EP3344419A1 - Torque wrench - Google Patents
Torque wrenchInfo
- Publication number
- EP3344419A1 EP3344419A1 EP16766848.2A EP16766848A EP3344419A1 EP 3344419 A1 EP3344419 A1 EP 3344419A1 EP 16766848 A EP16766848 A EP 16766848A EP 3344419 A1 EP3344419 A1 EP 3344419A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ratchet
- side walls
- torque wrench
- fastening
- free space
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
- B25B21/004—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose of the ratchet type
- B25B21/005—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose of the ratchet type driven by a radially acting hydraulic or pneumatic piston
-
- 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
- B25B23/0078—Reaction arms
Definitions
- the invention relates to torque wrenches with a ratchet and a drive for the ratchet, wherein the ratchet has a ratchet housing with two mutually opposite side walls, which have a predetermined distance from each other and are connected to each other, a transversely through the two side walls extending through gear opening, which is adapted to receive a ratchet body, wherein the axis of rotation is parallel to the axis of the through hole, and with fastening means for fixing a support means to the torque wrench with which the torque wrench is perpendicular to the axis of rotation of the ratchet body rotatable supportable.
- a known torque wrench of this type is composed of a ratchet unit having a ratchet housing ratchet and a drive unit having the ratchet drive.
- the drive unit has an extension, which extends in the assembled state of ratchet unit and drive unit in the ratchet housing between the side walls.
- the extension and the side walls each have a bore, which are aligned in the assembled state of ratchet unit and drive unit. These holes are used to attach various support devices to the torque wrench. With these support means of the torque wrench is supported perpendicular to the axis of rotation of the ratchet body when applying a torque, for example on the next screw or on the flange.
- the support devices have two mutually parallel and mutually spaced leg, which are applied on both sides of the torque wrench on the side walls. Each leg has a bore, which are aligned with each other and in the state suitably applied to the torque wrench with its said holes.
- a bolt is guided from one side through the hole in one leg of the support device, then through the holes in the ratchet unit and in the drive unit and finally through the hole in the other leg of the support device and then in its position secured.
- the invention has for its object to improve a generic torque wrench so that the mounting option for a support device is easier to handle and at the same time higher load capacity.
- the fastening means have a free space lying between the side walls, which is accessible from outside the torque the access opening is arranged between the two side walls, and which is designed to receive a fastening portion of the support means, and the fastening means comprise means for fixing the fixing portion in the free space.
- the inventive measures can be attached to a torque wrench with a small footprint and in a very simple way a support device and also released from the torque wrench, while reducing the production cost of the torque wrench and the fasteners for the support at unchanged ab leveragenden supporting forces or moments can be made smaller.
- the fastening means have a space lying between the side walls, which is accessible from outside the torque wrench and designed to receive a mounting portion of the support means, a mounting option is provided for the support means, in which a mounting portion of the support means can be easily and safely inserted.
- the installation space or space requirement of the torque wrench is increased transversely to the side walls by a introduced into the free space mounting portion of the support device neither during their attachment nor during the screwing, so that the support means are used even in tight space conditions can be easily inserted into the torque wrench or the torque wrench can be placed on the support device.
- the attachment of the support device is carried out exclusively on the ratchet housing, d. H. without involvement of the drive unit. In the manufacture of the torque wrench, therefore, there are no tolerances influences or imprecision in terms of elements mounted on the drive unit for fastening the support device.
- the attachment means also have means for securing the attachment portion of the support means in the clearance, i. H.
- the attachment takes place in the free space, so that, for example, a fastening bolt extending transversely to the side walls only has to extend between the outer walls of the side walls and its shear surfaces are located close to the inner walls of the side walls. Due to the reduced length of the fastening bolt and the reduced distance between its shear surfaces, the bending stress of the fastening bolt is reduced, thus increasing its capacity for absorbing shear forces.
- the outer peripheral edges of the two opposite side walls are connected to each other by means of an edge wall and the access opening to the free space is arranged in this edge wall.
- a guide for the attachment portion of the support device is created.
- the access opening is in this case of opposite sections of the side walls or parallel to the side walls and walls in the circumferential direction of the peripheral wall opposite portions of Edge wall formed or limited. These boundary sections of the access opening simultaneously form a guide for the fastening section, by means of which the fastening section is guided into the free space.
- the free space in a plane perpendicular to the axis of the through hole has a triangular cross section, which tapers into the ratchet housing.
- the attachment portion of the support device can be even more easily guided into the space.
- the clearance may also have any other cross-sectional shape suitable for inserting and fixing the attachment portion of the support. So z. B. other embodiments of the taper of the cross section possible, for example, a step-shaped taper. It is also conceivable that the cross section is not tapered, but is rectangular.
- the torque wrench has a bore running transversely through the two side walls and the free space, which hole is designed to receive a bolt for fastening the fastening section of the support device. A secure and fast and also cost-effective attachment of the mounting portion in the free space is ensured in this way.
- the attachment portion of the support device has a bore which is also designed to receive the bolt and which is aligned with the holes in the side walls of the ratchet housing when either the attachment portion rests in the free space on the walls or the support means on the edge wall ratchet housing is applied.
- a torque wrench according to the invention may be constituted by a ratchet unit comprising the ratchet-housing ratchet and a drive unit having the ratchet drive, the ratchet unit and the drive unit being detachably assembled into a screwdriver unit.
- Figure 1 is a perspective view of an embodiment of an inventive
- Torque wrench wherein also a supporting device to be fastened thereto and a bolt are shown for their attachment;
- Figure 2 is a perspective view of the embodiment of Figure 1, with the support means secured to the torque wrench by means of the bolt;
- Figure 3 is a side view of the embodiment of Figure 2;
- Figure 4 is a rear view of the embodiment of Figure 2;
- Figure 5 is a side view of the embodiment of Figure 1, with a partial section in the region of the fastening means for a support device;
- Figure 6 is a bottom view of the embodiment of Figure 1 and
- Figure 7 is a perspective view of the embodiment of Figure 1, with several embodiments of a support device.
