EP0928237B1 - Bolzenschneider - Google Patents
Bolzenschneider Download PDFInfo
- Publication number
- EP0928237B1 EP0928237B1 EP96946357A EP96946357A EP0928237B1 EP 0928237 B1 EP0928237 B1 EP 0928237B1 EP 96946357 A EP96946357 A EP 96946357A EP 96946357 A EP96946357 A EP 96946357A EP 0928237 B1 EP0928237 B1 EP 0928237B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- actuating
- joint
- pivot joint
- lever
- fork
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B17/00—Hand cutting tools, i.e. with the cutting action actuated by muscle power with two jaws which come into abutting contact
- B26B17/02—Hand cutting tools, i.e. with the cutting action actuated by muscle power with two jaws which come into abutting contact with jaws operated indirectly by the handles, e.g. through cams or toggle levers
Definitions
- Bolt cutters are used to make metal rods, namely especially steel rods, to cut or over that Cut off the protruding end sections. This is especially in reinforced concrete construction required to the individual To bring the bars of a steel reinforcement to the correct length, after being finished with a certain excess Reinforcement has been put together and intertwined are.
- structural steel mats which are also usually delivered with a certain excess and on site to the desired final dimension be cut to size. Sometimes with the steel strip mats cutouts can also be made.
- the usual bolt cutters have a cutting head with two cutting jaws side by side in the cutting plane are arranged and by means of an articulated connection are pivotally connected.
- This articulation generally has two connecting lugs of the same type on, parallel to both sides of the cutting jaws are arranged to each other and each at their two ends have a through hole.
- a Articulated bolts inserted through and by suitable securing means secured against falling out. Every cutting jaw has an actuating arm beyond the articulation which is formed in one piece with the cutting jaw, so that each cutting jaw and its actuating arm have one two-armed lever forms.
- each actuating arm With the one turned away from the cutting jaw End section of each actuating arm is by means of a second hinge connection in the form of a hinge joint one end of an operating lever articulated connected.
- the two operating levers are two-armed Lever formed and by means of a third articulation pivotally connected. This articulation is also formed by a hinge joint.
- the joint eye of this joint is on the two operating levers outside of its longitudinal axis on the other operating lever facing side of the relevant operating lever arranged so that the two operating levers at least in the area of the hinge joint with a certain mutual distance run side by side.
- Both Operating levers is yours from the distance between the third articulation and the second articulation resulting first lever arm several times smaller than the length of it from the third hinge itself extending second lever arm or vice versa. If the gripped both actuating levers in the area of their free end and are pivoted relative to each other results from this leverage ratio is on the one hand a correspondingly large one Path reduction and an equal power transmission. This power transmission is further reinforced by the fact that the actuating arms of the cutting jaws in general approximately two to three times as long as the cutting jaws themselves.
- the cutting jaws should be so far in the open position can be spread apart that they have a rod such a thickness can be detected by the bolt cutter can still be cut according to its cutting force can. This results in the given overall transmission ratio a relatively large actuation path and thus a relatively large spread angle, especially in Area of the second lever arm of the operating lever. The complicates the insertion of the bolt cutter into the spatial tight meshes of a fully interwoven reinforcement in order to including those inside the reinforcement mesh To reach reinforcement bars and their protruding end sections to cut off.
- WO-A-93/19880 discloses a bolt and mat cutter with a cutting head and two articulated with it Actuating lever.
- the cutting head has two cutting jaws pivotable with one another by means of a first articulated connection are connected. Each cutting jaw has one piece thus trained actuating arm.
- the two operating levers are bent approximately Z-shaped. Every operating lever is there pivotable by means of a second articulated connection connected to one of the actuating arms.
- the operating levers themselves are by means of a third joint pivotally connected.
- the third is Articulation near the second articulation positioned, with the operating lever parts between the second and third articulations several times are smaller than the remaining free operating lever parts.
