FR2556643A1 - Safety electronic contact detector - Google Patents
Safety electronic contact detector Download PDFInfo
- Publication number
- FR2556643A1 FR2556643A1 FR8320368A FR8320368A FR2556643A1 FR 2556643 A1 FR2556643 A1 FR 2556643A1 FR 8320368 A FR8320368 A FR 8320368A FR 8320368 A FR8320368 A FR 8320368A FR 2556643 A1 FR2556643 A1 FR 2556643A1
- Authority
- FR
- France
- Prior art keywords
- electronic
- chain
- contact detector
- chainsaw
- current
- 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.)
- Withdrawn
Links
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
- F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
- F16P3/00—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
- F16P3/12—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B17/00—Chain saws; Equipment therefor
- B27B17/08—Drives or gearings; Devices for swivelling or tilting the chain saw
- B27B17/083—Devices for arresting movement of the saw chain
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Sawing (AREA)
Abstract
Description
L'invention se rapporte à un détecteur électronique de contact assurant le déclenchement immédiat du frein de channe d'une tronçonneuse dès son contact accidentel avec l'utilisateur. The invention relates to an electronic contact detector ensuring the immediate triggering of the chain brake of a chainsaw upon accidental contact with the user.
Les machines sont actuellement pourvues d'un système de blocage de channe manuel ou automatique suite à un choc violent sur la manette de frein. The machines are currently equipped with a manual or automatic chain blocking system following a violent impact on the brake lever.
el is, dans le cas où l'utilisateur entre en contact avec la channe suite à un faux mouvement ou à une chute, celle-ci pénètre aisément dans ses chairs avant même qu'il ait eu le temps ou la possibilité de réagir. el is, in the case where the user comes into contact with the channe following a false movement or a fall, it easily penetrates into his flesh before he has had the time or the opportunity to react.
Les conséquences d'un tel accident sont bien souvent graves à cause de la facilité de pénétration, provoquant de très profondes entailles ou sections de membres. The consequences of such an accident are often serious because of the ease of penetration, causing very deep cuts or sections of limbs.
le résultat de l'invention est l'annulation des conséquences graves citées plus haut ; en effet un détecteur électronique permet immédiatement le déclenchement du blocage de chatne dès le contact de celle-ci avec le corps de l'utilisateur, sans que celui-ci ait eu à intervenir d'une quelconque façon. the result of the invention is the cancellation of the serious consequences mentioned above; indeed, an electronic detector immediately allows the blocking of the catches to be triggered as soon as it contacts the body of the user, without the user having to intervene in any way.
L'invention sera bien comprise à l'aide de la description faite en regard du dessin ci-annexé qui représente sehématique ment :
- ligure 1 : vue d'ensemble de la tronçonneuse,
figure 2 : vue du déclencheur automatique du frein de channe,
- figure 3 : vue du déclencheur commandé par l'électroaimant,
- figure 4 : exemple d'un schéma électronique du détecteur.The invention will be clearly understood with the aid of the description given with regard to the attached drawing which represents thematically:
- Figure 1: overview of the chainsaw,
Figure 2: view of the automatic chain brake trigger,
- Figure 3: view of the trigger controlled by the electromagnet,
- Figure 4: example of an electronic diagram of the detector.
En se rapportant aux dessins on voit que la poignée tubulaire 1 peut etre isolée du bloc tronçonneuse 3 par des pattes plastiques et rondelles isolantes 2. Referring to the drawings, it can be seen that the tubular handle 1 can be isolated from the chain saw block 3 by plastic tabs and insulating washers 2.
étant métallique, la poignée peut etre reliée par le fil électrique 18 du détecteur électronique 16. being metallic, the handle can be connected by the electric wire 18 of the electronic detector 16.
La chaîne 8, le guide de chaîne 7, sont bien évidemment relies à la masse 19 donc au potentiel négatif "0". The chain 8, the chain guide 7, are obviously connected to the ground 19 therefore to the negative potential "0".
Le courant du volant magnétique de la tronçonneuse arrive en 17, il est redressé et stabilisé par l'ensemble 15. The current of the magnetic flywheel of the chainsaw arrives at 17, it is rectified and stabilized by the assembly 15.