- FIG. 1 to 7 embodiment of a torque screwdriver 1 comprises a hydraulic drive unit 2 and a ratchet unit 3, which are detachably assembled to a screw unit and are releasably rigidly connected together in the assembled state.
- the torque wrench 1 can also be made in one piece, d. H. the ratchet 3 and the drive 2 for the ratchet 3 are non-detachably connected to each other.
- the ratchet has a ratchet housing 4 with two opposite side walls 5, which extend parallel to each other at a predetermined distance and are interconnected. Transversely through the two side walls 5 passes through a passage opening 6, in which a ratchet rotating body 7 is received, whose axis of rotation 8 is parallel to the axis 9 of the passage opening 6.
- the ratchet body 7 in turn has in the illustrated embodiment, a hexagonal passage opening 10 for receiving, for example, a hex nut.
- the outer peripheral edges 1 1 of the side walls 5 are connected to each other by means of an edge wall 12.
- the ratchet housing 4 has a cantilever 13, which extends away from the ratchet body 7 and on its one side 14 a seat 15 for the hydraulic drive unit 2 is formed.
- a clearance 17 which is accessible from outside the torque wrench 1 through an access opening 18 in the peripheral wall 12 on the seat 15 for the hydraulic drive unit 2 facing away from side 19 of the cantilever 13 is arranged.
- the free space 17 has a cross-section parallel to the side walls 5-d. H. in a plane perpendicular to the axis 8, 9 of the passage opening 6 or the ratchet rotating body 7 - the shape of a triangle, which tapers into the ratchet housing 4 inside.
- the size of the triangular angle 20 of the free space 17 opening towards the access opening 18 is adapted to the requirements of the particular application.
- the tip 21 of the triangular angle 20 opening towards the access opening 18 is rounded.
- a through-bore 22 which passes through the two side walls 5 of the ratchet housing 4 and the free space 17 and is designed to receive a bolt 23 for fastening a fastening section 24 of the support device 16. Due to the triangular shape of the clearance 17, the attachment portion 24 of the support 16 can be easily inserted into the clearance 17.
- the position of the holes 22a in the side walls 5 of the ratchet housing 4, ie the edge distances of these holes 22a to the edge 25 of the free space 17, and the position of the bore 22b in the mounting portion 24 of the support 16, ie the edge distances of this bore 22b to the edge 26 of the mounting portion 24, are coordinated so that the bore 22b in the mounting portion 24 is aligned with the holes 22a in the side walls 5 of the ratchet housing 4 when the mounting portion 24 is inserted as far as possible in the free space 17, ie either the mounting portion 24 in the free space 17th on the walls 27 rests or the support means 16 rests against the edge wall 12 of the ratchet housing 4.
- the bolt 23 is first through the bore 22a in a side wall 5 therethrough, then through the bore 22b in the mounting portion 24 - and thus through the space 17 therethrough - and finally through the bore 22a in the second side wall 5 of Ratchet housing 4 guided therethrough.
- the bolt 23 has a bolt shank 28 and a bolt head 29 whose diameter is slightly larger than that of the bolt shank 28. At least the bore 22a in one of the side walls 5 has a step 30 at which the bolt head 29th comes in the inserted state to the plant. In the inserted state of the bolt 23, its end faces 31, 32 on the bolt head 29 and on the bolt end are flush with the outer walls 5a of the side walls 5 of the ratchet housing 4.
- the position of the bolt 23 is effected by a spring-loaded ball 33 ( Figure 1), which pushes in the inserted state of the pin 23 in a (not shown) recess in the bore wall of the mounting portion 24 of the support means 16.
- a wear plate 34 is shown as a supporting device 16 to be fastened with a mounting portion 24 which extends transversely to the plane of the plate.
- FIGS. 2 to 4 show the torque wrench 1 from FIG. 1 with the wear plate 34 now fastened.
- its attachment section 24 extends through the access opening 18 in the peripheral wall 12 of the torque wrench 1 (FIGS. 1 and 6) into the free space 17.
- the bolt 23 then extends - as described above - through the holes 22a in the side walls 5 of the torque wrench 1 and through the bore 22b in the mounting portion 24 of the wear plate 34, wherein the spring-biased position securing ball 33 in the recess in the bore 22b of Attached portion 24 is engaged.
- the wear plate 34 In its state fastened to the torque wrench 1, the wear plate 34 bears against the side 19 or peripheral wall 12 of the cantilever 13 facing away from the drive unit 2.
- support means 16 such as a support means 35 with extension for the pressure transmission or a ring support means 36 or a support means 37 with extension arm.
- the support arm 37 with extension arm has no attachment portion which is inserted into the free space 17 of the torque wrench 1, but two opposing, outer mounting portions 38, the outside of the side walls 5 of the Torque wrench 1 are created.
- the bolt 23 is then first through the bore 22b in the one attachment portion 38, then through the bore 22a in the adjacent side wall 5, then through the clearance 17 and finally through the bore 22a in the other side wall 5 and through the bore 22b in the other attachment portion 38 out.
