no special adjustment tool or a motor drive an adjustment tool is necessary to make in particular a readjustment of the torque wrench.
- the adjusting ring therefore at its free end on a grip option, for example, according to the principle of a wing nut.
- the adjusting ring further has such a receptacle for an adjusting tool, in particular a motor-driven adjusting tool, so that the torque wrench over this at least partially mechanized or can be automatically adjusted.
- a suspension loop is integrally formed on the handle and / or the adjusting ring and uniform material, with which it is possible to hang the torque wrench on a tool wall or the like when not in use. Due to the solid, positive connection of both handle as well as adjusting ring with the shaft and thus the torque wrench, the entire torque wrench can be hung when not in use.
- a wrist strap or safety line it is possible within the scope of the invention to guide through the suspension loop a wrist strap or safety line, so that here, for example, a fall protection is given, so that the user fitter who accidentally slip the torque wrench from his hand, prevents this on the Floor hits.
- a fall protection is given, so that the user fitter who accidentally slip the torque wrench from his hand, prevents this on the Floor hits.
- the torque wrench may be hung, for example, on a wire rope with return spring, so that it is easily accessible to a user fitter and in turn can be easily moved out of the field.
- FIG. 1 shows a torque wrench 1 according to the invention in a plan view. Shown are a shaft 2 and arranged at the end of the shaft 2 handle 3. The handle 3 is rotatable about the central longitudinal axis 4 of the shaft 2 and is thereby moved in the axial direction A. In this case, a release mechanism, not shown, is biased within the shaft 2 such that a desired release torque is adjustable. The respective torque value can be read on a display 5. So now a pre-adjustment or fine adjustment of the set Torque can be performed, according to the invention at the handle end 6 an adjusting ring 7 is arranged.
- FIGS. 2a and b each have a longitudinal sectional view along the central longitudinal axis 4 of the torque wrench 1 of FIG. 1 shows.
- FIG. 2a First, a use position is shown.
- the handle 3 itself is arranged relatively rotatable about the central longitudinal axis 4 of the shaft 2. So that no unwanted adjustment is carried out according to the desired set release torque, a latching mechanism 8 is provided, by means of which the handle 3 and the shaft 2 are positively fixed to one another.
- a spindle nut 10 is fixed in position on the shaft end 9 in the shaft 2. This is illustrated by two cylindrical pins or grub screws 11.
- a spindle 12 which is displaceable in the axial direction A by rotational movement, is mounted.
- the spindle 12 itself is positively and rotatably coupled to the handle 3 via a spindle 12 provided on the outer hexagon 13 and a corresponding hexagon socket 14 in the handle 3 with each other.
- a lock nut 16 is provided at the spindle end 15, which prevents axial displacement of the handle 3 relative to the spindle 12.
- the external hexagon 13 is hereby alternatively designed to be axially displaceable on the spindle 12 as a nut. It is thus possible, an indirect coupling between the handle 3 and spindle 12 via the adjusting ring 7, in particular on the in FIGS. 3a and 3b shown teeth 20 and recesses 21 to produce. It is thus set the distance in the axial direction A by turning the hexagon socket 13 as a nut relative to the spindle 12 and then the spindle 12 is indirectly rotatably coupled via the adjusting ring 7 with the handle 3.
- the spindle 12 undergoes a rotational movement, on the other hand, the spindle 12 is moved in the axial direction A.
- a spindle head 17 then biases a spring, not shown, and sets a desired release torque over it.
- the positive coupling between the handle 3 and spindle 12 is detachable, the spindle 12 is pre-adjustable or finely adjusted and then the coupling between the handle 3 and spindle 12 again fixed is.
- the pre-adjustment process is in FIG. 2b shown.
- the lock nut 16 is released and the handle 3 in the axial direction A on the spindle 12 on the image plane relative pushed to the right.
- the external hex 13 is therefore no longer in positive engagement with the hexagon socket 14.
- the handle 3 is thus freely rotatable in this position in this position relative to the shaft 2, without causing a rotational movement or movement of the spindle 12.
- the adjusting ring 7 is positively coupled with an internal toothing 18 and against rotation to an external toothing 19.
- a rotational movement of the adjusting ring 7 it is thus possible to cause a rotational movement of the spindle 12, regardless of the handle position.
- a possible positive engagement between adjusting ring 7 and handle 3 is negligible at this point. If, however, a positive interlocking of adjusting ring 7 and handle 3 be provided here, it would still be possible, the adjusting ring 7, in FIG.
- the handle 3 When this setting of the release torque is made, the handle 3 is moved to the desired position of the in FIG. 1 rotated display 5 so that the torque value displayed on the display 5 with the set triggering torque the trigger mechanism not shown matches. Then adjusting ring 7 and handle 3 in the axial direction A, based on the image plane to the left, moved and connected by means of the lock nut 16 fixed to the spindle 12.
- FIG. 3a and b show this structure again in a perspective exploded view. Shown are the loosened from the spindle end 15 lock nut 16 and each pulled apart in the axial direction A components. Good to see the internal teeth 18 of the adjusting ring 7, which is axially movable in the assembled state with the external teeth 19 of the spindle 12 can be brought into positive engagement. Also clearly visible is the inner double hexagon 14 of the handle 3, which can be brought into engagement with the external hexagon 13 of the spindle 12 in the normal position.
- FIG. 3b illustrated that a recess 22 is provided, wherein in the recess 22 in the axial direction A an adjusting tool can be inserted and by performing a rotational movement of the adjusting ring 7 is rotatable.
- the adjusting ring 7 is not fixed to a mere ring shape, but is also designed as at least partially cylindrical body which can be inserted into a hollow handle end 6.
- the adjusting ring 7 further has an open surface with internal teeth 24 at its end, in which a cap, not shown, can be inserted.
- FIG. 1 and 2a a hanging loop 23 on the adjusting ring 7, which is material-uniform and integrally connected thereto to hang the torque wrench 1 when not in use at this.
