EP4245469A1 - Outil de presse hydraulique et ensemble outil de presse hydraulique portable - Google Patents

Outil de presse hydraulique et ensemble outil de presse hydraulique portable Download PDF

Info

Publication number
EP4245469A1
EP4245469A1 EP22315061.6A EP22315061A EP4245469A1 EP 4245469 A1 EP4245469 A1 EP 4245469A1 EP 22315061 A EP22315061 A EP 22315061A EP 4245469 A1 EP4245469 A1 EP 4245469A1
Authority
EP
European Patent Office
Prior art keywords
electro
hydraulic pump
unit
hydraulic
press tool
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.)
Pending
Application number
EP22315061.6A
Other languages
German (de)
English (en)
Inventor
Patrick Vervier
Vincent Cerfeuillet
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.)
Dubuis et Cie SAS
Original Assignee
Dubuis et Cie SAS
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 Dubuis et Cie SAS filed Critical Dubuis et Cie SAS
Priority to EP22315061.6A priority Critical patent/EP4245469A1/fr
Publication of EP4245469A1 publication Critical patent/EP4245469A1/fr
Pending legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/005—Hydraulic driving means
    • 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
    • H01R43/0427—Hand tools for crimping fluid actuated hand crimping tools

Definitions

  • the present invention relates to a hydraulic press tool and to a portable hydraulic press tool assembly.
  • Portable hydraulic press tools that allow compressive forces of approximately 20 to 150 kilonewtons to be achieved are already known. These tools are commonly used to perform determined connection operations, e.g. for crimping connectors about electrical wires or hydraulic pipes and for compressing rivets, or for determined cutting operations, e.g. cutting electric wires during electric system installation and maintenance.
  • These tools generally comprise a body in which are accommodated a fluid reservoir, a hydraulic pump, a cylinder, and a piston capable of being moved inside the cylinder under the effect of an injection of pressurised fluid into the interior of the cylinder.
  • These tools also comprise a tool head fixed to the body and adapted to receive a die set, one of the dies being operated by the piston.
  • the dies and/or the head can be removable.
  • the head can receive different die sets depending on the operation to be performed.
  • An electric motor and the hydraulic pump causes an increase of hydraulic fluid pressure operating on the piston to move the later against the bias of a pressure spring.
  • the piston is connected to the tool head so as to move the die set.
  • the die set may comprise a movable and a fixed jaw.
  • the piston is connected to the tool head so as to move the movable jaw with respect to the fixed jaw.
  • the jaws may be shaped and/or provided with interchangeable accessory elements so as to adapt to a particular object, e.g. an electrical contact to be compressed or a metallic bar to be cut.
  • Document EP2626608A1 from the applicant discloses such a tool.
  • Such hydraulic press tools are very often used in external environments, e.g. along railway lines far from buildings provided with a connection to the electric power network, and require an electric energy source of their own, i.e. a portable electric accumulator or battery either integrated in or applied on the tool.
  • the known hydraulic press tool have a certain weight. This can lead to physical and mental operator fatigue.
  • a further requirement is due to the fact that most of the time operations, in particular those aimed at making connections between connectors and/or electrical cables are hampered by extremely restricted space conditions. It is therefore essential for compression tools to be a compact size.
  • the present invention provides a hydraulic press tool according to claim 1. More particularly, the hydraulic press tool comprises a work unit with a tool body, a handle and a tool head fitted to receive a die set which can be displaced between an open and a closed position to operate a workpiece; a battery unit comprising a battery support and a battery; an electro-hydraulic pump unit with an electro-hydraulic pump casing fitting a reservoir with a hydraulic liquid and an electro-hydraulic pump adapted to increase the pressure of a hydraulic liquid; wherein the electro-hydraulic pump unit is powered by the battery unit, and wherein the work unit is controlled by the electro-hydraulic pump unit.
  • a high pressure hose is provided between the tool body and the electro-hydraulic pump unit such that the work unit is physically separate from the electro-hydraulic pump unit
