EP0354290A1 - Spannzwinge mit verriegelbarer bewegbarer Backe - Google Patents

Spannzwinge mit verriegelbarer bewegbarer Backe Download PDF

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Publication number
EP0354290A1
EP0354290A1 EP88420276A EP88420276A EP0354290A1 EP 0354290 A1 EP0354290 A1 EP 0354290A1 EP 88420276 A EP88420276 A EP 88420276A EP 88420276 A EP88420276 A EP 88420276A EP 0354290 A1 EP0354290 A1 EP 0354290A1
Authority
EP
European Patent Office
Prior art keywords
rod
boss
movable jaw
light
value
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Withdrawn
Application number
EP88420276A
Other languages
English (en)
French (fr)
Inventor
Jean Paul Valour
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0354290A1 publication Critical patent/EP0354290A1/de
Withdrawn legal-status Critical Current

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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
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/068—Arrangements for positively actuating jaws with at least one jaw sliding along a bar
    • 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
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/10—Arrangements for positively actuating jaws using screws
    • B25B5/102—Arrangements for positively actuating jaws using screws with at least one jaw sliding along a bar

Definitions

  • the invention relates to a clamp of the compound type, as shown in FIG. 1 attached, with a fixed jaw 2 whose foot 2a is secured to a sliding rod 3 and a movable jaw 4 whose foot 4a is crossed by a transverse lumen 5 allowing its sliding on the sliding rod.
  • the movable jaw 4 is provided, opposite the foot 4a, with a sheath 6 receiving clamping means of the type composed of a jack or pump 7 actuable by a threaded rod 8 with operating head 8a.
  • the two joining edges are formed by sharp angles which, resulting from the machining of the light 5, become dull and mat over time, at the same time as the fields of the rod on which they press.
  • surface polishing also known as soaping
  • soaping which promotes untimely sliding of the foot 4a on the rod 3.
  • the self-locking effect is less effective because not guaranteed, and can even disappear, with the risk of causing the loosening of the clamp, this loosening which is very dangerous for the user and leads to the scrap of the clamp.
  • Such loosening can be facilitated by the vibrations of the machine tool on which the part and the joint seal are mounted, by the reactions of the parts or tight members, or by shocks.
  • This boss therefore constitutes a positioning member of the movable jaw but does not improve the reliability of the self-pinching and disturbs the adjustments of this movable jaw.
  • the present invention aims to remedy this by providing a clamp which, of the type in which the movable jaw has a boss cooperating with notches formed in one of the fields of the rod, provides a positive and reliable positioning of the movable jaw, without deterioration of the elements present, while allowing easy and safe movement and positioning of the movable jaw, and this for a low cost price.
  • the two wedging edges are constituted by rounded bosses of radius (r) coming from precise molding with the light, protruding inside the latter, and the distance between their vertices, distance measured in a plane orthogonal to the x′x axis of light, is less than the distance between the bottom of a notch of the rod and the opposite field and has a value such that in the position of use, the pinching angle of the movable jaw relative to the rod is of the order of 88 °, while, on the one hand, the longitudinal faces of light are in planes tangent to the bosses, are inclined, with respect to the longitudinal axis of the light, by the same angle (a) of value between 10 and 16 °, and are separated by a distance equal to the width of the rod increased by a value equal to twice the rolling tolerance affecting this width, and that, on the other hand, the rounded notches formed in the rod have a radius of value (R), greater than that of radius (r)
  • the wedging edges are composed of rounded bosses resistant to matting and whose dimensions and relative positions are determined in relation to the transverse dimensions of the rod and with the length of the foot of the jaw, to give the jaw , a pinch angle favoring the conservation of tightness over time and avoiding the escape of tight objects.
  • the dimensional characteristics of the inclined faces namely inclination and spacing, facilitate, by ergonomic tilting of the jaw, the release of the boss out of the notches, and the sliding of the jaw foot on the rod, without risk of catching the notches following.
  • the small clearance allocated to the sliding is sufficient for the latter, but also makes it possible to better perceive the successive notches and thus facilitate the selection of another notch of the rod.
  • the clamp according to the invention comprises a jaw 2, a rod 3, a movable jaw 4, a sheath 6, a piston 7 actuated by a threaded rod 8 with an operating member 8a.
  • the two overlapping edges formed in the lumen 5 of the foot 4a are constituted by rounded bosses 12 and 13 respectively, of radius r, while the internal field 3a of the rod 3 comprises notches 14 each capable of cooperate with the boss 13 of the foot 4a.
  • the light 5, its bosses 12 and 13, and its inclined faces 15-16 come from precise molding with the foot of the movable jaw, while the rod 13 is constituted by a laminated iron whose notches 14 are punched.
  • the bosses 12 and 13 protrude inside the light 5. Their vertices are separated by a distance (t) which, measured orthogonally to the axis x′x of the light 5, is less than the width (T) separating the bottom of the notches 14 of the opposite field 3b of the rod 3.
  • the relationship between (t) and (T) is defined by a simple calculation taking into account the manufacturing tolerances so that in the clamping position, shown in the FIG. 5, the pinch angle (D), between the longitudinal axis of the rod and the median plane (P1) of the foot of the movable jaw, ie less than 90 ° and of the order of 88 °, more or less 30 minutes, taking into account manufacturing tolerances.
  • the light 5 has longitudinal faces 15 and 16 which, facing the field 3a and 3b of the rod 3, are inclined with respect to its longitudinal axis x′x of the same value (a).
  • This one, between 10 and 16 °, is defined by the calculation taking into account the manufacturing tolerances, so that the distance L, measured perpendicular to these faces, is equal to the width l of the rod 3, increased by twice the tolerance maximum manufacturing for this dimension.
  • the maximum tolerance being + 0.5
  • the increase in L with respect to l is of the order of 1 mm.
  • the inclined faces 15 and 16 are in planes which are tangent to the rounded bosses 12 and 13 from which they are separated by rounded clearance holes 17, the usefulness of which will be specified below.
  • each of the notches 14 of the rod is constituted by a rounded groove of radius (R), of value greater than that (r) of the bosses, and of depth (h) of value less than this value (r).
  • R radius
  • h depth
  • These notches 14 are distributed regularly over the internal field 3a of the rod 3 with a pitch (K) which is less than the stroke (C) of the piston 7 of the clamping means of the movable jaw of the clamp.
  • the grooves 14 are obtained by punching the rod while the latter is in abutment by its field 3b opposite to that punched. Thanks to this, the value of T is precise to within a few hundredths of a millimeter and does not depend on the large manufacturing tolerances of the rod. This manufacturing arrangement makes it possible to obtain the desired functional precision without having to use a machined rod, which is much more expensive.
  • the dimensional values (t), (T) and (L), and the angular one (a), are, regardless of their low manufacturing tolerance, constant in theoretical value and are calculated from the width (l) of the rod and the length (E) of the foot of the movable jaw, that is to say from dimensions which varies t as a function of the length of the jaws and the forces exerted on these.
  • the values (L) and (t) are obtained by the precise positioning of the cores forming the bosses and the inclined faces of the light 5, that is to say by means perfectly mastered and making it possible to obtain details of the order of a few hundredths of a millimeter.
  • the distance T has the value 33 mm, that t 32.5 mm, that L 36 mm, that h is between 1.5 and 2.5 mm and the angle (a) at a value of 13 °.
  • Figures 3 and 5 clearly show that, thanks to the difference in value of the radii R and r, the boss 13 carries well inside the corresponding notch and is articulated effectively therein, that is to say can pivot around its bearing generator without further friction with the concavity of the notch 14.
  • FIG. 5 also shows that the pinch angle D has a value which is of the order of 88 ° so that, during tightening, the bending of the amount of the movable jaw 4 brings this angle, at most, to the value 90 ° which prevents tight objects from escaping from the jaws.
  • the notching produced deep in the internal field of the rod, has a solidity much greater than that of traditional knurling having a depth of only a few tenths of a millimeter. These bosses and notches therefore guarantee the effectiveness of the blocking, whatever the stresses to which the clamp is subjected.
  • this clamp greenhouse with positive locking of its movable jaw provides excellent results, reliable over time for a low manufacturing cost resulting from the only cutting of the notch, while having the same appearance as a greenhouse traditional seal.
  • positive blocking means insensitive to shocks, it provides a confidence of use not found with any other type of clamp allowing instant release by the sole application of a shock on the face 20 of the foot. .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)
EP88420276A 1987-02-19 1988-08-04 Spannzwinge mit verriegelbarer bewegbarer Backe Withdrawn EP0354290A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8702600A FR2611159B1 (fr) 1987-02-19 1987-02-19 Serre-joint a machoire mobile blocable

