EP3153279B1 - Hand tool in the form of expanding pliers - Google Patents
Hand tool in the form of expanding pliers Download PDFInfo
- Publication number
- EP3153279B1 EP3153279B1 EP16002106.9A EP16002106A EP3153279B1 EP 3153279 B1 EP3153279 B1 EP 3153279B1 EP 16002106 A EP16002106 A EP 16002106A EP 3153279 B1 EP3153279 B1 EP 3153279B1
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- European Patent Office
- Prior art keywords
- tool
- tool part
- receiving groove
- adjusting
- lever
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- 238000004873 anchoring Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
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- 230000000149 penetrating effect Effects 0.000 description 1
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Classifications
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- 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
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
- B25B27/20—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same inserting or withdrawing split pins or circlips
- B25B27/205—Pliers or tweezer type tools with tow actuated jaws
Definitions
- Hand tool designed in the manner of expanding pliers with a first hand lever having a first handle part and a first tool part and a second hand lever having a second handle part and a second tool part, which are pivotable relative to one another, the tool ends of the tool parts being arranged in a common plane and can be inserted into a receiving groove of a bore of a component in such a way that the tool ends can be brought into engagement with ends of a securing ring seated in the receiving groove that are spaced apart in the circumferential direction by actuating the handle parts of the hand levers.
- Circlips or snap rings have long been known in mechanical engineering. They are primarily used for the axial fixing of components on a shaft or in a mounting hole. For example, circlips are used as so-called internal circlips to secure bearings in a receiving bore and as so-called external circlips to secure the position on a shaft or axle. If a component is to be axially fixed in a bore, a corresponding circumferential receiving groove into which the retaining ring can be inserted is provided in the bore to accommodate the internal retaining ring, hereinafter generally referred to as retaining ring. In order to be able to use this retaining ring in such a receiving groove, it is necessary to deform it in a resilient manner so that whose diameter can be reduced. In this regard, such securing rings are "slotted" and accordingly form two end sections spaced from one another in the circumferential direction, so that the securing ring can be "compressed".
- Circlips of different designs are known, in particular in order to be able to dismantle, that is to say, remove such a circlip from the receiving groove.
- locking rings which are provided with radially inwardly projecting eyelets in the area of their end sections, with which specially designed so-called locking ring pliers can be brought into engagement.
- safety pliers have two hand levers which are connected to one another in a pivotable manner.
- the hand levers are provided with handle parts by means of which the circlip pliers can be actuated.
- each hand lever forms a tool part, the free ends of which are designed, for example, like a pin, in order to be able to be brought into engagement with the eyelets or the bores of the eyelets of the locking ring.
- Internal locking rings are also known in which at least one of the end sections has a leg directed radially inward. This leg can be gripped with conventional pliers to dismantle the internal locking ring from the associated receiving groove. A rotating movement of the pliers engaged with the leg can also reduce the diameter of the internal locking ring, at least in the end region of the leg, so that the internal locking ring can be axially removed from the receiving groove.
- retaining rings are also known which can be inserted into a receiving groove on a shaft or an axle.
- expanding pliers are known. These expanding pliers also have two hand levers, each of which has a handle part and a tool part opposite to this with respect to a pivot axis.
- expanding pliers which are designed like pins in their free end regions of the tool parts in order to be able to bring the tool parts into engagement with the eyes of a locking ring. If these pins of the tool parts are in engagement with the eyes of the locking ring and the expanding pliers are then operated via their handle parts, the distance between the tool parts increases with the effect that the locking ring is expanded and thus can be removed from a circumferential receiving groove of a shaft or axle.
- retaining rings are also known which are not provided with such eyelets or radially extending legs.
- Such securing rings have ends, for example, whose end faces run obliquely to a radial or tangent of the ring.
- end faces run obliquely to a radial or tangent of the ring.
- DE 10 2012 016 491 A1 referenced.
- a round wire locking ring is described, the ends of which are provided with sloping end faces. In this respect, reference is made here in full to this publication.
- an associated hand tool is also described, which is designed in the manner of expanding pliers, which is provided in particular for assembling and disassembling such round wire locking rings.
- these expanding pliers have tool parts called lever jaws, which are provided with functional surfaces. These functional surfaces of the two tool parts are also bevelled, so that they can be brought into engagement with the end faces of the end sections of the round wire locking ring.
- the special design of the end faces of both the end sections of the round wire locking ring and the lever jaws, the engagement should be designed in such a way that a round wire locking ring inserted as an internal locking ring in a receiving groove of a bore can be "levered out” by means of these expanding pliers.
- Round wire locking ring is intended here to cause the ends of the round wire locking ring to "slide" along the inclined end faces of the lever jaws of the expanding pliers, so that the ends with their inclined end faces of the round wire locking ring are adjusted radially inwards out of the receiving groove, at least in these end areas, so that then at least these end areas can be adjusted axially, which in turn is intended to bring about a reduction in the diameter of the round wire locking ring in the bore.
- the invention is based on the object of designing a hand tool designed in the manner of expanding pliers in such a way that, in particular, internal locking rings can be safely removed from a receiving groove of a bore.
- one of the tool parts is adjustable relative to the other tool part relative to the receiving groove in such a way that the end portion of the locking ring which is in engagement with this tool part is bent out of the receiving groove, and that the tool parts have arcuate lateral support surfaces facing each other, via which the tool parts can be pivoted and adjusted relative to one another in the assembled state of the hand levers, and that the second tool part has a bearing pin protruding vertically upwards and that the first tool part has an upwardly protruding one Has adjusting pin and that an adjusting lever is provided which can be brought into operative connection with the bearing pin and the adjusting pin in such a way that a rotation of the adjusting lever about the bearing pin causes an adjustment of the adjusting pin, whereby the relative adjustment of one tool part relative to the other tool part takes place .
- the configuration according to the invention makes it possible to bend at least one end section of a securing ring seated in a receiving groove of a bore radially out of the receiving groove to such an extent that this end region can be axially removed from the receiving groove.
- the facing, arcuate, lateral support surfaces of the tool parts achieve an extremely simple mounting of the two hand levers over their tool parts, which allows both a pivoting of the two hand levers with their tool parts and a relative adjustability of the tool parts.
- the curved support surfaces of the tool parts lie against one another, so that the two tool parts can be pivoted against one another together with the hand levers due to the curved shape. Since the support surfaces are in flat contact, the one support surface can simultaneously slide along the other support surface, so that the tool parts together with the hand levers can also be easily adjusted at the same time via the support surfaces in the direction of the hand lever.
- both tool ends of the tool parts are inserted into a receiving groove of a securing ring, one of the tool parts can accordingly be adjusted relative to the other tool part from the receiving groove essentially in the radial direction to the receiving groove.
- This configuration thus results in an extremely simple rotatable and adjustable mounting of the two tool parts.
- the adjustment of the hand lever is effected by an additional adjusting lever, which with the two hand levers is in operative connection in such a way that when it is actuated, the relative adjusting movement of the two tools to one another is effected.
- the second tool part has a vertically upwardly projecting bearing pin and that the first tool part has an upwardly projecting adjusting pin and that the adjusting lever can be brought into operative connection with the bearing pin and the adjusting pin in such a way that rotation of the adjusting lever around the bearing pin causes an adjustment of the adjusting pin, whereby the relative adjustment of one tool part takes place relative to the other tool part.
- the adjusting lever is rotatably supported on the second (other) tool part on its bearing pin, so that it serves as an abutment. If one (first) tool part is now brought from an initial position to an end position when the adjusting lever is rotated, one tool part is "pulled” out of the receiving groove together with the end section of the locking ring with which the tool part is connected, deforming the locking ring. .
- the other tool part is supported in the groove base of the receiving groove.
