EP0303651B2 - Procede d'interruption de l'entrainement, en particulier en percussion et/ou en rotation, d'un outil a main - Google Patents

Procede d'interruption de l'entrainement, en particulier en percussion et/ou en rotation, d'un outil a main Download PDF

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Publication number
EP0303651B2
EP0303651B2 EP88901798A EP88901798A EP0303651B2 EP 0303651 B2 EP0303651 B2 EP 0303651B2 EP 88901798 A EP88901798 A EP 88901798A EP 88901798 A EP88901798 A EP 88901798A EP 0303651 B2 EP0303651 B2 EP 0303651B2
Authority
EP
European Patent Office
Prior art keywords
hand
coupling
machine tool
operated machine
drive
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
EP88901798A
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German (de)
English (en)
Other versions
EP0303651A1 (fr
EP0303651B1 (fr
Inventor
Wolfgang Schmid
Ludwig Thome
Karl Wanner
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
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Filing date
Publication date
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Priority claimed from DE19873707051 external-priority patent/DE3707051A1/de
Priority claimed from DE19873707052 external-priority patent/DE3707052A1/de
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0303651A1 publication Critical patent/EP0303651A1/fr
Application granted granted Critical
Publication of EP0303651B1 publication Critical patent/EP0303651B1/fr
Publication of EP0303651B2 publication Critical patent/EP0303651B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D16/00—Portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2211/00—Details of portable percussive tools with electromotor or other motor drive
    • B25D2211/06—Means for driving the impulse member
    • B25D2211/061—Swash-plate actuated impulse-driving mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/131—Idling mode of tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/221—Sensors

