WO2022199931A1 - Machine-outil portative comprenant un dispositif de verrouillage - Google Patents

Machine-outil portative comprenant un dispositif de verrouillage Download PDF

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Publication number
WO2022199931A1
WO2022199931A1 PCT/EP2022/053247 EP2022053247W WO2022199931A1 WO 2022199931 A1 WO2022199931 A1 WO 2022199931A1 EP 2022053247 W EP2022053247 W EP 2022053247W WO 2022199931 A1 WO2022199931 A1 WO 2022199931A1
Authority
WO
WIPO (PCT)
Prior art keywords
locking
sleeve
spring
tool holder
locking device
Prior art date
Application number
PCT/EP2022/053247
Other languages
German (de)
English (en)
Inventor
Immanuel Werner
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 WO2022199931A1 publication Critical patent/WO2022199931A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D2217/003—Details relating to chucks with radially movable locking elements
    • B25D2217/0038—Locking members of special shape
    • B25D2217/0042—Ball-shaped locking members

Definitions

  • the present invention relates to a hand-held power tool with a tool holder that has a tubular tool holder in which a tool set can be locked by an associated locking device via at least one locking element, in particular a locking ball, with the locking device having a pressure sleeve that is spring-loaded via an associated spring element and a stop sleeve, the stop sleeve having a contact surface on its inner circumference, the spring-loaded pressure sleeve in a locking position pressing the at least one locking element against the contact surface, and a locking sleeve being provided which extends in the longitudinal direction of the tubular tool holder from one operating position to a Unlocking position is displaceable to move the spring-loaded pressure sleeve from the locked position to an unlocked position.
  • a hand-held power tool is known from EP 2 894009 A1, which has a locking device for locking an insert tool in a tubular tool holder.
  • the locking device has locking elements on which are acted upon by a spring-loaded pressure sleeve in an assigned locking position against a contact surface of a stop sleeve.
  • the locking elements are designed as pawls, for example.
  • the spring-loaded pressure sleeve has a gripping area and is displaceable in the longitudinal direction of the tubular tool holder from the locked position into an unlocked position.
  • the invention relates to a hand-held power tool with a tool holder which has a tubular tool holder in which an insert tool can be locked by an associated locking device via at least one locking element, in particular a locking ball, the locking device being a pressure sleeve spring-loaded via an associated spring element and has a stop sleeve.
  • the stop sleeve has a contact surface on its inner circumference. In a locking position, the spring-loaded pressure sleeve presses the at least one locking element against the contact surface.
  • a locking sleeve is provided which is slidable longitudinally of the tubular tool holder from an operative position to an unlocking position to move the spring-loaded compression sleeve from the locking position to an unlocking position.
  • the locking device is designed to compensate for wear produced by the at least one locking element on the spring-loaded pressure sleeve and/or the contact surface of the stop sleeve, at least within predetermined tolerances.
  • Wear tracking can thus be made possible in a simple manner, by means of which wear generated during operation by at least one locking element on the spring-loaded pressure sleeve and/or the contact surface of the stop sleeve can be efficiently compensated within the specified tolerances.
  • a corresponding service life of the stop sleeve and the spring-loaded pressure sleeve, and thus the tool holder as a whole can advantageously be extended.
  • the locking sleeve is displaceable from the operating position to a driving position in order to bring the locking sleeve into engagement with the spring-loaded pressure sleeve, the driving position being longitudinally arranged between the operating position and the unlocking position.
  • the locking sleeve and the spring-loaded pressure sleeve can thus be provided as separate components. This simplifies the manufacture of the tool holder and enables an advantageous separation of the functionalities of the locking sleeve and the spring-loaded pressure sleeve.
  • a distance is preferably formed in the longitudinal direction between the operating position and the entrainment position, which specifies the specified tolerances.
  • the specified tolerances can be specified for specific applications and machines.
