EP3670097A1 - Machine-outil portative - Google Patents

Machine-outil portative Download PDF

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Publication number
EP3670097A1
EP3670097A1 EP18215552.3A EP18215552A EP3670097A1 EP 3670097 A1 EP3670097 A1 EP 3670097A1 EP 18215552 A EP18215552 A EP 18215552A EP 3670097 A1 EP3670097 A1 EP 3670097A1
Authority
EP
European Patent Office
Prior art keywords
striker
striking
interior
tool
impact
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP18215552.3A
Other languages
German (de)
English (en)
Inventor
Klaus-Peter Bohn
Markus Hartmann
Carsten Peters
Maria Zivcec
Donato Clausi
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
Priority to EP18215552.3A priority Critical patent/EP3670097A1/fr
Priority to CN201980074525.0A priority patent/CN113015600A/zh
Priority to EP19817337.9A priority patent/EP3898118B1/fr
Priority to PCT/EP2019/085123 priority patent/WO2020126924A1/fr
Priority to US17/312,093 priority patent/US12479077B2/en
Publication of EP3670097A1 publication Critical patent/EP3670097A1/fr
Withdrawn legal-status Critical Current

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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
    • B25D17/06—Hammer pistons; Anvils ; Guide-sleeves for pistons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D11/00—Portable percussive tools with electromotor or other motor drive
    • B25D11/06—Means for driving the impulse member
    • B25D11/12—Means for driving the impulse member comprising a crank mechanism
    • B25D11/125—Means for driving the impulse member comprising a crank mechanism with a fluid cushion between the crank drive and the striking body
    • 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
    • B25D17/04—Handles; Handle mountings
    • B25D17/043—Handles resiliently mounted relative to the hammer housing
    • 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
    • B25D2211/003—Crossed drill and motor spindles
    • 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
    • B25D2211/068—Crank-actuated impulse-driving mechanisms
    • 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
    • B25D2217/0011—Details of anvils, guide-sleeves or pistons
    • B25D2217/0015—Anvils
    • 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
    • B25D2250/091—Electrically-powered tool components
    • B25D2250/095—Electric motors