Definitions

  • the invention is based on a method for interrupting the drive activity a handheld machine tool according to the generic The preamble of claims 1 or 3.
  • EP 150 669 A2 already states such a handheld machine tool with one accommodated in its interior Container known in which an electrically conductive, liquid mass is located. This mass is penetrated by a magnetic field, which, when the machine rotates, can be tapped off at electrodes electrical voltage induced. Measurement of inertial forces is only possible with a relatively large expenditure on equipment, moreover If the machine is intended to move, it can also trigger incorrectly the safety clutch.
  • the clutch is thus dependent automatically engaged by a force that the operator has to be applied by firmly pressing the hand machine tool. This makes handling difficult.
  • features of claim 1 have the following Advantages.
  • the user can therefore work in a relaxed and relaxed manner without he for maintaining the percussion drive each has to constantly apply special pressure forces.
  • the handling of the hand machine tool is thereby much simplified. It is more convenient to use achieved.
  • Another advantage is that any other idling devices or catching devices are unnecessary and by the inventive method almost any short idling distances are possible.
  • the idle travel can thus be significantly reduced, resulting in a quicker response and more direct operation of the hand tools machine leads.
  • Depending on the construction of the hand machine tool thereby also a reduction in the axial length in the axial direction of the Tool holder possible.
  • the conditions are created for to simplify the coupling if necessary, since you do not necessarily have to a cone coupling with axially pressable cone halves is.
  • the invention is based on the basic knowledge that the Blocking of a rotating tool starting swiveling movement of the Hand tool, especially a rotary hammer, even as Signal for the interruption of the drive activity, in particular rotary drive activity, and not a force-dependent one Size, e.g. B. a torque in the power flow of the rotary drive.
  • a force-dependent one Size e.g. B. a torque in the power flow of the rotary drive.
  • the invention also relates to a handheld power tool the features in the preamble of claim 11. According to the invention such a hand machine tool by the features in the labeling part of claim 11 characterized. Advantageous further training and Improvements in such a handheld power tool result from the features in claims 12-29.
  • the handheld power tool thus designed is relatively simple in construction and inexpensive. Since she has the advantages explained at the beginning, this justifies the overall only little additional effort, also with regard to the reliable achieved Safety and easier handling for the user.
  • a hand tool is shown schematically, which consists of a hammer drill or the instead of a pure hammer for chisel operation can exist.
  • hammers are basic known (DE-AS 12 06 817).
  • the hammer drill shown has a housing 10 in which an electrical Drive motor 11, which is designed as a universal motor, a gear 12 and a striking mechanism 13 are also arranged are.
  • the hammer drill is e.g. corresponding DE-OS 28 20 128 designed to expressly here Reference is made so that special details of the Gear 12 and the striking mechanism 13 are not in detail must be explained.
  • the drive motor 11 carries on the motor shaft 14 Motor pinion 15, which is in engagement with a gear 16 stands, which is rotatably held on a shaft 17.
  • Motor pinion 15 which is in engagement with a gear 16 stands, which is rotatably held on a shaft 17.
  • a drum 18 On the shaft 17 is rotatably seated a drum 18 as part a striking mechanism 13, the driving pin fixed to it 19 with play in a transverse bore of a pivot pin 20 intervenes, which in turn in a fork-shaped End of a drive piston 21 is supported.
  • the drive piston 21 is designed and acted upon as a hollow piston an air cushion to move one inside mounted racket 22.
  • the drum 18 axially back and forth driven drive piston 21 of the Percussion mechanism 13 drives the racket via the air cushion 22, who uses his impact energy e.g. about one not further shown strikers or directly on one in one Tool holder 23 delivers inserted tool 24.
  • the Tool 24 is e.g. from a drill. Also
  • the tool 24 is only indicated schematically Rotating sleeve 25 of the gear 12 can be driven in rotation.
  • the rotary sleeve 25 carries a non-rotatable one Gear 26 meshing with a pinion 27 stands that is rotationally fixed or via a special safety coupling is coupled to the shaft 17.
  • Such Safety clutch in one embodiment is e.g. in the DE-OS 28 20 128 described, to which reference is made here can be.
  • This clutch is in the rotary drive drivetrain before the branch of the striking mechanism 13 arranged. It is namely the one shown Embodiment between the driven by the motor pinion 15 Gear part in the form of the gear 16 and Shaft 17 on the one hand and the one driving the striking mechanism 13 Gear train, on the other hand, to which the shaft 17 e.g. non-rotatable drum 18 and those driven by it Parts of the striking mechanism 13 belong, which are explained at the beginning are.
  • the clutch 28 is instead behind the shown branch where it is in the pure percussion drive branch is arranged, e.g. between the shaft 17 on the one hand and the drum 18 on the other hand, so that when disengaged Coupling 28 of the drive of the drum 18 interrupted is and thus the striking mechanism 13 stands still, even if the one with the shaft still driven and rotating 17 rotary drive driven above it not interrupted is, but is still effective.
  • the clutch 28 is a function of a size automatically disengaged with an interruption of the drive activity at least the striking mechanism 13. In this case becomes the one on the left of the coupling 28 in FIG. 1 Gearbox complex not driven, so in this Case in addition to the striking mechanism 13, which stands still, then also the rotating sleeve 25 and the tool 24 Drive also stops. Is the clutch 28 instead, between shaft 17 and drum 18 arranged, is only when clutch 28 disengaged Schlagtechnik 13 silent.
  • the clutch 28 is here as a clutch educated. It consists in particular of one non-positive clutch, e.g. from a friction clutch.
  • the clutch 28 is a servo clutch trained by means of the existing, from the drive motor 11 diverted energy, e.g. by means of electrical or electromechanical energy, is controllable.
  • the clutch 28 may also be designed as a positive coupling, e.g. as a claw coupling. Then the clutch 28 should the branch of the striking mechanism 13 and be arranged 1 shows, so that additionally when the clutch is disengaged the rotary drive to the striking mechanism 13 is also stopped is. It is also recommended that you then disengage the clutch 28 also turn off the drive motor 11 and stop, so that later when you re-engage the clutch 28 engages again at a standstill can be done.
  • the handheld power tool also contains one only schematically indicated sensor 30, which is inside the housing 10 is fixed.