- the two operating levers cross each other once, namely at one between the third articulation and the free ends of the operating levers Job. This place changes during opening and Closing movements.
- a disadvantage of this known bolt and mat cutter is that this is still proportionate large spreading angle from the operating lever near the has third articulation. This makes insertion difficult of the tailor in spatially narrow meshes of a ready-woven Reinforcement to include the inside of a reinforcement mesh to reach reinforcement bars and cut off sections there.
- this known construction cutting heads are used of which the cutting jaws and those formed in one piece Actuating arms are as crossing each other educated. Such a cutting head is expensive because it must be specially and precisely manufactured.
- the invention has for its object a bolt cutter to create that at a reinforcement mesh predetermined depth of penetration into smaller meshes or vice versa expressed, with a given mesh size deeper into Reinforcement braid can be introduced to use bars there cut to a thickness corresponding to its cutting force can.
- the floor plan form the Actuating lever appropriately chosen so that Spread of the in the vicinity of the third joint located part of the operating lever in the open position the cutting jaw is smaller than in the closed position.
- the bolt cutter 10 has a cutting head 11 and two actuating levers 12 and 13 for actuating the cutting head 11 on.
- the cutting head 11 is of conventional design and has two cutting jaws 14 and 15 which are in the cutting plane are arranged side by side. You are by means of a first articulated connection 16 pivotally connected to each other. The cutting jaws 14 and 15 sit beyond the articulated connection 16 in an actuating arm 17 and 18 respectively. At the The end section of the actuating arms 17 and 18 is in each case an articulated eye as part of a second joint 19 each available to differentiate in detail as a joint connection 19.1 or articulated connection 19.2 are designated (fig. 1).
- the first articulated connection 16 has two connecting straps 21 and 22, each with two through holes as Articulated eyes are provided. By two in pairs with each other aligned joint eyes, one joint bolt is inserted through each, who is at the same time aligned with something and through hole serving as a hinge eye on each of the extends through both cutting jaws 14 and 15. usual Belay means hold the hinge pin in the hinge eyes firmly.
- the actuating lever 12 is via the second articulated connection 19.1 with the actuating arm 17 of the cutting jaw 14 articulated.
- the operating lever 13 via the second articulation 19.2 with the Actuating arm 18 of the cutting jaw 15 articulated.
- the two operating levers 12 and 13 are two-armed Lever formed by means of a third articulated connection 23 are pivotally connected to one another.
- the second lever arm 26 or 27 of the two actuating levers 12 and 13 several longitudinal sections with different layouts on. These are described below using the second Lever arm 26 of the operating lever 12 explained, the Information in part on the axis of symmetry 30 of the plan projection of the bolt cutter 10 are related (Fig. 1 and Fig. 3).
- Each operating lever points in the area of the third Articulated connection 23 each have an articulated eye 28 or 29 which in individual explained later with reference to FIGS. 4 to 7 become.
- the second lever arm 26 is on the joint eye 28 subsequent first length section 31 bent as a whole or at least has a bend in the plan projection on, so that the floor plan of the subsequent second length section 32 with the axis of symmetry 30 has a smaller crossing angle than the floor plan of the Actuating lever 12 in the area of the articulated eye 28, which also in the plan projection of the first lever arm 24 continues.
- This second length section 32 is straight.
- This is followed by a third length section 33, which then merges into a fourth length section 34.
- the Floor plan projection of the third longitudinal section 33 has two opposite bends 35 and 36, of which the first bend 35 to the axis of symmetry 30 and thus also to Side of the other operating lever 13 is directed.
- the plan projection crosses of the third length section 33, the line of symmetry 30.
- the second bend 36 Appropriately the two bends 35 and 36 chosen so that in the out 1 apparent closed position of the cutting jaws 14th and 15 of the fourth length section 34 at least that End section 37 aligned parallel to line of symmetry 30 is.