- a plastic deformation of the end section of the locking ring can also be achieved here, so that after removing the expanding pliers according to the invention, the inwardly bent end of the locking ring can be gripped with conventional pliers, so that the locking ring can be easily removed from the Groove and thus can be removed from the bore.
- the second tool part can be provided with a centering disk.
- This centering disk can be inserted, for example, in a bearing ring of a roller bearing secured in a bore by the retaining ring, so that the application of the hand tool in the area of a retaining ring to be dismantled is made easier.
- the first tool part is received on the second tool part between the centering disk and the guide disk. This particularly also facilitates the joint placement of the hand tool with both tool parts in a receiving groove, since the first tool part is adjustably connected to this second tool part due to this configuration, in particular lying in a common plane with the second tool part.
- Fig. 1 shows a perspective exploded view of a first hand lever 1 and a second hand lever 2 of a possible embodiment of a hand tool 3 according to the invention is connected parallel to the handle part 4 (front) first tool part 6.
- the illustrated two-fold bent shape of the hand lever 1 is only an example. It can also be provided that the handle part 4 is directly connected to the tool part 6 or that the connection section 5 does not run at a right angle inclined to the handle part 4 and / or to the tool part 6.
- the tool part 6 also does not necessarily have to run parallel to the handle part 4.
- the connecting section 5 is not provided, that the handle part is arranged, for example, at an incline “upwards” on the “horizontally” running tool part 6. This is ultimately dependent on the specific conditions of use for which the hand tool 3 is intended in the individual case. The same also applies to the design of the second hand lever 2.
- This first tool part 6 has a receiving bore 7 into which an adjusting pin 8 can be fixedly inserted.
- the receiving bore 7 is arranged approximately centrally in the first tool part 6.
- the first tool part 6 is equipped with a claw-like tool end 9.
- the tool part 6 is designed to be reduced in its vertical height, so that it can be inserted into a receiving groove of a locking ring.
- the first tool part 6 has a slightly curved support surface 10 towards the second hand lever 2, the function of which will be explained in more detail later.
- the second hand lever 2 of the hand tool 3 has a second tool part 15 which, in the exemplary embodiment shown, runs parallel to a second handle part 16 of the second hand lever 2 and is also fixedly connected to the second handle part 16 via a (vertical) connecting section 17.
- the second tool part 15 also forms a tool end 18, which is also designed in the shape of a hook.
- the tool part 15 is also equipped with a lower height, so that it can also be inserted into a receiving groove of a locking ring.
- the tool part 15 also forms an engagement surface 19 which is inclined at an angle to the longitudinal center axis 20 of the second tool part 15, as can be seen from the drawing.
- a centering disk 25 can be seen, which can be fixedly mounted on the underside of the second tool part 15.
- a mounting pin 26 and a bearing pin 27 are provided in the present embodiment, which can be fixedly inserted through corresponding mounting bores 28 and 29 of the second tool part 15 and fixedly engaged with corresponding receiving bores 30 and 31 of the centering sheath.
- press connections or any other suitable connection can be provided here.
- a guide disk 32 can be seen, which can be mounted on the upper side of the second tool part 15 by means of a mounting screw 33.
- this tool part 15 has a corresponding threaded bore 34 towards its tool end 18.
- the angled configuration of the first hand lever 1 and of the second hand lever 2 with the angled connecting sections 5 and 17 shown as an example is provided in order to be able to bring the two tool parts 6 and 15 into engagement with a locking ring, which has a certain "depth" is used in a receiving groove of a bore.
- the two connecting sections 5 and 17 can also be made longer or shorter.
- Fig. 1 It can be at least indicated that the lateral support surface 21 of the second tool part 15, which is opposite the engagement surface 19, also has an arcuate course. Due to the arcuate shape of this support surface 21 and the support surface 10, the two hand levers 1 and 2 with their tool parts 6 and 15 can be arranged lying next to one another in a common plane and can be pivoted relative to one another by actuating the handle parts 4 and 16.
- Fig. 2 shows the first hand lever 1 with an abbreviated handle part 4 in a perspective illustration of its first tool part 6 with the adjusting pin 8 mounted on the tool part 6.
- Fig. 3 shows the second hand lever 2 with its second handle part 16, shown in abbreviated form, the connecting section 17 and the second tool part 15, the second handle part 16 also being shown here in shortened form.
- centering disk 25 is arranged on the underside of the tool part 15 and over the mounting pin 26 and the bearing pin 27 fixedly attached to the second tool part 15. It is off Fig. 3 It can be seen that the centering disk 25 protrudes laterally beyond the curved support surface 21.
- Fig. 4 shows the representation Fig. 3 of the second hand lever 2 with its handle part 16, the vertical connecting section 17 and the second tool part 15.
- the guide disk 32 is attached to the top of the second tool part 15 via the mounting screw 33. This guide disk 32 also protrudes laterally beyond the tool part 15, at least beyond the curved support surface 21, so that the guide disk 32 forms a type of guide element.
- the first hand lever 1 with its first tool part 6 can be inserted into this receiving area 40, so that the first tool part 6 can be brought into contact with its support surface 10 with the support surface 21 of the second tool part 15.
- the guide element shown here as an example in the form of the guide disk 32 can also have a different outer contour and does not necessarily have to be circular. This also does not necessarily have to be screwed to the tool part 15.
- This guide element 35 is designed like a plate and can be fixedly connected to the tool part 15 by means of a welded or soldered connection or, with an appropriate configuration, also by means of a screw connection.
- the centering disk 25 is provided below the tool part 15 and is fixedly mounted on the tool part 15 via the mounting pin 26 and the bearing pin 27.
- Fig. 6 shows the assembled state of the first hand lever 1 and the second hand lever 2 from FIG Figs. 2 and 4 . It can be seen that the first tool part 6 is accommodated between the upper guide element designed as a guide disk 32 and the lower centering disk 25 and is in contact with the second tool part 15 below the guide disk 32. Due to this guidance of the first tool part 6 between the guide disk 32 and the centering disk 25, the two tool parts 6 and 15 are arranged in a common plane 22 and can thus be used together in a receiving groove of a locking ring.
- FIG. 7 This assembled state of the two hand levers 1 and 2 with their tool parts 6 and 15 is shown Fig. 7 in a plan view VI Fig. 6 . From this top view of the Fig. 7 it can again be seen that the two tool parts 6 and 15 are in contact with one another with their support surfaces 10 and 21 which run in an arc. The first tool part 6 is received in a pivotable manner relative to the second tool part 15 between the lower centering disk 25 and the upper guide disk 32. Thus, the two hand levers 1 and 2 via their in Fig.
- an adjusting lever 50 is provided which is shown in FIG Fig. 8 can be seen in a perspective view.
- the adjusting lever 50 off Fig. 8 has a handle 51 on which a plate-shaped adjusting device 52 is arranged.
- This adjusting device 52 runs essentially parallel to the handle 51 and is fixedly connected to it via a connecting section 53 extending at right angles to the handle 51 or to the adjusting device 52.
- this angled configuration of the adjusting lever 50 is only an example and that, as described for the two hand levers 1 and 2, other shapes are also conceivable.
- the adjusting device 52 has a slot-like opening 55 in the region of its "free" end 54, with which the adjusting device 52 with the bearing pin 27 of the second tool part 15 is formed Fig. 3 is adjustably engageable.
- the adjusting device 52 Towards the connecting section 53, the adjusting device 52 has a through-hole 56 at a distance from its opening 55, with which the adjusting device 52 is connected to the Fig. 2 recognizable adjusting pin 8 of the first tool part 6 can be brought into engagement.
- FIG. 9 a perspective illustration of the hand tool 3 with its first hand lever 1, the second hand lever 2 and the adjusting lever 50 attached to the hand tool 3 Fig. 8 .