- the handle 3 and / or the adjusting ring 7 are preferably made of a plastic material.
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Abstract
Description
Die vorliegende Erfindung betrifft einen Drehmomentschlüssel gemäß den Merkmalen in Oberbegriff von Anspruch 1.The present invention relates to a torque wrench according to the features in the preamble of
Drehmomentschlüssel werden dazu genutzt, um Schraubverbindungen mit einem vorbestimmten Drehmoment anzuziehen. Hierbei gibt es Schraubverbindungen, beispielsweise Radmuttern eines Kraftfahrzeuges oder aber auch Langschrauben zur Koppelung eines Zylinderkopfes auf einer Verbrennungskraftmaschine, die mit einem vorgegebenen Drehmoment angezogen werden müssen, um zum einen bei einem zu geringen Anzugsdrehmoment ein sich selbständiges Lösen und zum anderen bei einem zu hohen Anzugsdrehmoment eine Beschädigung der Schraubverbindung oder aber angrenzender Bauteile zu vermeiden.Torque wrenches are used to tighten screw connections with a predetermined torque. Here there are screw, for example, wheel nuts of a motor vehicle or even long screws for coupling a cylinder head on an internal combustion engine, which must be tightened with a predetermined torque, on the one hand at a low tightening torque, an independent release and the other at too high tightening torque to avoid damage to the screw or adjacent components.
In der Regel weist ein Drehmomentschlüssel an einem freien Ende einen Griff auf, um von einem anwendenden Monteur betätigt zu werden, und an dem diesen gegenüberliegenden Ende einen Ratschenkopf, der durch Aufstecken von Steckschlüsseln bzw. Nüssen einen Drehmomentschlüssel für eine jeweilige Schraubverbindung schnell modifiziert.Typically, a torque wrench has a handle at a free end to be operated by an applying fitter, and at the opposite end thereof a ratchet head that quickly modifies a torque wrench for a particular bolted connection by inserting sockets or nuts.
Es ist also notwendig, dass ein Drehmomentschlüssel ein hoch präzises Anzugsdrehmoment auf eine Schraubverbindung aufbringt. Weiterhin sollte ein Drehmomentwerkzeug jedoch, um einem breiten Einsatzspektrum zugänglich zu sein, ein einstellbares Auslösedrehmoment besitzen. Hierzu besitzen Drehmomentschlüssel in der Regel eine Auslösemechanik, bestehend aus einer vorspannbaren Feder und einem auslösenden Hebel, wobei die Vorspannkraft der Feder durch ein Verdrehen des Griffes an dem Schaft eines Drehmomentschlüssels einstellbar ist. Wird dann der Drehmomentschlüssel zum Anziehen einer Schraubverbindung genutzt und erreicht die Schraubverbindung das eingestellte Auslösedrehmoment, so schlägt der Hebel gegen eine Innenseite des Gehäuses und gibt dabei eine haptische und/oder akustische Rückmeldung dem anwendenden Monteur, dass das Auslösedrehmoment erreicht ist.It is therefore necessary for a torque wrench to apply a high-precision tightening torque to a screw connection. Furthermore, however, a torque tool should have an adjustable firing torque to be accessible to a wide range of applications. For this purpose, torque wrenches usually have a trigger mechanism, consisting of a prestressable spring and a triggering lever, wherein the biasing force of the spring is adjustable by a rotation of the handle on the shaft of a torque wrench. If the torque wrench is then used for tightening a screw connection and the screw connection reaches the set triggering torque, then the lever strikes against an inside of the housing and gives a haptic and / or acoustic feedback to the user using the triggering torque.
Zur Fertigung von Drehmomentschlüsseln ist es hier jedoch zunächst notwendig, dass die einzelnen Teile des Drehmomentschlüssels getrennt voneinander gefertigt werden und dann zusammengesetzt werden. Der so komplettierte Drehmomentschlüssel bedarf zunächst einer Voreinstellung und dann einer Feinjustierung des einstellbaren Drehmoments, so dass im späteren Benutzungsbetrieb ein anwendender Monteur durch Verdrehen des Griffes bei Einstellen eines Auslösedrehmoments, welches ihm beispielsweise auf dem Griff mit einer Skala angezeigt wird, sicher gehen kann, dass das eingestellte Drehmoment dem von ihm gewünschten Auslösedrehmomentwert entspricht.For the production of torque wrenches, however, it is first necessary that the individual parts of the torque wrench be made separately from each other and then assembled. The so completed torque wrench first requires a pre-setting and then a fine adjustment of the adjustable torque, so that in later use operation a user fitter can be sure by turning the handle when setting a tripping torque, which is for example displayed on the handle with a scale the set torque corresponds to the desired triggering torque value.
Hierzu ist beispielsweise in der
Aufgabe der vorliegenden Erfindung ist es daher, ausgehend vom Stand der Technik, die Feinjustierungsmöglichkeit eines Drehmomentschlüssels zu vereinfachen und einen solchen Drehmomentschlüssel kostengünstiger zu fertigen.Object of the present invention is therefore, starting from the prior art, to simplify the Feinjustierungsmöglichkeit a torque wrench and to produce such a torque wrench cheaper.
Die zuvor genannte Aufgabe wird erfindungsgemäß durch einen Drehmomentschlüssel mit den Merkmalen im Anspruch 1 gelöst.The aforementioned object is achieved by a torque wrench with the features in
Vorteilhafte Ausgestaltungen der vorliegenden Erfindung sind Gegenstand der abhängigen Ansprüche.Advantageous embodiments of the present invention are the subject of the dependent claims.
Der erfindungsgemäße Drehmomentschlüssel zum Anziehen oder Lösen einer Schraubverbindung weist einen Schaft auf und einen an einem Ende des Schaftes angeordneten Griff, wobei auf dem dem Griff gegenüberliegenden Ende des Schaftes eine Aufnahme für eine formschlüssige Schraubverbindung koppelbar ist, welche insbesondere einen Knarrenkopf mit Vierkant zur Aufnahme eines Steckschlüssels sein kann. In dem Schaft ist eine durch relatives Drehen des Griffes gegenüber dem Schaft über eine Feder vorspannbare Auslösemechanik angeordnet, mit der ein Auslösedrehmoment einstellbar ist, wobei die Auslösemechanik eine Spindel aufweist, die formschlüssig mit dem Griff koppelbar ist und die Auslösemechanik vorjustierbar ist. Erfindungsgemäß ist der Drehmomentschlüssel dadurch gekennzeichnet, dass ein Justierring an einem freien Ende des Griffes vorgesehen ist und der Justierring mit der Spindel über einen formschlüssigen Eingriff gekoppelt ist, wobei zur Durchführung der Justierung der Justierring in Axialrichtung auf der Spindel verschiebbar ist, so dass der Griff nicht mehr in verdrehfestem Eingriff mit der Spindel ist, wobei durch Drehen des Justierrings die Spindel verfahrbar ist.The torque wrench according to the invention for tightening or loosening a screw connection has a shank and a handle disposed at one end of the shank, wherein on the opposite end of the handle a receptacle for a positive screw connection can be coupled, which in particular a ratchet head with square for receiving a Socket can be. In the shaft by a relative rotation of the handle relative to the shaft biased by a spring triggering mechanism is arranged, with which a release torque is adjustable, wherein the trigger mechanism has a spindle which is positively coupled to the handle and the trigger mechanism is pre-adjustable. According to the invention the torque wrench is characterized in that an adjusting ring is provided at a free end of the handle and the adjusting ring is coupled to the spindle via a positive engagement, wherein for performing the adjustment of the adjusting ring in the axial direction on the spindle is displaceable, so that the handle is no longer in rotationally fixed engagement with the spindle, wherein by turning the adjusting ring, the spindle is movable.
Im Rahmen der Erfindung ist unter dem Justiervorgang somit ein erstes Vor- bzw. Einjustieren in der Fertigung des Drehmomentschlüssels zu verstehen sowie auch ein bereits während der Nutzung des Drehmomentschlüssels erfolgendes Nachjustieren. Mithin ist unter einem Justiervorgang zu verstehen, dass die Auslösemechanik derart feinjustiert wird, dass ein jeweils über Relativverdrehen des Griffes erfolgtes Einstellen eines Auslösedrehmoments auch dem auf die Schraubverbindung aufgebrachten Drehmoment entspricht.In the context of the invention, the adjustment process thus means a first pre-adjustment or readjustment in the production of the torque wrench as well as a readjustment already taking place during the use of the torque wrench. Thus, an adjustment process is to be understood as meaning that the triggering mechanism is finely adjusted in such a way that a respective relative rotation of the Handle made setting a release torque also corresponds to the torque applied to the screw.
Hierzu ist es im Rahmen der Erfindung zum Einstellen des Auslösedrehmoments durch relatives Verdrehen des Griffes gegenüber dem Schaft notwendig, dass der Griff selbst formschlüssig mit dem Spindelantrieb derart gekoppelt ist, dass ein Drehen des Griffes ein axiales Verfahren der Spindel gegenüber dem Schaft hervorruft. Um nunmehr die Justierung vorzunehmen, muss jedoch diese formschlüssige Verbindung zwischen Spindel und Griff gelöst sein. Hierzu sieht die vorliegende Erfindung zwei verschiedene Möglichkeiten zum Herstellen einer formschlüssigen Verbindung zwischen Griff und Spindel, und somit auch zum Lösen der formschlüssigen Verbindung zwischen Griff und Spindel, vor.For this purpose, it is necessary in the context of the invention for adjusting the release torque by relative rotation of the handle relative to the shaft that the handle itself is positively coupled to the spindle drive such that rotation of the handle causes an axial movement of the spindle relative to the shaft. To make the adjustment now, however, this positive connection between the spindle and the handle must be solved. For this purpose, the present invention provides two different ways to make a positive connection between the handle and spindle, and thus also for releasing the positive connection between the handle and spindle before.
Zum einen ist es möglich, dass die formschlüssige Verbindung zwischen Griff und Spindel über eine ummittelbar und somit direkte Verzahnung von Griff und Spindel hervorgerufen ist. Optional ist es dann dazu möglich, dass der Justierring ebenfalls formschlüssig mit der Spindel und/oder mit dem Griff verzahnt ist. Zur Ausführung bei dieser Variante ist es somit zunächst notwendig, dass die formschlüssige Verzahnung zwischen Griff und Spindel gelöst wird, was erfindungsgemäß durch ein axiales Verschieben des Griffes gegenüber der Spindel erfolgt, so dass die Verzahnung zwischen Griff und Spindel nicht mehr im formschlüssigen Eingriff ist. Der Griff ist somit frei drehbar, ohne eine Drehbewegung des Spindelantriebs hervorzurufen. Hier sieht die vorliegende Erfindung nunmehr vor, dass der Justierring dennoch formschlüssig mit der Spindel in Eingriff ist und das gewünschte Drehmoment durch Verdrehen des Justierrings und damit einhergehendes Verdrehen der Spindel eingestellt wird. Ist das gewünschte Drehmoment der Vorjustage eingestellt, wird der Griff an der an dem Drehmomentschlüssel vorhandenen Anzeige ausgerichtet und durch axiales Verschieben in formschlüssigen Eingriff mit der Verzahnung gebracht. Durch beispielsweise eine Sicherungsmutter, die am Ende der Spindel angeordnet wird, ist nunmehr ein versehentliches oder aber ungewolltes axiales Bewegen des Griffes gegenüber der Spindel vermieden.On the one hand, it is possible that the positive connection between the handle and spindle is caused by a direct and thus direct interlocking of the handle and spindle. Optionally, it is then possible that the adjusting ring is also positively interlocked with the spindle and / or with the handle. To carry out this variant, it is therefore necessary that the interlocking toothing between the handle and spindle is released, which according to the invention by an axial displacement of the handle relative to the spindle, so that the toothing between the handle and spindle is no longer in positive engagement. The handle is thus freely rotatable without causing a rotational movement of the spindle drive. Here, the present invention now provides that the adjusting ring is still positively engaged with the spindle and the desired torque is adjusted by turning the adjusting ring and concomitant rotation of the spindle. If the desired torque of the pre-adjustment is set, the handle is aligned with the existing on the torque wrench display and brought by axial displacement in positive engagement with the teeth. By example, a lock nut, which is arranged at the end of the spindle, now accidental or unwanted axial movement of the handle relative to the spindle is avoided.