- at least the end sections of the two operating levers 12 and 13 in the Closed position have such a large mutual distance, that the operator's hands embracing the end portions of the bolt cutter 10 do not touch each other and in as far as a risk of injury is excluded.
- the second are Length sections 32.1 and 32.2 of the second lever arm the actuating lever 12 and 13 aligned parallel to each other shown what an intermediate position of the operating lever 12 and 13 between the open position and the Corresponds to the closed position.
- the third joint 23 is a fork joint educated.
- the one operating lever, the operating lever 13, has a certain predetermined one in the area of its articulated eye 29 Thickness and there has two parallel flat outer surfaces 38 and 39 on (Fig. 6a).
- the other lever, the Actuating lever 12 is in the area of its articulated eye 28 fork-shaped (Fig. 6b).
- the two fork parts 41 and 42 each have one on the side facing each other flat inner surface 43 and 44, which are parallel to each other are aligned and have a mutual distance, on the thickness of the operating lever 13 in the area thereof Articulated eye 29 is matched.
- the circular cylindrical through hole 45 in the two fork parts 41 and 42 of the hinge eye 28 has at least approximately the same diameter like the through hole 46 in the hinge eye 29 the third hinge pin, not shown in detail Articulated connection 23 matched.
- the two second articulations 19.1 and 19.2 are also designed as a fork joint, the fork parts each on the associated first lever arm of the actuating lever 12 and 13 are arranged.
- the first lever arm closes on the actuating lever 12 24 to the joint eye 28. Because this joint eye is fork-shaped is formed, the lever arm 24 is also in the longitudinal direction divided and has the two lever parts 47 and 48. They are the same distance apart as the fork parts 41 and 42 (Fig. 6b). Your inner surface facing each other is the continuation of the inner surface 43 and 44 of the Fork parts 41 and 42.
- the lever parts 47 and 48 go on its end in a fork part 49 and 50 of the second Articulated connection 19.1 over. These are designed as an articulated eye or have one.
- the parallel to each other aligned inner surfaces of the two fork parts 49 and 50 have a mutual distance based on the thickness of the End portion of the actuating arm 17 of the cutting jaw 14 is coordinated. To simplify production, this is Distance equal to the distance of the inner surface 43 and 44 of the Fork parts 41 and 42 and lever parts 47 and 48.
- the first lever arm closes on the actuating lever 13 25 to the hinge eye 29.
- At the lever arm 25 close two fork parts 51 and 52 as part of the second articulation 19.2 on (Fig. 6a and 71).
- Your parallel to each other aligned flat inner surfaces 53 and 54 have a mutual distance based on the thickness of the end section the actuating arm 18 of the cutting jaw 15 matched is. It is expediently equal to the distance between the inner surfaces 43 and 44 of the fork parts 41 and 42 and also the Fork parts 41 and 50.
- Fig. 2 has two actuating levers 12 and 13 of the bent first length section 31 subsequent part of the second length section 32 in the side elevation projection a side offset 55 or 56 on.
- the two cranks 55 and 56 are oriented in opposite directions.
- Your lateral offset from the cutting plane is greater than half the thickness of the operating levers 12 and 13, so that these in the area without mutual contact can be moved past in their floor plan projection cross each other during the opening and closing movements.
- the advantages of the invention also arise if the cutting head used to cut metal bars 11 replaced by another tool head, such as the pliers for holding workpieces or other Objects or by using scissors to cut softer objects, such as pruning shears or cable shears and the like is the case.