- the two side walls 5 of the ratchet housing 4 and the torque screwdriver 1 through holes 22a are exclusively loaded by the bolt 23 for fixing the support means 16 and therefore the holes 22a and the bolt 23 can be optimally arranged and dimensioned.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
Description
Drehmomentschrauber torque wrench
Die Erfindung bezieht sich auf Drehmomentschrauber mit einer Ratsche und einem Antrieb für die Ratsche, wobei die Ratsche ein Ratschengehäuse aufweist mit zwei einander gegenüber liegenden Seitenwänden, die einen vorgegebenen Abstand zueinander aufweisen und miteinander verbunden sind, einer quer durch die beiden Seitenwände hindurch verlaufenden Durch- gangsöffnung, die zur Aufnahme eines Ratschendrehkörpers ausgelegt ist, wobei dessen Drehachse parallel zur Achse der Durchgangsöffnung verläuft, und mit Befestigungsmitteln zum Befestigen einer Abstützeinrichtung an dem Drehmomentschrauber, mit der der Drehmomentschrauber senkrecht zur Drehachse des Ratschendrehkörpers abstützbar ist. The invention relates to torque wrenches with a ratchet and a drive for the ratchet, wherein the ratchet has a ratchet housing with two mutually opposite side walls, which have a predetermined distance from each other and are connected to each other, a transversely through the two side walls extending through gear opening, which is adapted to receive a ratchet body, wherein the axis of rotation is parallel to the axis of the through hole, and with fastening means for fixing a support means to the torque wrench with which the torque wrench is perpendicular to the axis of rotation of the ratchet body rotatable supportable.
Ein bekannter Drehmomentschrauber dieser Art ist aus einer Ratscheneinheit, die eine Ratsche mit Ratschengehäuse aufweist, und einer Antriebseinheit zusammensetzbar, die den Antrieb für die Ratsche aufweist. Die Antriebseinheit weist einen Fortsatz auf, der sich im zusammengesetzten Zustand von Ratscheneinheit und Antriebseinheit in das Ratschengehäuse hinein zwischen dessen Seitenwände erstreckt. Der Fortsatz und die Seitenwände weisen jeweils eine Bohrung auf, die im zusammengesetzten Zustand von Ratscheneinheit und Antriebseinheit miteinander fluchten. Diese Bohrungen dienen zum Befestigen diverser Abstützeinrichtungen an dem Drehmomentschrauber. Mit diesen Abstützeinrichtungen wird der Drehmomentschrauber senkrecht zur Drehachse des Ratschendrehkörpers beim Aufbringen eines Drehmoments abgestützt, beispielsweise an der nächsten Schraube oder am Flansch. A known torque wrench of this type is composed of a ratchet unit having a ratchet housing ratchet and a drive unit having the ratchet drive. The drive unit has an extension, which extends in the assembled state of ratchet unit and drive unit in the ratchet housing between the side walls. The extension and the side walls each have a bore, which are aligned in the assembled state of ratchet unit and drive unit. These holes are used to attach various support devices to the torque wrench. With these support means of the torque wrench is supported perpendicular to the axis of rotation of the ratchet body when applying a torque, for example on the next screw or on the flange.
Die Abstützeinrichtungen weisen zwei zueinander parallele und zueinander mit Abstand angeordnete Schenkel auf, die beidseits des Drehmomentschraubers an dessen Seitenwände angelegt werden. Jeder Schenkel weist eine Bohrung auf, die miteinander und im an den Drehmomentschrauber passend angelegten Zustand auch mit dessen besagten Bohrungen fluchten. Zur Befestigung einer Abstützeinrichtung an dem Drehmomentschrauber wird dann ein Bolzen von einer Seite durch die Bohrung in einem Schenkel der Abstützeinrichtung, dann durch die Bohrungen in der Ratscheneinheit und in der Antriebseinheit und schließlich durch die Bohrung im anderen Schenkel der Abstützeinrichtung geführt und dann in seiner Lage gesichert. The support devices have two mutually parallel and mutually spaced leg, which are applied on both sides of the torque wrench on the side walls. Each leg has a bore, which are aligned with each other and in the state suitably applied to the torque wrench with its said holes. To attach a support device to the torque wrench then a bolt is guided from one side through the hole in one leg of the support device, then through the holes in the ratchet unit and in the drive unit and finally through the hole in the other leg of the support device and then in its position secured.
Der Erfindung liegt die Aufgabe zugrunde, einen gattungsgemäßen Drehmomentschrauber so zu verbessern, dass die Befestigungsmöglichkeit für eine Abstützeinrichtung einfacher handhabbar und gleichzeitig höher belastbar ist. The invention has for its object to improve a generic torque wrench so that the mounting option for a support device is easier to handle and at the same time higher load capacity.
Erfindungsgemäß wird diese Aufgabe dadurch gelöst, dass die Befestigungsmittel einen zwischen den Seitenwänden liegenden Freiraum aufweisen, der von außerhalb des Drehmoment- schraubers zugänglich ist, wobei die Zugangsöffnung zwischen den beiden Seitenwänden angeordnet ist, und der zur Aufnahme eines Befestigungsabschnitts der Abstützeinrichtung ausgelegt ist, und die Befestigungsmittel Einrichtungen zum Befestigen des Befestigungsabschnitts in dem Freiraum aufweisen. According to the invention, this object is achieved in that the fastening means have a free space lying between the side walls, which is accessible from outside the torque the access opening is arranged between the two side walls, and which is designed to receive a fastening portion of the support means, and the fastening means comprise means for fixing the fixing portion in the free space.
