EP3505300B1 - Dispositif d'enlèvement d'un anneau d'étanchéité d'un injecteur - Google Patents

Dispositif d'enlèvement d'un anneau d'étanchéité d'un injecteur Download PDF

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Publication number
EP3505300B1
EP3505300B1 EP18200371.5A EP18200371A EP3505300B1 EP 3505300 B1 EP3505300 B1 EP 3505300B1 EP 18200371 A EP18200371 A EP 18200371A EP 3505300 B1 EP3505300 B1 EP 3505300B1
Authority
EP
European Patent Office
Prior art keywords
injector
guide
sealing ring
designed
guide element
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.)
Active
Application number
EP18200371.5A
Other languages
German (de)
English (en)
Other versions
EP3505300A1 (fr
Inventor
Helmut Benzinger
Josef Hiller
Steffen Huemmer
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP3505300A1 publication Critical patent/EP3505300A1/fr
Application granted granted Critical
Publication of EP3505300B1 publication Critical patent/EP3505300B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B25B7/02—Jaws
    • 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
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/0028—Tools for removing or installing seals

Definitions

  • the invention relates to a device, in particular pliers, for removing a sealing ring from an injector, according to the preamble of patent claim 1.
  • Such a device goes for example from the US 1,936,981 A. forth.
  • Fuel injectors are fitted with sealing rings, e.g. made of Teflon, to seal the interface between the injector and the engine when the injector is installed in the engine, in particular in an intake tract or combustion chamber of the engine.
  • sealing rings e.g. made of Teflon
  • the sealing rings are wear parts that must be replaced when the injector is removed and reinstalled.
  • the injectors themselves generally have a significantly longer service life. When removing a sealing ring from an injector using conventional pliers, there is a risk that the injector will be damaged and must be replaced prematurely.
  • the invention provides a device according to claim 1.
  • a device for removing a sealing ring from an injector has two levers which are pivotally connected to one another. On each of the two Lever is formed at least one contact surface ("cutting surface") for gripping a sealing ring mounted on an injector. At least one guide element is provided on at least one of the two levers, which is designed to guide the injector such that the sealing ring mounted on the injector is positioned opposite the contact surfaces of the device.
  • the at least one guide element ensures that only the sealing ring to be replaced, but not the injector itself, comes into contact with the contact / cutting surfaces of the device. Damage to the injector by the contact / cutting surfaces of the device can thus be reliably prevented.
  • the at least one guide element has at least one recess which is designed to receive the injector.
  • the injector is arranged in the correct position, in which a sealing ring attached to the injector is positioned on the contact surfaces of the device, when it is in the at least one recess.
  • the at least one recess is designed as a hollow cylinder half in order to receive a cylindrical region of the injector and to fix it in the radial direction.
  • the at least one guide element has a stop which limits the mobility of the injector in its axial direction in order to position and fix the injector in the axial direction.
  • a guide element is arranged on two opposite sides of the at least one lever / the at least one contact surface.
  • At least two contact surfaces are formed on each lever, and the at least one guide element has a first guide / recess and at least one second guide / recess.
  • the first guide / recess is designed such that the sealing ring is positioned opposite the first contact surface when the injector is arranged in the first guide / recess.
  • the second guide / recess is designed such that the sealing ring is positioned opposite the second contact surface when the injector is arranged in the second guide / recess.
  • the first guide / depression and the first contact area can be used in particular for a first injector type, and the second guide / depression and the second contact area can be used for a second injector type, which differs from the first injector type.
  • the same device can be used to remove the sealing rings from at least two different injector types.
  • injectors from at least two different generations or injectors for different types of fuel e.g. gasoline and diesel fuel
  • the at least one guide element is formed integrally with the at least one lever. In this way, the at least one guide element can be inexpensively formed together with the at least one lever.
  • the at least one guide element is detachably attached to the at least one lever.
  • a guide element formed separately from the at least one lever can be formed from a different material than the lever.
  • the lever with the contact / cutting surface can be made of metal and the at least one guide element can be made of plastic.
  • a guide element detachably attached to the at least one lever can be exchanged. This makes it possible to adapt the device to different injector types by exchanging the at least one guide element.
  • the levers are designed as embossed molded parts. Levers designed as embossed molded parts can be produced inexpensively.
  • the device has an elastic element, for example a spring, which is designed to press the levers into a predetermined position. In this way, the handling of the device can be simplified.
  • an elastic element for example a spring
  • Figure 1 shows a side view of a device 2, in particular a pair of pliers 2 according to an embodiment of the invention.
  • the Figures 2 and 3rd each show a perspective view of the in the Figure 1 shown device 2.
  • the pliers 2 have two levers 4, 6, which are connected to one another by a joint 8 in such a way that they can be pivoted relative to one another.
  • Each of the two levers 4, 6 has one in each Figures 1 to 3 Grip region 4a, 6a shown on the left, which is designed to grip the respective lever 4, 6, and one on the other side of the joint 8 (in FIGS Figures 1 to 3 right)) jaw area 4b, 6b, each for gripping one in the Figures 1 to 3 injector 30, not shown (see Figures 4 and 5 ) is trained.
  • An elastic element 10 for example a spring, is arranged between the grip areas 4a, 6a of the two levers 4, 6 and presses the two grip areas 4a, 6a apart.
  • the grip areas 4a, 6a and the jaw areas 4b, 6b are therefore separated from one another in the unactuated state of the pliers 2, as shown in FIGS Figures 1 to 3 is shown.
  • two are each formed as recesses 12a, 12b.
  • the boundary surfaces of the recesses 12a, 12b are designed as gripping or cutting surfaces, which make it possible to mount a sealing ring 32 mounted on an injector 30 (see Figures 4 and 5 ) to grip and remove from the injector 30.
  • Two guide elements 14, 16 are formed on one of the two jaw regions 4b, 6b.
  • the guide elements 14, 16 can in particular with the aid of screws 18 (see Figure 3 ) be attached to the lever 4.
  • the guide elements 14, 16 can be formed integrally with the lever 4.
  • the two guide elements 14, 16 have guides 14a, 14b, 16a designed as recesses, which are each designed to receive a region of an injector 30.
  • the depressions 14a, 14b, 16a are each designed in the form of a half hollow cylinder (hollow cylinder half shell) and make it possible in each case to receive a cylindrical region 34 of an injector 30 and to hold it in a predetermined position.
  • the guide elements 14, 16 are formed with stops 20, 22 against which the injector 30 bears in the axial direction when it is arranged in the correct position in the respective guide / recess 14a, 14b, 16a.
  • this shows in the Figures 1 and 3rd the guide element 16 facing the viewer has at the end of the recess 16a a stop 20 against which the tip of an injector 30 inserted into the recesses 14a, 16a strikes.
  • the other guide element 14 has a stop surface 22 (see Figure 2 ), on which a bobbin 36 of the injector 30 comes to a stop when the injector 30 is inserted into the second recess 14b (see Fig. 4 ).
  • Each combination of depressions 12a, 14a, 16a or 12b, 14b and stops 20, 22 is designed for a different injector type.
  • the one in the figures Pliers 2 shown therefore make it possible to remove sealing rings 32 from at least two different injector types.
  • Figure 4 shows an injector 30 which is inserted into the first guides / depressions 14a, 16a of the pliers 2. That in the Figure 4 The end of the injector 30 shown on the left abuts the stop 20, so that the position of the injector 30 relative to the pliers 2 is fixed both in the radial and in the axial direction.
  • the gripping / cutting surface formed on the recess 12a of the opposing jaw region 4b only comes into contact with the sealing ring 32 applied to the cylindrical region 34 of the injector 30 when the pliers 2 are closed, but does not touch the cylindrical region 34 of the injector 30.
  • Figure 5 shows an injector 30 which is inserted into the second guide / recess 14b.
  • the position of the injector 30 in its axial direction is not determined by a stop at the tip of the injector 30. Instead, a coil former 36 of the injector 30 strikes a stop surface 22 (see Figure 2 ), which is formed on the first guide element 14. The position of the injector 30 and in particular of the sealing ring 32 applied to the cylindrical region 34 of the injector 30 is thereby defined in the axial direction of the injector 30.
  • the gripping / cutting surface formed on the recess 12b in the jaw region 4b of the pliers 2 only comes into contact with the sealing ring 32 when the pliers 2 are closed, but not with the cylindrical region 34 of the injector 30, so that here too Damage to the injector 30 by the gripping / cutting surfaces of the pliers 2 is reliably avoided.
  • a pair of pliers 2 according to one embodiment of the invention therefore makes it possible to tangentially seal seals 32 applied to an injector 30 and to remove them easily without the risk of injector 30 being damaged when the sealing ring 32 is removed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (9)