  • the sensor 30 is in particular as electrical sensor trained. But it can also take place its as a mechanical or electromechanical sensor be designed.
  • the sensor 30 stands with the clutch 28 in operative connection and acts on the clutch 28 as soon as he responds.
  • the sensor 30 is designed as an idle sensor, the size of reaching one on the idle line (Fig. 3) located position of the tool 24 or a translationally moving part of the striking mechanism 13 detected and then the clutch 28 for automatic Disengagement applied.
  • the idle sensor is in able to leave this path position in the direction To record the stroke position automatically and then the clutch 28 for automatic re-engagement to act upon.
  • the senor 30 is e.g. designed as an electrical limit switch.
  • a control device 34 e.g. a switching logic, with which the sensor 30 is connected, the sensor 30 when activated the control device 34 can activate.
  • the sensor 30 can e.g. designed as an electromagnetic sensor be the control device when said path position is reached 34 activated.
  • the control device 34 stands in turn with the clutch 28 to disengage it and re-engagement in operative connection (Fig. 2, 4). If the sensor 30 responds, the control device is activated 34 activated, which in turn the clutch 28 electrical or electromechanical, e.g. electromagnetic, disengages.
  • the tool 24 carries out an oscillating movement from that over a distance of 1/3 of the total Translation path is performed.
  • the sensor 30 is e.g. B. not placed in this area, but, in Fig.3 seen from right to left, at least in the second or better still in the third third and thus in one area the tool 24 or a reciprocatingly driven one Part of the striking mechanism 13 only in the idle position reached.
  • the sensor 30 is on this idle distance e.g. placed so that it from the idle position going tool 24 is passed and in the idle position the end of the tool 24 left and there is at a distance from the sensor 30 so that the sensor 30 this as a criterion for idle operation and loading the clutch 28 is detected for disengagement. Then the sensor 30 could e.g.
  • the core idea is that in the field operation the idle position of the tool 24 or one back and forth part of the striking mechanism 13 from Sensor 30 is detected and then the clutch 28th is controlled so that it disengages. Once the tool 24 or said part of the striking mechanism 13 of this idle position by moving in Fig. 1, 3 after is shifted to the right in the striking position, this will also detected by sensor 30 and clutch 28 pressured to re-engage. It doesn't come with everything on any to be applied by the user of the hand machine tool Force to indent for the field operation the clutch and automatically when idling To disengage the clutch. Rather, it is one reliable and high quality idle shutdown created, no additional operators for the user or engaging forces. Special idling facilities or catching devices or the like are in such Handheld machine tools are therefore unnecessary. Advantageous is also possible that almost any short idling distances are that can be used.
  • Fig. 2 and in particular 4 is indicated how the sensor 30 indirectly applied to the clutch 28.
  • the control device 34 in particular Switching logic, which in turn is a control pulse in terms of disengaging the clutch on an electromechanical, e.g. electrical, actuator, in particular Release actuator 35, which then leads to the Clutch 28 engages to disengage them.
  • the clutch 28 also from the sensor 30 via the control device 34 causes, which in turn one Control pulse e.g. to an actuator in the form of a Engagement actuator 36 leads to the clutch 28th attacks to engage them.
  • the engagement actuator 36 of the Controller 34 e.g. electromechanical, in particular electromagnetic, operated.
  • a hand-held power tool is shown schematically, which consists of a hammer drill here.
  • the hammer drill has a housing 10 in which an electrical Drive motor 11, which is designed as a universal motor, a gear 12 and a striking mechanism 13 are also arranged are.
  • the hammer drill is e.g. corresponding DE-OS 28 20 128 designed to expressly here Reference is made so that special details of the transmission 12 and the striking mechanism 13 are not explained have to.
  • the drive motor 11 carries on the motor shaft 14 Motor pinion 15, which is in engagement with a gear 16 stands, which is rotatably held on a shaft 17.
  • a drum 18 sits on the shaft 17 in a rotationally fixed manner as part of the striking mechanism 13, the driver pin attached to it 19 with play in a transverse bore of a pivot pin 20 intervenes, which in turn in a fork-shaped End of a drive piston 21 is supported.
  • the drive piston 21 is designed and acted upon as a hollow piston an air cushion to move one inside mounted racket 22.
  • the drum 18 axially reciprocating driven piston 21 of the Percussion mechanism 13 drives the racket via the air cushion 22, who hits his energy directly into one Tool holder 23 delivers inserted tool 24.
  • the tool 24 is e.g. from a drill. Also different All types of tools can be accommodated in the tool holder 23 become.
  • the tool 24 is only indicated schematically Rotating sleeve 25 of the gear 12 can be driven in rotation.
  • the rotary sleeve 25 carries a non-rotatable one Gear 26, which is in engagement with a pinion 27, that is fixed against rotation or via a special safety coupling is coupled to the shaft 17.
  • a safety clutch is also described in DE-OS 28 20 128 referred to.
  • This clutch 28 is in Rotary drive drive train in front of the branch of the striking mechanism 13 arranged. It is between the gear part driven by the motor pinion 15 in Shape of the gear 16 and the shaft 17 on the one hand and the gear train driving the striking mechanism 13, on the other hand, in the form of the drum 18 which is rotatably fixed to the shaft 17 and the driven parts of the striking mechanism 13, as explained at the beginning.
  • the clutch 28 behind the shown Branch in the pure rotary drive branch, e.g. on the Shaft 17 or between the pinion 27 and its drive from the shaft 17.
  • the clutch 28 is dependent on an overload size automatically disengaged with an interruption of the drive activity.
  • the one in Fig. 5 becomes left not the clutch 28 adjoining gear complex driven, so that in this case both the striking mechanism 13 stands still as well as the rotating sleeve 25 and that Tool 24 rotating drive.
  • the clutch 28 is here designed as a clutch. This can e.g. as positive coupling designed, in this case e.g. as a claw coupling. Then it is advisable to This clutch 28 also disengages the drive motor 11 turn off and shut down, so later when you re-engage the clutch 28 in the manner described Can be re-engaged at a standstill. Instead can, as shown, the clutch 28 as a frictional Clutch may be formed, e.g. as a friction clutch.
  • the clutch 28 is designed as a servo clutch, by means of the existing drive motor 11 diverted energy, e.g. by means of electrical or electro-mechanical energy, is controllable.