Durch die erfindungsgemäßen Maßnahmen kann mit geringem Platzbedarf und auf sehr einfache Weise eine Abstützeinrichtung an einem Drehmomentschrauber befestigt und von dem Drehmomentschrauber auch wieder gelöst werden, wobei gleichzeitig der Fertigungsaufwand für den Drehmomentschrauber reduziert und die Befestigungsmittel für die Abstützeinrichtung bei unverändert bleibenden aufzubringenden Abstützkräften bzw. -momenten kleiner dimensioniert werden können. Dadurch, dass die Befestigungsmittel einen zwischen den Seitenwänden liegenden Freiraum aufweisen, der von außerhalb des Drehmomentschraubers zugänglich und zur Aufnahme eines Befestigungsabschnitts der Abstützeinrichtung ausgelegt ist, wird für die Abstützeinrichtung eine Befestigungsmöglichkeit geschaffen, in die ein Befestigungsabschnitt der Abstützeinrichtung leicht und sicher eingeführt werden kann. Da die Zugangsöffnung zwischen den beiden Seitenwänden angeordnet ist, wird der Bauraum bzw. Platzbedarf des Drehmomentschraubers quer zu dessen Seitenwänden durch einen in den Freiraum eingeführten Befestigungsabschnitt der Abstützeinrichtung weder bei deren Anbringen noch beim Schraubvorgang vergrößert, sodass die Abstützeinrichtung auch bei engen räumlichen Verhältnissen verwendet werden kann und problemlos in den Drehmomentschrauber eingesetzt bzw. der Drehmomentschrauber auf die Abstützeinrichtung aufgesetzt werden kann. Erfindungsgemäß erfolgt die Befestigung der Abstützeinrichtung ausschließlich am Ratschengehäuse, d. h. ohne Einbeziehung der Antriebseinheit. Bei der Fertigung des Drehmomentschraubers sind daher keine Toleranzeinflüsse bzw. Pa- ßungenauigkeiten aus an der Antriebseinheit angebrachten Elementen zur Befestigung der Abstützeinrichtung vorhanden. Die Befestigungsmittel weisen auch Einrichtungen zum Befestigen des Befestigungsabschnitts der Abstützeinrichtung in dem Freiraum auf, d. h. die Befestigung erfolgt in dem Freiraum, sodass beispielsweise ein quer zu den Seitenwänden verlaufender Befestigungsbolzen sich nur zwischen den Außenwandungen der Seitenwände erstrecken muss und seine Scherflächen sich nahe den Innenwandungen der Seitenwände befinden. Auf Grund der reduzierten Länge des Befestigungsbolzens und des reduzierten Abstands zwischen seinen Scherflächen ist die Biegebeanspruchung des Befestigungsbolzen verringert und damit dessen Aufnahmefähigkeit für Scherkräfte erhöht. The inventive measures can be attached to a torque wrench with a small footprint and in a very simple way a support device and also released from the torque wrench, while reducing the production cost of the torque wrench and the fasteners for the support at unchanged abstützenden supporting forces or moments can be made smaller. Characterized in that the fastening means have a space lying between the side walls, which is accessible from outside the torque wrench and designed to receive a mounting portion of the support means, a mounting option is provided for the support means, in which a mounting portion of the support means can be easily and safely inserted. Since the access opening is arranged between the two side walls, the installation space or space requirement of the torque wrench is increased transversely to the side walls by a introduced into the free space mounting portion of the support device neither during their attachment nor during the screwing, so that the support means are used even in tight space conditions can be easily inserted into the torque wrench or the torque wrench can be placed on the support device. According to the attachment of the support device is carried out exclusively on the ratchet housing, d. H. without involvement of the drive unit. In the manufacture of the torque wrench, therefore, there are no tolerances influences or imprecision in terms of elements mounted on the drive unit for fastening the support device. The attachment means also have means for securing the attachment portion of the support means in the clearance, i. H. the attachment takes place in the free space, so that, for example, a fastening bolt extending transversely to the side walls only has to extend between the outer walls of the side walls and its shear surfaces are located close to the inner walls of the side walls. Due to the reduced length of the fastening bolt and the reduced distance between its shear surfaces, the bending stress of the fastening bolt is reduced, thus increasing its capacity for absorbing shear forces.
Vorzugsweise sind die Außenumfangsränder der beiden einander gegenüberliegenden Seitenwände mittels einer Randwand miteinander verbunden und ist die Zugangsöffnung zum Freiraum in dieser Randwand angeordnet. Durch diese Maßnahmen wird eine Führung für den Befestigungsabschnitt der Abstützeinrichtung geschaffen. Die Zugangsöffnung wird dabei von einander gegenüberliegenden Abschnitten der Seitenwände oder von zu den Seitenwänden parallelen Wänden und einander in Umlaufrichtung der Randwand gegenüberliegenden Abschnitten der Randwand gebildet bzw. begrenzt. Diese Begrenzungsabschnitte der Zugangsöffnung bilden gleichzeitig eine Führung für den Befestigungsabschnitt, mittels der der Befestigungsabschnitt in den Freiraum hineingeführt wird. Preferably, the outer peripheral edges of the two opposite side walls are connected to each other by means of an edge wall and the access opening to the free space is arranged in this edge wall. By these measures, a guide for the attachment portion of the support device is created. The access opening is in this case of opposite sections of the side walls or parallel to the side walls and walls in the circumferential direction of the peripheral wall opposite portions of Edge wall formed or limited. These boundary sections of the access opening simultaneously form a guide for the fastening section, by means of which the fastening section is guided into the free space.
Vorteilhafterweise weist der Freiraum in einer Ebene senkrecht zur Achse der Durchgangsöffnung einen dreieckförmigen Querschnitt auf, der sich in das Ratschengehäuse hinein verjüngt. Hierdurch kann der Befestigungsabschnitt der Abstützeinrichtung noch leichter in den Freiraum hineingeführt werden. Der Freiraum kann jedoch auch jede andere Querschnittsform aufweisen, die zum Hineinführen und Befestigen des Befestigungsabschnitts der Abstützeinrichtung geeignet ist. So sind z. B. andere Ausgestaltungen der Verjüngung des Querschnitts möglich, beispielsweise eine stufenförmige Verjüngung. Denkbar ist auch, dass der Querschnitt sich nicht verjüngt, sondern rechteckig ausgebildet ist. Advantageously, the free space in a plane perpendicular to the axis of the through hole has a triangular cross section, which tapers into the ratchet housing. In this way, the attachment portion of the support device can be even more easily guided into the space. However, the clearance may also have any other cross-sectional shape suitable for inserting and fixing the attachment portion of the support. So z. B. other embodiments of the taper of the cross section possible, for example, a step-shaped taper. It is also conceivable that the cross section is not tapered, but is rectangular.
