EP0477814B1 - Tête de compression sans matrice et méthode de sertissage - Google Patents

Tête de compression sans matrice et méthode de sertissage Download PDF

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Publication number
EP0477814B1
EP0477814B1 EP91116128A EP91116128A EP0477814B1 EP 0477814 B1 EP0477814 B1 EP 0477814B1 EP 91116128 A EP91116128 A EP 91116128A EP 91116128 A EP91116128 A EP 91116128A EP 0477814 B1 EP0477814 B1 EP 0477814B1
Authority
EP
European Patent Office
Prior art keywords
ram
anvil
tool
angled
connector
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
Application number
EP91116128A
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German (de)
English (en)
Other versions
EP0477814A3 (en
EP0477814A2 (fr
Inventor
Neil P. Ferraro
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.)
FCI USA LLC
Original Assignee
Burndy Corp
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Filing date
Publication date
Application filed by Burndy Corp filed Critical Burndy Corp
Publication of EP0477814A2 publication Critical patent/EP0477814A2/fr
Publication of EP0477814A3 publication Critical patent/EP0477814A3/en
Application granted granted Critical
Publication of EP0477814B1 publication Critical patent/EP0477814B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/042—Hand tools for crimping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool

Definitions

  • the present invention relates to an electrical connector crimping tool and to a method of crimping an electrical connector according to the preambles of the independent claims.
  • a tool and such a method are known from US 3 619 885. More particularly, the invention relates to a dieless compression head and a method of crimping electrical connectors onto conductors.
  • dieless compression heads also known as universal compression heads
  • universal compression heads have been known and used in the past to crimp a variety of size connectors and conductors
  • a problem nonetheless existed in the prior art in that the universal compression heads were unable to crimp all sizes of connectors and conductors with the same degree of quality.
  • the front of the indentor needs to be broad to prevent the indentor from inadvertently piercing through the connector rather than properly compressing the connector.
  • the front of the indentor should be narrow such that the indentor can indent the connector and not merely flatten the connector which would not produce a good crimp.
  • the prior art universal compression heads have been unable to adequately support both of these divergent requirements and provide the same type of quality connections for a full range of connectors and conductors sizes.
  • US 3 619 885 discloses a variable diameter crimping tool. It comprises a frame supporting an anvil and a ram movably mounted to the frame.
  • the ram has a front part having angled sides. The anvil and the angled sides of the ram are adapted to matingly contact each other when the ram is advanced into contact with the anvil.
  • the indenting extension may have a general pyramide shape.
  • the second portion forms a leading tip of the ram and the first portion is located longitudinally behind the second portion.
  • the anvil is connected to the frame and has two angled sides adapted to be matingly contacted by the ram first portion angled sides when the ram is advanced into contact with the anvil.
  • the means for moving the ram can move the ram relative to the anvil to crimp an electrical connector therebetween.
  • a method of crimping an electrical connector to a conductor includes providing a compression tool having a compression head with an anvil surface, a ram with an indenting surface extending from a not completely occupied flat section of a forward portion of the ram and having a general pyramid shape, and means for stopping forward movement of the ram at a predetermined distance of the top of the pyramid shape from the anvil.
  • the means for stopping forward movement comprises the forward portion of the ram, located behind the pyramid shape, being adapted to contact the anvil surface and stop forward movement of the ram.
  • the method further comprises advancing the ram from a first position into contact with an exterior of a connector, the connector being sandwiched between the ram and the anvil; deforming the connector by advancing the ram past its contact position with the connector; and stopping the forward advancement of the ram upon the occurrence of a predetermined force between the ram and anvil.
  • the predetermined force can occur either directly between the ram and anvil at the means for stopping movement when crimping a connector and conductor of a first size or, the predetermined force can occur between the ram and anvil through the connector when crimping a connector and conductor of a second relatively larger size.
  • Fig. 1 is a plan side view of a hydraulic compression tool incorporating features of the present invention.
  • Fig. 2 is a partial schematic cross sectional view of the compression head of the tool shown in Fig. 1 with the ram at a first position.
  • Fig. 3 is a schematic cross sectional view of the compression head as in Fig. 2 with the ram at a second position.
  • Fig. 4 is a side view of the front of the ram shown in Figs. 1 thru 3.
  • Fig. 5 is a plan top view of the ram shown in Fig. 4.
  • Fig. 6 is a partial perspective view of the front of the ram shown in Fig. 5.
  • FIG. 1 there is shown a plan side view of a hydraulic compression tool 2 incorporating features of the present invention.
  • the tool 2 generally comprises a first handle 4 having a fluid reservoir therein, a second handle 6, a body 10, and a compression head 12.
  • a hydraulic compression tool it should be understood that the invention can be incorporated into any suitable type of compression apparatus or crimping tool.
  • any suitable size, shape, or type of materials can be used.
  • the hydraulic compression tool 2 shown in Fig. 1, with the exception of its compression head 12, is essentially identical to the hydraulic compression tool shown and described in U.S. Patent 4,947,672 to Pecora et al. which is hereby incorporated by reference herein in its entirety.
  • the compression head 12 generally comprises a cylinder body or frame 14 having a hydraulic cylinder therein, and an indentor or ram 16 movably mounted to the frame.
  • an anvil 18 Connected to the cylinder body or frame 14 is an anvil 18.
  • the anvil 18 is connected to the frame 14 by two pins 19 and 20.
  • the second pin 20 is removable from the anvil 18 such that the anvil can pivot at pin 19 to open an area 22 intended to receive a connector.
  • the anvil 18 is generally comprised of metal with a center section 24 and two end sections 26 and 27 having slots 28 and 29 for receiving forward legs 30 and 31 of the frame 14 such that the pins 19 and 20 can fixedly mount the anvil 18 to the frame 14.
  • the interior side of the center section 24, adjacent area 22, generally forms the anvil surface 25 of the tool 2 for contacting the exterior of a connector.
  • the anvil surface 25 includes two angled side portions or surfaces 32 and 33 with a center flat portion 34 therebtween at the center of the anvil 18.
  • the two angled side portions 32 and 33 are angled about 75 degrees relative to each other.
  • any suitable type of angle or shape of the anvil surface 25 can be provided as further described below.
  • the ram or indentor 16 is generally comprised of metal with a rear section (not shown) that is capable of being pushed forward by hydraulic fluid to advance the indentor 16 relative to the frame 14 and anvil 18. As described above, the ram 16 is movably mounted to the frame 14 for movement towards and away from the anvil 18.
  • the front 36 of the ram 16 is generally comprised of two portions or sections; a pyramid section 38 forming the leading edge to the ram, and an angled side section 40 located longitudinally behind the pyramid section 38.
  • the pyramid section 38 is comprised of a single four sided pyramid 39 with a flat top 42, base 44 and sides 45, 46, 47, 48.
  • the first two opposite sides 45 and 46 are angled relative to each other at an angle of about 109 degrees.
  • any suitable angle can be provide as further described below.
  • extending from the base 44 at opposite sides 47 and 48 of the pyramid 39 are two flat sections 50 and 51.
  • Extending from the base 44 from sides 45 and 46 of the pyramid are two angled surfaces 52 and 53 that form the angled side section 40 of the indentor 16.
  • the surfaces 52 and 53 have an angle of about 75 degrees relative to each other.
  • the angle of the ram angled surfaces 52 and 53 is the same as the angle of the anvil angled contact surfaces 32 and 33.
  • the indentor 16 has a potential range of motion from a home position as shown in Fig. 2 through to its end of range of motion at a fully extended position as shown in Fig. 3.
  • the angled surfaces 52 and 53 of the ram side section 40 matingly contacts the angled contact surfaces 32 and 33 of the anvil 18.
  • the ram 16 is prevented from further advancement.
  • the pyramid section 38 is suitably sized and shaped such that when the indentor 16 is moved to its fully extended position, the pyramid 39 is spaced from the anvil and has a spacing A between the anvil center portion 34 and the pyramid's top 42.
  • the spacing A is about 0.26 inch. However, any suitable spacing could be provided.
  • the novel configuration of the ram front 36 and anvil surface 25 allows the tool 2 the ability to crimp connectors onto conductors for both relatively large connectors and relatively small connectors, without significant crimp quality variation.
  • the ram 16 is advanced by pumping the handles 4 and 6 until the connector is sandwiched in area 22 between the ram front 36 and anvil surface 25.
  • the handles 4 and 6 are further pumped with the ram 16 advancing and deforming the connector with the conductor.
  • the pyramid 39 presses into the connector without piercing the connector.
  • the flat sections 50 and 51 contact the connector to increase the area of the ram front that is in compressing contact with the connector.
  • the connector is merely crimped between the pyramid 39 and anvil 18.
  • the depth of the crimp into the small connector is controlled by the spacing A.
  • the pressure in the hydraulic system of the tool 2 never reaches its blow off pressure to stop crimping until the ram 16 contacts the anvil 18.
  • the pyramid due to its relatively modestly sloped sides 45 and 46 and its height, does not contact the anvil 18, thus establishing a predetermined spacing between the pyramid and anvil surface for a predetermined crimp and shape.
  • the tool 2 blows off on pressure, not travel distance.
  • the tool 2 is capable of crimping range taking connectors.
  • the ram 16 can obviously advance even after the flat area 50 and 51 contact the connector until such time as the connector is suitably crimped onto the conductor with suitable pressure.
  • the anvil surface 25 has been described above as a wedge shape with two flat angled surfaces 32 and 33 with a flat section 34 therebetween, it should be understood that any suitably shaped anvil surface could be provided including curved surfaces and stepped surfaces.
  • the anvil angled surfaces can have any suitable angled so long as the pyramid 39 is suitably sized and shaped to be spaced from the anvil surface 25 at the ram's fully extended position.
  • the means for stopping the forward advancement of the ram 16 has been described as the abutment of the ram angled surfaces 52 and 53 meeting the anvil surfaces 32 and 33, it should be understood that any suitable means could be used to stop the advancement of the ram 16 at its fully extended position.
  • the pyramid 39 has been described as a four sided pyramid with a flat top, any suitably shaped extension at the leading edge of the ram could be provided and the term pyramid used herein should be interpreted as such.
  • the indenting extension or pyramid 39 could also be provided on the anvil surface 25 or could be provided as multiple pyramids.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Claims (16)