Definitions

  • the present invention relates to a chiseling hand tool, e.g. a hammer drill or an electric chisel.
  • a chiseling hand tool e.g. a hammer drill or an electric chisel.
  • a hammer drill is out, for example EP 0 841 127 A2 known.
  • the hammer drill contains an electro-pneumatic hammer mechanism, which repetitively strikes the chisel or drill in a tool holder during operation.
  • the striking mechanism has an exciter piston, a racket and a striker in succession in the direction of impact.
  • the exciter piston and the bat convert the drive energy of a motor into the blows.
  • the striker is located between the club and chisel to seal the striking mechanism against dust.
  • the bat periodically strikes one side of the resting striker. The impact passes through the striker and is preferably transmitted to the tool pressed against the other side without thermal losses.
  • the pair of racket and striker influences the dynamic behavior of the stroke and the impact of the striker.
  • the blow is not instantaneous, but the racket contacts the striker for a short (contact) duration.
  • part of the kinetic energy of the racket is transferred to the striker as a shock and the racket experiences an elastic recoil.
  • the contact time tends to decrease for relatively light strikers and also tends to decrease for relatively short strikers.
  • the amplitude of the impact increases reciprocally with the same impact energy. Especially in the case of striking mechanisms with high impact energies, this leads to high material loads on the racket and striker. Therefore, heavy and long strikers are typically used, which promise a longer contact time, despite the associated ergonomic disadvantages of heavy strikers.
  • the contact duration also has an impact on the degradation performance that can be achieved by a user.
  • a greater degradation capacity tends to be achieved with increasing impact energy.
  • the user seems to benefit more from the increasing impact energy if the impact has a moderate amplitude and is therefore extended in time.
  • the handheld power tool has a tool holder for holding a tool on a working axis, a motor and an impact mechanism.
  • the striking mechanism includes an exciter piston coupled to the motor, a racket guided on the working axis, a pneumatic chamber closed off from the exciter piston and the racket for coupling a movement of the racket to the exciter piston and a striker arranged in the direction of impact after the racket for transmitting a blow to the Racket on the tool.
  • An interior is arranged in the die.
  • the interior extends the contact time between the racket and striker.
  • the interior is closed.
  • the impact can flow in the direction of impact in a wall around the interior without being scattered at openings in the wall.
  • the interior is also closed in the direction of impact and counter to the direction of impact in order to absorb the impact of the racket and to transmit the impact to the tool.
  • the striker has a wall that encircles the interior.
  • the wall is inclined with respect to the striking axis.
  • the sloping wall looks like a plate spring.
  • the circumferentially surrounding wall can have a constant thickness.
  • the striker has a striking surface facing the racket for receiving the stroke of the racket.
  • a maximum cross section of the interior perpendicular to the direction of impact is larger than the face.
  • Fig. 1 shows schematically a hammer drill as an example of a chiseling hand machine tool 1 .
  • the hammer drill has a tool holder 2 , in which a tool 3 can be inserted and locked.
  • the tools 3 can be, for example, drills for the chiseling processing of mineral building materials, such as concrete or stone, or chisels for the purely chiseling processing of the same building materials.
  • the hammer drill 1 contains a pneumatic hammer mechanism 4 , which periodically strikes the tool 3 in the direction of impact 5 during operation.
  • the hammer drill 1 contains an output shaft 6 , which rotates the tool holder 2 and thus the tool 3 about a working axis 7 during operation.
  • the striking mechanism 4 and the output shaft 6 are driven by a motor 8 , for example an electric motor.
  • the output shaft 6 can be switched off in chiseling hand machine tools 1 or in purely chiseling hand machine tools 1 without an output shaft.
  • the hand tool 1 has a handle 9 , by means of which the user can hold and guide the hand tool 1 in operation.
  • the handle 9 is attached to a machine housing 10 .
  • the handle 9 is preferably arranged at an end of the handheld power tool 1 or of the machine housing 10 remote from the tool holder 2 .
  • a working axis 7 parallel to the striking direction 5 and running centrally through the tool holder 2 preferably runs through the handle 9 when it can be gripped with one hand.
  • the handle 9 can be partially decoupled from the machine housing 10 by damping elements in order to dampen vibrations of the striking mechanism 4 .
  • the user can put the handheld power tool 1 into operation by means of a button 11 . Pressing the button 11 activates the motor 8 .
  • the button 11 is preferably arranged on the handle 9 , whereby this can be actuated by the hand gripping the handle 9 .