- the invention in also advantageous for medical, veterinary or dental instruments in the form of pliers, cutters or scissors are used in which in a narrowly limited Corresponding work with a certain space Minimum force on the tool head and the actuating hand should be relieved at the same time.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Scissors And Nippers (AREA)
- Harvester Elements (AREA)
Description
- 10
- Bolzenschneider
- 11
- Schneidkopf
- 12
- Betätigungshebel
- 13
- Betätigungshebel
- 14
- Schneidbacken
- 15
- Schneidbacken
- 16
- erste Gelenkverbindung
- 17
- Betätigungsarm
- 18
- Betätigungsarm
- 19
- zweite Gelenkverbindung
- 21
- Verbindungslasche
- 22
- Verbindungslasche
- 23
- dritte Gelenkverbindung
- 24
- erster Hebelarm
- 25
- erster Hebelarm
- 26
- zweiter Hebelarm
- 27
- zweiter Hebelarm
- 28
- Gelenkauge
- 29
- Gelenkauge
- 30
- Symmetrieachse
- 31
- erster Längenabschnitt
- 32
- zweiter Längenabschnitt
- 33
- dritter Längenabschnitt
- 34
- vierter Längenabschnitt
- 35
- Biegung
- 37
- Endabschnitt
- 38
- Aussenfläche
- 39
- Aussenfläche
- 41
- Gabelteil
- 42
- Gabelteil
- 43
- Innenfläche
- 44
- Innenfläche
- 45
- Durchgangsloch
- 46
- Durchgangsloch
- 47
- Hebelteil
- 48
- Hebelteil
- 49
- Gabelteil
- 50
- Gabelteil
- 51
- Gabelteil
- 52
- Gabelteil
- 53
- Innenfläche
- 54
- Innenfläche
- 55
- Kröpfung
- 56
- Kröpfung
Claims (5)
- Bolzen- oder Mattenschneider (10) mit:einem Schneidkopf (11) mit zwei Schneidbacken (14, 15), wobei die Schneidbacken (14, 15) mittels einer ersten Gelenkverbindung (16) schwenkbar miteinander verbunden sind und wobei jeder Schneidbacken (14, 15) jenseits der ersten Gelenkverbindung (16) einen einstückig damit ausgebildeten Betätigungsarm (17, 18) hat; undzwei Betätigungshebeln (12, 13) in form von Griffstangen mit etwa Z-förmig gebogenen Bereichen, wobei die Betätigungshebel (12, 13) je mittels einer zweiten Gelenkverbindung (19.1, 19.2) schwenkbar verbunden sind mit dem vom Schneidbacken (14, 15) abgekehrten Endabschnitten eines jeden Betätigungsarmes (17, 18) und wobei die Betätigungshebel (12 13) mittels einer dritten Gelenkverbindung (23) mit einer Drehwelle schwenkbar miteinander verbunden sind;
wobei die Betätigungshebelteile (24, 25) zwischen dem zweiten und dritten Gelenkverbindungen (19, 23) um ein Mehrfaches kleiner sind als die restierenden freien Betätigungshebelteile (26, 27);
wobei die Grundrißprojektionen der beiden Betätigungshebel (12, 13) einander an einer zwischen der dritten Gelenkverbindung (23) und den freien Enden der Betätigungshebel (12, 13) gelegenen Stelle kreuzen, welche Stelle sich ändert während Öffnungs- und Schließbewegungen;
wobei zumindest diejenige Längenabschnitte (32, 33) der Betätigungshebel (12, 13), deren Grundrißprojektionen bei Öffnungs- und Schließbewegungen einander kreuzen, im Seitenriß außerhalb einander verlaufen; und
wobei die etwa Z-förmig gebogenen Bereiche etwa in einem derartigen Abstand ab der dritten Gelenkverbindung (23) beginnen, der größer ist als das Zweifache der Länge jedes Scheidbackens (14, 15) Betätigungsarmes (17, 18)
dadurch gekennzeichnet daß die Grundrißprojektionen der beiden Betätigungshebel (12, 13) einander ein zweites Mal kreuzen, nämlich in der dritten Gelenkverbindung (23); und daß die Schneidbacken (14, 15) und die damit einstückig ausgebildeten Betätigungsarme (17, 18) nebeneinander angeordnet sind, wobei im geöffneten Zustand der beiden Betätigungsarme (17, 18) die beiden Betätigungshebelteile (24, 25) zwischen zweiter und dritter Gelenkverbindung im Bereich der zweiten, gelenkigen Verbindung (19.1, 19.2) mit den beiden Betätigungshebeln (12, 13) voneinanden gestreitzt sind. - Bolzen- oder Mattenschneider (10) nach Anspruch 1, dadurch gekennzeichnet daß die dritte Gelenkverbindung (23) als Gabelgelenk ausgebildet ist.