In günstiger Weiterbildung der Erfindung weist der Drehmomentschrauber eine quer durch die beiden Seitenwände und den Freiraum verlaufende Bohrung auf, die zur Aufnahme eines Bolzens zum Befestigen des Befestigungsabschnitts der Abstützeinrichtung ausgelegt ist. Eine sichere und schnelle und zudem kostengünstige Befestigung des Befestigungsabschnitts in dem Freiraum ist auf diese Weise gewährleistet. In a favorable development of the invention, the torque wrench has a bore running transversely through the two side walls and the free space, which hole is designed to receive a bolt for fastening the fastening section of the support device. A secure and fast and also cost-effective attachment of the mounting portion in the free space is ensured in this way.
In vorteilhafter Ausgestaltung der Erfindung weist der Befestigungsabschnitt der Abstützeinrichtung eine Bohrung auf, die ebenfalls zur Aufnahme des Bolzens ausgelegt ist und die mit den Bohrungen in den Seitenwänden des Ratschengehäuses fluchtet, wenn entweder der Befestigungsabschnitt im Freiraum an dessen Wänden anliegt oder die Abstützeinrichtung an der Randwand des Ratschengehäuses anliegt. Mit diesen Maßnahmen wird erreicht, dass die Bohrungen in den Seitenwänden des Ratschengehäuses und im Befestigungsabschnitt der Abstützeinrichtung ohne weiteres Ausrichten miteinander fluchten, wenn der Befestigungsabschnitt so weit wie möglich in den Freiraum eingeführt ist. In an advantageous embodiment of the invention, the attachment portion of the support device has a bore which is also designed to receive the bolt and which is aligned with the holes in the side walls of the ratchet housing when either the attachment portion rests in the free space on the walls or the support means on the edge wall ratchet housing is applied. With these measures it is achieved that the holes in the side walls of the ratchet housing and in the mounting portion of the support device are aligned without further alignment when the mounting portion is inserted as far as possible in the free space.
Ein erfindungsgemäßer Drehmomentschrauber kann aus einer Ratscheneinheit, die die Ratsche mit Ratschengehäuse aufweist, und einer Antriebseinheit gebildet sein, die den Antrieb für die Ratsche aufweist, wobei die Ratscheneinheit und die Antriebseinheit lösbar zu einer Schraubereinheit zusammensetzbar sind. Mit diesen Maßnahmen ist es möglich, je nach Anwendungsfall das Ratschengehäuse auszutauschen und auf diese Weise die Schlüsselweiten anzupassen. Auf diese Weise muss nicht für jedes Ratschengehäuse eine eigene Antriebseinheit vorhanden sein. Der Drehmomentschrauber kann jedoch auch einteilig ausgeführt werden, d. h. Antrieb und Ratsche sind dann nicht voneinander trennbar, falls dies für Anwendungsfälle vorteilhaft oder erforderlich ist. Die Erfindung wird anhand der nachfolgenden Zeichnungen beispielshalber näher erläutert. Es zeigen: A torque wrench according to the invention may be constituted by a ratchet unit comprising the ratchet-housing ratchet and a drive unit having the ratchet drive, the ratchet unit and the drive unit being detachably assembled into a screwdriver unit. With these measures, it is possible, depending on the application to replace the ratchet housing and adjust in this way the wrench sizes. In this way, there is no need for a separate drive unit for each ratchet housing. However, the torque wrench can also be made in one piece, ie drive and ratchet are then not separable, if this is advantageous or necessary for applications. The invention will be explained by way of example with reference to the following drawings. Show it:
Figur 1 eine perspektivische Ansicht einer Ausführungsform eines erfindungsgemäßen Figure 1 is a perspective view of an embodiment of an inventive
Drehmomentschraubers, wobei auch eine daran zu befestigende Abstützeinrichtung und ein Bolzen zu deren Befestigung dargestellt sind; Torque wrench, wherein also a supporting device to be fastened thereto and a bolt are shown for their attachment;
Figur 2 eine perspektivische Ansicht der Ausführungsform aus Figur 1 , wobei die Abstützeinrichtung mittels des Bolzens an dem Drehmomentschrauber befestigt ist; Figure 2 is a perspective view of the embodiment of Figure 1, with the support means secured to the torque wrench by means of the bolt;
Figur 3 eine Seitenansicht der Ausführungsform aus Figur 2; Figure 3 is a side view of the embodiment of Figure 2;
Figur 4 eine Rückansicht der Ausführungsform aus Figur 2; Figure 4 is a rear view of the embodiment of Figure 2;
Figur 5 eine Seitenansicht der Ausführungsform aus Figur 1 , mit einem Teilschnitt im Bereich der Befestigungsmittel für eine Abstützeinrichtung; Figure 5 is a side view of the embodiment of Figure 1, with a partial section in the region of the fastening means for a support device;
Figur 6 eine Unteransicht der Ausführungsform aus Figur 1 und Figure 6 is a bottom view of the embodiment of Figure 1 and
Figur 7 in einer Perspektivansicht die Ausführungsform aus Figur 1 , mit mehreren Ausführungsformen einer Abstützeinrichtung. Figure 7 is a perspective view of the embodiment of Figure 1, with several embodiments of a support device.