  • the motor 8 can be supplied with energy, for example, by a battery 12 which is arranged on the handheld power tool 1 .
  • the striking mechanism 4 has an excitation piston 13 , a racket 14 and a striker 15 .
  • the excitation piston 13 , the striker 14 and the striker 15 are arranged in the striking direction 5 in succession on the working axis 7 .
  • the excitation piston 13 is coupled to the motor 8 via a gear train.
  • the gear train converts the rotary movement of the motor 8 into a periodic forward and backward movement of the excitation piston 13 on the working axis 7 .
  • An exemplary gear train is based on an eccentric wheel 16 and a connecting rod 17 . Another version is based on a wobble drive.
  • the racket 14 is coupled to the movement of the excitation piston 13 by a pneumatic chamber 18 , also referred to as an air spring.
  • the pneumatic chamber 18 is closed along the working axis 7 on the drive side by the exciter piston 13 and on the tool side by the striker 14 .
  • the racket 14 is designed as a piston.
  • the pneumatic chamber 18 is closed in the radial direction by a guide tube 19 .
  • the excitation piston 13 and the striker 14 slide air-tight against the inner surface of the guide tube 19 .
  • the exciter piston can be cup-shaped.
  • the racket slides within the exciter piston.
  • the racket can be cup-shaped, the exciter piston sliding within the racket.
  • the striker 14 coupled via the pneumatic chamber 18, moves periodically parallel to the striking direction 5 between a reversal point on the drive side and a reversal point on the tool side.
  • the tool-side reversal point is predetermined by the striker 15 , on which the striker 14 strikes in the tool-side reversal point.
  • the striker 15 is movably guided parallel to the striking direction 5 between a stop 20 and the tool 3 .
  • the user presses the tool 3 against the striker 15 and indirectly the striker 15 against the stop 20 when pressing the tool 3 against a surface.
  • the position of the striker 15 adjacent to the stop 20 is referred to as the working position.
  • the striker 14 preferably strikes the striker 15 when the striker 15 is in the working position.
  • the striker 15 serves as an agent for the impact of the striker 14 on the tool 3 . Damping the shock by the striker 15 is not desirable.
  • the striker axis 21 is introduced.
  • the striking axis 21 is parallel to the striking direction 5 and runs through the center of gravity S of the striking element 15 .
  • the striking axis 21 typically coincides with the working axis 7 .
  • directions such as radial and axial refer to the Striking axis 21 ; Radial dimensions and diameters are determined perpendicular to the striking axis 21 , and a cross section relates to a plane perpendicular to the striking axis 21 .
  • the striker 15 has a body 22 , an interior 23 and optionally sealing rings 24 .
  • the body 22 is a one-piece body, preferably a metallic body.
  • One or more sealing rings 24 can enclose the body 22 .
  • the body 22 defines the outer shape of the striker 15 .
  • An outer surface 25 of the body 22 largely corresponds to the outer surface of the striker 15 .
  • the body 22 is a closed vessel that encloses the interior 23 .
  • the interior 23 is delimited by an inner surface 26 of the body 22 .
  • the volume delimited by the inner surface 26 preferably corresponds to the volume of the interior 23 .
  • the interior 23 can be hollow.
  • the hollow interior 23 is filled with a gas, for example air.
  • the body 22 and the interior 23 are preferably rotationally symmetrical to the striking axis 21 .
  • the body 22 is a one-piece, coherent body.
  • the body 22 is typically formed continuously from the same material, for example a metal, preferably steel.
  • the body 22 can be joined from several parts, in particular individual parts can be welded, soldered or glued together.
  • the body 22 is preferably monolithic.
  • Monolithic is understood to mean that the body 22 has no joining zones. In particular, no mechanical joining zones with adjoining surfaces of the parts, material-fitting joining zones, which result from welding, soldering, gluing. The joining zones typically tire quickly due to the high loads when the impact is transmitted within the striking block 15 .
  • the body 22 has two end faces which lie on the striking axis 21 .
  • One of the two end faces faces the racket 14 ; this end face is referred to below as striking face 27 .
  • the other end face faces away from the racket 14 and is referred to below as the thrust face 28 .
  • the striker 14 strikes the striking surface 27 and the striking surface 28 lies against the tool 3 .
  • the body 22 can have a cylindrical section 29 which directly adjoins the striking surface 27 .
  • the striking surface 27 forms the exposed roof surface of the cylindrical section 29 .
  • the diameter of the cylindrical section 29 is equal to the diameter 30 of the striking surface 27 .
  • the body 22 can have a cylindrical section 31 which directly adjoins the abutting surface 28 .
  • the diameters of the two cylindrical sections 29 , 31 can be the same or different.
  • the two cylindrical sections 29 , 31 can be different or the same length.
  • the striker 15 is guided on at least one of the cylindrical lateral surfaces 32 of the cylindrical sections 29 , 31 .