Alternativ dazu ist es im Rahmen der Erfindung möglich, dass der Griff immer relativ auch gegenüber der Spindel drehbar ist. Eine verdrehfeste Verbindung zwischen Griff und Spindel wird mittelbar über den Justierring hergestellt. So ist der Justierring formschlüssig und verdrehfest mit der Spindel gekoppelt und weist selbst wiederum eine Verzahnungsmöglichkeit auf, die formschlüssig mit dem Griff in Eingriff bringbar ist. Wird nunmehr der Formschluss zwischen Griff und Justierring, beispielsweise durch axiales Verschieben des Justierringes, gelöst, ist es durch ein Verdrehen des Justierrings möglich, die Spindel zu verfahren und dabei das gewünschte Auslösedrehmoment im Rahmen der Vorjustierung einzustellen. Der Griff ist dann frei drehbar und kann auf den gewünschten Wert der Skala gedreht werden. Sodann wird durch axiales Verschieben des Justierrings gegenüber der Spindel der Justierring in formschlüssigen Eingriff mit dem Griff gebracht, wodurch der Griff dann wiederum mittelbar verdrehfest mit der Spindel gekoppelt ist. Nach Durchführung der axialen Verschiebebewegung ist es dann wiederum möglich, gegen ein unbeabsichtigtes oder aber ungewolltes Verschieben den Justierring zusammen mit dem Griff mittels einer Kontermutter bzw. Sicherungsmutter am Ende der Spindel zu sichern.Alternatively, it is possible in the context of the invention that the handle is always relatively rotatable relative to the spindle. A non-rotatable connection between Handle and spindle are produced indirectly via the adjusting ring. Thus, the adjusting ring is positively and rotationally coupled to the spindle and in turn has a toothing possibility, which is positively engageable with the handle. Now, if the positive connection between the handle and adjusting ring, for example, by axial displacement of the adjusting, solved, it is possible by rotating the adjusting ring to move the spindle while adjusting the desired release torque in the context of pre-adjustment. The handle is then freely rotatable and can be turned to the desired value of the scale. Then is brought by axial displacement of the adjusting ring relative to the spindle of the adjusting ring in positive engagement with the handle, whereby the handle is then in turn indirectly rotationally coupled to the spindle. After carrying out the axial displacement movement, it is then possible again to secure against unintentional or unintentional displacement of the adjusting ring together with the handle by means of a lock nut or lock nut at the end of the spindle.
Die vorliegende Erfindung ist weiterhin dadurch gekennzeichnet, dass der Griff über eine formschlüssige Verbindung mit der Spindel gekoppelt ist, wobei der Griff insbesondere eine Innenmehrfachkantverbindung, bevorzugt einen Innensechskant, aufweist und die Innenmehrfachkantverbindung formschlüssig in eine dazu korrespondierende Außenmehrfachkantverbindung, besonders bevorzugt einen Außensechskant, der Spindel eingreift bzw. diesen aufnimmt. Hierdurch ist es im Rahmen der Erfindung möglich, eine formschlüssige, verdrehsichere Verbindung zwischen Spindel und Griff herzustellen, die bei einem aus Kunststoff hergestellten Griff und einer aus metallischem Werkstoff hergestellten Spindel, selbst bei mehrjähriger intensiver Benutzung des Drehmomentschlüssels, eine verdrehsichere Kopplung von Spindel und Griff sicherstellt. Hierdurch können die Herstellungskosten des Drehmomentwerkzeugs deutlich gesenkt werden, wobei keine zusätzlichen Bauteile in Form von Splinten oder ähnlichem zur Herstellung der verdrehsicheren Koppelung von Griff und Spindel notwendig sind. Vielmehr ist es möglich, den Griff sowie die Spindel durch einfaches, formschlüssiges Ineinanderstecken miteinander zu koppeln. Die Spindel ist bevorzugt einstückig und werkstoffeinheitlich ausgebildet. Hierzu wird dann bevorzugt im Rahmen der Erfindung zur Durchführung der Vorjustierung der Griff in axialer Richtung gegenüber der Spindel verschoben, so dass kein formschlüssiger Eingriff zwischen Spindel und Griff mehr vorhanden ist. Bevorzugt ist der Griff durch eine Sicherungsmutter am Ende der Spindel gekoppelt. Zur Durchführung der Vorjustierung wird dann die Sicherungsmutter zunächst nicht auf die Spindel aufgeführt bzw. von der Spindel gelöst und der Griff dann in axialer Richtung mindestens so weit zurück bewegt, dass der formschlüssige Eingriff zwischen der Mehrfachkantverbindung von Spindel und Griff nicht mehr besteht. Der Griff kann somit relativ gegenüber der Spindel verdreht werden. Mithin ruft eine Verdrehung des Griffes keine Verfahrbewegung der Spindel auf. Die Spindel kann dann unabhängig von dem Griff vorjustiert werden und führt dabei eine Spann- bzw. Entspannbewegung der Feder aus. Hierzu wird dann ein Drehmomentwert eingestellt, der anschließend durch Verdrehen des Griffes ebenfalls an der Anzeige des Griffes eingestellt wird und durch weiteres axiales Verschieben des Griffes gegenüber der Spindel derart, dass Griff und Spindel in formschlüssigem Eingriff kommen, so festgelegt, dass nunmehr eine Vorjustierung bzw. Feinjustierung stattgefunden hat. Dabei kann es sich um eine Ersteinstellung in der Fertigung des Drehmomentschlüssels selber oder aber auch um eine Nachjustierung nach intensiver Nutzung oder in Wartungsintervallen des Drehmomentschlüssels handeln. Bevorzugt erfolgt die Vorjustierung im Rahmen der Erfindung über den Justierring, wobei in der Vorjustierungsposition der Justierring mit der Spindel in formschlüssigem Eingriff steht.The present invention is further characterized in that the handle is coupled via a positive connection with the spindle, wherein the handle in particular a Innenmehrfachkantverbindung, preferably a hexagon socket, and the Innenmehrfachkantverbindung form-fitting in a corresponding