Publications (1)

Publication Number Publication Date
EP0354290A1 true EP0354290A1 (de) 1990-02-14

Family

ID=9348372

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88420276A Withdrawn EP0354290A1 (de) 1987-02-19 1988-08-04 Spannzwinge mit verriegelbarer bewegbarer Backe

Country Status (2)

Country Link
EP (1) EP0354290A1 (de)
FR (1) FR2611159B1 (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0672837A2 (de) * 1994-01-25 1995-09-20 ROBERT KRAUSE GmbH & CO. KG Klemme zum Festklemmen eines Trägers an einer Platte oder dergleichen
US6024350A (en) * 1997-01-14 2000-02-15 Black & Decker Inc. Clamp for a power tool
EP1314515A2 (de) * 2001-11-22 2003-05-28 Bessey & Sohn GmbH & Co. Bügelzwinge
CN100406203C (zh) * 2005-01-26 2008-07-30 钱小强 可调式g字夹
DE102007031915A1 (de) * 2007-07-09 2009-01-15 Hans-Joachim Maus Schraubzwinge
US7909314B2 (en) * 2007-07-27 2011-03-22 Bessey Tool Gmbh & Co. Kg Device for extending the clamping width for a clamping tool and combination of clamping tool and device for extending the clamping width
CN105050771A (zh) * 2012-12-17 2015-11-11 肯内斯·托马斯 一种夹钳
US20210121996A1 (en) * 2019-10-25 2021-04-29 Kreg Enterprises, Inc. Straight edge guide
CN113200491A (zh) * 2021-04-26 2021-08-03 中国航空油料有限责任公司山东分公司 一种用于试剂封存的广口瓶盖铅封辅助装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112659005A (zh) * 2020-12-25 2021-04-16 辽宁瀚海工业机电设备有限公司 一种可拆卸的f钳