La poignée tubulaire 1 est légèrement au potentiel posai tif par la résistance 20, donc la sortie de la porte NAND 21 est au potentiel "0", le transistor 22 est donc bloqué. The tubular handle 1 is slightly at the positive potential by the resistor 20, therefore the output of the NAND gate 21 is at the potential "0", the transistor 22 is therefore blocked.
Si l'utilisateur, tenant naturellement la poignée 1, entre en contact accidentellement avec la chaîne 8 son corps sera au potentiel "o" de la masse 19 de la machine, donc l'entrée de la porte NAND 21 le sera également. If the user, naturally holding the handle 1, accidentally comes into contact with the chain 8 his body will be at the potential "o" of the mass 19 of the machine, so the entry to the NAND gate 21 will also be.
Sa sortie basculera au potentiel positif, rendant conducteur le transistor 22 qui, laissant passer le courant, excitera l'électro-aimant 10 par le fil 12. Its output will switch to positive potential, making the transistor 22 conductive which, letting the current pass, will excite the electromagnet 10 by the wire 12.
L'axe 14 de celui-ci se rétractera, permettant la détente brusque du ressort 23. The axis 14 of it will retract, allowing the sudden relaxation of the spring 23.
La chaîne s'arrente donc net. The chain therefore stops clearly.
Si un relais 9 est prévu, une rupture de contact 13 s'effectuera, coupant l'alimentation de la bobine d'allumage et arrotant le moteur, dans le cas où le contact avec la chaîne est suffisamment prolongé. If a relay 9 is provided, a contact break 13 will occur, cutting the power to the ignition coil and stopping the engine, in the event that contact with the chain is sufficiently prolonged.
le réarmement de la machine donc la libération de la chatne 8 se fera tout simplement par action sur la poignée 5, l'axe 14 de l'électro-aimant 10 reprenant sa position initiale grâce au petit ressort 11. resetting the machine, therefore, the release of the lock 8 will be done simply by action on the handle 5, the axis 14 of the electromagnet 10 returning to its initial position thanks to the small spring 11.
En fait l'axe 14 de l'électro-aimant 10 remplace la butée d'arrêt d'origine 6 (figure 2). In fact the axis 14 of the electromagnet 10 replaces the original stopper 6 (Figure 2).
Selon un choix différent des composants électroniques, I'alimentation du détecteur de contact peut être un courant non traité, donc alternatif, venant du volant magnétique. According to a different choice of electronic components, the power supply for the contact detector can be an untreated, therefore alternating, current coming from the magnetic flywheel.
Claims (7)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8320368A FR2556643A1 (en) | 1983-12-20 | 1983-12-20 | Safety electronic contact detector |
FR8404812A FR2570017A2 (en) | 1983-12-20 | 1984-03-28 | Electronic safety contact detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8320368A FR2556643A1 (en) | 1983-12-20 | 1983-12-20 | Safety electronic contact detector |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2556643A1 true FR2556643A1 (en) | 1985-06-21 |
Family
ID=9295343
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8320368A Withdrawn FR2556643A1 (en) | 1983-12-20 | 1983-12-20 | Safety electronic contact detector |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2556643A1 (en) |
Cited By (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4882844A (en) * | 1988-12-05 | 1989-11-28 | Michael Stokan | Chain saw safety brake apparatus |
EP0544483A1 (en) * | 1991-11-28 | 1993-06-02 | Black & Decker Inc. | Electric tool with gripping sensors |
WO1996022175A2 (en) * | 1995-01-20 | 1996-07-25 | Iradj Hessabi | Safety device for electrically driven hand tools, in particular circular and compass saws |
WO1996037350A1 (en) * | 1995-05-24 | 1996-11-28 | The New Zealand Logging Industry Research Association Incorporated | Improvements in safety equipment for motor driven saws |
EP1234285A2 (en) * | 1999-10-01 | 2002-08-28 | SD3, Llc | Safety systems for power equipment |
US6813983B2 (en) | 2000-09-29 | 2004-11-09 | Sd3, Llc | Power saw with improved safety system |
US6826988B2 (en) | 2000-09-29 | 2004-12-07 | Sd3, Llc | Miter saw with improved safety system |
WO2005099981A1 (en) * | 2004-04-14 | 2005-10-27 | Werner Harrer | Chain saw |
US7640835B2 (en) | 2000-08-14 | 2010-01-05 | Sd3, Llc | Apparatus and method for detecting dangerous conditions in power equipment |
US7681479B2 (en) | 2000-08-14 | 2010-03-23 | Sd3, Llc | Motion detecting system for use in a safety system for power equipment |
US7707920B2 (en) | 2003-12-31 | 2010-05-04 | Sd3, Llc | Table saws with safety systems |
US7712403B2 (en) | 2001-07-03 | 2010-05-11 | Sd3, Llc | Actuators for use in fast-acting safety systems |
US7784507B2 (en) | 2000-09-29 | 2010-08-31 | Sd3, Llc | Router with improved safety system |
US7789002B2 (en) | 2000-09-29 | 2010-09-07 | Sd3, Llc | Table saw with improved safety system |
US7788999B2 (en) | 1999-10-01 | 2010-09-07 | Sd3, Llc | Brake mechanism for power equipment |
US7827890B2 (en) | 2004-01-29 | 2010-11-09 | Sd3, Llc | Table saws with safety systems and systems to mount and index attachments |
US7832314B2 (en) | 2000-08-14 | 2010-11-16 | Sd3, Llc | Brake positioning system |
US7836804B2 (en) | 2003-08-20 | 2010-11-23 | Sd3, Llc | Woodworking machines with overmolded arbors |
US7895927B2 (en) | 1999-10-01 | 2011-03-01 | Sd3, Llc | Power equipment with detection and reaction systems |
US7921754B2 (en) | 2000-08-14 | 2011-04-12 | Sd3, Llc | Logic control for fast-acting safety system |
US7991503B2 (en) | 2003-12-31 | 2011-08-02 | Sd3, Llc | Detection systems for power equipment |
US8061245B2 (en) | 2000-09-29 | 2011-11-22 | Sd3, Llc | Safety methods for use in power equipment |
US8065943B2 (en) | 2000-09-18 | 2011-11-29 | Sd3, Llc | Translation stop for use in power equipment |
US8100039B2 (en) | 2000-08-14 | 2012-01-24 | Sd3, Llc | Miter saw with safety system |
ITMI20101567A1 (en) * | 2010-08-24 | 2012-02-25 | Redcap Technology S R L | LOCKING DEVICE WITH CONTROLLED OPERATION FOR PORTABLE CUTTING TOOLS AND ITS CUTTING TOOL |
US8186255B2 (en) | 2000-09-29 | 2012-05-29 | Sd3, Llc | Contact detection system for power equipment |
US8413559B2 (en) | 2000-08-14 | 2013-04-09 | Sd3, Llc | Apparatus and method for detecting dangerous conditions in power equipment |
US8459157B2 (en) | 2003-12-31 | 2013-06-11 | Sd3, Llc | Brake cartridges and mounting systems for brake cartridges |
US9724840B2 (en) | 1999-10-01 | 2017-08-08 | Sd3, Llc | Safety systems for power equipment |
US9927796B2 (en) | 2001-05-17 | 2018-03-27 | Sawstop Holding Llc | Band saw with improved safety system |
US10118308B2 (en) | 2013-10-17 | 2018-11-06 | Sawstop Holding Llc | Systems to mount and index riving knives and spreaders in table saws |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1530863A (en) * | 1976-05-25 | 1978-11-01 | Yoneda K | Band knife cutting apparatus with emergency stopping system |
US4302879A (en) * | 1978-09-18 | 1981-12-01 | Beaird-Poulan Division Emerson Electric Co. | Safety braking apparatus for portable chain saw |
-
1983
- 1983-12-20 FR FR8320368A patent/FR2556643A1/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1530863A (en) * | 1976-05-25 | 1978-11-01 | Yoneda K | Band knife cutting apparatus with emergency stopping system |
US4302879A (en) * | 1978-09-18 | 1981-12-01 | Beaird-Poulan Division Emerson Electric Co. | Safety braking apparatus for portable chain saw |
Cited By (56)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4882844A (en) * | 1988-12-05 | 1989-11-28 | Michael Stokan | Chain saw safety brake apparatus |
EP0544483A1 (en) * | 1991-11-28 | 1993-06-02 | Black & Decker Inc. | Electric tool with gripping sensors |
WO1996022175A2 (en) * | 1995-01-20 | 1996-07-25 | Iradj Hessabi | Safety device for electrically driven hand tools, in particular circular and compass saws |
WO1996022175A3 (en) * | 1995-01-20 | 1996-10-24 | Iradj Hessabi | Safety device for electrically driven hand tools, in particular circular and compass saws |
WO1996037350A1 (en) * | 1995-05-24 | 1996-11-28 | The New Zealand Logging Industry Research Association Incorporated | Improvements in safety equipment for motor driven saws |
EP1234285A4 (en) * | 1999-10-01 | 2011-02-23 | Sd3 Llc | Safety systems for power equipment |
US8408106B2 (en) | 1999-10-01 | 2013-04-02 | Sd3, Llc | Method of operating power equipment with detection and reaction systems |
US9969014B2 (en) | 1999-10-01 | 2018-05-15 | Sawstop Holding Llc | Power equipment with detection and reaction systems |
US9925683B2 (en) | 1999-10-01 | 2018-03-27 | Sawstop Holding Llc | Table saws |
US8196499B2 (en) | 1999-10-01 | 2012-06-12 | Sd3, Llc | Power equipment with detection and reaction systems |
US7895927B2 (en) | 1999-10-01 | 2011-03-01 | Sd3, Llc | Power equipment with detection and reaction systems |
US9724840B2 (en) | 1999-10-01 | 2017-08-08 | Sd3, Llc | Safety systems for power equipment |
US9522476B2 (en) | 1999-10-01 | 2016-12-20 | Sd3, Llc | Power equipment with detection and reaction systems |
EP1234285A2 (en) * | 1999-10-01 | 2002-08-28 | SD3, Llc | Safety systems for power equipment |
US8291797B2 (en) | 1999-10-01 | 2012-10-23 | Sd3, Llc | Table saw with improved safety system |
US7788999B2 (en) | 1999-10-01 | 2010-09-07 | Sd3, Llc | Brake mechanism for power equipment |
US10335972B2 (en) | 1999-10-01 | 2019-07-02 | Sawstop Holding Llc | Table Saws |
US8522655B2 (en) | 2000-08-14 | 2013-09-03 | Sd3, Llc | Logic control for fast-acting safety system |
US7832314B2 (en) | 2000-08-14 | 2010-11-16 | Sd3, Llc | Brake positioning system |
US8413559B2 (en) | 2000-08-14 | 2013-04-09 | Sd3, Llc | Apparatus and method for detecting dangerous conditions in power equipment |
US9038515B2 (en) | 2000-08-14 | 2015-05-26 | Sd3, Llc | Logic control for fast-acting safety system |
US8100039B2 (en) | 2000-08-14 | 2012-01-24 | Sd3, Llc | Miter saw with safety system |
US7681479B2 (en) | 2000-08-14 | 2010-03-23 | Sd3, Llc | Motion detecting system for use in a safety system for power equipment |
US7921754B2 (en) | 2000-08-14 | 2011-04-12 | Sd3, Llc | Logic control for fast-acting safety system |
US7640835B2 (en) | 2000-08-14 | 2010-01-05 | Sd3, Llc | Apparatus and method for detecting dangerous conditions in power equipment |