  • the spring-loaded pressure sleeve has a loading collar against which the associated spring element bears in order to force the spring-loaded pressure sleeve into the locking position.
  • An additional spring element is preferably provided, which acts on the locking sleeve with a predetermined spring force in the operating position.
  • the locking sleeve can be moved into the operating position independently of the spring-loaded pressure sleeve, so that the locking sleeve and the spring-loaded pressure sleeve can be positioned independently of one another when the locking device is in the locked state, and suitable wear tracking can therefore be implemented easily and simply can.
  • the associated spring element and the additional spring element are preferably compression springs, which are arranged concentrically to one another in the locking sleeve.
  • a protective cap is provided, which is arranged on a free end of the tubular tool holder, the locking sleeve engaging at least partially in the protective cap in the operating position.
  • the protective cap provides efficient protection on a side of the hand-held power tool that faces a workpiece to be machined, with the protective cap being able to prevent damage to the tool holder if the hand-held power tool slips off the workpiece, for example.
  • the locking sleeve engaging in the protective cap can effectively protect the interior of the tool holder from dirt, e.g. from dust particles.
  • At least one further spring element is provided, which acts on the locking sleeve with a predetermined spring force in the direction of the unlocking position.
  • the at least one additional spring element has at least one spring tab that rests against the protective cap and spring-loads the locking sleeve in the direction of the unlocking position.
  • the hand-held power tool is designed in the manner of a rotary or chipping hammer, with the tubular tool holder having a hammer tube.
  • a suitable handheld power tool can thus be provided in a simple manner.
  • Fig. 1 is a side view of a hand tool with a tool holder according to the invention
  • FIG. 2 shows a longitudinal section through the tool holder of FIG. 1 with a locking device designed according to an embodiment in the locked state
  • FIG. 3 shows a longitudinal section of a section of the tool holder from FIG. 2 with the locking device designed according to an alternative embodiment
  • Fig. 4 is a perspective view of a locking sleeve of the Verriege treatment device of FIG. 3, and
  • FIG. 5 shows a longitudinal section of a detail of the tool holder from FIG. 2 with the locking device designed according to a further alternative embodiment.
  • Fig. 1 shows an exemplary hand tool 100 with a housing 110, in which a drive unit 120 is illustratively for driving a tool holder 140 measure is arranged.
  • the tool holder 140 is preferably designed to receive an insert tool 190 .
  • tool holder 140 is a 22mm HEX tool holder, but may also be an SDSmax or SDSplus tool holder, or any other suitable tool holder.
  • a transmission 130 is optionally assigned to the drive unit 120 .
  • the hand-held power tool 100 can also be configured without the gear 130 .
  • the hand-held power tool 100 preferably has an impact mechanism 150 for generating impact pulses when the hand-held power tool 100 is in impact mode.
  • the generation of percussion pulses by means of percussion mechanism 150 is well known to those skilled in the art.
  • a suitable percussion mechanism with which percussion mechanism 150 can be implemented is also sufficiently known to the person skilled in the art, so that a detailed description of percussion mechanism 150 and the functionality of percussion mechanism 150 is omitted here for the sake of simplicity and conciseness of the description.
  • the housing 110 has a handle 105 on its side 104 facing away from the tool holder 140 and an optional additional handle 115 on its side 102 facing the tool holder 140.
  • the housing 110 is preferably provided with a sealing flange 112 on its side 102.
  • the hand-held power tool 100 can be operated in a mains-connected manner, i.e. it can be connected to a mains power supply via a power cable 199 .
  • the hand-held power tool 100 can instead also be operated wirelessly, e.g. via a battery pack.
  • the hand-held power tool 100 is preferably designed in the manner of a drill or chisel hammer.
  • a handheld power tool 100 of this type is sufficiently known from the prior art, which is why a detailed description is dispensed with here in order to keep the description brief.
  • Fig. 2 shows the tool holder 140 from Fig. 1, as well as a section of the housing 110, which is provided with the sealing flange 112, of the handheld power tool 100 from Fig. 1.