- the first hand lever 1 and the second hand lever 2 are shown in shortened form so that the associated handle parts 4 and 16 are only partially visible.
- the adjusting lever 50 is also shown shortened, so that its handle 51 is also only partially visible. How out Fig. 9 As can be seen, the two hand levers 1 and 2 are joined together, as shown in FIG Fig. 4 and the associated description.
- the adjusting lever 50 is attached to the hand tool 3 with its adjusting device 52 and, in the engagement position shown, rests on the upper side on the two tool parts 6 and 15 or on the guide disk 32.
- the adjusting device 52 is in engagement with its opening 55 with the vertically upwardly projecting bearing pin 27 of the second tool part 15.
- the through hole 56 of the adjusting device 52 is pushed onto the adjusting pin 8 of the first tool part 6, which likewise protrudes vertically upwards.
- the adjusting lever 50 By actuating (rotating) the adjusting lever 50 in the direction of the arrow 60, the adjusting lever 50 is adjusted around the bearing pin 27 in the direction of the arrow 60, so that the adjusting pin 8 is also adjusted due to its engagement with the through hole 56 of the adjusting lever 50.
- This bearing bore 66 can have a plurality of conically formed, axially spaced sections 67 and 68, between which a cylindrical section 69 is located. These sections 67, 69 and 68, which follow one another in the axial direction, serve to facilitate the assembly of a locking ring 70, which is shown in FIG Fig. 10 is already used in a circumferential receiving groove 71.
- the securing ring 70 is "slotted" and has two end sections 72 and 73 spaced apart from one another in the circumferential direction.
- the end faces 74 and 75 of these end sections 72 and 73 can be designed so as to be inclined to a radial 76 or 77 penetrating them, as exemplified by FIG DE 10 2012 016 491 for the round wire locking ring described there.
- the locking ring 70 is in the Fig. 10 shown fully assembled position in the groove base 78 of the receiving groove 71, so that it cannot be gripped from behind in its circumferential area by means of a tool, so that it cannot be pressed together for dismantling from the receiving groove 71.
- the hand tool 3 according to the invention is provided.
- a roller bearing 80 is fitted, which is axially secured by the securing ring 70.
- This roller bearing 80 has, in particular, an inner bearing ring 81 which has a correspondingly associated through-hole 82, for example for the rotatable mounting of a shaft.
- Fig. 11 As can be seen, the hand tool 3 with the radially outer tool ends 9 and 18 of its tool parts 6 and 15 can be inserted between the two end sections 72 and 73 of the securing ring 70. It is closed Fig. 8 The illustrated adjusting lever 50 is not placed on the two tool parts 6 and 15 or their adjusting pin 8 or bearing pin 27.
- the centering disk 25 is provided, which consists of Fig. 11 is hinted at and accordingly in this attached position Fig. 11 in the inner bearing ring 81 or in the out Fig. 9 apparent through hole 82 of the bearing ring 81 is used.
- Fig. 12 shows a plan view XI from Fig. 10 , from which it can be seen how the two front tool ends 9 and 18 are arranged between the two end sections 72 and 73 of the locking ring 70. Since the two hand levers 1 and 2 with their handle parts 4 and 16 are in an "open" angular position, the two engagement surfaces 12 and 19 of the two tool parts 6 and 15 are spaced apart from one another which is smaller than the distance between the two end faces 74 and 75 of the end sections 72 and 73 of the locking ring 70.
- FIG. 13 This engagement position is exemplified in the plan view Fig. 13 removable. Furthermore is Fig. 12 and Fig. 13 It can also be seen that the tool part 15 with its centering disk 25 is inserted into the inner bearing ring 81 of the roller bearing 80 in a suitable manner. Out Fig. 13 Furthermore, the groove bottom 78 can be seen in dashed lines, on which the two tool ends 9 and 18 are in radial contact in this attached initial state.
- Fig. 13 it can be seen here that the adjusting device 52 with its slot-like opening 55 is in engagement with the bearing pin 27.
- the through hole 56 of the adjusting device 52 is in turn in engagement with the adjusting pin 8 of the first tool part 6. If the adjusting lever 50 is now over its in Fig. 13 If the handle 51 shown in abbreviated form is adjusted around the bearing pin 27 in the direction of the arrow 60, the adjusting pin 8 accordingly also moves essentially in the direction of the arrow 61, whereby a relative adjusting movement of the hand lever 1 relative to the hand lever 2 with its tool part 6 relative to the tool part 15 is effected.
- the front tool end 9 of the first tool part 6 also moves relative to the front tool end 18 of the second tool part 15 in the direction of the arrow 61.
- the front tool end 18 of the second tool part 15 is supported in the groove base 78 (shown in dashed lines) of the in Fig. 12 for the sake of clarity, receiving groove 71 (not shown) Fig. 10 radially. Since the tool end 9 is in operative connection with its engagement surface 12 with the end section 73 of the locking ring 70, this end section 73 is inevitably also bent in the direction of the arrow 61 essentially radially out of the receiving groove. To fully bend this end section 73 out of the receiving groove, the adjusting lever 50 is removed from the position shown in FIG Fig. 13 shown Starting position in the in Fig. 14 The illustrated end position is adjusted about the bearing pin 27.
- Fig. 14 it can be seen that the hand lever 1 has been adjusted relative to the hand lever 2 by the adjusting movement of the adjusting lever 50 in the direction of the arrow 60 in the direction of the arrow 61. Due to the engagement of the tool end 9 with its engaging surface 12 with the end section 73 of the locking ring 70, this end section 73 becomes like this Fig. 14 can be seen, bent radially inward, with a plastic deformation of the locking ring 70 taking place here.
- FIG. 15 an embodiment variant in which either the first hand lever 1 or the second hand lever 2 can be adjusted in the direction of the arrow 61 by the adjusting lever 50.
- the same reference numbers are entered here as in Fig. 14 so that the associated description is also on Fig. 15 can be read as long as the functional relationships are identical.
- the mounting pin 26 and the bearing pin 27 are interchanged, so that the mounting pin 26 is in the out Fig. 1 visible mounting hole 28 and the bearing pin 27 in the from Fig. 1 visible mounting hole 29 is used.
- the guide disk 32 is used as the guide element, it has an opening 36. Since the bearing pin 27 protrudes "upwards" beyond the tool part 15 in the assembled state, this opening 36 is to be provided in the guide disk 32, as shown in the plan view of FIG Fig. 15 is recognizable.
- the guide element can also have a completely different shape, so that the opening 36 can also be omitted.
- the hand lever 1 is adjusted together with its tool part 6 in the direction of the arrow 61, as is the case with the Fig. 13 and 14th is described for the first variant.
- one of the two end sections 72 or 73 or both end sections 72 and 73 can be bent radially inward if necessary. If both end sections 72 and 73 are bent inwards one after the other, the subsequent dismantling of the securing ring 70 is further simplified, since these end sections 72 and 73, which are bent radially inward, can be grasped with "conventional" pliers. With such a pair of pliers, the circumferential distance between the two inwardly bent end sections 72, 73 of the locking ring 70 can easily be reduced, so that the diameter of the locking ring 70 is correspondingly reduced and it can thus be axially removed from the receiving groove 71 in a simple and safe manner can.
