EP1170092A2 - Greifzange mit verstellbarer Maulweite - Google Patents
Greifzange mit verstellbarer Maulweite Download PDFInfo
- Publication number
- EP1170092A2 EP1170092A2 EP01115922A EP01115922A EP1170092A2 EP 1170092 A2 EP1170092 A2 EP 1170092A2 EP 01115922 A EP01115922 A EP 01115922A EP 01115922 A EP01115922 A EP 01115922A EP 1170092 A2 EP1170092 A2 EP 1170092A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- pliers
- locking pin
- bore
- collar
- handle
- 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.)
- Withdrawn
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
- B25B7/06—Joints
- B25B7/10—Joints with adjustable fulcrum
Definitions
- the invention relates to a gripper, as in the preamble of Claim 1 is characterized in more detail.
- the Bearing hole in the area of the pliers handle In the operating area, i.e. in the pressure area of the locking pin, has the Bearing hole in the area of the pliers handle a smaller diameter than the bearing hole in the other area of the forceps handle. So for assembly a stepped hole in the handle, e.g. in the two parallel areas of the forceps handle, be introduced from the side with the larger diameter, from the right in Figure 3. Then the locking pin of the larger bore of the pliers handle through the same size Drilled holes in the pliers bracket into the smaller hole in the pliers handle become. Finally, the intended coil spring is to be preloaded and as Abutment to provide a cover plate, which in turn is on the the latter area of the forceps handle, right in Figure 3, must support.
- cover plate forms a weak point of the forged and tempered pliers:
- the cover plate is expediently made of sheet metal, it is stronger mechanical stresses not growing. Such burdens occur typically when the pliers are used intentionally as a striking tool is misused.
- the pliers can also be used for normal assembly work be subjected to extraordinary shock loads, for example if they accidentally falls from a high height onto hard ground. Finally can cause the forceps to slip under high force during their Intended use to a strong mechanical shock guide the cover plate if the pliers slip to neighboring ones hard components strikes.
- the invention is based on the endeavor to facilitate the manufacture of the pliers and the robustness of the pliers to improve significantly.
- the invention suggests this with a generic pliers in essentially four measures: namely the first, the drilling for the Locking pin in the pliers handle to give a constant diameter to second, the bore from the actuating side of the locking pin bring in, thirdly, to form the bore as a blind hole, and fourth, a press bushing on the actuating side in the bore to introduce, which reduces the diameter of the bore, and the second Area of smaller diameter of the locking pin with radial play.
- the production of the pliers is simplified, since now only one, if possible interrupted by a slot, continuous in diameter constant hole needs to be drilled.
- the assembly of the Pliers are easier because the spring mechanism is easier to insert and close is fix. Because the compression spring can first safely into the with the locking pin Bore to be inserted, then by inserting the new one Press sleeve into the bore of the pliers handle and with play around the thinner one Area of the locking pin in the end position in a quick and safe manner to be biased.
- the mechanical strength of the pliers is significantly increased because of the Pliers handle now made of uniform material, for example from forged and tempered steel.
- the bearing parts and especially the sensitive spring mechanisms are better, namely more robust, shielded that a longer life and service life can be expected.
- the invention enables the locking pin and internal spring to be light and easy quick to remove, for example for cleaning purposes, or to be replaced, for example in the event of damage or wear. For this only the pin needs to be gripped and together with the press bush and the spring to be pulled out. After cleaning, the Assembly takes place, defective parts can be replaced
- the invention achieves all the advantages with the same number of components.
- the press bush can be made of a bearing metal, a sintered material or a high quality, especially slippery and high pressure resistant, Plastic be formed.
- a highly resilient material for the Press bushing will reduce wear on the only free lying storage area achieved.
- the game between a press bush Plastic and the locking pin can be reduced so that a kind Self-sealing of the joint parts against external influences, for example Pollution, is achieved.
- the compression bushing is used as a collar bushing Bearing part and collar trained, so is quick and safe, in particular axially predetermined assembly of the press bush guaranteed.
- the collar bushing can then be rounded off with its collar Fit the pliers handle or, in a pleasing and safe form, full in one Recess in the pliers handle.