US8006595B2 (en) | 2000-08-14 | 2011-08-30 | Sd3, Llc | Apparatus and method for detecting dangerous conditions in power equipment |
US8191450B2 (en) | 2000-08-14 | 2012-06-05 | Sd3, Llc | Power equipment with detection and reaction systems |
US8151675B2 (en) | 2000-08-14 | 2012-04-10 | Sd3, Llc | Logic control for fast-acting safety system |
US8065943B2 (en) | 2000-09-18 | 2011-11-29 | Sd3, Llc | Translation stop for use in power equipment |
US7784507B2 (en) | 2000-09-29 | 2010-08-31 | Sd3, Llc | Router with improved safety system |
US6813983B2 (en) | 2000-09-29 | 2004-11-09 | Sd3, Llc | Power saw with improved safety system |
US6826988B2 (en) | 2000-09-29 | 2004-12-07 | Sd3, Llc | Miter saw with improved safety system |
US8186255B2 (en) | 2000-09-29 | 2012-05-29 | Sd3, Llc | Contact detection system for power equipment |
US8061245B2 (en) | 2000-09-29 | 2011-11-22 | Sd3, Llc | Safety methods for use in power equipment |
US7789002B2 (en) | 2000-09-29 | 2010-09-07 | Sd3, Llc | Table saw with improved safety system |
US9927796B2 (en) | 2001-05-17 | 2018-03-27 | Sawstop Holding Llc | Band saw with improved safety system |
US7712403B2 (en) | 2001-07-03 | 2010-05-11 | Sd3, Llc | Actuators for use in fast-acting safety systems |
US7836804B2 (en) | 2003-08-20 | 2010-11-23 | Sd3, Llc | Woodworking machines with overmolded arbors |
US8498732B2 (en) | 2003-12-31 | 2013-07-30 | Sd3, Llc | Detection systems for power equipment |
US7707920B2 (en) | 2003-12-31 | 2010-05-04 | Sd3, Llc | Table saws with safety systems |
US8459157B2 (en) | 2003-12-31 | 2013-06-11 | Sd3, Llc | Brake cartridges and mounting systems for brake cartridges |
US8489223B2 (en) | 2003-12-31 | 2013-07-16 | Sd3, Llc | Detection systems for power equipment |
US8122807B2 (en) | 2003-12-31 | 2012-02-28 | Sd3, Llc | Table saws with safety systems |
US8087438B2 (en) | 2003-12-31 | 2012-01-03 | Sd3, Llc | Detection systems for power equipment |
US7827893B2 (en) | 2003-12-31 | 2010-11-09 | Sd3, Llc | Elevation mechanism for table saws |
US7866239B2 (en) | 2003-12-31 | 2011-01-11 | Sd3, Llc | Elevation mechanism for table saws |
US7991503B2 (en) | 2003-12-31 | 2011-08-02 | Sd3, Llc | Detection systems for power equipment |
US9623498B2 (en) | 2003-12-31 | 2017-04-18 | Sd3, Llc | Table saws |
US8505424B2 (en) | 2004-01-29 | 2013-08-13 | Sd3, Llc | Table saws with safety systems and systems to mount and index attachments |
US7827890B2 (en) | 2004-01-29 | 2010-11-09 | Sd3, Llc | Table saws with safety systems and systems to mount and index attachments |
US10052786B2 (en) | 2004-01-29 | 2018-08-21 | Sawstop Holding Llc | Table saws with safety systems and systems to mount and index attachments |
US10882207B2 (en) | 2004-01-29 | 2021-01-05 | Sawstop Holding Llc | Table saws with safety systems and systems to mount and index attachments |
WO2005099981A1 (en) * | 2004-04-14 | 2005-10-27 | Werner Harrer | Chain saw |
WO2012025458A1 (en) * | 2010-08-24 | 2012-03-01 | Redcap Technology S.R.L. | Braking arrangement with controlled actuation for portable cutting tools and cutting tool therefor |
ITMI20101567A1 (en) * | 2010-08-24 | 2012-02-25 | Redcap Technology S R L | LOCKING DEVICE WITH CONTROLLED OPERATION FOR PORTABLE CUTTING TOOLS AND ITS CUTTING TOOL |
US10118308B2 (en) | 2013-10-17 | 2018-11-06 | Sawstop Holding Llc | Systems to mount and index riving knives and spreaders in table saws |
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Legal Events
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ST | Notification of lapse |