  1. Dispositif, notamment pince (2), pour retirer une bague d'étanchéité (32) d'un injecteur (30), comprenant :
    deux leviers (4, 6) qui sont reliés de manière pivotante l'un à l'autre,
    au moins une surface de contact destinée à venir en prise avec une bague d'étanchéité (32) montée sur l'injecteur (30) étant formée sur chacun des deux leviers (4, 6) ; et
    au moins un élément de guidage (14, 16) étant présent sur au moins l'un des deux leviers (4, 6), lequel est configuré pour guider l'injecteur (30) de telle sorte qu'une bague d'étanchéité (32) montée sur l'injecteur (30) est positionnée à l'opposé des surfaces de contact du dispositif (2),
    caractérisé en ce que l'au moins un élément de guidage (14, 16) possède une butée (20) qui limite la mobilité de l'injecteur (30) dans sa direction axiale.
  2. Dispositif (2) selon la revendication 1, l'au moins un élément de guidage (14, 16) possédant au moins un guide (14a, 14b, 16a) qui est configuré pour accueillir l'injecteur (30).
  3. Dispositif (2) selon la revendication 2, l'au moins un guide (14a, 14b, 16a) étant réalisé sous la forme d'une moitié de cylindre creux.
  4. Dispositif (2) selon l'une des revendications précédentes, un élément de guidage (14, 16) étant respectivement disposé sur deux côtés mutuellement opposés de l'au moins un levier (4, 6).
  5. Dispositif (2) selon l'une des revendications précédentes, au moins deux surfaces de contact étant configurées sur chaque levier (4, 6) et l'au moins un élément de guidage (14, 16) possédant un premier guide (14a, 16a) et au moins un deuxième guide (14b), les premier et deuxième guides (14a, 14b, 16a) étant configurés de telle sorte que la bague d'étanchéité (32) est positionnée à l'opposé de la première surface de contact lorsque l'injecteur (30) est disposé dans le premier guide (14a, 16a) et que la bague d'étanchéité (32) est positionnée à l'opposé de la deuxième surface de contact lorsque l'injecteur (30) est disposé dans le deuxième guide (14b).
  6. Dispositif (2) selon l'une des revendications 1 à 5, l'au moins un élément de guidage (14, 16) étant formé d'un seul tenant avec l'au moins un levier (4, 6).
  7. Dispositif (2) selon l'une des revendications 1 à 5, l'au moins un élément de guidage (14, 16) étant monté de manière amovible sur l'au moins un levier (4, 6).
  8. Dispositif (2) selon l'une des revendications précédentes, les leviers (4, 6) étant réalisés sous la forme de pièces moulées gaufrées.
  9. Dispositif (2) selon l'une des revendications précédentes, comprenant un élément élastique (10) qui est configuré pour déplacer les leviers (4, 6) dans une position prédéfinie.
EP18200371.5A 2017-12-07 2018-10-15 Dispositif d'enlèvement d'un anneau d'étanchéité d'un injecteur Active EP3505300B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017222173.9A DE102017222173A1 (de) 2017-12-07 2017-12-07 Vorrichtung zum Entfernen eines Dichtringes von einem Injektor

Publications (2)

Publication Number Publication Date
EP3505300A1 EP3505300A1 (fr) 2019-07-03
EP3505300B1 true EP3505300B1 (fr) 2020-07-08

Family

ID=63857804

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18200371.5A Active EP3505300B1 (fr) 2017-12-07 2018-10-15 Dispositif d'enlèvement d'un anneau d'étanchéité d'un injecteur

Country Status (2)

Country Link
EP (1) EP3505300B1 (fr)
DE (1) DE102017222173A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1936981A (en) * 1932-10-11 1933-11-28 Albert M Houghton Packing placement tool
US3884100A (en) * 1973-07-12 1975-05-20 William C Fideldy Pipe tongs
US5014578A (en) * 1990-01-08 1991-05-14 Flentge Melvin L Pipe tongs
US6389937B1 (en) * 2001-06-19 2002-05-21 Hsin-Fa Kang Universal grip pliers
TWM310084U (en) * 2006-08-21 2007-04-21 Auto Skill Ind Co Ltd Pipe fastener dismounting pliers

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
DE102017222173A1 (de) 2019-06-13
EP3505300A1 (fr) 2019-07-03

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