Das in den Figuren 1 bis 7 dargestellte Ausführungsbeispiel eines erfindungsgemäßen Drehmomentschraubers 1 weist eine hydraulische Antriebseinheit 2 und eine Ratscheneinheit 3 auf, die lösbar zu einer Schraubereinheit zusammengesetzt sind und im zusammengesetzten Zustand lösbar starr miteinander verbunden sind. The illustrated in Figures 1 to 7 embodiment of a torque screwdriver 1 according to the invention comprises a hydraulic drive unit 2 and a ratchet unit 3, which are detachably assembled to a screw unit and are releasably rigidly connected together in the assembled state.
Alternativ kann der Drehmomentschrauber 1 auch einteilig ausgeführt sein, d. h. die Ratsche 3 und der Antrieb 2 für die Ratsche 3 nichtlösbar miteinander verbunden sein. Alternatively, the torque wrench 1 can also be made in one piece, d. H. the ratchet 3 and the drive 2 for the ratchet 3 are non-detachably connected to each other.
Die Ratsche weist ein Ratschengehäuse 4 mit zwei einander gegenüberliegenden Seitenwänden 5 auf, die in einem vorgegebenen Abstand parallel zueinander verlaufen und miteinander verbunden sind. Quer durch die beiden Seitenwände 5 hindurch verläuft eine Durchgangsöffnung 6, in der ein Ratschendrehkörper 7 aufgenommen ist, dessen Drehachse 8 parallel zur Achse 9 der Durchgangsöffnung 6 verläuft. Der Ratschendrehkörper 7 wiederum hat im dargestellten Ausführungsbeispiel eine sechskantförmige Durchgangsöffnung 10 zur Aufnahme beispielsweise einer Sechskantmutter. Die Außenumfangsränder 1 1 der Seitenwände 5 sind mittels einer Randwand 12 miteinander verbunden. The ratchet has a ratchet housing 4 with two opposite side walls 5, which extend parallel to each other at a predetermined distance and are interconnected. Transversely through the two side walls 5 passes through a passage opening 6, in which a ratchet rotating body 7 is received, whose axis of rotation 8 is parallel to the axis 9 of the passage opening 6. The ratchet body 7 in turn has in the illustrated embodiment, a hexagonal passage opening 10 for receiving, for example, a hex nut. The outer peripheral edges 1 1 of the side walls 5 are connected to each other by means of an edge wall 12.
Das Ratschengehäuse 4 weist einen Kragarm 13 auf, der sich von dem Ratschendrehkörper 7 wegerstreckt und auf seiner einen Seite 14 einen Sitz 15 für die hydraulische Antriebseinheit 2 ausbildet. The ratchet housing 4 has a cantilever 13, which extends away from the ratchet body 7 and on its one side 14 a seat 15 for the hydraulic drive unit 2 is formed.
Zur Befestigung einer Abstützeinrichtung 16 an dem Drehmomentschrauber 1 weist das Ratschengehäuse 4 in dem Kragarm 13 zwischen den Seitenwänden 5 einen Freiraum 17 auf, der von außerhalb des Drehmomentschraubers 1 durch eine Zugangsöffnung 18 zugänglich ist, die in der Randwand 12 auf der dem Sitz 15 für die hydraulische Antriebseinheit 2 abgewandten Seite 19 des Kragarms 13 angeordnet ist. To attach a support means 16 to the torque wrench 1, the ratchet housing 4 in the cantilever 13 between the side walls 5 a clearance 17 which is accessible from outside the torque wrench 1 through an access opening 18 in the peripheral wall 12 on the seat 15 for the hydraulic drive unit 2 facing away from side 19 of the cantilever 13 is arranged.
Wie aus Figur 5 ersichtlich ist, hat in diesem Ausführungsbeispiel der Freiraum 17 in einem Querschnitt parallel zu den Seitenwänden 5 - d. h. in einer Ebene senkrecht zur Achse 8, 9 der Durchgangsöffnung 6 oder des Ratschendrehkörpers 7 - die Form eines Dreiecks, das sich in das Ratschengehäuse 4 hinein verjüngt. Die Größe des zur Zugangsöffnung 18 hin öffnenden Dreieckswinkels 20 des Freiraums 17 ist an die Erfordernisse des jeweiligen Anwendungsfalls angepasst. As can be seen from FIG. 5, in this exemplary embodiment the free space 17 has a cross-section parallel to the side walls 5-d. H. in a plane perpendicular to the axis 8, 9 of the passage opening 6 or the ratchet rotating body 7 - the shape of a triangle, which tapers into the ratchet housing 4 inside. The size of the triangular angle 20 of the free space 17 opening towards the access opening 18 is adapted to the requirements of the particular application.
Die Spitze 21 des zur Zugangsöffnung 18 hin öffnenden Dreieckswinkels 20 ist abgerundet. Im Bereich dieser abgerundeten Dreiecksspitze 21 verläuft eine Durchgangsbohrung 22, die die beiden Seitenwände 5 des Ratschengehäuses 4 und den Freiraum 17 durchläuft und zur Aufnahme eines Bolzens 23 zum Befestigen eines Befestigungsabschnitts 24 der Abstützeinrichtung 16 ausgelegt ist. Aufgrund der Dreiecksform des Freiraums 17 kann der Befestigungsabschnitt 24 der Abstützeinrichtung 16 leicht in den Freiraum 17 eingeführt werden. The tip 21 of the triangular angle 20 opening towards the access opening 18 is rounded. In the region of this rounded triangular tip 21 there extends a through-bore 22, which passes through the two side walls 5 of the ratchet housing 4 and the free space 17 and is designed to receive a bolt 23 for fastening a fastening section 24 of the support device 16. Due to the triangular shape of the clearance 17, the attachment portion 24 of the support 16 can be easily inserted into the clearance 17.
Die Lage der Bohrungen 22a in den Seitenwänden 5 des Ratschengehäuses 4, d. h. die Randabstände dieser Bohrungen 22a zum Rand 25 des Freiraums 17, und die Lage der Bohrung 22b im Befestigungsabschnitt 24 der Abstützeinrichtung 16, d. h. die Randabstände dieser Bohrung 22b zum Rand 26 des Befestigungsabschnitts 24, sind so aufeinander abgestimmt, dass die Bohrung 22b im Befestigungsabschnitt 24 mit den Bohrungen 22a in den Seitenwänden 5 des Ratschengehäuses 4 fluchtet, wenn der Befestigungsabschnitt 24 so weit wie möglich in den Freiraum 17 eingeführt ist, d. h. entweder der Befestigungsabschnitt 24 im Freiraum 17 an dessen Wänden 27 anliegt oder die Abstützeinrichtung 16 an der Randwand 12 des Ratschengehäuses 4 anliegt. Zum Befestigen einer Abstützeinrichtung 16 wird dann der Bolzen 23 zunächst durch die Bohrung 22a in einer Seitenwand 5 hindurch, dann durch die Bohrung 22b im Befestigungsabschnitt 24 - und damit durch den Freiraum 17 hindurch - und schließlich durch die Bohrung 22a in der zweiten Seitenwand 5 des Ratschengehäuses 4 hindurch geführt. The position of the holes 22a in the side walls 5 of the ratchet housing 4, ie the edge distances of these holes 22a to the edge 25 of the free space 17, and the position of the bore 22b in the mounting portion 24 of the support 16, ie the edge distances of this bore 22b to the edge 26 of the mounting portion 24, are coordinated so that the bore 22b in the mounting portion 24 is aligned with the holes 22a in the side walls 5 of the ratchet housing 4 when the mounting portion 24 is inserted as far as possible in the free space 17, ie either the mounting portion 24 in the free space 17th on the walls 27 rests or the support means 16 rests against the edge wall 12 of the ratchet housing 4. To fasten a support means 16 then the bolt 23 is first through the bore 22a in a side wall 5 therethrough, then through the bore 22b in the mounting portion 24 - and thus through the space 17 therethrough - and finally through the bore 22a in the second side wall 5 of Ratchet housing 4 guided therethrough.
In Figur 1 ist dargestellt, dass der Bolzen 23 einen Bolzenschaft 28 und einen Bolzenkopf 29 aufweist, dessen Durchmesser etwas größer ist als der des Bolzenschaftes 28. Zumindest die Bohrung 22a in einer der Seitenwände 5 weist eine Stufe 30 auf, an der der Bolzenkopf 29 im eingesetzten Zustand zur Anlage kommt. Im eingesetzten Zustand des Bolzens 23 sind dessen Endflächen 31 , 32 am Bolzenkopf 29 und am Bolzenende bündig mit den Außenwandungen 5a der Seitenwände 5 des Ratschengehäuses 4. In Figure 1 it is shown that the bolt 23 has a bolt shank 28 and a bolt head 29 whose diameter is slightly larger than that of the bolt shank 28. At least the bore 22a in one of the side walls 5 has a step 30 at which the bolt head 29th comes in the inserted state to the plant. In the inserted state of the bolt 23, its end faces 31, 32 on the bolt head 29 and on the bolt end are flush with the outer walls 5a of the side walls 5 of the ratchet housing 4.
Die Lagesicherung des Bolzens 23 erfolgt durch eine unter Federvorspannung stehende Kugel 33 (Figur 1 ), die sich im eingesetzten Zustand des Bolzens 23 in eine (nicht dargestellte) Vertiefung in der Bohrungswandung des Befestigungsabschnitts 24 der Abstützeinrichtung 16 hineindrückt. The position of the bolt 23 is effected by a spring-loaded ball 33 (Figure 1), which pushes in the inserted state of the pin 23 in a (not shown) recess in the bore wall of the mounting portion 24 of the support means 16.
In Figur 1 ist als zu befestigende Abstützeinrichtung 16 eine Verschleißplatte 34 dargestellt mit einem Befestigungsabschnitt 24, der sich quer zur Plattenebene erstreckt. In Figure 1, a wear plate 34 is shown as a supporting device 16 to be fastened with a mounting portion 24 which extends transversely to the plane of the plate.
In den Figuren 2 bis 4 ist der Drehmomentschrauber 1 aus Figur 1 mit nunmehr befestigter Verschleißplatte 34 dargestellt. Im befestigten Zustand der Verschleißplatte 34 erstreckt sich deren Befestigungsabschnitt 24 durch die Zugangsöffnung 18 in der Randwand 12 des Drehmoment- schraubers 1 (Figuren 1 und 6) in den Freiraum 17 hinein. Der Bolzen 23 erstreckt sich dann - wie oben beschrieben - durch die Bohrungen 22a in den Seitenwänden 5 des Drehmoment- schraubers 1 und durch die Bohrung 22b im Befestigungsabschnitt 24 der Verschleißplatte 34 hindurch, wobei die federvorgespannte Lagesicherungskugel 33 in die Vertiefung in der Bohrung 22b des Befestigungsabschnitts 24 eingerastet ist. FIGS. 2 to 4 show the torque wrench 1 from FIG. 1 with the wear plate 34 now fastened. In the fastened state of the wear plate 34, its attachment section 24 extends through the access opening 18 in the peripheral wall 12 of the torque wrench 1 (FIGS. 1 and 6) into the free space 17. The bolt 23 then extends - as described above - through the holes 22a in the side walls 5 of the torque wrench 1 and through the bore 22b in the mounting portion 24 of the wear plate 34, wherein the spring-biased position securing ball 33 in the recess in the bore 22b of Attached portion 24 is engaged.
In ihrem am Drehmomentschrauber 1 befestigten Zustand liegt die Verschleißplatte 34 an der der Antriebseinheit 2 abgewandten Seite 19 bzw. Randwand 12 des Kragarms 13 an. In its state fastened to the torque wrench 1, the wear plate 34 bears against the side 19 or peripheral wall 12 of the cantilever 13 facing away from the drive unit 2.
In Figur 7 sind noch weitere Beispiele für mögliche Abstützeinrichtungen 16 dargestellt, wie eine Abstützeinrichtung 35 mit Verlängerung für die Druckweiterleitung oder eine Ring- Abstützeinrichtung 36 oder eine Abstützeinrichtung 37 mit Verlängerungsarm. In Figure 7, further examples of possible support means 16 are shown, such as a support means 35 with extension for the pressure transmission or a ring support means 36 or a support means 37 with extension arm.
Die Abstützeinrichtung 37 mit Verlängerungsarm weist keinen Befestigungsabschnitt auf, der in den Freiraum 17 des Drehmomentschraubers 1 eingeführt wird, sondern zwei einander gegenüberliegende, außen liegende Befestigungsabschnitte 38, die außen an die Seitenwände 5 des Drehmomentschraubers 1 angelegt werden. Der Bolzen 23 wird dann zunächst durch die Bohrung 22b in dem einen Befestigungsabschnitt 38, anschließend durch die Bohrung 22a in der benachbarten Seitenwand 5, dann durch den Freiraum 17 hindurch und schließlich durch die Bohrung 22a in der anderen Seitenwand 5 und durch die Bohrung 22b in dem anderen Befestigungsabschnitt 38 geführt. The support arm 37 with extension arm has no attachment portion which is inserted into the free space 17 of the torque wrench 1, but two opposing, outer mounting portions 38, the outside of the side walls 5 of the Torque wrench 1 are created. The bolt 23 is then first through the bore 22b in the one attachment portion 38, then through the bore 22a in the adjacent side wall 5, then through the clearance 17 and finally through the bore 22a in the other side wall 5 and through the bore 22b in the other attachment portion 38 out.
In allen Fällen werden die die beiden Seitenwände 5 des Ratschengehäuses 4 bzw. des Drehmomentschraubers 1 durchlaufenden Bohrungen 22a ausschließlich durch den Bolzen 23 zum Befestigen der Abstützeinrichtung 16 belastet und können daher die Bohrungen 22a und der Bolzen 23 optimal angeordnet und dimensioniert werden. In all cases, the two side walls 5 of the ratchet housing 4 and the torque screwdriver 1 through holes 22a are exclusively loaded by the bolt 23 for fixing the support means 16 and therefore the holes 22a and the bolt 23 can be optimally arranged and dimensioned.
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015011553.7A DE102015011553A1 (en) | 2015-09-02 | 2015-09-02 | torque wrench |
PCT/EP2016/001416 WO2017036579A1 (en) | 2015-09-02 | 2016-08-22 | Torque wrench |
Publications (2)
Publication Number | Publication Date |
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EP3344419A1 true EP3344419A1 (en) | 2018-07-11 |
EP3344419B1 EP3344419B1 (en) | 2022-07-20 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP16766848.2A Active EP3344419B1 (en) | 2015-09-02 | 2016-08-22 | Torque wrench |
Country Status (7)
Country | Link |
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US (1) | US10875160B2 (en) |
EP (1) | EP3344419B1 (en) |
JP (1) | JP6560817B2 (en) |
DE (1) | DE102015011553A1 (en) |
DK (1) | DK3344419T3 (en) |
ES (1) | ES2925070T3 (en) |
WO (1) | WO2017036579A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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GB2595500B (en) * | 2020-05-28 | 2024-02-14 | Atlas Copco Ind Technique Ab | Tools |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4409865A (en) | 1981-01-15 | 1983-10-18 | Unex Corporation | Continuous ratchet drive |
US4663997A (en) * | 1986-01-14 | 1987-05-12 | Junkers John K | Fluid-operated wrench |
US5203238A (en) * | 1989-10-27 | 1993-04-20 | Raymond Engineering Inc. | Low profile rack and pinion wrench |
US20020073808A1 (en) * | 2000-12-15 | 2002-06-20 | Jamra James A. | Housing for a power tool |
JP2010023209A (en) * | 2008-07-23 | 2010-02-04 | Bestma Kk | Torque wrench device |
US8371190B2 (en) * | 2008-11-06 | 2013-02-12 | Asaf Miller | Fingertip tool holder |
JP6272758B2 (en) * | 2011-08-26 | 2018-01-31 | ハイトーク ディビジョン ユネックス コーポレイション | Instruments for tightening screw-in fasteners |
US20160067849A1 (en) * | 2013-04-24 | 2016-03-10 | HYTORC Division Unex Corporation | Apparatus for tightening threaded fasteners |
-
2015
- 2015-09-02 DE DE102015011553.7A patent/DE102015011553A1/en not_active Withdrawn
-
2016
- 2016-08-22 EP EP16766848.2A patent/EP3344419B1/en active Active
- 2016-08-22 DK DK16766848.2T patent/DK3344419T3/en active
- 2016-08-22 US US15/578,863 patent/US10875160B2/en active Active
- 2016-08-22 ES ES16766848T patent/ES2925070T3/en active Active
- 2016-08-22 JP JP2018503203A patent/JP6560817B2/en active Active
- 2016-08-22 WO PCT/EP2016/001416 patent/WO2017036579A1/en active Application Filing
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US20180178356A1 (en) | 2018-06-28 |
JP6560817B2 (en) | 2019-08-14 |
DK3344419T3 (en) | 2022-08-15 |
DE102015011553A1 (en) | 2017-03-02 |
JP2018523585A (en) | 2018-08-23 |
ES2925070T3 (en) | 2022-10-13 |
EP3344419B1 (en) | 2022-07-20 |
US10875160B2 (en) | 2020-12-29 |
WO2017036579A1 (en) | 2017-03-09 |
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