  • a power cable is provided between the battery unit and the electro-hydraulic pump unit such that the battery unit is physically separate from the electro-hydraulic pump unit.
  • the outlet between the electro-hydraulic pump casing and the high pressure hose is a swivel and hooded hydraulic outlet.
  • the work tool is easily manageable and easy to handle.
  • a rotary connection is provided between the high pressure hose and the work unit. This also increase the handle of the work tool.
  • a decompression cable is provided between the battery unit and the electro-hydraulic pump unit.
  • the electro-hydraulic pump casing is further fitting a decompression trigger connected to the decompression cable such as to release pression from the hydraulic liquid.
  • a decompression trigger connected to the decompression cable such as to release pression from the hydraulic liquid.
  • the battery support is provided with an emergency decompression pull button.
  • the emergency button can be easily reached by the operator, without risk of inadvertently triggering it, since it is not arranged on the work tool.
  • the electro-hydraulic pump casing is fitting a control card.
  • a wireless remote control can be provided.
  • a wired connection can also be provided. In that case an electric cable with a plug can be added between the work unit and the electro-hydraulic pump unit.
  • a USB connector may be provided on the electro-hydraulic pump casing in order to communicate with the control card.
  • the electro-hydraulic pump casing comprises a reservoir cap adapted to be opened to fill the reservoir with a hydraulic liquid.
  • the reservoir can easily be filled or emptied when needed.
  • the electro-hydraulic pump unit is arranged at a distance between 0.10 and 0.30 meters from the battery unit. This distance allows a good weight distribution.
  • the power cable has a length between 0.10 and 0.5 meters. This allows flexibility regarding the arrangement of the battery unit and the electro-hydraulic pump unit.
  • the high pressure hose has a length between 0.4 and 1.5 meters. This allows flexibility regarding the arrangement of electro-hydraulic pump unit with regard to the work unit and for the operator during an operation.
  • the electro-hydraulic pump casing has a substantially parallelepipedal shape with a front wall, a rear wall a top wall, a bottom wall and lateral edges connecting the front and rear walls, the walls defining a closed recess, and wherein the reservoir and the electro-hydraulic pump are arranged within the recess.
  • the casing is in plastic material and the plastic material fully surround the elements of the electro-hydraulic pump unit.
  • anti-shock protection means are provided on the outside surfaces of the walls.
  • the battery is removably attached to the battery support. More particularly the battery support is a battery mount which can be configured to release a rechargeable battery or battery pack mechanically and electrically.
  • the hydraulic press tool assembly comprises a hydraulic press tool and an attaching device, wherein the attaching device comprises a belt, a strap or a harness configured or adapted to be worn on the user's body, and wherein the battery support and the electro-hydraulic pump casing are connected to the attaching device, at distance from each other.
  • the attaching device comprises a belt, a strap or a harness configured or adapted to be worn on the user's body, and wherein the battery support and the electro-hydraulic pump casing are connected to the attaching device, at distance from each other.
  • the attaching device comprises receiving means adapted to receive the work unit.
  • the receiving means can be a hook or a pocket or a recess adapted to receive the work unit in part or fully before or after an operation.
  • the attaching device comprises a battery unit holder adapted to removably connect the battery unit to the attaching device, an electro-hydraulic pump unit holder adapted to removably connect the electro-hydraulic pump unit to the attaching device.
  • the battery unit holder and/or the electro-hydraulic pump unit holder can provide a snap fit connection, a hanging connection, a screwed connection, ..etc.
  • quick-release fasteners can be provided to removably fix the battery unit and/or the electro-hydraulic pump unit.
  • Fig. 1 shows an operator P with a hydraulic press tool assembly 10.
  • the hydraulic press tool assembly 10 comprises an attaching device 12 and a hydraulic press tool 14.
  • the hydraulic press tool 14 comprises a work unit 16, a battery unit 18 and an electro-hydraulic pump unit 20.
  • the work unit 16 is visible in Fig. 1 arranged in a hand of the operator, whereas the battery unit 18 and the electro-hydraulic pump unit 20 are arranged and attached on the attaching device 12.