  • the handheld power tool also has one only schematically indicated sensor 130, which is firmly connected to the housing 10, expediently is located inside the housing 10.
  • Sensor 130 is an electrical or mechanical or electromechanical sensor trained.
  • the sensor 130 is in operative connection with the clutch 28 (Fig. 6-10) and acts on the clutch 28 Exceeding a movement size of the hand-held Hand tool.
  • the sensor 130 formed as a twist sensor, which as Movement size the way and / or the speed and / or the acceleration of an external pivotal movement of the hand-held hand tool in the room around a rotary drive axis 31 of the driven tool 24 is detected.
  • the hand tool also has one from the machine exterior accessible, in particular manually operated, Engagement adjuster 32, which e.g. from an operating button consists.
  • Engagement adjuster 32 which e.g. from an operating button consists.
  • the clutch 28 is disengaged has been activated by means of the engagement adjuster 32 directly or indirectly and mechanically, electrically or be re-engaged electromagnetically.
  • the sensor 130 is designed as a mechanical inertia switch and mechanically with an indicated lever 33 the clutch 28 coupled to disengage them.
  • the lever 30 carrying the sensor 30 is about one schematically indicated pivot axis 38, which is approximately parallel runs to the central axis of the clutch 28 in the housing 10 freely pivoted, with an approximately U-shaped Claw dimensioned and designed at the end of the lever 33 is that the clutch 28 in the engaged state 9 and 10 in this engaged state can.
  • the claw is e.g. approximately radially from the outside both compressed coupling halves brought up, which are attacked together by the claw so that the release spring 29 remains in the compressed state and the clutch 28 can not disengage.
  • the direction of rotation of the drive is schematically indicated by arrow 41 symbolizes the tool 24. If the tool 24 e.g. blocked in the rock, the hand machine tool hurled around in the direction of arrow 40.
  • the sensor 30 responds, which in this exemplary embodiment then as a mechanical inertia switch together with the lever 33 and the one engaging on the clutch 28 Claw about the pivot axis 38 in the direction of the arrow 39 and is pivoted so that the claw at the end of the lever 33 releases both coupling halves of the clutch 28, so that the compressed release spring 29 the Clutch 28 automatically in the disengaged position 8 can transfer.
  • FIG. 8 shows an engagement actuator 32 schematically, the mechanically via a separate lever 37 with the clutch 28 is coupled to their engagement.
  • the engaging button 32 is pressed mechanically via the lever 37 the left half in FIG. 8 by compressing the Release spring 29 pushes against the right coupling half, until the indented position according to FIG. 9 is reached, in which the claw then automatically at the end of the lever 33 over both compressed coupling halves of the clutch 28 takes hold.
  • each of these the control device can activate when it becomes effective.
  • the control device 34 in the event of an overload activated.
  • the control device 34 stands with the clutch 28 to disengage and re-engage in operative connection (Fig. 6, 7). Speaks the sensor 130 on, the control device 34 is activated above it, which in turn the clutch 28 electrically or electromechanically, e.g. electromagnetic, disengages. Then from outside the engagement actuator 32 is actuated and lies there is no overload, the operation of the The engagement device 32 also the control device 34 activated, which is now the clutch 28 in the sense of a Activates again.
  • the sensor 130 can be designed so that it as a movement quantity recorded a path that the hand machine tool goes through. The path comes e.g. the swivel angle a pivoting movement of the hand tool around Rotary drive axis 31 into consideration, the rotation sensor 30 then e.g. when exceeding a permissible swivel movement from e.g. 10 ° swivel angle and described in Disengaging the clutch 28 causes.
  • the Sensor 130 can use the Sensor 130 as the movement variable also the speed and / or detect acceleration with which the handheld power tool moved in space.
  • the main idea here is the one that starts when the driven tool 24 is blocked Rotation of the housing 10 of the hand machine tool - so he is given an angular momentum - itself as a signal to use the rotary actuator if this movement size is exceeded by disengagement to turn off the clutch 28. Then the rotary drive interrupted so that the rotary actuation of the tool 24th ceases while the clutch 28 in FIG located drive part, in particular drive motor 11 with gear 15, 16, can continue to rotate freely.
  • the clutch 28 disengages.
  • the clutch is disengaged immediately 28 mechanically via the lever 33.
  • the indirect Actuation activates the sensor 130 when the predetermined value of the movement size the control device 34, in particular switching logic, which in turn then a control pulse in the sense of disengaging the clutch to an electromechanical, e.g. electric actuator in particular disengaging actuator 35, which then engages the clutch 28 to disengage it.
  • the specified value of the movement quantity is the has caused the clutch 28 to disengage clutch 28 is engaged again e.g. by manually pressing in the engagement adjuster 32 initiated, which then directly or indirectly and mechanically, electrically or electromechanically causes clutch 28 to re-engage.
  • Embodiment according to Fig.8-10 takes place by means of Indentor 32 an immediate and mechanical Re-engagement of the clutch 28.
  • the control device 34 in particular switching logic, activated, which in turn a control pulse e.g. on an actuator in Form of an engagement actuator 36, which leads to the Clutch 28 engages to engage them.
  • the engagement actuator 36 is controlled by the control device 34 e.g. electromechanical, in particular electromagnetic, operated.
  • FIGS. 11 and 12 show two further exemplary embodiments of the Invention shown.
  • a drill hammer is shown in FIG which the clutch 28 is arranged behind the striking mechanism.
  • the clutch 28 is located in the drive train between clutch 28 and Tool 24 a holding device 50, via which the named Drive train is connectable to the housing 10 of the hammer drill.
  • the holding device 50 is known as being electrical releasable brake executed.
  • the brake 50 is actuated at the same time but ultimately the casing of the rotary hammer the tool 24 firmly connected.
  • This can the angular momentum, for example when blocking of the drilling tool 24 in the workpiece in the housing 10 has been issued and which to trigger the Coupling 28 has to be caught. Injuries of the operator by the described This reliably prevents angular momentum.
  • the invention is the clutch 28 and the holding device (brake 50) already in the drive train between engine 11 and Percussion.
  • the striking mechanism stopped when the clutch 28 is triggered becomes.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

Un procédé permet de mettre hors circuit pendant la marche à vide un marteau perforateur et/ou un trépan à tranchement. Un embrayage (28) agencé au moins dans la chaîne cinématique de percussion est automatiquement désengagé lorsque le point mort est atteint. Le moment où l'outil (24) atteint une position située sur la course de marche à vide est détecté et l'embrayage (28) est automatiquement désengagé lorsque cette position est atteinte et enclenché à nouveau lorsque l'outil quitte cette position. A cet effet, un détecteur de marche à vide (30) provoque électromécaniquement l'engagement et le désengagement de l'embrayage (28) par l'intermédiaire d'un dispositif de commande (34). L'ouvrier maniant le marteau perforateur n'a donc pas besoin d'exercer d'efforts supplémentaires d'actionnement ou d'embrayage afin de mettre en et hors circuit l'outil à percussion, ce qui réduit le temps de marche à vide.

Claims (29)

  1. Procédé d'interruption de l'entraínement en percussion d'une machine manuelle, dans la ligne de transmission reliant le moteur (11) à l'outil (24) entraíné en percussion et/ou en rotation, un embrayage (28) monté dans la ligne d'entraínement débrayant lorsque l'on atteint une grandeur prédéterminée, détectée par un capteur (30), cette grandeur, indépendante de la force de maintien exercée par l'utilisateur, représentant une grandeur de mouvement d'une partie de la machine manuelle ou de l'outil (24), partie en mouvement de translation,
    caractérisé en ce que
    comme grandeur de déplacement, on détecte sur la course à vide une position de déplacement déterminée d'une pièce du mécanisme de frappe ou de l'outil (24) et l'embrayage (28) s'embraye automatiquement de nouveau lorsqu'on quitte cette position de déplacement, le capteur (30) activant une installation de commande (34), notamment une logique de commutation, lorsqu'on atteint cette position de déplacement, cette installation de commande transmettant une impulsion de commande à un moyen d'entraínement de réglage (35), notamment électromécanique, par exemple électromagnétique, notamment un moyen de débrayage, agissant sur l'embrayage (29) pour en commander le débrayage.
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    le capteur (30) active l'installation de commande (34), notamment la logique de commutation, en quittant la position de déplacement en direction de la position de percussion et l'installation de commande (34) transmet à son tour une impulsion de commande à un moyen d'entraínement de réglage (38), notamment électromécanique, par exemple électromagnétique, notamment un moyen d'embrayage qui agit sur l'embrayage (28) pour l'embrayer.
  3. Procédé d'interruption de l'entraínement en rotation d'une machine manuelle, dans la ligne de transmission reliant le moteur (11) à l'outil (24) entraíné en percussion et/ou en rotation, selon lequel, un embrayage prévu dans la ligne de transmission est débrayé automatiquement en fonction d'une grandeur détectée par un capteur (130) lorsqu'elle atteint une valeur prédéterminée, la grandeur, indépendante de la force de maintien exercée par l'utilisateur, représentant une grandeur de mouvement de la machine manuelle, prise dans son ensemble ou de parties entraínées par celle-ci,
    procédé caractérisé en ce que
    la grandeur de mouvement détectée est une course exécutée par la machine manuelle et en ce que la ligne de transmission est reliée dans le même temps au bâti (10) de la machine manuelle par un dispositif de fixation (50) entre l'embrayage (28) et l'outil (24).
  4. Procédé d'interruption de l'entraínement en rotation d'une machine manuelle dans la ligne de transmission reliant le moteur (11) à l'outil (24) entraíné en percussion et/ou en rotation, selon lequel, un embrayage prévu dans la ligne de transmission débrayant lorsqu'on atteint une grandeur détectée par un capteur (30) lorsqu'elle atteint une valeur prédéterminée, cette grandeur étant indépendante de la force de maintien exercée par l'utilisateur représentant une grandeur de mouvement de la machine manuelle prise dans son ensemble ou de parties entraínées par cette machine,
    procédé caractérisé en ce que
    la grandeur de mouvement est la vitesse à laquelle se déplace la machine manuelle guidée à la main, dans l'espace, et en ce que la ligne de transmission est reliée dans le même temps au bâti (10) de la machine manuelle par un dispositif de fixation (50) entre l'embrayage (28) et l'outil (24)
  5. Procédé d'interruption de l'entraínement en rotation d'une machine manuelle dans la ligne de transmission reliant le moteur (11) à l'outil (24) entraíné en percussion et/ou en rotation, selon lequel, un embrayage prévu dans la ligne de transmission débrayant lorsqu'on atteint une grandeur détectée par un capteur (30) lorsqu'elle atteint une valeur prédéterminée, cette grandeur étant indépendante de la force de maintien exercée par l'utilisateur représentant une grandeur de mouvement de la machine manuelle prise dans son ensemble ou de parties entraínées par cette machine,