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Description
Nach Art einer Spreizzange ausgebildetes Handwerkzeug mit einem ersten, ein erstes Griffteil und ein erstes Werkzeugteil aufweisenden Handhebel und einem zweiten ein zweites Griffteil und ein zweites Werkzeugteil aufweisenden Handhebel, welche relativ zueinander schwenkbar sind, wobei die Werkzeugenden der Werkzeugteile in einer gemeinsamen Ebene angeordnet sind und in eine Aufnahmenut einer Bohrung eines Bauteils derart einsetzbar sind, dass die Werkzeugenden mit in Umfangsrichtung voneinander beabstandeten Enden eines in der Aufnahmenut sitzenden Sicherungsringes durch Betätigen der Griffteile der Handhebel in Eingriff bringbar sind.Hand tool designed in the manner of expanding pliers with a first hand lever having a first handle part and a first tool part and a second hand lever having a second handle part and a second tool part, which are pivotable relative to one another, the tool ends of the tool parts being arranged in a common plane and can be inserted into a receiving groove of a bore of a component in such a way that the tool ends can be brought into engagement with ends of a securing ring seated in the receiving groove that are spaced apart in the circumferential direction by actuating the handle parts of the hand levers.
Sicherungsringe oder auch Sprengringe genannt, sind im Maschinenbau schon lange bekannt. Sie dienen vornehmlich zur axialen Festlegung von Bauteilen auf einer Welle oder in einer Aufnahmebohrung. So werden Sicherungsringe als sog. Innensicherungsringe zur Lagersicherung in einer Aufnahmebohrung und als sog. Außensicherungsringe zur Lagesicherung auf einer Welle oder Achse eingesetzt. Soll ein Bauteil in einer Bohrung axial festgelegt werden, so ist zur Aufnahme des Innensicherungsringes, nachfolgend allgemein Sicherungsring genannt, in der Bohrung eine entsprechend umlaufende Aufnahmenut vorgesehen, in welche der Sicherungsring einsetzbar ist. Um diesen Sicherungsring in eine solche Aufnahmenut einsetzen zu können, ist es erforderlich diesen federelastisch zu verformen, so dass dessen Durchmesser verringert werden kann. Diesbezüglich sind solche Sicherungsringe "geschlitzt" ausgebildet und bilden dementsprechend zwei in Umfangsrichtung voneinander beabstandete Endabschnitte, so dass der Sicherungsring "zusammengedrückt" werden kann.Circlips or snap rings have long been known in mechanical engineering. They are primarily used for the axial fixing of components on a shaft or in a mounting hole. For example, circlips are used as so-called internal circlips to secure bearings in a receiving bore and as so-called external circlips to secure the position on a shaft or axle. If a component is to be axially fixed in a bore, a corresponding circumferential receiving groove into which the retaining ring can be inserted is provided in the bore to accommodate the internal retaining ring, hereinafter generally referred to as retaining ring. In order to be able to use this retaining ring in such a receiving groove, it is necessary to deform it in a resilient manner so that whose diameter can be reduced. In this regard, such securing rings are "slotted" and accordingly form two end sections spaced from one another in the circumferential direction, so that the securing ring can be "compressed".
Dabei sind Sicherungsringe unterschiedlicher Ausführungen bekannt, um insbesondere die Demontage, das heißt das Herausnehmen eines solchen Sicherungsringes aus der Aufnahmenut bewerkstelligen zu können.Circlips of different designs are known, in particular in order to be able to dismantle, that is to say, remove such a circlip from the receiving groove.
Hierzu gibt es Sicherungsringe, welche im Bereich ihrer Endabschnitte mit radial nach innen vorstehenden Ösen versehen sind, mit welchen eine speziell ausgebildete sog. Sicherungsringzange in Eingriff gebracht werden kann. Hierzu weist eine solche Sicherungszange zwei Handhebel auf, welche schwenkbeweglich miteinander in Verbindung stehen. Die Handhebel sind einerseits mit Griffteilen versehen, über welche die Sicherungsringzange betätigbar ist. Diesen Griffteilen gegenüberliegend bildet jeder Handhebel ein Werkzeugteil, dessen freie Enden beispielsweise stiftartig ausgebildet sind, um mit den Ösen bzw. den Bohrungen der Ösen des Sicherungsringes in Eingriff gebracht werden zu können.For this purpose there are locking rings which are provided with radially inwardly projecting eyelets in the area of their end sections, with which specially designed so-called locking ring pliers can be brought into engagement. For this purpose, such safety pliers have two hand levers which are connected to one another in a pivotable manner. On the one hand, the hand levers are provided with handle parts by means of which the circlip pliers can be actuated. Opposite these handle parts, each hand lever forms a tool part, the free ends of which are designed, for example, like a pin, in order to be able to be brought into engagement with the eyelets or the bores of the eyelets of the locking ring.
Steht eine solche Sicherungsringzange mit diesen Ösen in Eingriff und werden die Handhebel über deren Griffteile entsprechend betätigt, so verringert sich der Abstand der Werkzeugteile. Damit wird der Sicherungsring gleichzeitig radial nach innen gespannt, so dass der Abstand der beiden Endabschnitte des Sicherungsringes ebenfalls verringert wird. Durch dieses Spannen des Sicherungsringes verkleinert sich entsprechend dessen Durchmesser. Bei entsprechender Dimensionierung des Abstandes der beiden Endabschnitte des Sicherungsringes ist somit der Sicherungsring soweit "zusammendrückbar", dass dieser aus der umlaufenden Aufnahmenut der Bohrung herausgenommen werden kann.If such circlip pliers are in engagement with these eyelets and the hand levers are actuated accordingly via their handle parts, the distance between the tool parts is reduced. In this way, the locking ring is simultaneously tensioned radially inward, so that the distance between the two end sections of the locking ring is also reduced. This tensioning of the locking ring reduces its diameter accordingly. With appropriate dimensioning of the distance between the two end sections of the securing ring, the securing ring is thus "compressible" to such an extent that it can be removed from the circumferential groove of the bore.
Weiter sind Innensicherungsringe bekannt, bei welchen wenigstens einer der Endabschnitte einen radial nach innen gerichteten Schenkel aufweist. Dieser Schenkel kann zur Demontage des Innensicherungsringes aus der zugehörigen Aufnahmenut mit einer herkömmlichen Zange gegriffen werden. Durch eine drehende Bewegung der mit dem Schenkel in Eingriff stehenden Zange kann ebenfalls eine Verringerung des Durchmessers des Innensicherungsringes zumindest im Endbereich des Schenkels bewirkt werden, so dass der Innensicherungsring aus der Aufnahmenut axial heraus genommen werden kann.Internal locking rings are also known in which at least one of the end sections has a leg directed radially inward. This leg can be gripped with conventional pliers to dismantle the internal locking ring from the associated receiving groove. A rotating movement of the pliers engaged with the leg can also reduce the diameter of the internal locking ring, at least in the end region of the leg, so that the internal locking ring can be axially removed from the receiving groove.
Des Weiteren sind auch Sicherungsringe bekannt, welche entsprechend auf einer Welle oder einer Achse in eine Aufnahmenut einsetzbar sind. Um einen solchen Außensicherungsring, welcher ebenfalls mit radial nach außen vorstehenden Aufnahmeösen versehen sein kann, aus der Aufnahmenut herausnehmen zu können, sind sogenannte Spreizzangen bekannt. Diese Spreizzangen weisen ebenfalls zwei Handhebel auf, welche jeweils ein Griffteil und diesen in Bezug auf eine Schwenkachse gegenüberliegendes Werkzeugteil aufweisen.Furthermore, retaining rings are also known which can be inserted into a receiving groove on a shaft or an axle. In order to be able to remove such an external locking ring, which can also be provided with radially outwardly protruding receiving eyes, from the receiving groove, so-called expanding pliers are known. These expanding pliers also have two hand levers, each of which has a handle part and a tool part opposite to this with respect to a pivot axis.
Bei diesen Spreizzangen bewirkt die Betätigung des Griffteils bzw. der Griffteile eine Vergrößerung des Abstandes der beiden Werkzeugteile, so dass ein Außensicherungsring mittels einer solchen Spreizzange aufgespreizt werden kann. Hierzu sind Spreizzangen bekannt, welche in ihren freien Endbereichen der Werkzeugteile stiftartig ausgebildet sind, um die Werkzeugteile mit den Ösen eines Sicherungsringes in Eingriff bringen zu können. Stehen diese Stifte der Werkzeugteile mit den Ösen des Sicherungsringes in Eingriff und wird sodann die Spreizzange über ihre Griffteile betätigt, so vergrößert sich der Abstand der Werkzeugteile mit der Wirkung, dass der Sicherungsring aufgeweitet wird und somit aus einer umlaufenden Aufnahmenut einer Welle oder Achse herausgenommen werden kann.In the case of these expanding pliers, the actuation of the handle part or the grip parts increases the distance between the two tool parts, so that an external locking ring can be expanded by means of such expanding pliers. For this purpose, expanding pliers are known which are designed like pins in their free end regions of the tool parts in order to be able to bring the tool parts into engagement with the eyes of a locking ring. If these pins of the tool parts are in engagement with the eyes of the locking ring and the expanding pliers are then operated via their handle parts, the distance between the tool parts increases with the effect that the locking ring is expanded and thus can be removed from a circumferential receiving groove of a shaft or axle.
Des Weiteren sind aber auch Sicherungsringe bekannt, welche nicht mit derartigen Ösen oder radial verlaufenden Schenkeln versehen sind. Solche Sicherungsringe weisen beispielsweise Enden auf, deren Stirnflächen schräg zu einer Radialen bzw. Tangente des Ringes verlaufen. Hier sei beispielsweise auf die
In dieser Druckschrift ist des Weiteren ein zugehöriges Handwerkzeug beschrieben, welches nach Art einer Spreizzange ausgebildet ist, welche insbesondere zum Montieren und zum Demontieren von solchen Runddrahtsicherungsringen vorgesehen ist.In this publication, an associated hand tool is also described, which is designed in the manner of expanding pliers, which is provided in particular for assembling and disassembling such round wire locking rings.
Hierzu weist diese Spreizzange als Hebelbacken bezeichnete Werkzeugteile auf, welche mit Funktionsflächen versehen sind. Diese Funktionsflächen der beiden Werkzeugteile sind ebenfalls abgeschrägt ausgebildet, so dass diese "passend" mit den Stirnflächen der Endabschnitte des Runddrahtsicherungsringes in Eingriff bringbar sind. Dabei soll die spezielle Ausgestaltung der Stirnflächen sowohl der Endabschnitte des Runddrahtsicherungsringes als auch der Hebelbacken, der Eingriff dahingehend ausgebildet sein, dass ein als Innensicherungsring in einer Aufnahmenut einer Bohrung eingesetzter Runddrahtsicherungsring mittels dieser Spreizzange "ausgehebelt" werden kann.For this purpose, these expanding pliers have tool parts called lever jaws, which are provided with functional surfaces. These functional surfaces of the two tool parts are also bevelled, so that they can be brought into engagement with the end faces of the end sections of the round wire locking ring. The special design of the end faces of both the end sections of the round wire locking ring and the lever jaws, the engagement should be designed in such a way that a round wire locking ring inserted as an internal locking ring in a receiving groove of a bore can be "levered out" by means of these expanding pliers.
Da beim Betätigen der Abstand der Stirnflächen der Hebelbacken vergrößert wird, wird jedoch der Runddrahtsicherungsring bei entsprechender Betätigung in die Aufnahmenut der Bohrung hineingedrückt. Die Schrägstellung der Hebelbacken in Verbindung mit der Schrägstellung der endseitigen Stirnflächen desSince the distance between the end faces of the lever jaws is increased when actuated, the round wire locking ring is, however, pressed into the receiving groove of the bore when actuated accordingly. The inclination of the lever jaws in conjunction with the inclination of the end faces of the
Runddrahtsicherungsringes soll hier allerdings bewirken, dass die Enden des Runddrahtsicherungsringes entlang der schräg gestellten Stirnflächen der Hebelbacken der Spreizzange "aufgleiten", so dass die Enden mit ihren schrägen Stirnflächen des Runddrahtsicherungsringes zumindest in diesen Endbereichen aus der Aufnahmenut radial nach innen verstellt werden, so dass anschließend zumindest diese Endbereiche axial verstellt werden können, wodurch wiederum in der Bohrung eine Durchmesserreduzierung des Runddrahtsicherungsringes bewirkt werden soll.Round wire locking ring is intended here to cause the ends of the round wire locking ring to "slide" along the inclined end faces of the lever jaws of the expanding pliers, so that the ends with their inclined end faces of the round wire locking ring are adjusted radially inwards out of the receiving groove, at least in these end areas, so that then at least these end areas can be adjusted axially, which in turn is intended to bring about a reduction in the diameter of the round wire locking ring in the bore.
Diese Kombination des Runddrahtsicherungsringes mit seinen schrägen Stirnflächen sowie dem zugehörigen Handwerkzeug ist für Innensicherungsringe mit rechteckigem Querschnitt nicht einsetzbar, da das radiale Verstellen bei Sicherungsringen mit rechteckigem Querschnitt nicht derart bewerkstelligt werden kann, dass zumindest die Endabschnitte vollständig aus der Aufnahmenut radial nach innen heraus verstellt werden können.This combination of the round wire locking ring with its inclined end faces and the associated hand tool cannot be used for internal locking rings with a rectangular cross-section, since the radial adjustment of locking rings with a rectangular cross-section cannot be carried out in such a way that at least the end sections are completely adjusted radially inward out of the receiving groove can.
Dementsprechend liegt der Erfindung die Aufgabe zugrunde, ein nach Art einer Spreizzange ausgebildetes Handwerkzeug derart auszugestalten, dass insbesondere Innensicherungsringe aus einer Aufnahmenut einer Bohrung sicher entfernt werden können.Accordingly, the invention is based on the object of designing a hand tool designed in the manner of expanding pliers in such a way that, in particular, internal locking rings can be safely removed from a receiving groove of a bore.
Die Aufgabe wird erfindungsgemäß zusammen mit den Merkmalen des Oberbegriffes des Anspruchs 1 dadurch gelöst, dass eines der Werkzeugteile relativ zum anderen Werkzeugteil derart relativ zur Aufnahmenut verstellbar ist, dass der mit diesem Werkzeugteil in Eingriff stehende Endabschnitt des Sicherungsringes aus der Aufnahmenut ausgebogen wird, und dass die Werkzeugteile einander zugewandte, bogenförmig verlaufende, seitliche Stützflächen aufweisen, über welche die Werkzeugteile im montierten Zustand der Handhebel gegeneinander schwenkbar und relativ zueinander verstellbar sind, und dass das zweite Werkzeugteil einen vertikal nach oben vorstehenden Lagerzapfen aufweist und dass das erste Werkzeugteil einen nach oben vorstehenden Stellzapfen aufweist und dass ein Stellhebel vorgesehen ist, welcher mit dem Lagerzapfen und dem Stellzapfen derart in Wirkverbindung bringbar ist, dass eine Drehung des Stellhebels um den Lagerzapfen eine Verstellung des Stellzapfens bewirkt, wodurch die relative Verstellung des einen Werkzeugteils relativ zum anderen Werkzeugteil erfolgt..The object is achieved according to the invention together with the features of the preamble of
Durch die erfindungsgemäße Ausgestaltung ist es möglich, zumindest einen Endabschnitt eines in einer Aufnahmenut einer Bohrung sitzenden Sicherungsringes soweit radial aus der Aufnahmenut heraus zu biegen, dass dieser Endbereich axial aus der Aufnahmenut entfernt werden kann.The configuration according to the invention makes it possible to bend at least one end section of a securing ring seated in a receiving groove of a bore radially out of the receiving groove to such an extent that this end region can be axially removed from the receiving groove.
Durch die einander zugewandten, bogenförmig verlaufenden, seitlichen Stützflächen der Werkzeugteile wird eine äußerst einfache Lagerung der beiden Handhebel über deren Werkzeugteile erreicht, welche sowohl ein Verschwenken der beiden Handhebel mit ihren Werkzeugteilen als auch eine relative Verstellbarkeit der Werkzeugteile zulässt. Im montierten Zustand der beiden Handhebel liegen die bogenförmig verlaufenden Stützflächen der Werkzeugteile aneinander, so dass die beiden Werkzeugteile auf Grund des bogenförmigen Verlaufs zusammen mit den Handhebeln gegen einander verschwenkt werden können. Da sich die Stützflächen flächig berühren ist auch gleichzeitig ein Entlanggleiten der einen Stützfläche an der anderen Stützfläche möglich, so dass die Werkzeugteile zusammen mit den Handhebeln auch gleichzeitig in einfacher Weise über die Stützflächen in Richtung der Handhebel verstellt werden können. Sind beide Werkzeugenden der Werkzeugteile in eine Aufnahmenut eines Sicherungsringes eingesetzt, so kann dementsprechend eines der Werkzeugteile relativ zum anderen Werkzeugteil aus der Aufnahmenut im Wesentlichen in radialer Richtung zur Aufnahmenut verstellt werden. Somit ergibt sich durch diese Ausgestaltung eine äußerst einfache dreh- und verstellbare Lagerung der beiden Werkzeugteile.The facing, arcuate, lateral support surfaces of the tool parts achieve an extremely simple mounting of the two hand levers over their tool parts, which allows both a pivoting of the two hand levers with their tool parts and a relative adjustability of the tool parts. In the assembled state of the two hand levers, the curved support surfaces of the tool parts lie against one another, so that the two tool parts can be pivoted against one another together with the hand levers due to the curved shape. Since the support surfaces are in flat contact, the one support surface can simultaneously slide along the other support surface, so that the tool parts together with the hand levers can also be easily adjusted at the same time via the support surfaces in the direction of the hand lever. If both tool ends of the tool parts are inserted into a receiving groove of a securing ring, one of the tool parts can accordingly be adjusted relative to the other tool part from the receiving groove essentially in the radial direction to the receiving groove. This configuration thus results in an extremely simple rotatable and adjustable mounting of the two tool parts.
Die Verstellung der Handhebel wird dabei durch einen zusätzlichen Stellhebel bewirkt, welcher mit den beiden Handhebeln derart in Wirkverbindung steht, dass bei dessen Betätigung die relative Stellbewegung der beiden Werkzeuge zueinander bewirkt wird. Bei dem erfindungsgemäßen Werkzeug ist vorgesehen, dass das zweite Werkzeugteil einen vertikal nach oben vorstehenden Lagerzapfen aufweist und, dass das erste Werkzeugteil einen nach oben vorstehenden Stellzapfen aufweist und, dass der Stellhebel mit dem Lagerzapfen und dem Stellzapfen derart in Wirkverbindung bringbar ist, dass eine Drehung des Stellhebels um den Lagerzapfen eine Verstellung des Stellzapfens bewirkt, wodurch die relative Verstellung des einen Werkzeugteils relativ zum anderen Werkzeugteil erfolgt.The adjustment of the hand lever is effected by an additional adjusting lever, which with the two hand levers is in operative connection in such a way that when it is actuated, the relative adjusting movement of the two tools to one another is effected. In the tool according to the invention it is provided that the second tool part has a vertically upwardly projecting bearing pin and that the first tool part has an upwardly projecting adjusting pin and that the adjusting lever can be brought into operative connection with the bearing pin and the adjusting pin in such a way that rotation of the adjusting lever around the bearing pin causes an adjustment of the adjusting pin, whereby the relative adjustment of one tool part takes place relative to the other tool part.
Durch diese Merkmale können insbesondere große Stellkräfte auf das eine Werkzeugteil ausgeübt werden. Der Stellhebel stützt sich am zweiten (anderen) Werkzeugteil an dessen Lagerzapfen drehbar ab, so dass dieses als Widerlager dient. Wird nun das eine (erste) Werkzeugteil bei Drehung des Stellhebels aus einer Ausgangsstellung in eine Endstellung gebracht, so wird das eine Werkzeugteil zusammen mit dem Endabschnitt des Sicherungsringes, mit welchem das Werkzeugteil in Verbindung steht, unter Verformung des Sicherungsringes aus der Aufnahmenut "gezogen". Dabei stützt sich das andere Werkzeugteil im Nutgrund der Aufnahmenut ab. Je nach Stellweg des Stellhebels kann hier auch eine plastische Verformung des Endabschnittes des Sicherungsringes erreicht werden, so dass nach dem Entfernen der erfindungsgemäßen Spreizzange das nach innen abgebogene Ende des Sicherungsringes mit einer herkömmlichen Zange greifbar ist, so dass der Sicherungsring in einfacher herkömmlicher Weise aus der Aufnahmenut und somit aus der Bohrung entfernt werden kann.Due to these features, in particular large actuating forces can be exerted on one tool part. The adjusting lever is rotatably supported on the second (other) tool part on its bearing pin, so that it serves as an abutment. If one (first) tool part is now brought from an initial position to an end position when the adjusting lever is rotated, one tool part is "pulled" out of the receiving groove together with the end section of the locking ring with which the tool part is connected, deforming the locking ring. . The other tool part is supported in the groove base of the receiving groove. Depending on the travel of the adjusting lever, a plastic deformation of the end section of the locking ring can also be achieved here, so that after removing the expanding pliers according to the invention, the inwardly bent end of the locking ring can be gripped with conventional pliers, so that the locking ring can be easily removed from the Groove and thus can be removed from the bore.
Weitere vorteilhafte Ausgestaltungen sind den Unteransprüchen entnehmbar.Further advantageous refinements can be found in the subclaims.
So kann das zweite Werkzeugteil gemäß Anspruch 2 mit einer Zentrierscheibe versehen sein. Diese Zentrierscheibe ist beispielsweise in einen Lagerring eines durch den Sicherungsring in einer Bohrung gesicherten Wälzlagers einsetzbar, so dass das Ansetzen des Handwerkzeuges im Bereich eines zu demontierenden Sicherungsringes erleichtert wird.For example, the second tool part can be provided with a centering disk. This centering disk can be inserted, for example, in a bearing ring of a roller bearing secured in a bore by the retaining ring, so that the application of the hand tool in the area of a retaining ring to be dismantled is made easier.
Durch die Ausgestaltung gemäß Anspruch 3, wird das erste Werkzeugteil am zweiten Werkzeugteil zwischen der Zentrierscheibe und der Führungsscheibe aufgenommen. Dies erleichtert insbesondere auch das gemeinsame Ansetzen des Handwerkzeuges mit eine beiden Werkzeugteilen in eine Aufnahmenut, da das erste Werkzeugteil durch diese Ausgestaltung insbesondere in einer gemeinsamen Ebene mit dem zweiten Werkzeugteil liegend mit diesem zweiten Werkzeugteil verstellbar in Verbindung steht.Due to the configuration according to
Anhand der Zeichnung wird nachfolgend beispielhaft eine mögliche Ausführungsvariante des erfindungsgemäßen Handwerkzeuges näher erläutert. Es zeigt:
- Fig. 1
- eine perspektivische Explosionsdarstellung zweier Handhebel eines erfindungsgemäßen Handwerkzeuges mit weiteren Montagebauteilen;
- Fig. 2
- eine verkürzte, perspektivische Darstellung eines ersten Handhebels aus
Fig. 1 mit montiertem Stellzapfen; - Fig. 3
- eine verkürzte, perspektivische Darstellung des zweiten Handhebels aus
Fig. 1 mit montiertem Stellzapfen sowie montierter Zentrierscheibe; - Fig. 4
- die Darstellung aus
Fig. 3 des zweiten Handhebels mit zusätzlich montiertem als Führungsscheibe ausgebildetem Führungselement; - Fig. 5
- eine perspektivische Darstellung eines Werkzeugteils mit einer zweiten Ausführungsvariante eines Führungselementes
- Fig. 6
- eine perspektivische, verkürzte Darstellung der beiden Handhebel aus den
Fig. 1 in ihrem zusammengesetzten Zustand ihrer beiden Werkzeugteile;bis 4 - Fig. 7
- eine Draufsicht VI aus
Fig. 6 der beiden Handhebel im Bereich ihrer Werkzeugteile; - Fig. 8
- einen mit den beiden Handhebeln im Bereich der Werkzeugteile in Eingriff bringbaren Stellhebel in perspektivischer Darstellung;
- Fig. 9
- die Darstellung aus
Fig. 6 der beiden Handhebel im Bereich ihrer Werkzeugteile mit aufgesetztem Stellhebel ausFig. 8 ; - Fig. 10
- eine teilweise perspektivische Schnittdarstellung eines Bauteils im Bereich einer Lagerbohrung mit aufgenommenem Wälzlager sowie einem in eine Aufnahmenut eingesetzten Sicherungsring;
- Fig. 11
- die beiden Handhebel aus
Fig. 6 in ihrem am Sicherungsring ausFig. 10 angesetzten Zustand; - Fig. 12
- eine Draufsicht XI des am Sicherungsring angesetzten Handwerkzeuges aus
Fig. 11 ; - Fig. 13
- die Draufsicht aus
Fig. 12 mit auf die beiden Werkzeugteile aufgesetztem Stellhebel; - Fig. 14
- die Darstellung aus
Fig. 13 mit relativ zueinander verstellten Handhebeln; - Fig. 15
- eine Draufsicht einer zweiten Variante eines Werkzeuges, bei welchem mittels des Stellhebels wahlweise einer der beiden Endabschnitte des Sicherungsringes oder beide Endabschnitte des Sicherungsringes radial nach innen gebogen werden können.
- Fig. 1
- a perspective exploded view of two hand levers of a hand tool according to the invention with further assembly components;
- Fig. 2
- an abbreviated, perspective illustration of a first hand lever
Fig. 1 with mounted adjusting pin; - Fig. 3
- a shortened, perspective view of the second hand lever
Fig. 1 with mounted adjusting pin and mounted centering disc; - Fig. 4
- the representation
Fig. 3 of the second hand lever with an additionally mounted guide element designed as a guide disk; - Fig. 5
- a perspective view of a tool part with a second variant of a guide element
- Fig. 6
- a perspective, shortened representation of the two hand levers from the
Figs. 1 to 4 in their assembled state of their two tool parts; - Fig. 7
- a plan view VI
Fig. 6 the two hand levers in the area of their tool parts; - Fig. 8
- an adjusting lever which can be brought into engagement with the two hand levers in the region of the tool parts in a perspective view;
- Fig. 9
- the representation
Fig. 6 of the two hand levers in the area of their tool parts with the adjusting lever attachedFig. 8 ; - Fig. 10
- a partially perspective sectional view of a component in the area of a bearing bore with a received roller bearing and a retaining ring inserted into a receiving groove;
- Fig. 11
- the two hand levers
Fig. 6 in her on the locking ringFig. 10 applied state; - Fig. 12
- a top view XI of the hand tool attached to the locking ring
Fig. 11 ; - Fig. 13
- the top view
Fig. 12 with the adjusting lever placed on the two tool parts; - Fig. 14
- the representation
Fig. 13 with hand levers adjusted relative to one another; - Fig. 15
- a plan view of a second variant of a tool, in which by means of the adjusting lever either one of the two end sections of the locking ring or both end sections of the locking ring can be bent radially inward.
Dieses erste Werkzeugteil 6 weist eine Aufnahmebohrung 7 auf, in welche ein Stellzapfen 8 feststehend einsetzbar ist. Dabei ist die Aufnahmebohrung 7 etwa mittig im ersten Werkzeugteil 6 angeordnet. Im äußeren Endbereich ist das erste Werkzeugteil 6 mit einem klauenartig ausgebildeten Werkzeugende 9 ausgestattet. Im Bereich dieses Werkzeugendes 9 ist das Werkzeugteil 6 in seiner vertikalen Höhe reduziert ausgebildet, so dass dieses in eine Aufnahmenut eines Sicherungsringes einsetzbar ist. Das erste Werkzeugteil 6 weist zum zweiten Handhebel 2 hin eine leicht bogenförmig verlaufende Stützfläche 10 auf, deren Funktion später noch näher erläutert wird.This
Des Weiteren ist aus
Der zweite Handhebel 2 des Handwerkzeuges 3 weist ein zweites Werkzeugteil 15 auf, welches beim dargestellten Ausführungsbeispiel parallel zu einem zweiten Griffteil 16 des zweiten Handhebels 2 verläuft und ebenfalls über einen (vertikalen) Verbindungsabschnitt 17 mit dem zweiten Griffteil 16 feststehend in Verbindung steht. Wie oben zum ersten Handhebel 1 erwähnt, kann der zweite Handhebel 2 auch anders gestaltet sein. Das zweite Werkzeugteil 15 bildet ebenfalls ein Werkzeugende 18, welches ebenfalls hakenförmig ausgebildet ist. Im Bereich dieses Werkzeugendes 18 ist das Werkzeugteil 15 ebenfalls mit einer geringeren Höhe ausgestattet, so dass auch dieses in eine Aufnahmenut eines Sicherungsringes einsetzbar ist. Im Bereich dieses Werkzeugendes 18 bildet das Werkzeugteil 15 ebenfalls eine Eingriffsfläche 19, welche schräg geneigt zur Längsmittelachse 20 des zweiten Werkzeugteils 15 verläuft, wie dies aus der Zeichnung ersichtlich ist.The
Des Weiteren ist aus
Des Weiteren ist in
Die beispielshaft dargestellte, abgewinkelte Ausgestaltung des ersten Handhebels 1 sowie des zweiten Handhebels 2 mit den abgewinkelt verlaufenden Verbindungsabschnitten 5 und 17 ist vorgesehen, um die beiden Werkzeugteile 6 und 15 auch mit einem Sicherungsring in Eingriff bringen zu können, welcher in einer gewissen "Tiefe" in einer Aufnahmenut einer Bohrung eingesetzt ist. So können die beiden Verbindungsabschnitte 5 und 17 auch länger oder kürzer ausgebildet sein.The angled configuration of the
Weiter ist aus
Da das Führungselement in Form der Zentrierscheibe 25, wie dies aus
Aufgrund des bogenförmigen Verlaufs der beiden Stützflächen 10 und 21 sind somit die beiden Handhebel 1 und 2 und somit deren beiden Werkzeugteile 6 und 15 gegeneinander schwenkbar.Due to the arcuate course of the two
Das hier beispielhaft dargestellte Führungselement in Form der Führungsscheibe 32 kann ebenfalls eine andere Außenkontur aufweisen und muss nicht zwingend kreisrund ausgebildet sein. Auch muss diese nicht zwingend mit dem Werkzeugteil 15 verschraubt sein. Hierzu zeigt
Des Weiteren ist aus
Diesen zusammengefügten Zustand der beiden Handhebel 1 und 2 mit ihren Werkzeugteilen 6 und 15 zeigt