  • the attaching device 12 is for instance a belt, a strap or a harness configured or adapted to be worn on the operator's body.
  • the attaching device 12 comprises connecting means to receive and securely fasten the battery unit 18 and the electro-hydraulic pump unit 20. More particularly, the attaching device 12 comprises a battery unit connector, to securely fasten the battery unit 18, and an electro-hydraulic pump unit connector to securely fasten the electro-hydraulic pump unit 20.
  • the battery unit 18, as seen in Fig. 1, 2A , 2B , 4 comprises a battery support 22 and a battery.
  • the battery is for example a rechargeable battery.
  • the battery is for instance in a battery casing 24 (or within the battery support 22).
  • the battery is a DEWALT XR 18V 5A.h battery.
  • the battery support 22 is a battery mount for instance and can be configured to release mechanically and electrically a rechargeable battery. Eventually, one or more batteries can be provided and connected to the battery support.
  • An electronic control circuit connected with and configured to manage and control the battery can also be provided.
  • the battery unit 18, and more particularly the battery 28 may be provided with a battery charge reader.
  • the battery support 22 is connected to the attaching device 12 for instance by means of a foam support 26. As seen in Fig. 1 , the battery support 22 may also be provided with an emergency decompression pull button 27.
  • the battery unit 18, and more particularly the battery support 22 is connected to the electro-hydraulic pump unit 20 by means of a power cable 28.
  • a decompression cable 30 is also provided between the battery support 22 and the electro-hydraulic pump unit 20.
  • the battery unit 18 can be arranged remote from the electro-hydraulic pump unit 20.
  • the electro-hydraulic pump unit 20 is physically separated from the battery unit 18.
  • the electro-hydraulic pump unit 20 is for instance arranged at a distance between 0.10 and 0.30 meters from the battery unit 18.
  • the power cable 28 has a length between 0.10 and 0.5 meters.
  • the decompression cable 30 may have sensibly the same length.
  • the electro-hydraulic pump unit 20 comprises an electro-hydraulic pump casing 32.
  • the electro-hydraulic pump casing 32 is for instance a plastic casing 32.
  • the electro-hydraulic pump casing 32 can be a two-parts casing 32a, 32b, first and second parts being connected together through fixing screws.
  • the electro-hydraulic pump casing 32 has a substantially parallelepipedal shape with a front wall, a rear wall a top wall, a bottom wall and lateral edges connecting the front and rear walls, the walls defining a closed recess 34, as depicted in Fig. 2A .
  • Anti-shock protection means 35 may be provided on the outside surfaces of the walls.
  • the recess 34 fits a reservoir 36 adapted to receive a hydraulic liquid.
  • the electro-hydraulic pump casing 32 comprises a reservoir cap 37 adapted to be opened to fill or empty the reservoir 36 with a hydraulic liquid.
  • the reservoir cap 37 is for instance arranged on the rear wall of the electro-hydraulic pump casing 32.
  • the recess 34 further fits an electro-hydraulic pump 38 adapted to increase the pressure of the hydraulic liquid.
  • the electro-hydraulic pump 38 and the reservoir 36 forms a hydraulic sub-assembly which is well-known from persons skilled in the art and will not be described in further details.
  • Filters 39 are also arranged in the recess and are connected to the hydraulic sub-assembly.
  • a decompression trigger 40 connected to the decompression cable 30 such as to release pression from the hydraulic liquid is also included in the electro-hydraulic pump casing 32.
  • the decompression trigger 40 has for instance the shape of a lever and can be actuated by the decompression cable 30.
  • the decompression cable 30 is for instance arranged between the emergency decompression pull button 27 and the decompression trigger 40, such that the decompression trigger 40 is notably actuated when the emergency decompression pull button 27 is activated.
  • a control card 42 is fitted within the electro-hydraulic pump casing.
  • a wireless remote control can be provided.
  • a wired connection can also be provided.
  • an electric cable with a plug can be added between the work unit and the electro-hydraulic pump unit.
  • a micro USB connector or the like may be provided on the electro-hydraulic pump casing in order to communicate with the control card.
  • the rear wall of the electro-hydraulic pump casing 32 is adapted to be connected to the attaching device 12.
