EP1908084A1 - Dispositif pour réglage de commande de la soupape pour un appareil d assemblage à gaz et appareil comprenant le dispositif - Google Patents

Dispositif pour réglage de commande de la soupape pour un appareil d assemblage à gaz et appareil comprenant le dispositif

Info

Publication number
EP1908084A1
EP1908084A1 EP06795067A EP06795067A EP1908084A1 EP 1908084 A1 EP1908084 A1 EP 1908084A1 EP 06795067 A EP06795067 A EP 06795067A EP 06795067 A EP06795067 A EP 06795067A EP 1908084 A1 EP1908084 A1 EP 1908084A1
Authority
EP
European Patent Office
Prior art keywords
valve
gas
diode
solenoid
discharge
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.)
Ceased
Application number
EP06795067A
Other languages
German (de)
English (en)
Inventor
Pascale Grandjean
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.)
Societe de Prospection et dInventions Techniques SPIT SAS
Original Assignee
Societe de Prospection et dInventions Techniques SPIT 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 Societe de Prospection et dInventions Techniques SPIT SAS filed Critical Societe de Prospection et dInventions Techniques SPIT SAS
Publication of EP1908084A1 publication Critical patent/EP1908084A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/08—Hand-held nailing tools; Nail feeding devices operated by combustion pressure
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F7/1805—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current
    • H01F7/1811—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current demagnetising upon switching off, removing residual magnetism

Definitions

  • the invention involves a control device for a gas transmission valve for a gas cartridge in a combustion chamber in a gas-powered fastening device, comprising a valve control solenoid, and distinguished by the fact that it comprises an adjustment circuit to stabilize the discharge of said solenoid.
  • the device comprises, at its output, a discharge diode for the solenoid for evacuating the electrical energy stored therein while the valve is being opened, where the adjustment comprises at least one voltage adjustment diode that is mounted in series with the discharge diode.
  • the voltage adjustment diode can be a Zener diode, selected as a function of its breakdown voltage or Zener voltage in order to adjust the closure speed of the valve to a desirable value.
  • the invention likewise concerns a gas-powered fastening device that comprises the control device of the invention.
  • FIG. 1 is a sketch of the ordinary control device for a gas admission valve for a gas-powered fastening device
  • - Figure 2 is a timing chart for multiple electrical controls for a valve including the one resulting from the control device in compliance with the invention
  • - Figure 3 is the path of a characteristic current-voltage for a discharge circuit
  • - Figure 4 is a sketch of the control device for a valve in a gas-powered fastening device in compliance with the invention
  • - Figure 6 is a timing chart of the progress of the control current and voltage at the solenoid ends without the adjustment circuit in the invention
  • - Figure 7 is a timing chart of the progress of the control current and the voltage at the control device ends in compliance with the invention.
  • diode 7 In order to close valve 2, starting from the time t2 when power supply to solenoid 6 is stopped, diode 7 more or less rapidly evacuates the energy stored in solenoid 6, according to one of the closure curves, 13 or 14, and the instant that valve 2 is closed occurs only when I reaches a residual current If within which the magnetic action of solenoid 6 can no longer compensate for the action of the return spring in valve 2, i.e. after a variable period, closure can take place between instants t3 and t4 which correspond to characteristic discharge curves 13 and 14 of solenoid 6 in diode 7.
  • the quantity of gas admitted into the combustion chamber is much more precise.
  • the characteristics 21 and 22, representing current Id circulating in the discharge circuit 7, and which therefore here a discharge diode, as a function of the voltage V at the ends of solenoid 6, presents an elbow to the voltage of threshold Vo of approximately 0.6 volts starting from which diode 7 passes. All diodes known as adjustment diodes have a threshold diode of approximately this value.
  • the discharge diode 7 allows evacuation of the energy stored in solenoid 6 through a current Id that is established at a value that is equal to Vo/L, where L is the reactance of solenoid 6.
  • the two diodes In the most frequently used direction, the two diodes have the same characteristic and have a threshold Vo of 0.6 volts and here -Vo for the Zener 9 diode, because it is in opposition to the discharge diode 7.
  • timing chart 40 of voltage V at the ends of solenoid 6 is in solid lines and chart 45 of currents Ic and Id in dotted lines.
  • the cross-hatched surface 41 corresponds to the image of the energy evacuated by diode 7. It is spread out over time just as the time period T is terminated at an instant t3 or t4 later relative to the instant t2 when valve closure control 2 is activated.
  • Vz can be selected from between about 6.8 and 20 volts.
  • Id max Vbattey / Rsolenoid.
  • the maximum value of current Id does not depend on the Zener voltage. From the value of the voltage to the Zener voltage depends on the slope of the discharge current but not the maximum value of the current. If the Zener voltage selected is greater than 6.8 V, the closure time between t2 and t5 hardly decreases any more at all, because the speed of valve 2's closure is limited by the speed of the shift in the return spring (mechanical limit). 1817
  • n adjustment diodes Di (not shown) in series with the discharge diode 7, where current I has the value (n + 1) Vo / L which is much greater than the one above, and the energy is evacuated much more quickly and is likewise made more stable. But there would then have had to be many more diodes in order to obtain a speed of closure for valve 2 that would lead to proper stability of T. This solution is one of less interest.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Feeding And Controlling Fuel (AREA)

Abstract

La présente invention concerne un dispositif (1, 6) pour commander une soupape (2) pour transmission de gaz à partir d’une cartouche de gaz (3) dans une chambre de combustion dans un appareil d’assemblage à gaz, qui comprend un solénoïde (6) pour commander la soupape (2). Il comprend un circuit de régulation pour stabilisation de la décharge (Id) à partir de ledit solénoïde (6).
EP06795067A 2005-07-01 2006-07-01 Dispositif pour réglage de commande de la soupape pour un appareil d assemblage à gaz et appareil comprenant le dispositif Ceased EP1908084A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0507044A FR2887958B1 (fr) 2005-07-01 2005-07-01 Dispositif de reglage de commande de vanne pour appareil de fixation a gaz et l'appareil comportant le dispositif
PCT/IB2006/001817 WO2007004024A1 (fr) 2005-07-01 2006-07-01 Dispositif pour réglage de commande de la soupape pour un appareil d’assemblage à gaz et appareil comprenant le dispositif

Publications (1)

Publication Number Publication Date
EP1908084A1 true EP1908084A1 (fr) 2008-04-09

Family

ID=36579235

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06795067A Ceased EP1908084A1 (fr) 2005-07-01 2006-07-01 Dispositif pour réglage de commande de la soupape pour un appareil d assemblage à gaz et appareil comprenant le dispositif

Country Status (7)

Country Link
EP (1) EP1908084A1 (fr)
CN (1) CN101213623B (fr)
AU (1) AU2006264612B2 (fr)
CA (1) CA2612675C (fr)
FR (1) FR2887958B1 (fr)
NZ (1) NZ565556A (fr)
WO (1) WO2007004024A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2955516B1 (fr) * 2010-01-26 2012-04-20 Prospection & Inventions Procede de commande d'un outil a moteur a combustion interne et l'outil ainsi commande
JP2015065377A (ja) * 2013-09-26 2015-04-09 カヤバ工業株式会社 電気回路

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3643129A (en) * 1970-11-30 1972-02-15 Gen Motors Corp Solenoid control apparatus
US3705333A (en) * 1972-02-09 1972-12-05 Ibm Adjustable active clamp circuit for high speed solenoid operation
DE2815849C2 (de) * 1978-04-12 1984-08-23 Linde Ag, 6200 Wiesbaden Elektromagnetisch betätigte Gaswechselventile für Kolbenmaschinen
DE2862229D1 (en) * 1978-07-06 1983-05-19 Burkert Gmbh Electronically controlled magnetic valve
DE2905900A1 (de) * 1979-02-16 1980-08-28 Bosch Gmbh Robert Vorrichtung zur steuerung der entregungszeit von elektromagnetischen einrichtungen, insbesondere von elektromagnetischen einspritzventilen bei brennkraftmaschinen
DE3213515A1 (de) * 1982-04-10 1983-10-20 Honeywell and Philips Medical Electronics B.V., 5611 Eindhoven Erregerschaltung fuer magnetventile
DE19725317B4 (de) * 1997-06-09 2005-06-23 Vickers Systems Zweigniederlassung Der Trinova Gmbh Schaltungsanordnung zur Ansteuerung eines mit Gleichspannung betätigbaren Magnetventiles
FR2774934B1 (fr) * 1998-02-13 2000-03-31 Spit Soc Prospect Inv Techn Appareil de fixation a gaz comprime

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2007004024A1 *

Also Published As

Publication number Publication date
WO2007004024A1 (fr) 2007-01-11
CN101213623A (zh) 2008-07-02
FR2887958B1 (fr) 2007-10-12
AU2006264612B2 (en) 2011-02-10
NZ565556A (en) 2011-03-31
AU2006264612A1 (en) 2007-01-11
FR2887958A1 (fr) 2007-01-05
WO2007004024A9 (fr) 2018-07-12
CA2612675C (fr) 2013-11-05
CA2612675A1 (fr) 2007-01-11
CN101213623B (zh) 2011-05-18

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