  1. Outil de sertissage de connecteur électrique, comprenant:
       un bâti (14);
       un poussoir (16) monté de façon mobile sur le bâti (14), le poussoir (16) possédant une partie antérieure (36) dotée d'une première partie (40) qui possède deux surfaces inclinées (52, 53) enfermant entre elles une section plate (50, 51);
       un contre-poussoir (18) relié au bâti (14), le contre-poussoir (18) ayant deux côtés inclinés (32, 33) qui sont destinés à recevoir le contact, de façon concordante, des côtés inclinés (52, 53) de la première partie (40) du poussoir lorsque le poussoir (16) se déplace vers l'avant jusqu'à venir en contact avec le contre-poussoir (18); et
       un moyen servant à déplacer le poussoir (16) par rapport au contre-poussoir (18) de façon à sertir un connecteur électrique entre eux,
       caractérisé en ce que :
       la partie antérieure (36) possède une deuxième partie (38) comportant un prolongement d'enfoncement, la deuxième partie (38) formant un bord antérieur du poussoir (16) et la première partie (40) étant disposée longitudinalement en arrière de la deuxième partie (38), le prolongement d'enfoncement faisant saillie de la section plate (50, 51) de la première partie (40), de sorte que la section plate (50, 51) n'est pas complètement occupée par la deuxième partie (38).
  2. Outil selon la revendication 1, caractérisé en ce que la première partie (40) et la deuxième partie (38) du poussoir (16) sont dimensionnées et conformées de manière appropriée de façon que le contact des côtés inclinés (52, 53) de la première partie avec les côtés inclinés (32, 33) du contre-poussoir arrête le déplacement vers l'avant du poussoir (16) alors que la deuxième partie (38) est encore écartée d'une distance prédéterminée vis-à-vis du contre-poussoir (18).
  3. Outil selon la revendication 2, caractérisé en ce que la distance prédéterminée est d'environ 6,6 mm (0,26 pouce).
  4. Outil selon la revendication 1, caractérisé en ce que le prolongement d'enfoncement possède une partie supérieure plate (42).
  5. Outil selon la revendication 1, caractérisé en ce que le prolongement d'enfoncement est une forme sensiblement pyramidale à quatre côtés.
  6. Outil selon la revendication 5, caractérisé en ce que la partie antérieure (36) du poussoir possède deux sections latérales plates qui se prolongent de la base de la forme pyramidale.
  7. Outil selon la revendication 6, caractérisé en ce que les deux côtés inclinés (52, 53) du poussoir se prolongent de la base de la forme pyramidale.
  8. Outil selon la revendication 1, caractérisé en ce que le contre-poussoir (18) possède une section supérieure plate (34) entre ses deux côtés inclinés (32, 33).
  9. Outil selon la revendication 1, caractérisé en ce que le prolongement d'enfoncement possède une forme pyramidale se trouvant en avant des deux parties latérales inclinées, la forme pyramidale (38) étant dimensionnée de manière appropriée de façon à ne pas se trouver en contact avec le contre-poussoir (18) lorsque les parties latérales (52, 53) du poussoir sont en contact avec les surfaces de contact (32, 33) du contre-poussoir.
  10. Outil selon la revendication 9, caractérisé en ce que les surfaces de contact (32, 33) du contre-poussoir sont inclinées d'un angle d'environ 75° l'une par rapport à l'autre.
  11. Outil selon la revendication 10, caractérisé en ce que les parties latérales inclinées (52, 53) du poussoir font un angle d'environ 75° l'une par rapport à l'autre.
  12. Outil selon la revendication 10, caractérisé en ce que la forme pyramidale (38) possède des côtés qui font un angle d'environ 109° par rapport aux côtés opposés.
  13. Outil selon la revendication 9, caractérisé en ce que la forme pyramidale (38) possède un sommet plat (42).
  14. Outil selon la revendication 9, caractérisé en ce que le contre-poussoir (18) possède une surface de contact plate (34) entre ses deux surfaces de contact inclinées (32, 33).
  15. Outil selon la revendication 9, caractérisé en ce que la forme pyramidale (38) possède une base et quatre côtés, les deux parties latérales inclinées (52, 53) se prolongeant depuis la base au niveau de deux côtés opposés, et la partie antérieure (36) possède deux sections non inclinées se prolongeant depuis la base au niveau des deux autres côtés opposés.
  16. Procédé de sertissage d'un connecteur électrique sur un conducteur, comprenant les opérations suivantes:
       produire un outil de compression qui possède une tête de compression dotée d'une surface de contre-poussoir, un poussoir doté d'une surface d'enfoncement et un moyen servant à arrêter le mouvement du poussoir vers l'avant à une distance prédéterminée du contre-poussoir, le moyen qui sert à arrêter le mouvement vers l'avant comprenant une partie antérieure du poussoir qui est destinée à venir en contact avec la surface du contre-poussoir et à arrêter le mouvement du poussoir vers l'avant ;
       faire avancer le poussoir, à partir d'une première position, jusqu'en contact avec une surface extérieure du connecteur, le connecteur étant pris en sandwich entre le poussoir et le contre-poussoir ;
       déformer le connecteur en faisant avancer le poussoir au-delà de sa position de contact avec le connecteur ; et
       arrêter le mouvement du poussoir vers l'avant,
       caractérisé en ce que :
       l'enfoncement est effectué à l'aide d'une surface se prolongeant d'une section plate non complètement occupée et ayant une forme sensiblement pyramidale qui se trouve en avant de la partie antérieure du poussoir, la distance prédéterminée étant prise entre le sommet de la pyramide et le contre-poussoir et le déplacement du poussoir vers l'avant étant encore arrêté à l'apparition d'une force prédéterminée entre le poussoir et le contre-poussoir, la force prédéterminée apparaissant directement entre le poussoir et le contre-poussoir au niveau du moyen servant à arrêter le mouvement lors du sertissage d'un connecteur et d'un conducteur d'une première taille et la force prédéterminée apparaissant entre le poussoir et le contre-poussoir par l'intermédiaire du connecteur lors du sertissage d'un connecteur et d'un conducteur ayant une deuxième taille, relativement plus importante.
EP91116128A 1990-09-27 1991-09-23 Tête de compression sans matrice et méthode de sertissage Expired - Lifetime EP0477814B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US58933190A 1990-09-27 1990-09-27
US589331 1990-09-27