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE57383C (de) * J. WALTER in Ottenau Schraubzwinge
FR687528A (fr) * 1929-03-23 1930-08-09 Fernand Marius Conrozier Perfectionnements aux presses
FR872495A (fr) * 1940-11-20 1942-06-10 Henri Faure & Fils Presse de mécanicien à dégagement rapide du mors mobile et à retour automatique dans sa position d'emploi
GB647454A (en) * 1948-11-03 1950-12-13 C & J Hampton Ltd Improvements in or relating to cramps
FR1529626A (fr) * 1967-02-02 1968-06-21 Pressabois Pressafer & Co Serre-joint
FR2366915A1 (fr) * 1976-10-08 1978-05-05 Hmc Brauer Ltd Serre-joint destine a maintenir une ou plusieurs pieces
US4563921A (en) * 1985-03-05 1986-01-14 John Wallace Compact pliers with large, adjustable jaw span
GB2177647A (en) * 1985-07-12 1987-01-28 Bernard George Verdon Adjustable clamp

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB766545A (en) * 1953-10-24 1957-01-23 Charles Henry Brunt Improvements in or relating to clamping devices
GB863441A (en) * 1958-05-13 1961-03-22 Carver & Co Eng Improvements relating to clamps
US2973792A (en) * 1958-07-21 1961-03-07 William A Fonken General utility clamp means
GB1068115A (en) * 1965-04-15 1967-05-10 Carver & Co Eng Improvements in or relating to clamps
US4078781A (en) * 1976-12-07 1978-03-14 Hmc-Brauer Limited Clamps

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE57383C (de) * J. WALTER in Ottenau Schraubzwinge
FR687528A (fr) * 1929-03-23 1930-08-09 Fernand Marius Conrozier Perfectionnements aux presses
FR872495A (fr) * 1940-11-20 1942-06-10 Henri Faure & Fils Presse de mécanicien à dégagement rapide du mors mobile et à retour automatique dans sa position d'emploi
GB647454A (en) * 1948-11-03 1950-12-13 C & J Hampton Ltd Improvements in or relating to cramps
FR1529626A (fr) * 1967-02-02 1968-06-21 Pressabois Pressafer & Co Serre-joint
FR2366915A1 (fr) * 1976-10-08 1978-05-05 Hmc Brauer Ltd Serre-joint destine a maintenir une ou plusieurs pieces
US4563921A (en) * 1985-03-05 1986-01-14 John Wallace Compact pliers with large, adjustable jaw span
GB2177647A (en) * 1985-07-12 1987-01-28 Bernard George Verdon Adjustable clamp

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0672837A2 (de) * 1994-01-25 1995-09-20 ROBERT KRAUSE GmbH & CO. KG Klemme zum Festklemmen eines Trägers an einer Platte oder dergleichen
EP0672837A3 (de) * 1994-01-25 1996-01-24 Krause Robert Gmbh Co Kg Klemme zum Festklemmen eines Trägers an einer Platte oder dergleichen.
US6024350A (en) * 1997-01-14 2000-02-15 Black & Decker Inc. Clamp for a power tool
EP1314515A2 (de) * 2001-11-22 2003-05-28 Bessey & Sohn GmbH & Co. Bügelzwinge
EP1314515A3 (de) * 2001-11-22 2008-02-20 BESSEY Tool GmbH & Co. KG Bügelzwinge
CN100406203C (zh) * 2005-01-26 2008-07-30 钱小强 可调式g字夹
DE102007031915A1 (de) * 2007-07-09 2009-01-15 Hans-Joachim Maus Schraubzwinge
US7909314B2 (en) * 2007-07-27 2011-03-22 Bessey Tool Gmbh & Co. Kg Device for extending the clamping width for a clamping tool and combination of clamping tool and device for extending the clamping width
CN105050771A (zh) * 2012-12-17 2015-11-11 肯内斯·托马斯 一种夹钳
US20210121996A1 (en) * 2019-10-25 2021-04-29 Kreg Enterprises, Inc. Straight edge guide
CN113200491A (zh) * 2021-04-26 2021-08-03 中国航空油料有限责任公司山东分公司 一种用于试剂封存的广口瓶盖铅封辅助装置
CN113200491B (zh) * 2021-04-26 2022-11-18 中国航空油料有限责任公司山东分公司 一种用于试剂封存的广口瓶盖铅封辅助装置

Also Published As

Publication number Publication date
FR2611159B1 (fr) 1993-05-28
FR2611159A1 (fr) 1988-08-26

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