Um den ersten Handhebel 1 mit seinem ersten Werkzeugteil 6 entlang der Stützfläche 21 des zweiten Werkzeugteils 15 relativ zum zweiten Handhebel 2 mit geringem Kraftaufwand verstellen zu können, ist ein Stellhebel 50 vorgesehen, welcher in
Der Stellhebel 50 aus
Hierzu zeigt
Da der Stellzapfen 8 feststehend mit dem ersten Werkzeugteil 6 in Eingriff steht, bewegt sich somit der gesamte erste Handhebel 1 mit seinem Werkzeugteil 6 im Wesentlichen in Richtung des Pfeiles 61, so dass das vordere Werkzeugende 9 des ersten Werkzeugteils ebenfalls in diese Richtung relativ zum vorderen Werkzeugende 18 des zweiten Werkzeugteils 15 verstellt wird. Durch diese zusätzliche Verstellung des ersten Werkzeugteils 6 relativ zum zweiten Werkzeugteil 15 in Richtung des Pfeiles 61 kann ein mit dem vorderen Werkzeugende 9 in Eingriff stehender Endabschnitt eines Sicherungsringes sicher aus der Aufnahmenut, in welche dieser eingesetzt ist, heraus gebogen werden. Hierzu zeigt
Wie aus
Der Sicherungsring 70 liegt in der in
Des Weiteren ist aus
Wie aus
Werden nun die beiden Griffteile 4 und 16 der beiden Handhebel 1 und 2 in Richtung der beiden Pfeile 41 und 42 gegeneinander verschwenkt, so vergrößert sich der Abstand der Eingriffsflächen 12 und 19 der beiden vorderen Werkzeugenden 9 und 18, bis beide Eingriffsflächen 12 und 19 an den Stirnflächen 74 und 75 der Endabschnitte 72 und 73 des Sicherungsringes 70 anliegen. Die zu
Diese Eingriffsstellung ist beispielhaft der Draufsicht aus
Nachdem die beiden Handhebel 1 und 2 mit ihren Werkzeugteilen 6 und 15 aus der in
Aus
Dementsprechend bewegt sich auch das vordere Werkzeugende 9 des ersten Werkzeugteils 6 relativ zum vorderen Werkzeugende 18 des zweiten Werkzeugteils 15 in Richtung des Pfeiles 61. Das vordere Werkzeugende 18 des zweiten Werkzeugteils 15 stützt sich dabei im Nutgrund 78 (gestrichelt dargestellt) der in
Aus den
Aus
Ist dieser Endabschnitt 73 in diese radial nach innen ragende Position abgebogen, so kann das erfindungsgemäße Handwerkzeug 3 wieder aus der Eingriffsposition entfernt werden. Damit ist der nach innen gebogene Endabschnitt 73 des Sicherungsringes 70 frei zugänglich, so dass der Sicherungsring 70 mittels einer herkömmlichen Zange durch Greifen dieses Endabschnittes 72 aus der Aufnahmenut demontiert werden kann.If this
In einer weiteren Ausführungsvariante kann auch vorgesehen sein, dass nur oder zum Endabschnitt 72 auch der Endabschnitt 73 des Sicherungsringes 70 aus der Aufnahmenut 71 aus
Hierzu zeigt
Wie aus
Da der der Lagerzapfen 27 bi der Ausführungsvariante nach
Dadurch wird erreicht, dass der Stellhebel 50 aus dieser Ausgangsstellung sowohl in Richtung des Pfeils 60 als auch in entgegengesetzter Richtung in Richtung des Pfeils 62 um den Lagerzapfens 27 drehend verstellt werden kann, ohne dass dieser mit einem der Handhebel 1 oder 2 kollidiert.This ensures that the adjusting
Wird der Stellhebel 50 in Richtung des Pfeils 60 verstellt, so wird der Handhebel 1 zusammen mit seinem Werkzeugteil 6 in Richtung des Pfeils 61 verstellt, wie dies zu den
Wird der Stellhebel 50 aus seiner in
Claims (3)
- A manual tool (3) designed in the manner of a spreader, comprising a first manual lever (1) having a first handle part (4) and a first tool part (6), and a second manual lever (2) having a second handle part (16) and a second tool part (15), which can be pivoted relative to one another, wherein the tool ends (9, 18) of the tool parts (6, 15) are being arranged in a common plane (22) and can be inserted into a receiving groove (71) of a bore (66) of a component (65), such that the tool ends (9, 18) can be brought into engagement with end sections (72, 73), which are spaced from one another in the circumferential direction, of a securing ring (70) arranged in the receiving groove (71) by operating the handle parts (4, 16) of the manual levers (1, 2),
characterized in that
one of the tool parts (6, 15) can be adjusted with respect to the other tool part (15, 6) relative to the receiving groove (71) in such a way that the end section (73, 72) of the securing ring (70) which is engaged with this tool part (6, 15) is bent out of the receiving groove (71),
that the tool parts (6, 15) have arcuate lateral support surfaces (10, 21) facing one another,via which the tool parts (6, 15) can be pivoted and adjusted relative to one another in the assembled state of the manual levers (1, 2) and
that the second tool part (15) comprises a bearing pin (27) protruding vertically upwards, and
that the first tool part (6) comprises an upwardly protruding adjusting pin (8), and
that an adjusting lever (50) is provided, which can be brought into operative connection with the bearing pin (27) and the adjusting pin (8) in such a way that a rotation of the adjusting lever (50) about the bearing pin (27) causes an adjustment of the adjusting pin (8), whereby the relative adjustment of one tool part (6 or 15) takes place relative to the other tool part (6 or 15). - A manual tool according to claim 1, characterized in that the second tool part (15) is provided with a centering disk (25) on the underside with respect to the bore (66).
- A manual tool according to Claim 2, characterized in that the second tool part (15) comprises a guiding element (32) on the upper side of its side facing away from the bore (66), and
that the first tool part (6) can be received in a pivoting and adjustable manner between the guiding element (32) and the centering disc (25).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202015007091.4U DE202015007091U1 (en) | 2015-10-10 | 2015-10-10 | After the manner of a spreader tine trained hand tool |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3153279A1 EP3153279A1 (en) | 2017-04-12 |
EP3153279B1 true EP3153279B1 (en) | 2021-06-02 |
Family
ID=54549178
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16002106.9A Active EP3153279B1 (en) | 2015-10-10 | 2016-09-29 | Hand tool in the form of expanding pliers |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3153279B1 (en) |
DE (1) | DE202015007091U1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108356753A (en) * | 2018-01-23 | 2018-08-03 | 上海博邦汽车技术有限公司 | Unload C circle special vices |
CN110919588A (en) * | 2019-12-05 | 2020-03-27 | 中国航发四川燃气涡轮研究院 | Device for assembling check ring for hole and using method thereof |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2546616A (en) * | 1946-09-26 | 1951-03-27 | Waldes Kohinoor Inc | Tool for handling open-ended spring retaining rings |
DE202006016722U1 (en) * | 2006-11-02 | 2007-01-11 | Klann-Spezial-Werkzeugbau-Gmbh | Circlip pliers for tensioning of spring-elastic circlip has spring-flexible locking element which lies in plane defined by movement path of positive locking elements of operating legs |
DE102012016491A1 (en) | 2012-08-21 | 2013-03-14 | Daimler Ag | Rounded wire circlip used in disassembly kit, for fastening of e.g. gear boxes of motor car, has ring bumper having annular ends whose face surfaces are tapered so that face surfaces are inclined along ring axle of torus-shaped portion |
-
2015
- 2015-10-10 DE DE202015007091.4U patent/DE202015007091U1/en not_active Expired - Lifetime
-
2016
- 2016-09-29 EP EP16002106.9A patent/EP3153279B1/en active Active
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
DE202015007091U1 (en) | 2015-11-03 |
EP3153279A1 (en) | 2017-04-12 |
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