Publications (3)

Publication Number Publication Date
EP0477814A2 EP0477814A2 (fr) 1992-04-01
EP0477814A3 EP0477814A3 (en) 1992-04-22
EP0477814B1 true EP0477814B1 (fr) 1995-09-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP91116128A Expired - Lifetime EP0477814B1 (fr) 1990-09-27 1991-09-23 Tête de compression sans matrice et méthode de sertissage

Country Status (6)

Country Link
EP (1) EP0477814B1 (fr)
JP (1) JP3097038B2 (fr)
KR (1) KR920007275A (fr)
CA (1) CA2050532C (fr)
ES (1) ES2077755T3 (fr)
MX (1) MX9101112A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100319767B1 (ko) * 1998-01-29 2002-01-05 아미노 히로유키 판재의 다이 없는 성형장치
US10109971B2 (en) * 2016-04-14 2018-10-23 Hubbell Incorporated Portable dieless hand held power tools
PL238772B1 (pl) * 2017-09-27 2021-10-04 Zakl Metalowe Erko R Petlak Spolka Jawna Bracia Petlak Sposób zaciskania złączek lub końcówek kablowych

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2898790A (en) * 1957-05-29 1959-08-11 Burndy Corp Multi-stroke tool
US3619885A (en) * 1968-11-20 1971-11-16 Novopress Gmbh & Co Kg Variable-diameter crimping tool
US4136549A (en) * 1978-01-16 1979-01-30 Burndy Corporation Electrical cable connector tool

Also Published As

Publication number Publication date
EP0477814A3 (en) 1992-04-22
EP0477814A2 (fr) 1992-04-01
JPH04249084A (ja) 1992-09-04
CA2050532C (fr) 2001-04-17
JP3097038B2 (ja) 2000-10-10
ES2077755T3 (es) 1995-12-01
MX9101112A (es) 1992-05-04
CA2050532A1 (fr) 1992-03-28
KR920007275A (ko) 1992-04-28

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