- the flange bushing can expand its function even more if the flange has three times the diameter of the bearing part. Then the Bund and Bearing part on the outside have a bulge, which is preferred can be spherical and the thinner region of the locking pin at least partially protective.
- the flange bushing can also be a Note function if they have a signal color or the house color of the Manufacturer has what is particularly in the execution in plastic is easily possible.
- the spring mechanism can preferably be designed so that the Compression spring is designed as a coil spring, which, with one end in a guided central bore of the locking pin, acted upon the locking pin and with the other end is supported on the bottom of the hole.
- FIG. 1 shows a gripper as a so-called water pump pliers in the Top view.
- the gripper 1 comprises a slotted pliers handle 2 and one Pliers bracket 3, each provided with a handle section 4 and 5.
- the Pliers handle 2 and the pliers bracket 3 intersect within the slot 6 in a joint 7, which comprises a locking pin 8 and an elongated locking hole 9.
- At the hinge 7 close to the pliers handle 2 and the pliers bracket 3 each have a gripper jaw 10 and 11, which together form a jaw.
- the slot 6 in the pliers handle 2 is not visible in Figures 1 and 2. He extends in the area and also on both sides of the joint 7. Its front End is designated 6a, its rear end 6b.
- the clamp 3 is inserted through this slot 6 so that the pliers handle 2 the pliers bracket 3rd encompasses on both sides in the area of the joint 7, see also FIG 3.
- the two areas of the pliers handle 2 next to the slot 6 are with 2a and 2b designated.
- FIG. 2 shows the gripping pliers according to FIG. 1 in the bottom view, that is to say from the other side.
- the not visible locking pin 8 indicated by dashed lines.
- the joint 7 corresponds to the section III-III in FIG. 2 shown, but on a somewhat larger scale.
- the one in this area slotted pliers handle 2 has the left area 2a and the right area 2b on.
- the clamp 3 is in the slot 6, between the areas 2a and 2b.
- the locking hole 9 is elongated, namely from one Line up of several cylindrical bores. The centers of the holes are less than one hole diameter offset against each other, so that between the respective holes free passage is, however, smaller than the diameter of the Holes.
- a bore 12 is made in the left region 2a of the pliers handle 2.
- the diameter of this bore 12 corresponds approximately to the diameter of the Bores of the locking hole 9 in the clamp 3.
- the bore 12 settles in right area 2b of the handle 2 with the same diameter as a bore 13 continues so that both holes 12 and 13 are made in one operation can be.
- the bore 13 ends as a blind hole with the bottom 14, so that the right area 2b in the area of the joint 7 is slightly curved outwards, but is completely closed, see Figure 2.
- the locking pin 8 is mounted in the bores 12, 9 and 13.
- the locking pin 8 is as rotationally symmetrical turned part that has an outer rounded, as Has printing surface serving end face 15, to which a relatively thin, with section 16 protruding from part of the left region 2a.
- the section 16 goes over a chamfer 17 into a relatively thick section 18 About, with play in the holes in the elongated hole 9 and in the hole 13th of the right area 2b sits. So much space remains in the bore 13, as the width of the slot 6 or the length of the in the locking hole 7th located relatively thick section 18.
- a blind hole 20 is located from the end face 19 of the section 18 introduced that extends to section 16.
- a helical compression spring 21 is introduced, the one hand on the bottom 22 of the Support the blind hole 20 and on the other hand on the bottom 14 of the bore 13 can.
- the section 16 is supported in the bore 12 by Interposition of a press bush 23:
- the assembly is carried out as follows:
- the clamp 3 is in the slot 6 between the areas 2a and 2b of the Pliers clip 2 inserted until there is a hole in the elongated hole 9 with the Cover holes 12 and 13.
- the helical compression spring 21 is inserted to the bottom 22. Now the locking pin 8 with the chamfered face 19 ahead through the Bores 12, the bore in the elongated hole 9 and in the bore 13 with radial Game are introduced until the helical compression spring 21 on the bottom 14 of the Hole 13 butts.
- the press bush 23 sits with her Inner diameter with play on the section 16 and is with her Outside diameter inserted into the bore 12 under a press fit that the press bush 23 is completely immersed in the bore 12.
- the press bush 23 penetrated to the chamfer 17 and to the slot 6, but not in these penetrated.
- the helical compression spring 21 is biased and presses the Locking pin 8 with the chamfer 17 against the press bush 23, that is, in the shown engagement position of the locking pin 8. Now there is a free space 24 in the Hole 13 is available.
- the joint 7 In the engagement position shown, the joint 7 is in the longitudinal direction of the Locking hole 9 immovable, the locking pin 8 forms the fixed bearing and Swivel axis X - X of the joint 7.
- the adjustment position is reached when the locking pin 8 against the force of Helical compression spring 21 is moved so far that the section 18 from the Locking hole 9 of the clamp 3 in the free space 24 of the bore 13 dips.
- the pliers handle 2 can be opposite the pliers bracket 3 be moved because the thinner section 16 is in the locking hole 9 and can slide through the narrower areas of the locking hole 9. Is the found suitable mouth width, the locking pin 8 is released and together with its thicker section 18 from the helical compression spring 21 back into the shown engagement position shifted and held.
- the compression bush 30 in the upper half of the cut is designed as a collar bush. It consists of a bearing part 31 and a collar 32.
- the collar 32 is in one corresponding recess 33 of the pliers part 34 or fitted.
- the press bush 30 is seated on the outside with a press fit in the bore 35 of the pliers part 34 and. with play on the locking pin 36.
- the press bush 40 in the lower half of the figure 4 is also as Flanged bush formed. It consists of a bearing part 41 and a collar 42.
- the collar 42 has about three times the diameter of the bearing part 41st the free outer side 43, the press bush 40 has a spherical shape Dome 44, which partially surrounds the end of the locking pin 45.
- the Press bushing 40 is seated on the outside with a press fit in the bore 46 of the pliers part 47 and inside with play on the locking pin 45.
- the collar 42 is on the Side surface 48 of the pliers part 47 full. With a rounding 49 the Outside 43 of the press bush 40 into the side surface 48 of the pliers part 47 stepless and seamless.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
Abstract
Description
Claims (11)
- Greifzange mit einem Zangenstiel (2) und einem Zangenbügel (3), die jeweils einen Griffabschnitt (4, 5) und eine dem Griffabschnitt (4, 5) gegenüberliegende Backe (10, 11) aufweisen, wobeia) der Zangenstiel (2) und der Zangenbügel (3) in einem Gelenk (7) zueinander um die Schwenkachse (X - X) schwenkbar gelagert sind,b) das Gelenk (7) eine Eingriffsposition und eine Verstellposition aufweist,c) ein in Richtung der Schwenkachse (X - X) gegen eine Druckfeder (21) manuell koaxial verlagerbarer Raststift (8) zur Einstellung der Eingriffsposition und der Verstellposition vorgesehen ist,d) der Raststift (8) in der Eingriffsposition die Lagerachse des Gelenks (7) bildet,e) der Raststift (8) einen ersten Bereich (18) größeren Durchmessers und einen zweiten Bereich (16) kleineren Durchmessers aufweist,f) der Zangenbügel (3) ein längliches Rastloch (9) aufweist, in dem der Raststift (8) mit seinem ersten Bereich (18) drehbar und unverschiebbar und mit seinem zweiten Bereich (16) in Längsrichtung verschiebbar eingreift undg) der Raststift (8) in einer Bohrung (12, 13) im Zangenstiel (2) gelagert ist und sich über die Druckfeder (21) am Zangenstiel (2) abstützt,
dadurch gekennzeichnet, daßh) die Bohrung (12, 13) im Zangenstiel (2) einen gleichbleibenden Durchmesser aufweist,i) die Bohrung (12, 13) von der Betätigungsseite (B) des Raststiftes (8) her eingebracht ist,j) die Bohrung (12, 13) als Sacklochbohrung (13) ausgebildet ist undk) an der Betätigungsseite (B) in die Bohrung (12) eine Preßbuchse (23) eingebracht ist, die den Durchmesser der Bohrung (12) vermindert, und den zweiten Bereich (16) kleineren Durchmessers des Raststiftes (8) mit radialem Spiel aufnimmt. - Greifzange nach Patentanspruch 1, dadurch gekennzeichnet, daß die Preßbuchse (23, 30, 40) aus einem Lagermetall gebildet ist.