- Bolzen- oder Mattenschneider (10) nach Anspruch 2, dadurch gekennzeichnet daß der eine Betätigungshebel (13) im Bereich der dritten Gelenkverbindung (23) ein erstes Gelenkaug (29) mit einer bestimmten vorgegebenen Dicke hat und dort zwei parallele ebene Außenflächen (38, 39) aufweist, weil der andere Betätigungshebel (12) im Bereich der dritten Gelenkverbindung (23) ein zweites Gelenkaug (28) mit zwei Gabelteile (41, 42) hat, welche Gabelteile auf der einander zugekehrten Seiten je eine ebene Innenfläche (43, 44) aufweisen, die parallel zueinander ausgerichtet sind und die einen gegenseitigen Abstand haben, der auf die Dicke des ersten Gelenkauges (29) abgestimmt ist.
- Bolzen- oder Mattenschneider (10) nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet daß die beiden zweiten Gelenkverbindungen (19.1, 19.2) als Gabelgelenke ausgebildet sind.
- Bolzen- oder Mattenschneider (10) nach Anspruch 3 und 4, dadurch gekennzeichnet daß die Gabelteile (49, 50, 51, 52) der beiden zweiten Gelenkverbindungen (19.1, 19.2) an der Betätigungshebel (12, 13) angeordnet sind, wobei diese Gabelteile (49, 50, 51, 52) einstückig auf die dazugehörigen Gabelteilen (38, 39, 41, 42) des Gabelgelenkes der dritten Gelenkverbindung (23) anschließen.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP1996/002151 WO1998004389A1 (de) | 1996-07-22 | 1996-07-22 | Bolzenschneider |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0928237A1 EP0928237A1 (de) | 1999-07-14 |
EP0928237B1 true EP0928237B1 (de) | 2002-04-17 |
Family
ID=8166222
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96946357A Expired - Lifetime EP0928237B1 (de) | 1996-07-22 | 1996-07-22 | Bolzenschneider |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0928237B1 (de) |
AU (1) | AU2765197A (de) |
DE (2) | DE19681565D2 (de) |
WO (1) | WO1998004389A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE406438T1 (de) * | 1999-11-19 | 2008-09-15 | Solvay Pharm Bv | Menschliches homolog aus der familie der metalloproteasen |
DE102004022942B4 (de) | 2004-05-11 | 2019-06-13 | Knipex-Werk C. Gustav Putsch Kg | Zange |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2406670A (en) * | 1944-10-27 | 1946-08-27 | Jose F Delgado | Pruning shears |
DE9204637U1 (de) * | 1992-04-04 | 1992-07-16 | GÖHRIG, Gudrun | Bolzen- oder Mattenschneider |
-
1996
- 1996-07-22 DE DE19681565T patent/DE19681565D2/de not_active Ceased
- 1996-07-22 AU AU27651/97A patent/AU2765197A/en not_active Abandoned
- 1996-07-22 DE DE59609112T patent/DE59609112D1/de not_active Expired - Fee Related
- 1996-07-22 EP EP96946357A patent/EP0928237B1/de not_active Expired - Lifetime
- 1996-07-22 WO PCT/EP1996/002151 patent/WO1998004389A1/de active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
DE59609112D1 (de) | 2002-05-23 |
WO1998004389A1 (de) | 1998-02-05 |
AU2765197A (en) | 1998-02-20 |
EP0928237A1 (de) | 1999-07-14 |
DE19681565D2 (de) | 1999-11-11 |
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