    caractérisé en ce que
    comme grandeur de mouvement, on détecte l'accélération de la machine manuelle dans l'espace, et en ce que la ligne de transmission est reliée dans le même temps au bâti (10) de la machine manuelle par un dispositif de fixation (50) entre l'embrayage (28) et l'outil (24).
  6. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que
    le capteur (30) débraye directement et mécaniquement l'embrayage (28) lors du dépassement de la valeur prédéterminée de la grandeur de mouvement.
  7. Procédé selon l'une des revendications précédentes 3 à 5,
    caractérisé en ce qu'
    en cas de dépassement de la valeur prédéterminée de la grandeur de mouvement, le capteur (30) active une installation de commande (34), notamment une logique de commutation qui transmet à son tour une impulsion de commande, notamment un moyen d'entraínement de réglage (35) électromécanique par exemple électromagnétique, notamment un moyen de débrayage, qui agit sur l'embrayage (28) pour le débrayer.
  8. Procédé selon l'une des revendications précédentes,
    caractérisé en ce qu'
    après débrayage de l'embrayage (28) et pour passer en-dessous de la valeur prédéterminée de la grandeur de mouvement, l'embrayage (28) peut le cas échéant être embrayé, en particulier par commande manuelle, d'un organe d'embrayage (32), d'une manière mécanique, électrique ou électromagnétique, directe ou indirecte.
  9. Procédé selon la revendication 8,
    caractérisé en ce que
    l'organe d'embrayage (32) embraye l'embrayage (28) directement et de manière mécanique.
  10. Procédé selon la revendication 9,
    caractérisé en ce que
    lorsqu'il est actionné, l'organe d'embrayage (32) active l'installation de commande (34), notamment la logique de commutation, qui transmet à son tour une impulsion de commande à un moyen d'entraínement de réglage (36), notamment électromécanique. par exemple électromagnétique, notamment un moyen d'embrayage qui agit sur l'embrayage (28) pour embrayer.
  11. Machine manuelle, notamment perforateur, dont la ligne de transmission reliant le moteur (11) à l'outil (24) compatie un embrayage, qui peut être débrayé pour interrompre l'entraínement en percussion, en fonction d'une grandeur mesurée, notamment pour la mise en oeuvre du procédé selon la revendication 1,
    caractérisée en ce que
    l'embrayage est constitué par un embrayage (28) de liaison par la forme ou par la force et la machine manuelle comporte un capteur (30) en particulier électrique, mécanique ou électromécanique, monté de préférence fixe, qui détecte la position de marche à vide lors de l'entraínement en percussion, et coopère avec l'embrayage de commutation (28) et agit sur celui-ci pour débrayer automatiquement lorsqu'on dépasse la grandeur mesurée.
  12. Machine manuelle, notamment perforateur, dont la ligne de transmission reliant le moteur (11) à l'outil entraíné (24) comporte un embrayage, qui peut dire débrayé automatiquement pour interrompre l'entraínement en rotation en fonction d'une grandeur mesurée, notamment pour la mise en oeuvre du procédé selon les revendications 3, 4 ou 5,
    caractérisée en ce que
    l'embrayage est un embrayage (28) à liaison par la forme ou par la force et la machine manuelle comporte un capteur en particulier électrique, mécanique ou électromécanique (130), monté de préférence fixe, qui coopère avec l'embrayage (28), l'embrayage étant un embrayage à ressort actionné de manière électromagnétique lors du dépassement de la grandeur et le capteur (30) sollicite l'embrayage (28) pour le débrayer automatiquement lors du dépassement de la grandeur mesurée, la transmission en rotation de l'outil (24) et/ou de l'outil de frappe (13) peut être reliée sur bâti (10) de la machine manuelle par un dispositif de fixation (50).
  13. Machine manuelle selon la revendication 11 ou 12,
    caractérisée en ce que
    le capteur (30) est un commutateur de fin de course.
  14. Machine manuelle selon l'une des revendications 11 à 13,
    caractérisée en ce que
    le capteur (30) est un capteur électromagnétique coopérant avec une installation de commande (34), notamment une logique de commutation, à l'intérieur de la machine manuelle, et qui active cette installation lorsqu'on atteint la position de déplacement et en ce que l'installation de commande (34) coopère avec l'embrayage (28) pour débrayer et embrayer de nouveau.
  15. Machine manuelle selon l'une des revendications 11 à 14,
    caractérisée en ce que
    l'embrayage (28) est un embrayage asservi actionné en prenant de l'énergie électrique ou électromécanique du moteur (11) de la machine manuelle.
  16. Machine manuelle selon l'une des revendications 11 à 15,