Außenmehrfachkantverbindung, more preferably an external hex, the spindle engages or receives this. This makes it possible within the scope of the invention to produce a positive, torsion-proof connection between the spindle and the handle, which in a handle made of plastic and a spindle made of metallic material, even with multi-year intensive use of the torque wrench, a twist-proof coupling of the spindle and handle ensures. As a result, the manufacturing cost of the torque tool can be significantly reduced, with no additional components in the form of splints or the like for producing the twist-proof coupling of the handle and spindle are necessary. Rather, it is possible to couple the handle and the spindle by simple, interlocking nesting together. The spindle is preferably formed in one piece and of uniform material. For this purpose, preferably in the context of the invention for performing the pre-adjustment of the handle in the axial direction relative to the spindle is moved, so that no positive engagement between the spindle and handle is more present. Preferably, the handle is coupled by a lock nut at the end of the spindle. To perform the pre-adjustment, the lock nut is then not listed on the spindle or released from the spindle and then the handle at least so far moved back in the axial direction that the positive engagement between the Mehrfachkantverbindung of the spindle and handle no longer exists. The handle can thus be rotated relative to the spindle. Consequently, a rotation of the handle does not cause any movement of the spindle. The spindle can then be pre-adjusted independently of the handle and thereby performs a tensioning or relaxing movement of the spring. For this purpose, a torque value is set, which is then adjusted by turning the handle also on the display of the handle and by further axial displacement of the handle relative to the spindle such that the handle and spindle come into positive engagement, so determined that now a pre-adjustment or Fine adjustment has taken place. This may be an initial setting in the production of the torque wrench itself or else a readjustment after intensive use or in maintenance intervals of the torque wrench. Preferably, the pre-adjustment is carried out in the context of the invention on the Justierring, wherein in the Vorjustierungsposition the Justierring with the spindle is in positive engagement.
Der Justierring ist mithin vorzugsweise formschlüssig und verdrehsicher mit der Spindel gekoppelt. Bei axialem Verschieben des Griffes wird auch der Justierring axial verschoben, wobei erfindungsgemäß vorgesehen ist, dass der Justierring dann noch in formschlüssigem Eingriff mit der Spindel ist, wenn der Griff bereits nicht mehr in formschlüssigem Eingriff mit der Spindel ist. Ein Verdrehen des Justierrings führt dann zu einem Verfahren der Spindel und mithin zu einer Spannbewegung der Feder, wobei dies unabhängig von dem Griff erfolgt. Hierzu weist die Spindel insbesondere im Bereich des Justierrings eine Außenverzahnung auf und der Justierring selbst eine dazu korrespondierende Innenverzahnung, wobei der Justierring und die Spindel axial verschiebbar sind, aber dennoch verdrehsicher im Eingriff sind. Insbesondere handelt es sich bei den Verzahnungen um einen Außensechskant und einen dazu korrespondierenden Innensechskant. Der formschlüssige Eingriff des Justierrings auch in der normalen Benutzungsposition sowie das optionale formschlüssige Koppeln von Justierring und Griff hat im Rahmen der Erfindung wiederum den Vorteil, dass in der normalen Gebrauchsposition die bei der Verdrehung des Griffes entstehende Kraft zum Antrieb sowie Verfahren der Spindel zum einen über den formschlüssigen Eingriff zwischen Griff und Spindel, zum anderen aber auch über den formschlüssigen Eingriff zwischen Justierring und Spindel von der Hand des anwendenden Monteurs auf die Spindel übertragen wird. Somit ist es möglich, sowohl den Griff als auch den Justierring aus einem Kunststoffmaterial herzustellen, ohne dass hier auch nach jahrelanger und intensiver Nutzung der Verstellmechanik eine Ermüdung des Werkstoffes zu verzeichnen ist.The adjusting ring is therefore preferably coupled positively and non-rotatably with the spindle. In axial displacement of the handle and the adjusting ring is axially displaced, wherein the invention provides that the adjusting ring is then still in positive engagement with the spindle when the handle is no longer in positive engagement with the spindle. A rotation of the adjusting ring then leads to a process of the spindle and thus to a clamping movement of the spring, wherein this is done independently of the handle. For this purpose, the spindle has an external toothing in particular in the region of the adjusting ring and the adjusting ring itself has a corresponding internal toothing, wherein the adjusting ring and the spindle are axially displaceable, but nevertheless non-rotatable in the Are engaged. In particular, the teeth are an external hexagon and a corresponding hexagon socket. The positive engagement of the Justierrings in the normal position of use and the optional positive coupling of Justierring and handle in the context of the invention again has the advantage that in the normal use position resulting from the rotation of the handle force to drive and process the spindle for a over the positive engagement between the handle and spindle, on the other hand, but also on the positive engagement between the adjusting ring and spindle is transferred from the hand of the applying mechanic to the spindle. Thus, it is possible to produce both the handle and the adjusting ring of a plastic material without fatigue of the material is recorded here even after years and intensive use of the adjustment.
Damit die Spindel gegenüber dem Schaft verfahrbar ist, ist in dem Schaftende eine Spindelmutter vorgesehen, die fest und formschlüssig mit dem Schaftende gekoppelt ist. Ein Drehen der Spindel in der Spindelmutter führt somit zur einem relativen Verfahren der Spindel gegenüber dem Schaft in axialer Richtung, wobei in dem Schaft selbst dann wiederum eine Feder vorgesehen ist, die aufgrund der Verfahrbewegung der Spindel gespannt oder entspannt wird.Thus, the spindle is movable relative to the shaft, a spindle nut is provided in the shaft end, which is fixedly and positively coupled to the shaft end. A rotation of the spindle in the spindle nut thus leads to a relative movement of the spindle relative to the shaft in the axial direction, wherein in the shaft itself, in turn, a spring is provided which is stretched or relaxed due to the movement of the spindle.
Damit ferner eine formschlüssige Koppelung zwischen Justierring und Griff ermöglicht wird, weist bevorzugt der Justierring in Axialrichtung orientierte zahnartige Fortsätze auf, die in korrespondierende Vertiefungen des Griffes zum Eingriff bringbar sind. In der normalen Gebrauchsposition, mithin wenn sich der Griff und/oder der Justierring nicht in der Position zur Vorjustierung befinden, sind somit Justierring und Griff in formschlüssigen Eingriff. Wird nunmehr der Griff, aber auch der Justierring in die Vorjustierposition gebracht, wird auch die formschlüssige Verbindung zwischen Griff und Justierring gelöst. Dies ermöglicht insbesondere das unabhängige Einstellen von Position der Spindel sowie Position des Griffes mit dazu korrespondierender Anzeige des eingestellten Drehmoments.So that further a positive coupling between the adjusting ring and the handle is made possible, the adjusting ring preferably has tooth-like extensions oriented in the axial direction, which can be brought into corresponding recesses of the handle for engagement. In the normal use position, therefore, if the handle and / or the adjusting ring are not in the position for pre-adjustment, thus adjusting ring and handle are in positive engagement. If now the handle, but also the adjusting ring brought into the Vorjustierposition, and the positive connection between the handle and adjusting ring is released. This allows in particular the independent adjustment of the position of the spindle and the position of the handle with corresponding display of the set torque.
Weiterhin besonders bevorzugt weist der Justierring im Rahmen der Erfindung an seinem freien Ende mindestens eine Vertiefung auf, wobei in die Vertiefung ein um die Längsachse der Spindel rotierendes Justierwerkzeug koppelbar ist. Hierbei handelt es sich insbesondere um ein maschinelles Justierwerkzeug, so dass in einer zumindest teilautomatisierten Fertigung des Drehmomentschlüssels das Justierwerkzeug an dem Justierring koppelbar ist und durch Rotation ein Verfahren in Axialrichtung der Spindel durchgeführt wird.Further particularly preferably, the adjusting ring in the invention at its free end at least one recess, wherein in the recess a rotating about the longitudinal axis of the spindle adjusting tool can be coupled. in this connection In particular, it is a mechanical adjustment tool, so that in an at least partially automated production of the torque wrench, the adjustment tool can be coupled to the alignment ring and a process in the axial direction of the spindle is performed by rotation.
Ist dann eine Vorjustierung durchgeführt worden, ist es im Rahmen der Erfindung weiterhin vorgesehen, dass der Justierring und/oder der Griff in Axialrichtung zu dem Schaft hin geschoben werden und durch eine Sicherungsmutter an der Spindel gekoppelt werden. Ferner wird dann besonders bevorzugt in den Justierring selbst eine Verschlusskappe eingegliedert, die zum einen das Eindringen von Schmutz verhindert. Weiterhin ist es möglich, durch Entfernen der Verschlusskappe gegenüber dem Justierring und Lösen der Sicherungsmutter eine Nachjustierung vorzunehmen.If then a pre-adjustment has been carried out, it is further provided in the invention that the adjusting ring and / or the handle are pushed in the axial direction to the shaft and coupled by a lock nut on the spindle. Furthermore, a closure cap is then particularly preferably incorporated into the adjusting ring itself, which on the one hand prevents the ingress of dirt. Furthermore, it is possible to make a readjustment by removing the cap relative to the adjusting ring and loosening the lock nut.
Im Rahmen der Erfindung ist der Justierring selber somit von außen zugänglich. Es ist nicht notwendig, die Drehmomentschlüssel größtenteils oder aber vollständig zu zerlegen, um eine Justierung im Rahmen der Erfindung vorzunehmen, was insbesondere bei einem Nachjustiervorgang von Vorteil ist. Der Justierring selber ist weiterhin besonders bevorzugt derart ausgebildet, dass er von Hand zu erreichen und auch durch Handeingriff verstellbar ist. Somit ist zwangsläufig kein spezielles Justagewerkzeug oder aber ein motorischer Antrieb eines Justagewerkzeugs notwendig, um insbesondere eine Nachjustierung des Drehmomentschlüssels vorzunehmen. Besonders bevorzugt weist der Justierring daher an seinem freien Ende eine Griffmöglichkeit auf, beispielsweise nach dem Prinzip einer Flügelmutter. Optional ergänzend oder aber alternativ dazu besitzt der Justierring weiterhin eine derartige Aufnahmemöglichkeit für ein Justierwerkzeug, insbesondere ein motorisch angetriebenes Justierwerkzeug, so dass der Drehmomentschlüssel hierüber zumindest teilmechanisiert oder aber automatisch justiert werden kann.In the context of the invention, the adjusting ring itself is thus accessible from the outside. It is not necessary to disassemble the torque wrenches largely or completely to make an adjustment in the context of the invention, which is particularly advantageous in a Nachjustiervorgang. The adjusting ring itself is furthermore particularly preferably designed such that it can be reached by hand and can also be adjusted by manual intervention. Thus, inevitably no special adjustment tool or a motor drive an adjustment tool is necessary to make in particular a readjustment of the torque wrench. Particularly preferably, the adjusting ring therefore at its free end on a grip option, for example, according to the principle of a wing nut. Optionally additionally or alternatively, the adjusting ring further has such a receptacle for an adjusting tool, in particular a motor-driven adjusting tool, so that the torque wrench over this at least partially mechanized or can be automatically adjusted.
Weiterhin bevorzugt ist an dem Griff und/oder dem Justierring selbst eine Aufhängeöse einstückig und werkstoffeinheitlich ausgebildet, mit der es möglich ist, den Drehmomentschlüssel an einer Werkzeugwand oder ähnlichem bei Nichtgebrauch aufzuhängen. Durch den festen, formschlüssigen Verbund von sowohl Griff als auch Justierring mit dem Schaft und mithin dem Drehmomentschlüssel kann der gesamte Drehmomentschlüssel bei Nichtgebrauch aufgehangen werden.Further preferably, a suspension loop is integrally formed on the handle and / or the adjusting ring and uniform material, with which it is possible to hang the torque wrench on a tool wall or the like when not in use. Due to the solid, positive connection of both handle as well as adjusting ring with the shaft and thus the torque wrench, the entire torque wrench can be hung when not in use.
Ferner ist es im Rahmen der Erfindung möglich, durch die Aufhängeöse eine Handschlaufe oder Sicherungsleine zu führen, so dass hier beispielsweise ein Fallschutz gegeben ist, so dass der anwendende Monteur, welcher versehentlich den Drehmomentschlüssel aus der Hand gleiten lässt, verhindert, dass dieser auf den Boden aufschlägt. Darüber hinaus kann in einer industriellen Fertigung der Drehmomentschlüssel beispielsweise an einem Drahtseil mit Rückholfeder aufgehangen sein, so dass er für einen anwendenden Monteur leicht erreichbar ist und auch wiederum leicht aus dem Arbeitsfeld herausbewegt werden kann.Furthermore, it is possible within the scope of the invention to guide through the suspension loop a wrist strap or safety line, so that here, for example, a fall protection is given, so that the user fitter who accidentally slip the torque wrench from his hand, prevents this on the Floor hits. In addition, in an industrial manufacturing of the torque wrench may be hung, for example, on a wire rope with return spring, so that it is easily accessible to a user fitter and in turn can be easily moved out of the field.
Weitere Vorteile, Merkmale, Eigenschaften und Aspekte der vorliegenden Erfindung sind Gegenstand der nachfolgenden Beschreibung. Bevorzugte Ausführungsvarianten werden in den schematischen Figuren dargestellt. Diese dienen dem einfachen Verständnis der Erfindung. Es zeigen:
Figur 1- einen erfindungsgemäßen Drehmomentschlüssel in einer teilweisen Draufsicht,
- Figur 2a und b
- den Drehmomentschlüssel in einer Längsschnittansicht in Gebrauchsposition und in Vorjustierposition und
- Figur 3a und b
- den Griff mit Justierring und Spindel in Explosivdarstellung.
- FIG. 1
- a torque wrench according to the invention in a partial plan view,
- FIGS. 2a and b
- the torque wrench in a longitudinal sectional view in the use position and in Vorjustierposition and
- FIG. 3a and b
- the handle with adjusting ring and spindle in explosive representation.
In den Figuren werden für gleiche oder ähnliche Bauteile dieselben Bezugszeichen verwendet, auch wenn eine wiederholte Beschreibung aus Vereinfachungsgründen entfällt.In the figures, the same reference numerals are used for the same or similar components, even if a repeated description is omitted for reasons of simplicity.
Die Funktionsweise wird in
Innerhalb der Spindelmutter 10 selber ist eine in Axialrichtung A durch Drehbewegung verlagerbare Spindel 12 gelagert. Die Spindel 12 selbst ist formschlüssig und drehfest mit dem Griff 3 über einen an der Spindel 12 vorgesehenen Außensechskant 13 sowie einen korrespondierenden Innensechskant 14 im Griff 3 miteinander gekoppelt. Damit diese formschlüssige und drehfeste Koppelung zwischen Außensechskant 13 und Innensechskant 14 gehalten wird, ist am Spindelende 15 eine Sicherungsmutter 16 vorgesehen, die ein axiales Verschieben des Griffes 3 gegenüber der Spindel 12 verhindert.Within the
In einer alternativen Ausführungsvariante erfolgt über den Außensechskant 13 keine unmittelbare drehfeste Koppelung zwischen Spindel 12 und Griff 3. Der Außensechskant 13 ist hierbei dann alternativ als Mutter axial verschieblich auf der Spindel 12 ausgebildet. Es ist somit möglich, eine mittelbare Kopplung zwischen Griff 3 und Spindel 12 über den Justierring 7, insbesondere über die in
Wird nunmehr der Griff 3 um die Mittellängsachse 4 des Schaftes 2 gedreht, erfährt die Spindel 12 zum einen eine Drehbewegung, zum anderen wird die Spindel 12 in Axialrichtung A verfahren. Ein Spindelkopf 17 spannt dann eine nicht näher dargestellte Feder und stellt darüber ein gewünschtes Auslösedrehmoment ein.Now, if the
Um nunmehr eine Vorjustierung bzw. Feinjustierung vorzunehmen, ist es im Rahmen der Erfindung vorgesehen, dass die formschlüssige Koppelung zwischen Griff 3 und Spindel 12 lösbar ist, die Spindel 12 vorjustierbar bzw. feinjustierbar ist und anschließend die Koppelung zwischen Griff 3 und Spindel 12 wieder festlegbar ist.To make a pre-adjustment or fine adjustment, it is provided in the invention that the positive coupling between the
Der Vorjustiervorgang ist in
Damit nunmehr jedoch ein Zugriff auf die Spindel 12, insbesondere eine Drehbewegung der Spindel 12, durchführbar ist, ist der Justierring 7 mit einer Innenverzahnung 18 formschlüssig und verdrehsicher an eine Außenverzahnung 19 gekoppelt. Durch eine Drehbewegung des Justierrings 7 ist es somit möglich, eine Drehbewegung der Spindel 12 hervorzurufen, unabhängig von der Griffstellung. Ein eventueller formschlüssiger Eingriff zwischen Justierring 7 und Griff 3 ist an dieser Stelle zu vernachlässigen. Sollte hier jedoch eine formschlüssige Verzahnung von Justierring 7 und Griff 3 vorgesehen sein, wäre es weiterhin möglich, den Justierring 7, in
Ist diese Einstellung des Auslösedrehmoments vorgenommen, wird der Griff 3 auf die gewünschte Position der in
Ferner ist in
Ferner dargestellt ist in
- 1 - Drehmomentschlüssel1 - Torque wrench
- 2 - Schaft2 - shaft
- 3 - Griff3 - handle
- 4 - Mittellängsachse zu 24 - Center longitudinal axis to 2
- 5 - Anzeige5 - Display
- 6 - Griffende6 - end of grip
- 7 - Justierring7 - adjusting ring
- 8 - Rastmechanik8 - locking mechanism
- 9 - Schaftende9 - shaft end
- 10 - Spindelmutter10 - spindle nut
- 11 - Madenschraube/Zylinderstift11 - Grub screw / cylindrical pin
- 12 - Spindel12 - spindle
- 13 - Mutter oder Anschlag13 - nut or stop
- 14 - Innen-Doppelsechskant14 - internal double hexagon
- 15 - Spindelende15 - spindle end
- 16 - Sicherungsmutter16 - Locknut
- 17 - Spindelkopf17 - spindle head
- 18 - Innenverzahnung zu 718 - internal toothing to 7
- 19 - Außenverzahnung zu 1219 - external toothing to 12
- 20 - Zähne zu 720 - teeth to 7
- 21 - Vertiefung zu 321 - deepening to 3
- 22 - Vertiefung zu 722 - deepening to 7
- 23 - Aufhängeöse23 - suspension eye
- 24 - Innenverzahnung im Justierring24 - Internal toothing in the adjusting ring
- A - AxialrichtungA - axial direction
Claims (12)
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DE202013100263.1U DE202013100263U1 (en) | 2013-01-21 | 2013-01-21 | Adjustment of a torque wrench |
Publications (3)
Publication Number | Publication Date |
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EP2756924A2 true EP2756924A2 (en) | 2014-07-23 |
EP2756924A3 EP2756924A3 (en) | 2018-04-04 |
EP2756924B1 EP2756924B1 (en) | 2019-04-24 |
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EP (1) | EP2756924B1 (en) |
CN (1) | CN103934788B (en) |
DE (1) | DE202013100263U1 (en) |
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CN110695922A (en) * | 2019-11-11 | 2020-01-17 | 中国民用航空飞行学院 | Hollow positioning pin on precision part dismantles and uses operation frock |
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TWI769831B (en) * | 2021-05-26 | 2022-07-01 | 和嘉興精密股份有限公司 | Torsion structure |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1825959B1 (en) | 2006-02-28 | 2010-01-27 | Hazet-Werk Hermann Zerver GmbH & Co. KG | Torque wrench |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4655104A (en) * | 1986-01-06 | 1987-04-07 | Ryeson Corporation | Adjustable torque wrench |
US5497682A (en) * | 1995-07-10 | 1996-03-12 | Hsu; Frank | Torsion wrench |
CN2538495Y (en) * | 2002-01-08 | 2003-03-05 | 谢智庆 | Torque force wrench |
DE202006006350U1 (en) * | 2006-04-19 | 2006-08-31 | Lee, Chang Chuan, Caotun | Torque spanner with positioning facility, for handling nuts and bolts, has torque setting device, hollow handle, and rear cap containing positioning device |
US7836781B1 (en) * | 2009-05-03 | 2010-11-23 | Mikawa Co., Ltd. | Torque-setting device |
EP2248634B1 (en) * | 2009-05-07 | 2013-01-02 | Mikawa Co., Ltd. | Torque-setting device |
US8245606B2 (en) * | 2009-11-16 | 2012-08-21 | William Tools Co., Ltd. | Adjustable torque wrench having lock device |
US8141463B2 (en) * | 2010-01-28 | 2012-03-27 | Jin-Tsai Lai | Hand tool for adjusting torsion |
DE202010002176U1 (en) * | 2010-02-08 | 2010-04-22 | Lai, Jin-Tsai | Hand tool with adjustable torque |
DE202010003273U1 (en) * | 2010-03-05 | 2010-06-02 | Hazet-Werk Hermann Zerver Gmbh & Co. Kg | torque tool |
DE202010011064U1 (en) * | 2010-08-05 | 2010-10-21 | Hazet-Werk Hermann Zerver Gmbh & Co. Kg | Rotatable display of a torque wrench |
DE202011050887U1 (en) * | 2011-08-03 | 2011-09-07 | Hazet-Werk Hermann Zerver Gmbh & Co. Kg | torque tool |
-
2013
- 2013-01-21 DE DE202013100263.1U patent/DE202013100263U1/en not_active Expired - Lifetime
- 2013-12-19 ES ES13198489T patent/ES2730206T3/en active Active
- 2013-12-19 EP EP13198489.0A patent/EP2756924B1/en active Active
-
2014
- 2014-01-20 CN CN201410025982.XA patent/CN103934788B/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1825959B1 (en) | 2006-02-28 | 2010-01-27 | Hazet-Werk Hermann Zerver GmbH & Co. KG | Torque wrench |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110695922A (en) * | 2019-11-11 | 2020-01-17 | 中国民用航空飞行学院 | Hollow positioning pin on precision part dismantles and uses operation frock |
Also Published As
Publication number | Publication date |
---|---|
ES2730206T3 (en) | 2019-11-08 |
CN103934788B (en) | 2017-03-01 |
EP2756924A3 (en) | 2018-04-04 |
DE202013100263U1 (en) | 2014-04-24 |
CN103934788A (en) | 2014-07-23 |
EP2756924B1 (en) | 2019-04-24 |
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