- Greifzange nach Patentanspruch 1, dadurch gekennzeichnet, daß die Preßbuchse (23, 30, 40) aus einem Sintermaterial gebildet ist.
- Greifzange nach Patentanspruch 1, dadurch gekennzeichnet, daß die Preßbuchse (23, 30, 40) aus einem hochdruckfesten Kunststoff gebildet ist.
- Greifzange nach einem der Patentansprüche 1 bis 4, dadurch gekennzeichnet, daß die Preßbuchse (30, 40) als Bundbuchse mit Lagerteil (31, 41) und Bund (32, 42) ausgebildet ist.
- Greifzange nach Patentanspruch 5, dadurch gekennzeichnet, daß der Bund (32) der Bundbuchse (30) in eine Ausnehmung (33) des Zangenstiels (34) eingelassen ist.
- Greifzange nach Patentanspruch 5 oder 6, dadurch gekennzeichnet, daß der Bund (42) der Bundbuchse (40) über eine Abrundung (49) in die Seitenfläche (48) des Zangenstiels (47) übergeht.
- Greifzange nach einem der Patentansprüche 5 bis 7, dadurch gekennzeichnet, daß der Bund (42) der Bundbuchse (40) den zwei- bis dreifachen Durchmesser des Lagerteils (41) aufweist.
- Greifzange nach Patentanspruch 8, dadurch gekennzeichnet, daß Bund (42) und Lagerteil (41) an der Außenseite (43) eine Einwölbung (44) aufweisen.
- Greifzange nach Patentanspruch 9, dadurch gekennzeichnet, daß die Einwölbung (44) kugelförmig ausgebildet ist.
- Greifzange nach einem der Patentansprüche 1 bis 10, dadurch gekennzeichnet, daß die Druckfeder (21) als Schraubenfeder ausgebildet ist, welche, mit einem Ende in einer zentralen Bohrung (20) des Raststiftes (8) geführt, den Raststift (8) beaufschlagt und mit dem anderen Ende sich am Boden (14) der Bohrung (13) abstützt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2000131343 DE10031343A1 (de) | 2000-07-03 | 2000-07-03 | Greifzange mit verstellbarer Maulweite |
DE10031343 | 2000-07-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1170092A2 true EP1170092A2 (de) | 2002-01-09 |
EP1170092A3 EP1170092A3 (de) | 2002-04-03 |
Family
ID=7647008
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01115922A Withdrawn EP1170092A3 (de) | 2000-07-03 | 2001-06-29 | Greifzange mit verstellbarer Maulweite |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1170092A3 (de) |
DE (1) | DE10031343A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1623796A1 (de) * | 2004-08-06 | 2006-02-08 | Eduard Wille GmbH & Co KG | Greifzange |
CN111631777A (zh) * | 2020-06-24 | 2020-09-08 | 李著 | 一种夹持力可调的自锁止血钳及其使用方法 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19634082A1 (de) * | 1996-08-23 | 1998-02-26 | Ver Beckersche Werkzeugfab | Greifzange mit verstellbarer Maulweite |
-
2000
- 2000-07-03 DE DE2000131343 patent/DE10031343A1/de not_active Withdrawn
-
2001
- 2001-06-29 EP EP01115922A patent/EP1170092A3/de not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19634082A1 (de) * | 1996-08-23 | 1998-02-26 | Ver Beckersche Werkzeugfab | Greifzange mit verstellbarer Maulweite |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1623796A1 (de) * | 2004-08-06 | 2006-02-08 | Eduard Wille GmbH & Co KG | Greifzange |
CN111631777A (zh) * | 2020-06-24 | 2020-09-08 | 李著 | 一种夹持力可调的自锁止血钳及其使用方法 |
Also Published As
Publication number | Publication date |
---|---|
EP1170092A3 (de) | 2002-04-03 |
DE10031343A1 (de) | 2002-01-17 |
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