  • the cylindrical sections 29 , 31 are preferably solid.
  • the interior 23 is arranged between the striking surface 27 and the abutting surface 28 , lying on the striking axis 21 .
  • the interior 23 influences the characteristic of the striker 15 in the striking operation.
  • the interior 23 is preferably compressible. When the racket 14 strikes the striking surface 27 , a section of the striker 15 on the racket side can deflect into the interior 23 . This increases the contact time of the racket 14 with the striker 15 and enables a smoother transmission of the impact energy of the racket 14 to the striker 15 .
  • the striking surface 27 is an end surface of the body 22 which is essentially perpendicular to the striking axis 21 .
  • the striking surface 27 can be flat.
  • the striking surface 27 is preferably concave throughout.
  • a radius of curvature of the face 27 is typically greater than the length of the striker 15 .
  • the dome-shaped shape of the face 27 is also referred to as spherical.
  • the striking surface 27 is typically the most protruding surface in the direction of the racket 14 .
  • the striking surface 28 is shaped analogously to the striking surface 27 .
  • the butt surface 28 can be flat or crowned.
  • the thrust surface 28 typically projects furthest in the direction of impact 5 . In the embodiment shown, the striking surface 27 and the striking surface 28 limit the length of the striker 15 . Diameter 30 or surface area of the striking surface 27 and the abutting surface 28 can, as shown, be the same or different in other versions.
  • the body 22 has a bulbous section 33 which is arranged between the striking surface 27 and the abutting surface 28 .
  • the bulbous section 33 is arranged between the two cylindrical sections 29 , 31 .
  • the bulbous section 33 protrudes radially from the striking surface 27 and the striking surface 28 .
  • the bulbous section 33 can perform several functions. Among other things, the bulbous section 33 can be provided for abutting the stop 20 .
  • the interior 23 is largely, preferably completely, arranged in the bulbous section 33 , which preferably has a larger diameter compared to the striking surface 27 , the abutting surface 28 and the cylindrical sections 29 , 31 .
  • An inner diameter 34 of the interior 23 is preferably the same as or larger than the diameter of the striking surface 27 .
  • the entire striking surface 27 can deflect into the interior 23 along the striking axis 21 virtually without internal deformation.
  • the inner diameter 34 can also be larger than the diameter of the face 27 .
  • the volume of the interior 23 has a share of at least 30%, for example at least 40%, of the volume of the striker 15 .
  • the exemplary bulbous section 33 can have a first bowl-shaped section 35 at an axial end closer to the striking surface 27 and can have a second bowl-shaped section 36 at an axial end closer to the abutting surface 28 .
  • the interior 23 lies between the shell-shaped sections 35 , 36 .
  • the bowl-shaped section 35 acts similarly to a plate spring.
  • the plate spring can temporarily store part of the impact energy as elastic deformation work and release it again after a delay. The deceleration can be adjusted via the rigidity of the shell-shaped section 35 .
  • the name bowl-shaped refers to the typical shape of a bowl.
  • a typical shell has a wall which runs around an axis and is inclined monotonically to the axis and which encloses a convex cavity in the circumferential direction.
  • the wall is preferably rotationally symmetrical to the axis.
  • the shell is closed at its narrower end by a bottom along the axis.
  • the floor can go smoothly into the wall.
  • the shell is open at the other end in the axial direction.
  • the opening is bordered by an annular edge of the wall.
  • the bowl is a vessel and preferably has no radial openings in the bottom and the peripheral wall.
  • the bowl-shaped section 35 has a bottom and an inclined, circumferential wall 37 .
  • the bottom is essentially formed by the striking surface 27 or the cylindrical section 29 associated with the striking surface 27 .
  • the wall 37 is adjacent to the floor.
  • the wall 37 runs around the striking axis 21 .
  • the wall 37 is inclined monotonically with respect to the striking axis 21 . The inclination is such that the diameter 38 of the bowl-shaped Section 35 increases with increasing distance from the face 27 , preferably increases continuously.
  • the exemplary embodiment shown has a conical, shell-shaped section 35 .
  • the wall 37 is rotationally symmetrical to the striking axis 21 .
  • the inclination of the wall 37 with respect to the striking axis 21 is constant.
  • the shell-shaped section can be bulged.
  • the inclination of the bulbous wall with respect to the striking axis 21 decreases with increasing distance from the striking axis 21 .
  • the bowl-shaped section can be designed in a trumpet shape. The inclination of the trumpet-shaped wall with respect to the striking axis 21 decreases with increasing distance from the striking axis 21 .
  • An inclination of the wall 37 with respect to the striking axis 21 is preferably in a range between 30 degrees and 60 degrees. A larger incline reduces the rigidity of the cup-shaped section 35 , whereby a greater deceleration can be achieved.
  • the rigidity of the shell-shaped section 35 and the deceleration can also be adjusted by the wall thickness 39 of the wall 37 .
  • a smaller wall thickness 39 results in a lower rigidity.
  • the wall thickness can be constant.
  • a cross-sectional area of the bowl-shaped section 35 is constant, the wall thickness decreases with increasing diameter 30 of the bowl-shaped section 29 .
  • the wall thickness 39 can increase towards the further end of the shell-shaped section 35 .
  • the wall 37 of the shell-shaped section 35 forms an annular outer surface 40 which is inclined with respect to the striking axis 21 .
  • the outer surface 40 faces the racket 14 .
  • the outer surface 40 can rest against the stop 20 in the working position.
  • the outer surface 40 preferably has no openings.
  • An inclination of the outer surface 40 is preferably between 30 degrees and 60 degrees.
  • the inclination is preferably constant; the inclined outer surface is conical.
  • the inclination can vary along the striking axis 21 .
  • the inclined outer surface 40 merges into the striking surface 27 or into a cylindrical outer surface of the cylindrical section 31 .
  • the wall 37 of the bowl-shaped section 35 forms an inner surface 41 which delimits part of the interior 23 of the body 22 .
  • the inner surface 41 is inclined monotonically with respect to the striking axis 21 .
  • the inclination of the inner surface 41 can be constant along the striking axis 21 . In other embodiments, the slope varies along the striking axis 21 . For example, the inclination can decrease with increasing radial distance from the striking axis 21 .
  • An inclination of the inner surface 41 is preferably in the range between 30 degrees and 60 degrees.
  • the inner diameter 34 of the inner surface 41 is larger than the diameter 30 of the striking surface 27 .
  • the bowl-shaped section 36 closer to the abutting surface 28 is formed analogously to the bowl-shaped section 35 closer to the striking surface 27 .
  • the cup-shaped section 36 has an inclined wall 42 which defines an outer surface 43 and an inner surface 44 .
  • the inclination of the two walls 37 , 42 can be the same or different.
  • the two shell-shaped sections 35 , 36 can directly adjoin one another.
  • the interior 23 of the striker 15 is closed off by the two inner surfaces 41 , 44 .
  • an annular section 45 can be arranged between the bowl-shaped sections 35 , 36 .
  • the annular section connects the two shell-shaped sections 35 , 36 .
  • the interior 23 is closed off by the shell-shaped sections 35 , 36 and the optional annular section.
  • the interior 23 of the striker 15 is closed off by the two inner surfaces 41 , 44 of the shell-shaped sections 35 , 36 and an inner surface of the annular section.
  • FIG Fig. 3 A further embodiment of an anvil 46 is shown in FIG Fig. 3 shown.
  • the striker 46 has a striking surface 27 , a striking surface 28 , a shell-shaped section 35 closer to the striking surface 27 and a shell-shaped section 36 closer to the striking surface 28 .
  • the anvil 46 has a two-part interior 47 .
  • a disk 48 is arranged between the first bowl-shaped section 35 and the second bowl-shaped section 36 .
  • the disk 48 is preferably solid.
  • the disk 48 preferably has a cylindrical outer surface, the outer diameter of which is equal to the adjoining shell-shaped sections 35 , 36 .
  • the cylindrical sections 29 , 31, which are located along the striking axis 21 contribute to a very large proportion to the mass of the striker 15 .
  • the middle, bulbous section 33 makes only a small contribution to the mass of the striker 15 .
  • This mass distribution proves to be unfavorable for the impact behavior and resonance of the striker 15 after one Blow.
  • the disk 48 in the bulbous section 49 of Fig. 3 increases the mass fraction near the center of gravity S of the striker 15 in order to improve the dynamic behavior of the striker 15 .
  • FIG Fig. 4 Another embodiment of the striker 50 is shown in FIG Fig. 4 shown, which takes up the concept of a disc 48 , but without dividing the interior 23 .
  • An annular section 51 is arranged between the two shell-shaped sections 35 , 36 .
  • a wall 52 has a varying wall thickness 39 , which decreases continuously with increasing distance from the center of gravity S of the striker 15 .
  • the interior 23 is preferably predominantly filled with a gas, gas mixture, for example air.
  • the volume fraction of the gas is at least 75% of the interior 23 .
  • the interior 23 is preferably completely filled with the gas.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
EP18215552.3A 2018-12-21 2018-12-21 Machine-outil portative Withdrawn EP3670097A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP18215552.3A EP3670097A1 (fr) 2018-12-21 2018-12-21 Machine-outil portative
CN201980074525.0A CN113015600A (zh) 2018-12-21 2019-12-13 便携式动力工具
EP19817337.9A EP3898118B1 (fr) 2018-12-21 2019-12-13 Machine-outil de burinage portative
PCT/EP2019/085123 WO2020126924A1 (fr) 2018-12-21 2019-12-13 Machine-outil portative
US17/312,093 US12479077B2 (en) 2018-12-21 2019-12-13 Portable power tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18215552.3A EP3670097A1 (fr) 2018-12-21 2018-12-21 Machine-outil portative

Publications (1)

Publication Number Publication Date
EP3670097A1 true EP3670097A1 (fr) 2020-06-24

Family

ID=64901411

Family Applications (2)

Application Number Title Priority Date Filing Date
EP18215552.3A Withdrawn EP3670097A1 (fr) 2018-12-21 2018-12-21 Machine-outil portative
EP19817337.9A Active EP3898118B1 (fr) 2018-12-21 2019-12-13 Machine-outil de burinage portative

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP19817337.9A Active EP3898118B1 (fr) 2018-12-21 2019-12-13 Machine-outil de burinage portative

Country Status (4)

Country Link
US (1) US12479077B2 (fr)
EP (2) EP3670097A1 (fr)
CN (1) CN113015600A (fr)
WO (1) WO2020126924A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR390420A (fr) * 1908-05-20 1908-10-05 Camille Bornet Perfectionnements aux pistons percuteurs des marteaux perforateurs pour mines et carrières
EP0841127A2 (fr) 1996-11-11 1998-05-13 HILTI Aktiengesellschaft Appareil à main entraîné par moteur avec un dispositif de sécurité dans le cas d'outil de blocage
EP1955823A1 (fr) * 2007-02-08 2008-08-13 HILTI Aktiengesellschaft Machine-outil manuelle dotée d'une sonnette pneumatique
WO2012094800A1 (fr) * 2011-01-10 2012-07-19 Bosch Power Tools (China) Co., Ltd. Outil à impact