  • the head of the fixing screws may seat on the outside surface of the rear wall.
  • the rear wall is connected (or fixed) to the attaching device 12 for example by means of a foam support 26b.
  • the total weight of the electro-hydraulic pump unit 20 is for instance between 3 and 5 kilograms, and more particularly around 4,5 kilograms.
  • the work unit 16 Remote from the electro-hydraulic pump casing 32, the work unit 16 is arranged.
  • the work unit 16 comprises a tool body 44, a handle 46 and a tool head 48 fitted to receive a die set 50 which can be displaced between an open and a closed position to operate a workpiece.
  • the tool body 44 comprises a cylinder, a piston capable of being moved inside the cylinder under the effect of an injection of pressurised fluid into the interior of the cylinder.
  • the piston is adapted to operate the die set, and more particularly one of the dies of the set.
  • the piston is movable between a retracted position and an extended position to operate the die.
  • a spring, and more particularly a helical return spring urges the piston toward the retracted position.
  • the handle 46 may have the shape of a joystick, as visible in Fig. 5 or may be formed directly by the tool body 44, as visible in Fig. 6 .
  • a depicted in Fig. 6 a remote control 52 is fixed to the tool body for controlling the tool.
  • the work unit 16 may have a weight between 2 and 4 kilograms.
  • a high pressure hose 54 is provided between the work unit 16 and the electro-hydraulic pump unit 20. More particularly the work unit 16 and the electro-hydraulic pump unit 20 are physically separated and the high pressure hose 54 connects both units.
  • the high pressure hose 54 has for instance a length between 0.4 and 1.5 meters, such that both units can be arranged at non-zero distance.
  • the high pressure hose is for instance a high pressure hose fitting up to 21.000 psi (1500 bar).
  • the working pressure is for instance 700 bar.
  • the high pressure hose 54 can eventually be a sheathed high pressure hose.
  • the high pressure hose 22 is a flexible DN4 hose 1500 bar.
  • the high pressure hose forms a fluid injection conduit extending between the reservoir (in the electro-hydraulic pump unit 20) and a cavity of the cylinder (in the tool body).
  • the high pressure hose 54 is directly connected at a first end to the hydraulic sub-assembly (of the electro-hydraulic pump unit 20).
  • the outlet between the electro-hydraulic pump casing and the high pressure hose is a swivel and hooded hydraulic outlet.
  • the high pressure hose 54 is connected to the work unit 16, and more precisely to the tool body 44 through a rotary connection 56, in order to improve the ergonomic of the hydraulic press tool.
  • the attaching device 12 comprises a belt 58 adapted to be worn be an operator's body.
  • the battery unit 18 may be arranged on the belt 58 on the left side of the operator
  • the electro-hydraulic pump unit 20 may be arranged in the back of the operator
  • a hook 60 may be provided on the right side of the operator, on the belt 58.
  • the hook 60 may be used to removably attach the work unit to the belt.
  • other means such has a pouch can be used to removably connect the work unit to the attaching device before or after an operation.
  • the operator can easily grip the work unit 16 only to realize an operation, the battery unit, and the electro-hydraulic pump unit 20 staying arranged on the attaching device 12.
  • the arm of the operator thus only holds the work unit 16 (as depicted in Fig. 1 ).
  • Battery unit 18 and electro-hydraulic pump unit 20 are worn by the operator, especially on his belt. Thus, a total freedom of movement is possible.
  • the operator can reattach the work unit again to the belt 58.
  • Battery unit 18 and/or electro-hydraulic pump unit 20 can be fixedly or removably attached to the attaching device 12.
  • the battery unit 18 and/or the electro-hydraulic pump unit 20 can be movably attached to the attaching device 12, such that an operator can arranged the battery unit 18 at a chosen distance from the hydraulic pump unit 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
EP22315061.6A 2022-03-14 2022-03-14 Outil de presse hydraulique et ensemble outil de presse hydraulique portable Pending EP4245469A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22315061.6A EP4245469A1 (fr) 2022-03-14 2022-03-14 Outil de presse hydraulique et ensemble outil de presse hydraulique portable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22315061.6A EP4245469A1 (fr) 2022-03-14 2022-03-14 Outil de presse hydraulique et ensemble outil de presse hydraulique portable