    caractérisée par
    un moyen d'entraínement de réglage, notamment un moyen de débrayage (35) et/ou un moyen d'embrayage (36) électromécanique, notamment électromagnétique, pour l'embrayage (28) et qui est commandé par l'installation de commande (34).
  17. Machine manuelle selon l'une des revendications 11 à 16,
    caractérisée en ce que
    l'embrayage (28) comporte au moins un ressort de débrayage (29) précontraint et verrouillé à l'état embrayé, qui débraye automatiquement l'embrayage (28) lorsque le débrayage est actionné, en se détendant, et qui se tend et se verrouille de nouveau lors de la manoeuvre d'embrayage de l'embrayage (28).
  18. Machine manuelle selon l'une des revendications 11 à 17,
    caractérisée en ce que l'embrayage (28) est prévu dans la ligne de transmission du mécanisme de frappe ou notamment dans la ligne de transmission de l'entraínement en rotation, de préférence en amont de sa dérivation vers l'entraínement en percussion du perforateur.
  19. Machine manuelle selon la revendication 18,
    caractérisée en ce que
    l'embrayage (28) est prévu dans la ligne de transmission entre, d'une part, la transmission (16, 17) entraínée à partir du pignon (15) du moteur et, d'autre part, la transmission reliée au mécanisme de percussion (13).
  20. Machine manuelle selon la revendication 12,
    caractérisée en ce que
    le capteur (30) est un capteur de torsion qui mesure comme grandeur de mouvement, la course et/ou la vitesse et/ou l'accélération d'un mouvement de pivotement extérieur à la machine guidée manuellement, dans l'espace, autour d'un axe d'entraínement en rotation (31) de l'outil (24) entraíne.
  21. Machine manuelle selon la revendication 20,
    caractérisée en ce que
    le capteur (30) est un capteur mécanique à inertie.
  22. Machine manuelle selon la revendication 21,
    caractérisée en ce que
    le capteur mécanique à inertie est couplé mécaniquement par un levier (33) à l'embrayage (28) pour en assurer le débrayage et coopère avec celui-ci.
  23. Machine manuelle selon l'une des revendications 12, 14, 20, 21 ou 22,
    caractérisée par
    un organe d'embrayage (32) qui se commande de l'extérieur de la machine, notamment un organe de commande manuelle, qui permet d'embrayer de nouveau l'embrayage (28), directement ou indirectement, de manière mécanique, électrique ou électromécanique.
  24. Machine manuelle selon la revendication 23,
    caractérisée en ce que l'organe d'embrayage (32) est couplé mécaniquement par un levier (37) à l'embrayage (28) pour assurer le mouvement d'embrayage en coopérant avec cet embrayage.
  25. Machine manuelle selon la revendication 23,
    caractérisée en ce que
    l'organe d'embrayage (32) est relié à l'installation de commande (34), notamment à la logique de commutation, et cette logique est activée lorsque l'organe est manoeuvre.
  26. Machine manuelle selon l'une des revendications 12, 17, 20 à 25,
    caractérisée en ce que
    l'embrayage (28) est prévu dans la ligne de transmission de l'entraínement en rotation. en amont ou en aval de sa dérivation, vers l'entraínement du perforateur.
  27. Machine manuelle selon la revendication 26,
    caractérisée en ce que
    l'embrayage (28) est prévu dans la ligne de transmission entre, d'une part, la transmission (16, 17) entraínée en sortie par le pignon (15) du moteur, et, d'autre part, la ligne de transmission reliée à l'outil de percussion (13).
  28. Machine manuelle selon l'une des revendications précédentes,
    caractérisée en ce que
    la ligne d'entraínement est reliée entre l'embrayage (28) et l'outil (24) par une installation de maintien (50), notamment un frein, pour être reliée au boítier (10) de la machine manuelle lorsque la ligne de transmission vers le moteur (11) est interrompue par l'embrayage (28).
  29. Machine manuelle selon la revendication 28,
    caractérisée en ce que
    l'installation de maintien (50) relie la ligne de transmission pour l'entraínement en rotation de l'outil (24) et/ou le mécanisme de percussion (13) avec le boítier de la machine manuelle.
EP88901798A 1987-03-05 1988-03-02 Procede d'interruption de l'entrainement, en particulier en percussion et/ou en rotation, d'un outil a main Expired - Lifetime EP0303651B2 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19873707051 DE3707051A1 (de) 1987-03-05 1987-03-05 Verfahren zum unterbrechen der antriebstaetigkeit, insbesondere zumindest der schlagantriebstaetigkeit, einer handwerkzeugmaschine
DE19873707052 DE3707052A1 (de) 1987-03-05 1987-03-05 Verfahren zum unterbrechen der antriebstaetigkeit, insbesondere drehantriebstaetigkeit, einer handwerkzeugmaschine
DE3707052 1987-03-05
DE3707051 1987-03-05
PCT/DE1988/000109 WO1988006508A2 (fr) 1987-03-05 1988-03-02 Procede d'interruption de l'entrainement, en particulier en percussion et/ou en rotation, d'un outil a main

Publications (3)

Publication Number Publication Date
EP0303651A1 EP0303651A1 (fr) 1989-02-22
EP0303651B1 EP0303651B1 (fr) 1993-09-29
EP0303651B2 true EP0303651B2 (fr) 1999-12-01

Family

ID=25853140

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88901798A Expired - Lifetime EP0303651B2 (fr) 1987-03-05 1988-03-02 Procede d'interruption de l'entrainement, en particulier en percussion et/ou en rotation, d'un outil a main

Country Status (3)

Country Link
EP (1) EP0303651B2 (fr)
DE (1) DE3884522D1 (fr)
WO (1) WO1988006508A2 (fr)

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DE10117123A1 (de) * 2001-04-06 2002-10-17 Bosch Gmbh Robert Handwerkzeugmaschine
US7055620B2 (en) 2001-04-06 2006-06-06 Robert Bosch Gmbh Hand-held machine tool
US8286723B2 (en) 2010-01-07 2012-10-16 Black & Decker Inc. Power screwdriver having rotary input control
US8418778B2 (en) 2010-01-07 2013-04-16 Black & Decker Inc. Power screwdriver having rotary input control
USRE44311E1 (en) 2004-10-20 2013-06-25 Black & Decker Inc. Power tool anti-kickback system with rotational rate sensor
DE102015221685A1 (de) 2015-11-05 2017-05-11 Robert Bosch Gmbh Schutzvorrichtung
DE102016203925A1 (de) 2016-03-10 2017-09-14 Robert Bosch Gmbh Schutzvorrichtung
DE102016210759A1 (de) 2016-06-16 2017-12-21 Robert Bosch Gmbh Handwerkzeugmaschine
DE102017213424A1 (de) 2017-08-02 2019-02-07 Robert Bosch Gmbh Handwerkzeugmaschine

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DE10033362A1 (de) * 2000-07-08 2002-01-17 Hilti Ag Elektrohandwerkzeug mit Leerschlagabschaltung
DE10111717C1 (de) 2001-03-12 2002-10-24 Wacker Werke Kg Luftfederschlagwerk mit bewegungsfrequenzgesteuertem Leerlaufzustand
DE10160864A1 (de) * 2001-12-12 2003-06-26 Hilti Ag Axial schlagendes Elektrohandwerkzeuggerät
DE10237898B3 (de) * 2002-08-19 2004-03-18 Hilti Ag Sicherheitsmodul für multifunktionale, drehend und schlagend arbeitende Handwerkzeugmaschine
EP1607186A1 (fr) * 2004-06-18 2005-12-21 HILTI Aktiengesellschaft Perceuse à percussion / marteau piqueur électro-pneumatique à énergie d'impact modifiable
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US6843327B2 (en) 2001-04-06 2005-01-18 Robert Bosch Gmbh Manual machine tool
US7055620B2 (en) 2001-04-06 2006-06-06 Robert Bosch Gmbh Hand-held machine tool
DE10117123A1 (de) * 2001-04-06 2002-10-17 Bosch Gmbh Robert Handwerkzeugmaschine
USRE44993E1 (en) 2004-10-20 2014-07-08 Black & Decker Inc. Power tool anti-kickback system with rotational rate sensor
USRE45112E1 (en) 2004-10-20 2014-09-09 Black & Decker Inc. Power tool anti-kickback system with rotational rate sensor
USRE44311E1 (en) 2004-10-20 2013-06-25 Black & Decker Inc. Power tool anti-kickback system with rotational rate sensor
US8286723B2 (en) 2010-01-07 2012-10-16 Black & Decker Inc. Power screwdriver having rotary input control
US8418778B2 (en) 2010-01-07 2013-04-16 Black & Decker Inc. Power screwdriver having rotary input control
DE102015221685A1 (de) 2015-11-05 2017-05-11 Robert Bosch Gmbh Schutzvorrichtung
DE102016203925A1 (de) 2016-03-10 2017-09-14 Robert Bosch Gmbh Schutzvorrichtung
DE102016210759A1 (de) 2016-06-16 2017-12-21 Robert Bosch Gmbh Handwerkzeugmaschine
EP3263288A2 (fr) 2016-06-16 2018-01-03 Robert Bosch GmbH Machine-outil portative
DE102017213424A1 (de) 2017-08-02 2019-02-07 Robert Bosch Gmbh Handwerkzeugmaschine

Also Published As

Publication number Publication date
DE3884522D1 (de) 1993-11-04
WO1988006508A3 (fr) 1988-09-22
EP0303651A1 (fr) 1989-02-22
WO1988006508A2 (fr) 1988-09-07
EP0303651B1 (fr) 1993-09-29

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