  • the tool holder 140 preferably has a locking device 200, by means of which the example tool insert 190 from Fig. 1 is locked in the tool holder 140.
  • the locking device 200 is shown in a locked state.
  • the tool holder 140, and thus also the locking device 200 illustratively has a longitudinal extension 203, which defi ned an axial direction or longitudinal direction, and a transverse extension 206, which defines a radial direction.
  • the tool holder 140 preferably has a tubular tool holder 210 which has at least one recess 216 .
  • the tool holder 210 preferably has a hammer tube 211 and is preferably designed in one piece with it.
  • the tool holder 210 illustratively forms an interior receptacle 240 for receiving the insertion tool 190 .
  • the hammer tube 211 forms, for example, an inner receptacle 212 in which at least one hammer 214 associated with the percussion mechanism 150 of FIG. 1 is preferably arranged.
  • the tool holder 140 is shown in an upper half of the figure, viewed in the direction of arrows 201, by way of example before an impact pulse is transmitted from the hammer 214 to the insertion tool 190.
  • the tool holder 140 is shown as an example in percussion mode when an impact impulse is transmitted from the beater 214 to the insert tool 190.
  • the application tool 190 illustratively has a locking section 205 facing the beater 214, via which the application tool 190 is locked by the locking device 200 in the tool holder 210, and thus in the tool holder 140.
  • Locking device 200 is preferably assigned at least one locking element 250, which is arranged in the at least one recess 216 in tool holder 210 for locking insert tool 190.
  • Two or three locking elements 250 are preferably provided, with each locking element engaging in an associated recess of the tool holder 210 . However, more than three locking elements 250 may be present.
  • the locking element 250 is illustratively designed as a locking ball.
  • the locking member 250 may be of any other configuration such as a roller or a pawl, or any other shape including a spherical portion.
  • FIG. 2 is based on the use of three locking balls. goes. These are preferably each arranged at an angular distance of 120° relative to one another. Therefore, in Fig. 2 in the lower half of the image, seen in the direction of the arrows 202, there is no locking ball, since the lower half of the image is arranged at an offset of 180° to the upper half of the image, seen in the direction of the arrows 201, in which a Locking ball of the locking device 200 is shown.
  • the locking device 200 has a spring-loaded pressure sleeve 230 via an associated spring element 280 and a stop sleeve 242 .
  • the stop sleeve 242 preferably has a contact surface 244 on its inner circumference 249 .
  • the spring-loaded pressure sleeve 230 has before given to a loading collar 236 against which the associated spring derelement 280 bears to bias the spring-loaded pressure sleeve 230 as shown in a locking position.
  • the loading collar 236 has a standing edge 234 against which the associated spring element 280 rests.
  • the term “sleeve” should be understood to include any round, preferably elongated, hollow object into which something can be inserted. Accordingly, the term “sleeve” in the context of the present invention also includes a wide ring, or a plurality of interconnected webs, which extend, for example, on a cylinder jacket and whose envelope is ring-shaped, etc.
  • the spring-loaded pressure sleeve 230 preferably presses the at least one locking element 250 against the contact surface 244 of the stop sleeve 242 in the locking position izoflä surface 244 of the stop sleeve 242 to compensate for wear generated at least within before given tolerances.
  • the spring-loaded pressure sleeve 230 preferably has a pressure surface 232 for applying a force to the at least one locking element 250 in the locking position.
  • the pressure surface 232 is preferably the Locking element 250 arranged facing.
  • the spring-loaded pressure sleeve 230 can preferably be displaced against a spring force of the associated spring element 280 in the longitudinal direction 203 of the tool holder 210 from the locked position to an unlocked position in order to move the at least one locking element 250 from a locked position to an unlocked position.
  • the spring-loaded pressure sleeve 230 also has at least one receptacle 229, or preferably one receptacle per locking element.
  • the at least one receptacle 229 is formed, for example, in a sleeve-shaped body 231 of the spring-loaded pressure sleeve 230 .
  • the sleeve-shaped body 231 is preferably guided in an axially displaceable manner on an outer circumference 218 of the tool holder 210 .
  • the at least one locking element 250 is preferably accommodated with play in the at least one receptacle 229, i.e. in such a way that the at least one locking element 250 can move freely within specified tolerances in the receptacle 229.
  • the at least one locking element 250 preferably engages at least in some areas via the recess 216 in the tool holder 210 in the locking section 205 of the insertion tool 190 and thus locks it in the tool holder 210 or in the tool receptacle 140.
  • the locking device 200 preferably has a locking sleeve 220, which can be displaced in the longitudinal direction 203 of the tool holder 210 from an operating position shown in Fig. 2 to an unlocking position, in order to move the spring-loaded pressure sleeve 230 from its locking position shown in Fig. 2 to move their unlocked position.
  • the locking sleeve 220 is seen with a groove-shaped handle portion 224 ver.
  • This groove-shaped grip area 224 forms an annular grip trough 227 by way of illustration.
  • the ring-shaped recessed grip 227 preferably has a circular cross section when viewed in the longitudinal direction 203, but can alternatively also have any other cross section, for example a polygonal one.
  • the locking sleeve 220 may comprise a first material and the spring loaded compression sleeve 230 may comprise a second material.
  • the first material is preferably plastic, in particular a dimensionally stable plastic, eg hard plastic.
  • the plastic can be in the form of fiber-reinforced plastic, in particular fiber-reinforced and/or carbon-fiber-reinforced plastic, for example polyamide with glass fibers.
  • the second material is preferably a metallic material, preferably steel.
  • the second material is preferably a hardenable material, eg metal, sintered material.
  • the locking sleeve 220 has a first axial end 291 facing the closing flange 112 and an opposite, second axial end 292.
  • the locking sleeve 220 preferably has a guide section 222.
  • the locking sleeve 220 preferably has an engagement section 226.
  • the groove-shaped grip region 224 is preferably arranged between the engagement section 226 and the guide section 222 in the longitudinal direction 203 of the tool holder 210 .
  • the guide section 222 preferably forms an interior receptacle 221 in which the loading collar 236 of the spring-loaded pressure sleeve 230 and the spring element 280 are at least partially arranged.
  • the guide section 222 preferably has an end wall 223 facing the groove-shaped grip region 224, against which an additional spring element 285 rests illustratively.
  • the end wall 223 forms, for example, a loading section 293 for the spring-loaded pressure sleeve 230 and a preferably ring-shaped separating web 288 in order to allow a stable and robust arrangement of the spring element 285 in the locking sleeve 220 .
  • the guide section 222 is used to guide the locking sleeve 220 on a guide sleeve 281. This is preferably attached to the end flange 112 of the housing 110.
  • the spring element 285 acts on the locking sleeve 220, preferably with a predetermined spring force, into the operating position.
  • the spring element 285 is illustratively designed in the manner of a compression spring, which is connected between the end wall 223 and an associated standing edge 283 of the guide sleeve 281 is arranged.
  • the spring element 280 is preferably also designed in the manner of a compression spring, which is arranged between the contact edge 234 of the spring-loaded pressure sleeve 230 and the closing flange 112 .
  • the spring elements 280, 285 are preferably arranged concentrically to one another within the locking sleeve 220, preferably at least in sections in the interior receptacle 221 of the guide section 222.
  • the engagement section 226 preferably forms an interior receptacle 225 in which a damping element 260 is preferably arranged when the locking device 200 is in the locked state, as shown in FIG.
  • the damping element 260 is illustratively ring-shaped and arranged on the outer circumference 218 of the tool holder 210 .
  • the damping element 260 is preferably in the longitudinal direction 203 of the tool holder 210 against the stop sleeve 242 against which a first inner collar 228 of the locking sleeve 220 also rests.
  • a second inner collar 270 of the locking sleeve 220 which is formed, for example, by the loading section 293 of the locking sleeve 220, also rests against the stop sleeve 242.
  • an outer collar 275 is assigned to the engagement section 226, which is preferably designed in the shape of a ring.
  • the outer collar 275 preferably forms a transition from the engagement section 226 to the groove-shaped grip area 224.
  • the engagement section 226 preferably engages in a protective cap 245 when the locking device 200 is in the locked state.
  • the protective cap 245 is preferably arranged on a free end 209 of the tool holder 210 .
  • the protective cap 245 is illustratively provided with a receiving section 248 .
  • the damping element 260 is received, for example, as well as the stop sleeve 242 at least in sections.
  • the locking sleeve 220 preferably engages in the protective cap 245 at least in sections in the operating position.
  • the locking sleeve 220 is displaceable in the longitudinal direction 203 from its operating position shown in FIG. In the driving position, the loading section 293 of the locking sleeve 220 rests against a contact edge 235 of the loading collar 236 of the spring-loaded pressure sleeve 230 .
  • the driving position is arranged in the longitudinal direction 203 between the operating position and the unlocked position.
  • a distance 298 is formed in the longitudinal direction 203 between the operating position and the driving position, which is marked with a circle 299 for clarification and the specified tolerances for compensating for any wear that occurs on the contact surface 244 of the stop sleeve 242 and/or the pressure surface 232 of the spring-loaded Pressure sleeve 230 specifies.
  • locking sleeve 220 is in its driving position when, starting from its operating position shown in FIG. 2, it is displaced by the distance 298 towards the guide sleeve 281.
  • locking sleeve 220 is shown in FIG. 2 only in its operative position and not in its driving position for clarity of drawing.
  • the insertion tool 190 is pushed into the tool holder 210 in the direction of the hammer 214 .
  • the insert tool 190 presses against the at least one locking element 250 arranged in the recess 216 and displaces this against the spring-loaded pressure sleeve 230 and then with it in such a way that the at least one locking element 250 is pushed out of the recess 216 in the direction of the closing flange 112 until that an end of the insertion tool 190 facing the beater 214 is pushed past the at least one locking element 250.
  • the spring-loaded pressure sleeve 230 pushes the at least one locking element 250 back into the recess 216 by the spring force of the spring element 280, where the at least one locking element 250 at least partially engages in the locking section 205 of the tool insert 190 and thus locks the tool insert 190 in the tool holder 210 .
  • the spring-loaded pressure sleeve 230 uses the spring force of spring element 280 to press the at least one locking element 250 against the contact surface 244 of the stop sleeve 242 and into the recess 216 of the tool holder 210 to lock the insertion tool 190.
  • the locking sleeve 220 is preferably also applied against the stop sleeve 242, so that the outer collar 275 of the locking sleeve 220 is preferably flush against the receiving section 248 of the protective cap 245.
  • the distance 298 for tracking wear is preferably formed between the contact edge 235 of the loading collar 236 of the spring-loaded pressure sleeve 230 and the loading section 293 of the locking sleeve 220 .
  • This tracking of wear is advantageously possible until the distance 298 is reduced to zero, in particular due to wear on the contact surface 244 of the stop sleeve 242 and/or the pressure surface 232 of the spring-loaded pressure sleeve 230 .
  • locking sleeve 220 is first pushed, preferably in longitudinal direction 203 of tool holder 140, from the operating position to the driving position, in order to bring locking sleeve 220 into engagement with spring-loaded pressure sleeve 230.
  • locking sleeve 220 is against the spring-loaded pressure sleeve 230 and takes it with it when it is moved further, so that the locking sleeve 220 and the spring-loaded pressure sleeve 230 are pushed together against the spring force of the spring elements 285, 280 in the direction of the guide sleeve 281 until the locking sleeve 220 is in the Unlocking position is and the spring-loaded pressure sleeve 230 in the unlocked position.
  • the spring-loaded pressure sleeve 230 entrains the at least one locking element 250 so that it is pushed out of the recess 216 of the tool holder 210 at least far enough for it to release the locking section 205 of the application tool 190 and thus the application tool 190.
  • the axial end 291 of the locking sleeve 220 comes to rest against an annular shoulder 282 of the guide sleeve 281, so that the annular shoulder 282 forms an end stop for the locking sleeve 220.
  • Fig. 3 shows an enlarged section of tool holder 140 from Fig.
  • the locking device 200 is shown here according to a first alternative embodiment, as described below.
  • the locking device 200, the Verriege treatment sleeve 220, the guide portion 222 on the guide sleeve 281 leads GE is.
  • the guide sleeve 281 is arranged on the end flange 112 .
  • the guide section 222 merges into the groove-shaped grip area 224 of the locking sleeve 220, which terminates at the outer collar 275 of the locking sleeve 220.
  • the outer collar 275 is assigned to an engagement portion 310 of the locking sleeve 220, which has a reduced wall thickness compared to the engagement portion 226 of FIG.
  • the outer collar 275 has a substantially disk-like shape.
  • At least one further spring element 320 is now provided, which acts on the locking sleeve 220 with a predetermined spring force in the direction of the unlocking position, i.e. in the direction of the guide sleeve 281.
  • the at least one further spring element 320 has at least one spring clip which rests against the protective cap 245 and spring-loads the locking sleeve 220 in the direction of the unlocked position.
  • the at least one additional spring element 320 spaces the outer collar 275 in the operating position of the locking sleeve 220 by a predetermined distance 330 from the protective cap 245 or from its receiving section 248.
  • the predetermined distance 330 can be used instead of the distance 298 of FIG. 2 for wear tracking.
  • the formation of the distance 298 from Fig. 2 can be omitted, so that in the first alternative embodiment the loading collar 236 of the spring-loaded pressure sleeve 230 in the position shown in Fig.
  • Fig. 4 shows the locking sleeve 220 of FIG. 3 with the engagement portion 310, which has a reduced wall thickness compared to the engagement portion 226 of FIG a further spring element 320 preferably has at least two and illustratively a plurality of spring shackles, of which three spring shackles can be seen in FIG.
  • FIG. 5 shows the tool holder 140 from FIG. 2 with the protective cap 245, as well as the locking device 200 from FIG. 2.
  • the locking device 200 is shown here according to a second alternative embodiment, as described below.
  • the locking device 200, the Verriege treatment sleeve 220, the guide portion 222 on the guide sleeve 281 leads GE is.
  • the guide sleeve 281 is arranged on the end flange 112 .
  • the guide section 222 merges into the groove-shaped grip area 224 of the locking sleeve 220, which terminates at the outer collar 275 of the locking sleeve 220.
  • At least one additional spring element 287 is now provided, which in Direction of the unlocking position, ie in the direction of the guide sleeve 281, be aufschlagt.
  • the at least one further spring element 287 is preferably a compression spring, which is arranged, for example, between a standing collar 241 of the stop sleeve 242 from FIG. 2 and the second inner collar 270 from FIG. 2 of the locking sleeve 220 .
  • the at least one additional spring element 287 spaces outer collar 275 by the specified distance 330 from FIG. 3 from protective cap 245 or from its receiving section 248, analogously to FIG in Ge contrast to Fig. 2 in the operating position of the locking sleeve 220 is not flush against the receiving portion 248 of the protective cap 245.
  • the specified distance 330 can thus also be used instead of the distance 298 from FIG. 2 for tracking wear.
  • the formation of the distance 298 of Fig. 2 can be omitted, so that in the second alternative embodiment the pressure collar 236 of the spring-loaded pressure sleeve 230 in the operating position of the locking sleeve 220 shown in Fig. 5 is already counteracted by the spring force of the spring element 280 Be aufschlagungsabêt 293 is subjected to a force, even if no Ver wear on the contact surface 244 of the stop sleeve 242 and / or the Druckflä surface 232 of the spring-loaded pressure sleeve 230 has occurred.
  • the use of the spring element 285 from FIG. 2 can again be dispensed with.

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

Abstract

L'invention concerne une machine-outil portative comprenant un logement d'outil (140) qui comporte un porte-outil tubulaire (210) dans lequel un outil d'insertion (190) peut être verrouillé par un dispositif de verrouillage associé (200) par le biais d'au moins un élément de verrouillage (250), en particulier une bille de verrouillage : le dispositif de verrouillage (200) comprenant un manchon de pression (230), qui est sollicité par ressort au moyen d'un élément à ressort associé (280), et un manchon d'arrêt (242) ; le manchon d'arrêt (242) présentant une surface de contact (244) sur sa périphérie interne (249) ; dans une position de verrouillage, le manchon de pression à ressort (230) pressant ledit élément de verrouillage (250) contre la surface de contact (244) ; et un manchon de verrouillage (220) étant prévu, qui peut être déplacé dans la direction longitudinale (203) du porte-outil tubulaire (210) hors d'une position de fonctionnement dans une position de déverrouillage pour déplacer le manchon de pression à ressort (230) hors de la position de verrouillage dans une position de déverrouillage. Selon l'invention, le dispositif de verrouillage (200) est conçu pour compenser l'usure générée par ledit élément de verrouillage (250) sur le manchon de pression à ressort (230) et/ou sur la surface de contact (244) du manchon d'arrêt (242) au moins dans des tolérances prédéfinies.
PCT/EP2022/053247 2021-03-26 2022-02-10 Machine-outil portative comprenant un dispositif de verrouillage WO2022199931A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021203065.3A DE102021203065A1 (de) 2021-03-26 2021-03-26 Handwerkzeugmaschine mit einer Verriegelungseinrichtung
DE102021203065.3 2021-03-26

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Publication Number Publication Date
WO2022199931A1 true WO2022199931A1 (fr) 2022-09-29

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PCT/EP2022/053247 WO2022199931A1 (fr) 2021-03-26 2022-02-10 Machine-outil portative comprenant un dispositif de verrouillage

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WO (1) WO2022199931A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69503272T2 (de) * 1994-02-18 1998-11-19 Black & Decker Inc Werkzeughalter für einen Bohrhammer und/oder Meisselhammer
EP1747853A2 (fr) * 2005-07-28 2007-01-31 HILTI Aktiengesellschaft Porte-outil pour outil à percussion
US20130206436A1 (en) * 2012-02-10 2013-08-15 Milwaukee Electric Tool Corporation Bit retention assembly for rotary hammer
EP2894009A1 (fr) 2014-01-09 2015-07-15 HILTI Aktiengesellschaft Machine-outil portative
EP2910338A1 (fr) * 2014-02-20 2015-08-26 HILTI Aktiengesellschaft Porte-outil

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19708176A1 (de) 1997-02-28 1998-09-03 Bosch Gmbh Robert Werkzeughalter für eine Bohr- und/oder Schlagwerkzeugmaschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69503272T2 (de) * 1994-02-18 1998-11-19 Black & Decker Inc Werkzeughalter für einen Bohrhammer und/oder Meisselhammer
EP1747853A2 (fr) * 2005-07-28 2007-01-31 HILTI Aktiengesellschaft Porte-outil pour outil à percussion
US20130206436A1 (en) * 2012-02-10 2013-08-15 Milwaukee Electric Tool Corporation Bit retention assembly for rotary hammer
EP2894009A1 (fr) 2014-01-09 2015-07-15 HILTI Aktiengesellschaft Machine-outil portative
EP2910338A1 (fr) * 2014-02-20 2015-08-26 HILTI Aktiengesellschaft Porte-outil

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