Publications (1)

Publication Number Publication Date
EP4245469A1 true EP4245469A1 (fr) 2023-09-20

Family

ID=81327623

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22315061.6A Pending EP4245469A1 (fr) 2022-03-14 2022-03-14 Outil de presse hydraulique et ensemble outil de presse hydraulique portable

Country Status (1)

Country Link
EP (1) EP4245469A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1075857A (en) * 1963-12-13 1967-07-12 Burndept Ltd Battery operated mechanical power unit
EP2181807A2 (fr) * 2008-11-03 2010-05-05 Tyco Electronics Corporation Dispositif de pressage électro-hydraulique doté d'un ensemble de tuyau amovible
EP2626608A1 (fr) 2012-02-13 2013-08-14 Dubuis et Cie S.A.S. Soupape de surpression pour un outil de presse hydraulique et outil de presse hydraulique associé
WO2013143606A1 (fr) 2012-03-30 2013-10-03 Lukas Hydraulik Gmbh Procédé permettant de faire fonctionner un ensemble pompe hydraulique et ensemble de pompe hydraulique
EP3166755A1 (fr) 2014-07-07 2017-05-17 Cembre S.p.A. Procédé d'exploitation d'un outil de compression hydrodynamique et outil de compression hydrodynamique
EP3213880A1 (fr) 2016-03-02 2017-09-06 CEMBRE S.p.A. Pompe hydraulique pour un outil de compression hydrodynamique
EP3519123A1 (fr) 2016-09-30 2019-08-07 Apex Brands, Inc. Outil électrique hydraulique portable
IT201800007471A1 (it) * 2018-07-24 2020-01-24 Pompa idraulica per un utensile idrodinamico di compressione

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1075857A (en) * 1963-12-13 1967-07-12 Burndept Ltd Battery operated mechanical power unit
EP2181807A2 (fr) * 2008-11-03 2010-05-05 Tyco Electronics Corporation Dispositif de pressage électro-hydraulique doté d'un ensemble de tuyau amovible
EP2626608A1 (fr) 2012-02-13 2013-08-14 Dubuis et Cie S.A.S. Soupape de surpression pour un outil de presse hydraulique et outil de presse hydraulique associé
WO2013143606A1 (fr) 2012-03-30 2013-10-03 Lukas Hydraulik Gmbh Procédé permettant de faire fonctionner un ensemble pompe hydraulique et ensemble de pompe hydraulique
EP3166755A1 (fr) 2014-07-07 2017-05-17 Cembre S.p.A. Procédé d'exploitation d'un outil de compression hydrodynamique et outil de compression hydrodynamique
EP3213880A1 (fr) 2016-03-02 2017-09-06 CEMBRE S.p.A. Pompe hydraulique pour un outil de compression hydrodynamique
EP3519123A1 (fr) 2016-09-30 2019-08-07 Apex Brands, Inc. Outil électrique hydraulique portable
IT201800007471A1 (it) * 2018-07-24 2020-01-24 Pompa idraulica per un utensile idrodinamico di compressione

Similar Documents

Publication Publication Date Title
CN108015720B (zh) 电动工具
EP3166755B1 (fr) Procédé d'exploitation d'un outil de compression hydrodynamique et outil de compression hydrodynamique
US7762117B2 (en) Crimp die holding mechanism
EP0389716B1 (fr) Mécanisme à came et outil hydraulique motorisé
JP5495717B2 (ja) 取り外し可能なホース組立体を備える電気油圧プレス装置
EP3462518B1 (fr) Système d'outil de sac à dos et son appareil d'alimentation électrique
TWI293594B (en) A hand-held fastener-driving tool
CN109108913B (zh) 手持式工具机
EP3660994A1 (fr) Manche de pince de préhension d'engrenage isolant haute tension multifonction hydraulique manuel pour travail de fil sous tension et procédé de construction de fil sous tension indirect utilisant un manche de pince
US10093010B2 (en) Multi-stage hydraulic tool
US10320140B2 (en) Crimping dies for making bends
CN107199536B (zh) 液力压紧或切割工具
EP2003761A3 (fr) Adaptateur pour outils électriques sans fil
JP7009192B2 (ja) 圧縮又は切断工具のための加工ヘッド
WO2010005509A1 (fr) Ensembles têtes d'outil pour dispositifs de pressage
EP4245469A1 (fr) Outil de presse hydraulique et ensemble outil de presse hydraulique portable
WO2023064628A1 (fr) Outils hydrauliques portatifs portables
JP6258063B2 (ja) 集塵装置
KR20120116233A (ko) 충전식 배터리를 가지는 전동공구
JP2009039841A5 (fr)
EP4245466A1 (fr) Outil hydraulique portable et poignée d'outil hydraulique portable
CN114644299A (zh) 液压工作装置
KR0160759B1 (ko) 전동 유압공구
CN112996631A (zh) 长杆式打磨机
US20130075442A1 (en) Snap installation tool adaptor

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20240214

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED