US20100011546A1 - Clamping device - Google Patents

Clamping device Download PDF

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Publication number
US20100011546A1
US20100011546A1 US12/279,921 US27992107A US2010011546A1 US 20100011546 A1 US20100011546 A1 US 20100011546A1 US 27992107 A US27992107 A US 27992107A US 2010011546 A1 US2010011546 A1 US 2010011546A1
Authority
US
United States
Prior art keywords
base
bolt member
free ends
threaded portion
locking clip
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.)
Abandoned
Application number
US12/279,921
Other languages
English (en)
Inventor
Stephane Gelibert
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.)
A Raymond SARL
Original Assignee
A Raymond SARL
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 A Raymond SARL filed Critical A Raymond SARL
Assigned to A. RAYMOND ET CIE reassignment A. RAYMOND ET CIE ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GELIBERT, STEPHANE
Publication of US20100011546A1 publication Critical patent/US20100011546A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/08—Quickly-detachable or mountable nuts, e.g. consisting of two or more parts; Nuts movable along the bolt after tilting the nut
    • F16B37/0807—Nuts engaged from the end of the bolt, e.g. axially slidable nuts
    • F16B37/0842—Nuts engaged from the end of the bolt, e.g. axially slidable nuts fastened to the threaded bolt with snap-on-action, e.g. push-on nuts for stud bolts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/02—Nuts or like thread-engaging members made of thin sheet material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/005—Nuts or like thread-engaging members into which threads are cut during screwing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/44—Clasp, clip, support-clamp, or required component thereof

Definitions

  • the present invention concerns a clamping device.
  • One known clamping device can be used in assembling a plurality of parts by axial compression, particularly by bolt and nut clamping.
  • the parts are, for example, planar elements in the nature of plates, panels, metal sheets or the like.
  • One class of element that has been known for many years is pincer-shaped nuts, that is, nuts having the general shape of a U and essentially comprising a first branch having a screw socket, connected to a second branch with an opening for the passage of a bolt.
  • the known clamping devices are not completely satisfactory, however, since the retaining means designed to cooperate with the threaded portion of the shank are in the form of screw sockets in which the threads of that portion can engage. To ensure clamping during assembly, it is therefore necessary to tighten the bolt member so that it is translated in a helical movement relative to the locking clip to effect the desired clamping.
  • the mounting and manipulation time required for such assembly is long, especially when the dimensions of the parts to be assembled necessitate more than one clamping device. That time is directly related to the length of the threaded portion and to the relative arrangement of the parts. The significance of this drawback is all the greater since the clamping devices are used in final assembly lines, which are generally the most cost-intensive.
  • the pull-out strength of the bolt member is relatively low, since it is directly related to the mechanical strength of the screw sockets.
  • the latter consist, for example, of rigid tongues punched and stamped from the base, whose free ends are rigidly engaged in the threads of the threaded portion.
  • the present invention provides a clamping device, including a bolt member with a support head and a shank provided with a threaded portion, a locking clip comprising a base equipped with a through-hole for the passage of the shank of the bolt member, and retaining means which are supported by the base so as to be arranged vertically to the through-hole and which are suitable for cooperating with the threaded portion to effect axial immobilization between the bolt member and the locking clip.
  • the present invention provides a clamping device that is of simple and inexpensive design, and which facilitates the assembly operation and increases the reliability of the assembly obtained.
  • the retaining means are constituted by a plurality of flexible and elastic tongues, arranged convergently such that their free ends define between them a gap which is smaller than the nominal diameter of the threaded portion so that they automatically enter into engagement with the threads of the threaded portion when the shank is inserted axially into the through-hole, and by the fact that a burr directed toward the flexible tongues is provided at the periphery of the through-hole to form a stop for the free ends when the shank is axially withdrawn.
  • the present invention provides a clamping device including a bolt member with a support head and a shank provided with a threaded portion, a locking clip including a base equipped with a through-hole for the passage of the shank of the bolt member, and retaining means which are supported by the base so as to be arranged vertically to the through-hole and which are suitable for cooperating with the threaded portion to effect axial immobilization between the bolt member and the locking clip, a burr provided at the periphery of the through-hole, characterized in that the retaining means are formed by a plurality of flexible and elastic tongues, arranged convergently such that their free ends define between them a gap (d) which is smaller than the nominal diameter of the threaded portion so that they automatically enter into engagement with the threads of the threaded portion when the shank is inserted axially into the through-hole, and in that the burr is directed toward the flexible tongues to form a stop for the free ends when the shank is withdrawn axially
  • FIG. 1 is a perspective view of the locking clip in a first exemplary embodiment of the clamping device according to the invention
  • FIG. 2 is a longitudinal sectional view of the locking clip from FIG. 1 ;
  • FIG. 3 is a perspective view of the first exemplary clamping device, showing a planar element to be assembled and the locking clip in cross section;
  • FIG. 4 is a perspective view of the locking clip in a second exemplary embodiment of the clamping device according to the invention.
  • FIG. 5 is a perspective view of the locking clip in a third exemplary embodiment of the clamping device according to the invention.
  • FIG. 6 is a perspective view of the locking clip in a fourth exemplary embodiment of the clamping device according to the invention.
  • FIGS. 1 to 3 illustrate a first exemplary clamping device according to the invention, composed of a locking clip 10 and a bolt member 11 .
  • the bolt member 11 which is made of metal, for example, and is visible only in FIG. 3 , comprises a partially threaded shank 12 and, at the so-called proximal end, a support head 13 .
  • the shank 12 has a smooth upper portion 14 located close to the support head 13 and a threaded lower portion 15 extending to the opposite end, referred to as the distal end.
  • the locking clip 10 is configured as a straddle member having the general shape of a U, with substantially parallel first and second branches 16 , 17 .
  • the locking clip 10 is fabricated by being cut from a metal plate and bent.
  • clamping device will now be described in a specific but in no way limitative application example, consisting of the assembly of planar elements in the nature of plates, panels, metal sheets or the like. It goes without saying, however, that the clamping device can be used more generally in all applications requiring the use of a bolt and nut type system.
  • one of the planar elements to be assembled is designed to be placed between the branches 16 , 17 of the locking clip 10 .
  • the other planar element or elements of the assembly are not shown.
  • Branches 16 , 17 can exhibit a slight convergence so that the locking clip 10 can be premounted and affixed to the planar element 18 prior to the final assembly operation executed in cooperation with bolt member 11 .
  • First branch 16 and second branch 17 each have respective through-holes, referenced 19 , 20 , for the passage of the shank 12 of bolt member 11 .
  • First branch 16 terminates in an outwardly bent portion 24 designed to facilitate the placement of the locking clip 10 on the planar element 18 .
  • second branch 17 constitutes a base, noted 21 , supporting two flexible and elastic tongues 22 , 23 disposed, relative to the base 21 , on the opposite side from first branch 16 .
  • the flexible tongues 22 , 23 are arranged to be convergent, such that their free ends, respectively referenced 221 , 231 , are situated vertically to the through-hole 20 and define between them a gap, noted d, which is smaller than the nominal diameter of the threaded portion 15 .
  • Each free end 221 , 231 presents a circular hollow-out portion whose diameter corresponds to the inner diameter of the threading forming threaded portion 15 .
  • the opposite ends 222 , 232 of the flexible tongues 22 , 23 from the free ends 221 , 231 are each integral to a respective connecting arm 25 , 26 connected to the base 21 by a portion 27 bent back 1800 , constituting an elastically deformable region.
  • the connecting arms 25 , 26 are perpendicular to their respective flexible tongues 22 , 23 .
  • flexible tongues 22 , 23 and connecting arms 25 , 26 are therefore coplanar, and are parallel to the base 21 .
  • Connecting arms 25 , 26 are connected to each other by a stiffener 28 , which is straight in the example.
  • the locking clip 10 is first premounted and attached to the planar element 18 .
  • the other planar element or elements that are to be assembled with element 18 are then superposed and are positioned against the first branch 16 or near it, outside the locking clip 10 .
  • Each planar element is provided with an opening designed to be traversed axially by the shank 12 .
  • the planar elements can each be integral to a respective part of any desired shape, said parts (not shown) being designed to be assembled to one another in a region where the planar elements are superposed and can be assembled by clamping.
  • the shank 12 of the bolt member 11 is then inserted into the openings in the planar elements to be assembled with element 18 , proceeding from the distal end toward the proximal end, then into through-hole 19 , then through planar element 18 , then into through-hole 20 , until coming into contact with the free ends 221 , 231 of the flexible tongues 22 , 23 .
  • the axial insertion of the shank 12 into the locking clip 10 then causes the flexible tongues 22 , 23 to flex in such a way that their free ends 221 , 231 move axially away from through-hole 20 of base 21 .
  • the axial immobilization serves to clamp planar element 18 together with the other planar element or elements, and thus to assemble them.
  • the operator then need only tighten bolt member 11 slightly to a desired tightening torque.
  • the assembly of the planar elements 18 and other elements is performed, first, merely by exerting axial pressure on the bolt member 11 relative to the locking clip 10 , and then, optionally, by tightening the bolt member 11 slightly. This feature facilitates assembly by virtue of the fast, simple manipulation of the bolt member 11 .
  • the locking clip 10 and the bolt member 11 can be made from other suitable materials, varying with the application, such as molded plastic, for example.
  • the number of flexible tongues 22 , 23 can also vary with the application, based, for example, on the constituent material of the locking clip 10 and/or the desired rigidity during the axial insertion of the bolt member 11 and/or the sought pull-out strength.
  • FIGS. 4 and 5 respectively illustrate the locking clips 30 and 40 in two other exemplary embodiments of the clamping device according to the invention, usable in different applications.
  • Locking clip 30 ( FIG. 4 ) differs from locking clip 10 by the fact that first branch 16 has been eliminated.
  • the manner of operation of the base 21 and the flexible tongues 22 , 23 remains the same, however.
  • Extending from one edge of the base 21 is a fixing flap 31 suitable for insertion in a mating receptacle provided in a first part to be clamped against a second part held in place by support head 13 .
  • the first and second parts are formed, for example, by the two articulated half-bores of a pipe clamp.
  • Locking clip 40 differs from locking clip 30 by the fact that the fixing flap 31 has been eliminated and the base 21 has larger dimensions in at least one of the directions, to be able to accommodate a plurality of fixing holes 41 .
  • the fixing holes 41 make it possible, for example, to overmold one of the parts to be clamped onto locking clip 40 , or to affix the clip to one of the parts to be clamped by means of bolts or screws.
  • FIG. 6 illustrates the locking clip 50 in a fourth exemplary embodiment of the clamping device according to the invention.
  • Locking clip 50 differs from locking clip 30 by the fact that the connecting arms 25 , 26 extend beyond their junction with the opposite ends 222 , 232 of the flexible tongues 22 , 23 .
  • the free ends 251 , 261 of the connecting arms i.e., the opposite ends from those connected to the base 21 , are connected to each other by a stiffener 51 .
  • the connecting arms 25 , 26 and the stiffeners 28 , 51 form a stiffening frame designed to eliminate any possibility of radial movement by free ends 221 , 231 other than that caused by the flexion of flexible tongues 22 , 23 during the insertion of bolt member 11 . This feature increases both the pull-out strength of the bolt member 11 and the torque strength of the locking clip 50 .

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)
  • Insertion Pins And Rivets (AREA)
US12/279,921 2006-04-10 2007-03-08 Clamping device Abandoned US20100011546A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0603152A FR2899658B1 (fr) 2006-04-10 2006-04-10 Dispositif de serrage
FR06/03152 2006-04-10
PCT/EP2007/002001 WO2007115622A1 (fr) 2006-04-10 2007-03-08 Dispositif de serrage

Publications (1)

Publication Number Publication Date
US20100011546A1 true US20100011546A1 (en) 2010-01-21

Family

ID=37434001

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/279,921 Abandoned US20100011546A1 (en) 2006-04-10 2007-03-08 Clamping device

Country Status (10)

Country Link
US (1) US20100011546A1 (pt)
EP (1) EP2007991B1 (pt)
CN (1) CN101405511A (pt)
BR (1) BRPI0710594B8 (pt)
CA (1) CA2646690C (pt)
CY (1) CY1117787T1 (pt)
ES (1) ES2582487T3 (pt)
FR (1) FR2899658B1 (pt)
PL (1) PL2007991T3 (pt)
WO (1) WO2007115622A1 (pt)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9746018B2 (en) 2015-02-02 2017-08-29 Denso International America, Inc. Speed nut
WO2020033497A1 (en) * 2018-08-07 2020-02-13 Ideal Clamp Products, Inc. Retainer for clamp assembly

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103321999A (zh) * 2012-03-23 2013-09-25 冠捷投资有限公司 锁固结构与物件的组合装置及该锁固结构
US8979456B2 (en) * 2013-01-18 2015-03-17 GM Global Technology Operations LLC Retention clip assembly
CN103398075A (zh) * 2013-08-05 2013-11-20 无锡市张泾宇钢机械厂 螺钉的预紧弹片
EP3117112B1 (de) * 2014-03-12 2019-12-11 Rittal GmbH & Co. KG Befestigungssystem zum montieren von geräten, insbesondere elektrogeräten
CN105570253A (zh) * 2014-10-16 2016-05-11 重庆玛格装饰建材有限公司 紧固装置
CN104930037B (zh) * 2015-06-18 2017-01-18 嘉兴汉工汽车紧固件有限公司 自攻钉螺母座和应用其的可拆卸组件以及加工工艺
CN105480172B (zh) * 2016-01-07 2017-09-05 安徽江淮汽车集团股份有限公司 线夹
DE102019121911A1 (de) * 2019-08-14 2021-02-18 Illinois Tool Works Inc. Bolzenbefestigung

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2239797A (en) * 1936-10-01 1941-04-29 Tinnerman Products Inc Spring fastener
US2373312A (en) * 1943-06-11 1945-04-10 Orlin F Goudy Fastener
US2407608A (en) * 1942-11-28 1946-09-10 Tinnerman Products Inc Fastening device
US2427392A (en) * 1944-11-25 1947-09-16 Oliver C Eckel Clip
US2560518A (en) * 1947-03-05 1951-07-10 United Carr Fastener Corp Friction nut
US3123880A (en) * 1964-03-10 Clip-on receptacle or socket member for one-quarter turn stud
US3491820A (en) * 1968-05-29 1970-01-27 Modular Syst Flexible joint structure and clips therefor
US3841196A (en) * 1972-10-31 1974-10-15 G Tinnerman Quick-acting clamp
US4508477A (en) * 1982-09-30 1985-04-02 Eaton Corporation Fastening device
US4826375A (en) * 1987-08-17 1989-05-02 Eaton Corporation Variable diameter screw fastener
US7645107B2 (en) * 2005-04-28 2010-01-12 Piolax Inc. Push nut

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB657161A (en) * 1948-01-28 1951-09-12 Tinnerman Products Inc Improvements relating to sheet metal fasteners
FR2754575B1 (fr) * 1996-10-10 1998-11-27 Rapid Sa Ecrou formant pince pour l'assemblage de panneaux, toles ou analogues

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3123880A (en) * 1964-03-10 Clip-on receptacle or socket member for one-quarter turn stud
US2239797A (en) * 1936-10-01 1941-04-29 Tinnerman Products Inc Spring fastener
US2407608A (en) * 1942-11-28 1946-09-10 Tinnerman Products Inc Fastening device
US2373312A (en) * 1943-06-11 1945-04-10 Orlin F Goudy Fastener
US2427392A (en) * 1944-11-25 1947-09-16 Oliver C Eckel Clip
US2560518A (en) * 1947-03-05 1951-07-10 United Carr Fastener Corp Friction nut
US3491820A (en) * 1968-05-29 1970-01-27 Modular Syst Flexible joint structure and clips therefor
US3841196A (en) * 1972-10-31 1974-10-15 G Tinnerman Quick-acting clamp
US4508477A (en) * 1982-09-30 1985-04-02 Eaton Corporation Fastening device
US4826375A (en) * 1987-08-17 1989-05-02 Eaton Corporation Variable diameter screw fastener
US7645107B2 (en) * 2005-04-28 2010-01-12 Piolax Inc. Push nut

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9746018B2 (en) 2015-02-02 2017-08-29 Denso International America, Inc. Speed nut
WO2020033497A1 (en) * 2018-08-07 2020-02-13 Ideal Clamp Products, Inc. Retainer for clamp assembly
US11920710B2 (en) 2018-08-07 2024-03-05 Ideal Clamp Products, Inc. Retainer for clamp assembly
US20240200690A1 (en) * 2018-08-07 2024-06-20 Ideal Clamp Products, Inc. Retainer for clamp assembly

Also Published As

Publication number Publication date
FR2899658A1 (fr) 2007-10-12
PL2007991T3 (pl) 2016-11-30
BRPI0710594B8 (pt) 2019-01-22
CN101405511A (zh) 2009-04-08
CA2646690A1 (en) 2007-10-18
ES2582487T3 (es) 2016-09-13
WO2007115622A1 (fr) 2007-10-18
BRPI0710594B1 (pt) 2018-04-24
EP2007991A1 (fr) 2008-12-31
BRPI0710594A2 (pt) 2011-08-16
EP2007991B1 (fr) 2016-05-11
CY1117787T1 (el) 2017-05-17
CA2646690C (en) 2012-05-22
FR2899658B1 (fr) 2010-08-27

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Legal Events

Date Code Title Description
AS Assignment

Owner name: A. RAYMOND ET CIE,FRANCE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:GELIBERT, STEPHANE;REEL/FRAME:021409/0262

Effective date: 20080728

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION