EP0742082B1 - Dispositif de transmission de couple pour des outils à main - Google Patents

Dispositif de transmission de couple pour des outils à main Download PDF

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Publication number
EP0742082B1
EP0742082B1 EP96810136A EP96810136A EP0742082B1 EP 0742082 B1 EP0742082 B1 EP 0742082B1 EP 96810136 A EP96810136 A EP 96810136A EP 96810136 A EP96810136 A EP 96810136A EP 0742082 B1 EP0742082 B1 EP 0742082B1
Authority
EP
European Patent Office
Prior art keywords
tool
clamping shaft
axial
grooves
strips
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
EP96810136A
Other languages
German (de)
English (en)
Other versions
EP0742082A1 (fr
Inventor
Werner Kleine
Josef Obermeier
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Publication of EP0742082A1 publication Critical patent/EP0742082A1/fr
Application granted granted Critical
Publication of EP0742082B1 publication Critical patent/EP0742082B1/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
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/0007—Connections or joints between tool parts
    • B25B23/0042—Connection means between screwdriver handle and screwdriver shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/0007—Connections or joints between tool parts
    • B25B23/0035—Connection means between socket or screwdriver bit and tool
    • 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
    • B25D17/084—Rotating chucks or sockets
    • B25D17/088—Rotating chucks or sockets with radial movable locking elements co-operating with bit shafts specially adapted therefor
    • 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
    • B25D2217/0034—Details of shank profiles
    • 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
    • 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
    • B25D2250/301—Torque transmission means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17042—Lost motion
    • Y10T279/17094—Sleeve type retainer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/89—Tool or Tool with support
    • Y10T408/907—Tool or Tool with support including detailed shank
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/94—Tool-support
    • Y10T408/95—Tool-support with tool-retaining means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/94—Tool-support
    • Y10T408/95—Tool-support with tool-retaining means
    • Y10T408/953—Clamping jaws

Definitions

  • the invention relates to a device for torque transmission beating hand tools according to the generic term of the Claim 1.
  • Tools and tool holders of hand tools, in particular for striking or drilling tools are coordinated.
  • the tool and the tool holder of the hand tool device form a device for Transmission of the torque generated by the drive of the device.
  • For the Torque transmission are in the known devices on the clamping shaft of the Tool driving surfaces provided.
  • the rotary driving surfaces act with appropriately trained Mating surfaces in the tool holder together to create the one generated by the drive To transfer torque to the tool.
  • Locking bodies engage in the axially running closed recesses on Clamping shank and secure the tool against falling out of the Tool holder.
  • the locking bodies are axial in the tool holder Direction set.
  • the limited axial mobility of the Tool is due to the axial extension of the closed recesses in the Clamping of the tool enables.
  • US5013194 discloses a device for torque transmission in hand tool devices with an insertable tool, which driving surfaces and radially displaceable Has arrangements for axially holding the tool, the axially extending Engage recesses in the tool shank.
  • the recesses are also rotationally symmetrical.
  • DE2653082A1 as well as DE3843465A1 or FR2248914 discloses one appropriate device for torque transmission in striking hand tools, by the elongated depressions over the corresponding engaging axial extension and thus limited axial mobility of the tool.
  • a disadvantage of such solutions is the weakening of the Tool shaft through the large recesses in the recesses.
  • the object of the present invention is therefore a tool and a corresponding tool holder of a striking hand tool device modify that as much as possible of what is generated by the drive of the hand tool Torque can be transferred to the tool. It is said to be excessive Weakening of the tool, especially its clamping shank, avoided and a resulting failure of the tool can be prevented.
  • the limited axial mobility of the tool used in the tool holder should be preserved. It is said to be a device for torque transmission from tool and tool holder, are created in which the tool is easy to insert into the tool holder and incorrect insertion due to Confusion of the rotary drivers and the axial locks is avoided.
  • the Tools should be simple and cheap to manufacture; complex manufacturing processes should be avoided.
  • the solution to these tasks is a device for torque transmission for striking hand tools, which the in the characterizing section of Features claim 1 listed features.
  • the inventive Torque transmission device comprises a tool which on its Clamping shank is equipped with axially extending driving surfaces that with correspondingly designed counter surfaces in the tool holder cooperate, and has a facility in cooperation with corresponding precautions in the tool holder an axial bracket for the Tool forms and a limited axial displacement of the tool used allowed.
  • the device on the clamping shank of the tool comprises at least one Well, with at least one correspondingly trained Interlocking element of the tool holder cooperates, which limits radially and is limited axially displaceable, the axial displaceability of the tool at least in part due to the limited axial displaceability of the Locking element is made possible.
  • the deepening on For this purpose the clamping shank has an axial extension which is essentially equal to the axial one Extension of the locking element is. In this way, the through Indentation as a torque transmission area, possibly lost area be kept as small as possible.
  • the limited axial displaceability of the Tool holder inserted tool remains due to the limited axial Slidability of the locking element guaranteed.
  • the axial displacement of the locking element is larger than that axial extension of the recess in the clamping shaft.
  • the inventive design of the tool and the tool holder of the hand tool is the one available on the clamping shaft Torque transmission area enlarged.
  • the axial securing of the tool includes only a small depression on the clamping shaft, which is only a very small one Area of the clamping shaft.
  • the rest of the area Clamping shaft is available for the transmission of the torque, and it much more torque can be transferred to the tool than with the known devices for torque transmission.
  • An excessive weakening the tool in the area of its clamping shank is avoided because the recess is relatively small. Even if this is in the bottom of a rotary driving groove in the clamping shaft arranged, the cross section of the clamping shaft is only insignificant decreased.
  • the depression in a front area of the Clamping shaft is arranged, the insertion end of the clamping shaft is turned away and in the inserted state of the tool in one Mouth area of the tool holder is located.
  • The is preferably located Basically, in relation to the working area of the tool, front half of the clamping shaft.
  • the Driving surfaces as far as possible in the direction of the working area of the tool shifted. This way the torsion length, that is the distance between the Driving surfaces and the cutting edge of the tool, if possible kept small and it can better introduce shock energy into that Inserting end of the clamping shaft of the tool can be effected.
  • there are at least two Provided depressions that are approximately dome-shaped and in the same Distances from each other along a circumference of the clamping shaft of the Tool are arranged.
  • the tool depending on the number of in diametrically opposite recesses in the clamping shaft in different angular positions are inserted into the tool holder, wherein at least one of the recesses with a locking element Tool holder cooperates.
  • each driving surface Deepening is assigned.
  • the number of attached to the tool shank Wells correspond to the number of driving surfaces, and the tool can in this way with only a single locking element in the tool holder be used in a corresponding number of angular positions. This has the Advantage that each of the wells is exposed to less stress and that the likelihood of a depression being deformed is reduced.
  • the recesses are so along a circumference of the clamping shaft arranged so that they form a circumferential ring groove, the permissible hang Insertion orientations of the tool only from the arrangement of the Driving surfaces on the clamping shaft and from their counter surfaces in the Tool holder.
  • the driving surfaces arranged on the clamping shaft are advantageous Embodiment variant of the invention arranged on strips or grooves.
  • Your Longitudinal extension over the clamping shaft runs essentially perpendicular to the Scope of the clamping shaft on which the recess (s) or the annular groove are arranged are.
  • the strips or grooves formed in this way on the clamping shank of the tool are easy to manufacture.
  • Their counter surfaces are on grooves or strips in the Tool holder provided and are also easy to manufacture.
  • the torque is transmitted essentially along the entire length Longitudinal extension of the interacting driving surfaces and counter surfaces.
  • the locking element in the area of its with the Ring groove interacting locking surface the cross section of the ring groove is aligned and with its locking surface on at least two strips or Grooves comes to the plant.
  • a locking element has in the Usually an asymmetrical shape that prevents it from falling out of its holder reliably prevented.
  • the locking surface of the locking element and the Correspondingly designed recess can be kept very small.
  • the Locking element is preferably made of hard metal.
  • each bar or groove has a second flank, which in the case of a strip in the direction of rotation leading and in the case of a groove in the direction of rotation and arranged in each case with the radial plane of the strip or groove encloses a larger angle than that Take-away area.
  • the strips and grooves formed in this way have an asymmetrical, sawtooth-like shape.
  • the Driving surfaces on the clamping shaft are designed such that the outer contour of a Cross section of the clamping shaft has a sinusoidal course.
  • the Cross section of the correspondingly formed counter surfaces in the Tool holder also has a sinusoidal cross section.
  • the on this Wearing surfaces and their counter surfaces in the tool holder largely run against each other without shear forces. This can cause friction losses can be avoided and wear of the driving surfaces on the clamping shaft can be avoided and the counter surfaces in the tool holder are kept very small.
  • the sinusoidal curve avoids notch stresses.
  • the sine-like The cross sections of the clamping shank and the tool holder can be in Their shape can be varied such that, for example, by flattening the Sinus curve in the area of the largest diameter of the rotary driver on the Clamping shank when the tool is inserted creates dead spaces. This Dead spaces perform the function of dirt bags and can contaminate take up.
  • the guiding surface can also be between the clamping shank and the tool holder.
  • an odd number of Driving surfaces on the clamping shaft and of appropriately trained Counter surfaces are provided in the tool holder.
  • clamping shank diameters up to about 10 mm are preferably up to five driving surfaces and corresponding ones Counter surfaces provided.
  • clamping shank diameters from approx. 10mm to approx 15 mm turn out to be up to seven driving surfaces and corresponding ones Counter surfaces as advantageous.
  • clamping shank diameters that are larger than about 15 mm are preferably up to eleven driving surfaces and corresponding ones Counter surfaces arranged.
  • the odd number of Driving surfaces and counter surfaces is also for vibration reasons Advantage. The slight asymmetry results in a changed application of force the tool tip provided with cutting edges, which has an advantageous mining behavior causes.
  • Fig. 1 is a first embodiment of the inventive device for Torque transmission shown schematically.
  • the facility includes a Tool 1 and one belonging to a hand tool device, not shown Tool holder 5.
  • the schematic representation shows tool 1 with its Clamping shaft 2 inserted into the tool holder 5.
  • driving surfaces 31 are arranged, which for the transmission of generated a preferably electric drive of the hand tool Torque on the tool 1 with correspondingly designed counter surfaces 6 cooperate in the tool holder 5.
  • the driving surfaces on the clamping shaft 2 are formed on rotary driving grooves 3 in which correspondingly shaped driver strips of the tool holder 5 intervention.
  • the tool 1 is on its clamping shaft 2 with a device equipped in cooperation with appropriate arrangements 7 in the Tool holder 5 a limited axially displaceable holder for the tool 1st forms.
  • the device is on the clamping shaft 2 formed as a small, preferably dome-shaped depression 4.
  • Precautions 7 in the tool holder 5 comprise a preferably spherical locking element 8, which is held in a block-like receptacle 9.
  • the recording is 9 together with the locking element 8 held by it in an axial extending groove 13 limited axially displaceable.
  • the axial length of the groove 13 is greater than the axial extent of the recess 4 in the clamping shaft 2.
  • the corresponding axial displacement of the locking element 8 is greater than the axial extent the recess 4 in the clamping shaft 2. To the displaceability of the receptacle 9 enable, this has on its area facing away from the clamping shaft 2 Axial strips 10, which in a slot-shaped recess 12 in the outer wall 11 the tool holder 5 can slide axially.
  • a locking sleeve 14 In the area of the recess 12 in the Outside wall 11 of the tool holder 5, a locking sleeve 14 is arranged has a cam surface 15. In the locked state, the cam surface 15 presses on the axial strips 10 of the receptacle 9 and ensures the axial securing of the Tool holder 5 inserted tool 1 by the locking element 8 is pressed into the recess 4 in the clamping shaft 2. By twisting the Locking sleeve 14, the cam surface 15 is moved away from the axial strips 10. Thereby have the axial strips 10 radial play and can dodge the radial Release clamping shaft 2 again.
  • dome-shaped Indication 4 indicated.
  • two or more depressions 4 can be arranged on the clamping shaft 2. With two or more recesses 4 these are preferably arranged in pairs diametrically opposite one another.
  • the tool holder can also have several, for example two or four, locking elements 8, which are diametrically opposed to each other in pairs opposite and are held and locked in the same way as described above and are axially displaceable together to a limited extent.
  • FIG. 2 shows a second exemplary embodiment of the clamping shaft 2 Tool 1 of the inventive device for torque transmission shown.
  • the driving surfaces 31 are on axially extending strips 3 intended.
  • the correspondingly trained counter surfaces in the not Tool holder shown are in this case on axial grooves with trapezoidal Cross section arranged.
  • the depressions 4 are such along a circumference of the Clamping shaft 2 arranged that they form a circumferential annular groove.
  • the strips 3 of the illustrated equipped with the driving surfaces 31 Embodiment do not extend to the insertion end 16 of the Clamping shank 2.
  • the insertion end 16 has a circular cross section.
  • an annular seal can be provided in the tool holder surrounds the clamping shaft 2 in the region of the insertion end 16. This additional Seal prevents that dirt brought along with the strips 3 into the area of the Percussion of the hand tool can get.
  • too in a tool with groove-shaped rotary drivers, such as for example, are indicated in Fig. 1, the grooves before the insertion end of the Can end. In this case too, the insertion end has one circular cross section that can be used for additional sealing can.
  • the depressions for example like this are arranged tightly that a circumferential annular groove is formed in relation to the Working direction of the tool front area 17 of the clamping shank 2, in particular approximately in the front half of the clamping shaft.
  • the driving areas can also continue into the front area of the clamping shaft. This will make the arrangement of the circular trained insertion end 16 facilitates the additional dirt seal can concern.
  • the initiation of the impact energy can be optimized without affecting the Arrangement of the take-along areas.
  • the torsion length defined as the distance between the driving surfaces and the cutting load-bearing Tool tip is reduced.
  • Fig. 3 is another embodiment of the clamping shaft 2 one Tool 1 of an inventive device shown in cross section.
  • the The cut is made through the circumferential ring groove.
  • the driving surfaces 31 are provided on strips 3.
  • the driving surfaces 31 are relative to the radial plane R of the strips 3 inclined at an angle ⁇ .
  • the angle ⁇ is advantageously approximately 15 ° to 60 °. This will make the Torque transmission from the correspondingly formed counter surfaces in the Tool holder introduced force component in a right angle to Power transmission surface extending and in a parallel to it Force component divided, which leads to an advantageous centering effect.
  • each bar 3 one in the direction of rotation has leading second flank 32 which with the radial plane R of the bar 3 Includes larger angle ⁇ than the driving surface 31.
  • the strips 3 In the projection of the Cross section of the clamping shaft, the strips 3 have an asymmetrical, sawtooth-like shape. While in the embodiment shown in FIG. 3 axial strips 3 are shown, asymmetrically designed grooves in the clamping shank be provided with the correspondingly shaped driver strips in the Interact tool holder. In this case the second edges run in Direction of rotation according to the driving surfaces.
  • FIG. 4 shows a further embodiment variant of the tool 1 Cross-sectional torque transmission device according to the invention.
  • the Section runs as in Fig. 3 through to a circumferential annular groove along a The circumference of the clamping shaft 2 arranged depressions.
  • the driving areas 31 are provided on rotary driving grooves 3, the outer contour of which is sinusoidal Has history.
  • the cross section of the correspondingly formed counter surfaces in the tool holder also has a sinusoidal cross section.
  • Form the counter surfaces in the tool holder and the grooves on the clamping shaft of the Tools can also be designed such that only the assembly of the Clamping shaft and the engaging counterparts in the projection gives a sinusoidal profile.
  • the driving surfaces formed in this way and their Mating surfaces in the tool holder run largely without shear forces to each other.
  • the sine-like curves can be varied, for example flattened, that dead spaces are formed when the tool is inserted into the tool holder become. These dead spaces fulfill the function of dirt bags and can Pick up impurities.
  • the sine-like gradients can also be used for one Guide of the tool in the tool holder can be modified.
  • the 4 has rotary driving grooves with sine-like Outer contour on. It goes without saying that the sinusoidal outer contour also at Rotary driving bars can be provided.
  • the exemplary embodiments of tools shown in FIGS. 3 and 4 have an odd number of driving areas on the clamping shaft and of corresponding counter surfaces in the tool holder.
  • At Clamping shaft diameters up to approximately 10 mm are preferably up to five Driving surfaces 31 (FIG. 3) or corresponding counter surfaces are provided.
  • At Clamp shank diameters from about 10 mm to about 15 mm are preferably up to seven driving surfaces or counter surfaces arranged.
  • the number of Rotary driving surfaces 31 or the counter surfaces in the tool holder preferably up to eleven (Fig. 4). With this number of takeaways or Corresponding counter surfaces can with the given tool diameters the areas of the tool equipped with the driving surfaces are still sufficiently stable.
  • the for Torque transmission available transmission area as large as possible being held.
  • the odd number of driving areas has an advantageous one Effect on tool degradation behavior during operation. It goes without saying that the geometries of the driving surfaces and the axial brackets and the number of driving surfaces and counter surfaces can be combined as required.
  • the inventive design of the tool and the tool holder of the hand tool is the one available on the clamping shaft Torque transmission area enlarged.
  • the axial securing of the tool includes only a small depression on the clamping shaft, which is only a very small one Area of the clamping shaft.
  • the rest of the area Clamping shaft is available for the transmission of the torque, and it much more torque can be transferred to the tool than with the known devices for torque transmission.
  • An excessive weakening of the tool in the area of its clamping shank is avoided since the Depressions are relatively small.
  • the limited axial mobility of the in Tool holder used tool is retained.
  • the tool holder of the hand tool device can no longer do the tool incorrectly inserted into the tool holder.
  • the areas of the tool that have the driving surfaces and the Areas for the axial mounting are no longer similar.
  • the insertion of the Tool in the tool holder is easy to do and can vary depending on the number of depressions on the clamping shaft in different angular positions of the tool. Creating the recesses on the clamping of the Tool can be very simple, for example by cutting or through Cold forming, especially rolling, take place. These procedures are simple and inexpensive to carry out what is produced in large quantities Tools is of great importance.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Manipulator (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Claims (12)

  1. Dispositif de transmission du couple de rotation dans des outillages à main à percussion comportant un outil (1) à enficher dans un logement d'outil (5), l'outil (1) comportant, sur sa tige de serrage (2), des surfaces d'entraínement (31) s'étendant axialement, qui coopèrent avec des contre-surfaces (6) conformées en correspondance dans le logement d'outil (5), et comportant au moins un renfoncement (4) qui, en coopération avec au moins un moyen (7) correspondant dans le logement d'outil (5), forme une fixation axiale pour l'outil (1) déplaçable axialement de manière limitée, avec un élément de verrouillage (8) conformé en correspondance, déplaçable radialement de manière limitée, caractérisé en ce que le renfoncement (4) présente une étendue axiale qui est sensiblement égale à l'étendue axiale de l'élément de verrouillage (8), et en ce que la course de déplacement axial de l'élément de verrouillage (8) est supérieure à l'étendue axiale du renfoncement (4) dans la tige de serrage (2), la possibilité de déplacement axial limité de l'outil (1), enfiché dans le logement d'outil (5), restant garantie par la possibilité de déplacement axial limité de l'élément de verrouillage (8).
  2. Dispositif selon la revendication 1, caractérisé en ce que le moyen (7) maintient l'élément de verrouillage (8) dans un logement (9) qui présente, dans sa zone tournée à l'opposé de la tige de serrage (2), une baguette axiale (10) qui peut glisser axialement dans un évidement (12) en forme de fente pratiqué dans la paroi extérieure (11) du logement d'outil (5).
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que le renfoncement (4) est disposé dans une zone avant (17) de la tige de serrage (2), qui est tournée à l'opposé de l'extrémité d'enfichage (16) de la tige de serrage, et qui se trouve, à l'état enfiché de l'outil (1), dans une zone d'embouchure du logement d'outil (5).
  4. Dispositif selon l'une des revendications précédentes, caractérisé en ce que sont prévus au moins deux renfoncements (4) qui sont approximativement en forme de calotte et qui sont disposés à même distance les uns des autres, le long d'un pourtour de la tige de serrage (2) de l'outil (1).
  5. Dispositif selon l'une des revendications précédentes, caractérisé en ce qu'un renfoncement (4) est affecté à chaque surface d'entraínement (31).
  6. Dispositif selon l'une des revendications précédentes, caractérisé en ce que les renfoncements (4) sont disposés le long d'un pourtour de la tige de serrage (2) de manière à former une rainure annulaire périphérique.
  7. Dispositif selon l'une des revendications précédentes, caractérisé en ce que les surfaces d'entraínement (31) axiales, prévues sur la tige de serrage (2), sont disposées sur des baguettes ou rainures (3) et s'étendent sensiblement perpendiculairement au pourtour de la tige de serrage (2) sur lequel sont disposés le(s) renfoncement(s) (4) ou la rainure annulaire.
  8. Dispositif selon les revendications 6 et 7, caractérisé en ce que l'élément de verrouillage (8) est adapté, dans la zone de sa surface de verrouillage qui coopère avec la rainure annulaire, à la section transversale de la rainure annulaire et vient s'appliquer sur au moins deux baguettes ou rainures (3), par sa surface de verrouillage.
  9. Dispositif selon la revendication 7 ou 8, caractérisé en ce que les surfaces d'entraínement (31) des baguettes ou rainures (3) sont inclinées par rapport à un plan radial (R) des baguettes ou rainures (3), selon un angle (a) qui est d'environ 15° à environ 60°.
  10. Dispositif selon la revendication 9, caractérisé en ce que les baguettes ou rainures (3) présentent chacune un deuxième flanc (32) qui forme, avec le plan radial (R) des baguettes ou rainures (3), un angle (β) plus grand que celui des surfaces d'entraínement (31).
  11. Dispositif selon la revendication 7, caractérisé en ce que les baguettes ou rainures (3) sont formées sur la tige de serrage (2) de manière que le contour extérieur d'une section transversale de la tige de serrage (2) présente un parcours sinusoïdal.
  12. Dispositif selon l'une des revendications précédentes, caractérisé en ce qu'il est prévu un nombre impair de surfaces d'entraínement (31) sur la tige de serrage (2) et de contre-surfaces (6) conformées en correspondance dans le logement d'outil (5), le nombre pouvant aller jusqu'à cinq surfaces d'entraínement (31) ou contre-surfaces (6) dans le cas de diamètres de la tige de serrage allant jusqu'à environ 10 millimètres, jusqu'à sept surfaces d'entraínement (31) ou contre-surfaces (6) dans le cas de diamètres de la tige de serrage d'environ 10 millimètres à environ 15 millimètres, et pouvant aller jusqu'à onze surfaces d'entraínement (31) ou contre-surfaces (6) dans le cas de diamètres de la tige de serrage supérieurs à environ 10 millimètres.
EP96810136A 1995-05-04 1996-03-06 Dispositif de transmission de couple pour des outils à main Expired - Lifetime EP0742082B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19516034A DE19516034A1 (de) 1995-05-04 1995-05-04 Einrichtung zur Drehmomentübertragung bei Handwerkzeuggeräten
DE19516034 1995-05-04

Publications (2)

Publication Number Publication Date
EP0742082A1 EP0742082A1 (fr) 1996-11-13
EP0742082B1 true EP0742082B1 (fr) 2001-05-30

Family

ID=7760845

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96810136A Expired - Lifetime EP0742082B1 (fr) 1995-05-04 1996-03-06 Dispositif de transmission de couple pour des outils à main

Country Status (6)

Country Link
US (1) US5704744A (fr)
EP (1) EP0742082B1 (fr)
JP (1) JP3557039B2 (fr)
AT (1) ATE201625T1 (fr)
DE (2) DE19516034A1 (fr)
DK (1) DK0742082T3 (fr)

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ATE460255T1 (de) * 2003-11-26 2010-03-15 Hilti Ag Werkzeugaufnahme für ein drehendes und schlagendes werkzeug
DE102004054685A1 (de) * 2004-11-12 2006-05-18 Hilti Ag Werkzeugaufnahme
DE102006016805A1 (de) * 2006-04-10 2007-10-11 Robert Bosch Gmbh Auswechselbares Rotationswerkzeug für eine Handwerkzeugmaschine
US20120253323A1 (en) * 2011-03-29 2012-10-04 Warsaw Orthopedic, Inc. Rotationally driven surgical tool assembly and method
EP2612981B1 (fr) * 2012-01-09 2014-07-16 Sandvik Intellectual Property AB Trépan pour un marteau à percussion, manche et patte de rétention correspondante
US9108255B2 (en) * 2013-01-28 2015-08-18 Gison Machinery Co., Ltd. Fast knockdown cutting tool assembly
US20170136611A1 (en) * 2015-11-17 2017-05-18 Caterpillar Inc. System Configured to Couple a Hydraulic Hammer and Tool
EP3323376B1 (fr) * 2016-11-21 2019-07-17 Hager & Meisinger GmbH Instrument dentaire et adaptateur associé
IT201700035863A1 (it) * 2017-03-31 2018-10-01 Marzocchi Snc Di Marzocchi Gilberto & C Dispositivo di lavorazione con sistema di anti-slittamento fra pinza del mandrino e utensile

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Also Published As

Publication number Publication date
DE19516034A1 (de) 1996-11-07
EP0742082A1 (fr) 1996-11-13
ATE201625T1 (de) 2001-06-15
DK0742082T3 (da) 2001-07-30
US5704744A (en) 1998-01-06
JPH08300269A (ja) 1996-11-19
JP3557039B2 (ja) 2004-08-25
DE59606978D1 (de) 2001-07-05

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