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR374923A (fr) 1907-02-21 1907-06-26 Camille Bornet Marteau perforateur
US1167975A (en) * 1914-05-21 1916-01-11 Engineering Products Corp Pneumatic-tool piston.
US3746073A (en) * 1971-12-01 1973-07-17 Amsted Ind Inc Method of casting hollow metal balls
SU517390A1 (ru) * 1974-01-02 1976-06-15 Центральный Научно-Исследовательский Институт Технологии Машиностроения Устройство дл центробежного лить несбалансированных заготовок
DE3304916A1 (de) * 1983-02-12 1984-08-16 Robert Bosch Gmbh, 7000 Stuttgart Bohrhammer
DE4418103A1 (de) * 1994-05-24 1995-11-30 Hilti Ag Bohr- und/oder Meisselgerät
JP3424870B2 (ja) * 1995-02-28 2003-07-07 株式会社マキタ 打撃工具の空打ち防止装置
JP3459493B2 (ja) * 1995-05-25 2003-10-20 株式会社マキタ 打撃工具
DE10157831B4 (de) * 2001-11-24 2004-06-24 Robert Bosch Gmbh Handwerkzeugmaschine mit einem ein Werkzeug aufnehmenden Döpper
DE10209293A1 (de) 2002-03-01 2003-09-18 Hilti Ag Pneumatisches Schlagwerk
JP4179159B2 (ja) * 2003-12-18 2008-11-12 日立工機株式会社 打撃工具
DE102004028371A1 (de) * 2004-06-11 2005-12-29 Hilti Ag Schlagende Werkzeugmaschine mit Spülkopf
DE102005000042A1 (de) * 2005-04-25 2006-10-26 Hilti Ag Bohr-oder Meisselhammer
JP4702027B2 (ja) * 2005-05-26 2011-06-15 パナソニック電工株式会社 ハンマードリル
US7832498B2 (en) * 2007-06-15 2010-11-16 Makita Corporation Impact tool
CA2665298C (fr) * 2008-05-03 2016-03-01 Earth Tool Company, Llc Outil a percussion pneumatique
EP2127820A1 (fr) * 2008-05-26 2009-12-02 Max Co., Ltd. Outil d'enfoncement
DE102011075765A1 (de) * 2011-05-12 2012-11-15 Hilti Aktiengesellschaft Handwerkzeugmaschine
CN202163494U (zh) * 2011-06-16 2012-03-14 浙江吉利汽车研究院有限公司 一种车辆吸能梁结构
GB201112829D0 (en) * 2011-07-26 2011-09-07 Black & Decker Inc Hammer
DE102012212231A1 (de) * 2012-07-12 2014-01-16 Hilti Aktiengesellschaft Handwerkzeugmaschine
EP3028818A1 (fr) * 2014-12-03 2016-06-08 HILTI Aktiengesellschaft Machine-outil portative
CN105113507A (zh) * 2014-12-22 2015-12-02 合肥轩明信息科技有限公司 一种液压打桩锤
CN206600146U (zh) * 2017-01-20 2017-10-31 象山埃尔克森智能科技有限公司 一种加大扶正冲击力度的冲击装置
CN107215442B (zh) * 2017-05-17 2023-10-20 上海工程技术大学 一种反式充气方法及其装置
CN207154920U (zh) * 2017-09-26 2018-03-30 迈科图（厦门）科技有限公司 一种自动打口器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR390420A (fr) * 1908-05-20 1908-10-05 Camille Bornet Perfectionnements aux pistons percuteurs des marteaux perforateurs pour mines et carrières
EP0841127A2 (fr) 1996-11-11 1998-05-13 HILTI Aktiengesellschaft Appareil à main entraîné par moteur avec un dispositif de sécurité dans le cas d'outil de blocage
EP1955823A1 (fr) * 2007-02-08 2008-08-13 HILTI Aktiengesellschaft Machine-outil manuelle dotée d'une sonnette pneumatique
WO2012094800A1 (fr) * 2011-01-10 2012-07-19 Bosch Power Tools (China) Co., Ltd. Outil à impact

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US12479077B2 (en) 2025-11-25
EP3898118B1 (fr) 2023-03-01
CN113015600A (zh) 2021-06-22
US20220371171A9 (en) 2022-11-24
EP3898118A1 (fr) 2021-10-27
US20220024013A1 (en) 2022-01-27
WO2020126924A1 (fr) 2020-06-25

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