EP3302881B1 - Outils de percussion avec fonctionnalités d'alignement de couronne dentée - Google Patents

Outils de percussion avec fonctionnalités d'alignement de couronne dentée Download PDF

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Publication number
EP3302881B1
EP3302881B1 EP16804550.8A EP16804550A EP3302881B1 EP 3302881 B1 EP3302881 B1 EP 3302881B1 EP 16804550 A EP16804550 A EP 16804550A EP 3302881 B1 EP3302881 B1 EP 3302881B1
Authority
EP
European Patent Office
Prior art keywords
ring gear
housing
endbell
front housing
power tool
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.)
Active
Application number
EP16804550.8A
Other languages
German (de)
English (en)
Other versions
EP3302881A1 (fr
EP3302881A4 (fr
Inventor
Jason Christopher Bartoszek
Joshua Odell Johnson
Douglas Fornell Leavitt
Thomas S. Dougherty
Mark T. Mcclung
Sean C. Ely
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.)
Ingersoll Rand Industrial US Inc
Original Assignee
Ingersoll Rand Industrial US Inc
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 Ingersoll Rand Industrial US Inc filed Critical Ingersoll Rand Industrial US Inc
Priority to EP20194822.1A priority Critical patent/EP3819083B1/fr
Priority claimed from PCT/US2016/035797 external-priority patent/WO2016196979A1/fr
Publication of EP3302881A1 publication Critical patent/EP3302881A1/fr
Publication of EP3302881A4 publication Critical patent/EP3302881A4/fr
Application granted granted Critical
Publication of EP3302881B1 publication Critical patent/EP3302881B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/02—Construction of casings, bodies or handles
    • 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
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • 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

Definitions

  • the present invention relates, generally, to power tools and, more particularly, to a hand-held power tool according to the preamble of claim 1, including a ring gear alignment feature.
  • a hand-held power tool according to the preamble of claim 1, including a ring gear alignment feature.
  • Such a tool is known from US 2013/0247706 A1 .
  • Many power tools include gear assemblies configured to translate rotational forces produced by a motor into rotation of an output spindle of the power tool.
  • gear assemblies configured to translate rotational forces produced by a motor into rotation of an output spindle of the power tool.
  • certain features on the power tool include piloting features to assist assembling certain structures and keep them fixed relative to other structures.
  • the invention provides a hand-held power tool according to claim 1, which comprises a housing, a motive source, a front endbell, an output shaft, a front housing, a gear set assembly, a first set of piloting features, and a second set of piloting features.
  • the housing supports the motive source and includes a front endbell.
  • the output shaft protrudes from an output end at the front endbell of the housing.
  • the output shaft is also functionally coupled to the motive source such that the output shaft rotates in response to activation of the motive source when the motive source is supplied with power.
  • the front housing defines an interior space. The output shaft is located in the interior space of the front housing.
  • the gear set assembly is located in the interior space of the front housing, and is configured to transfer rotation from the motive source to an output spindle.
  • the gear set assembly also includes a ring gear, wherein the ring gear further comprises an annular ring body having a plurality of teeth located on the interior periphery of the annular ring body and a surface located on an exterior periphery of the annular ring body opposite the interior periphery.
  • the ring gear surrounds a portion of the output shaft and abuts the front endbell of the housing.
  • the surface of the exterior periphery of the ring gear abuts an interior surface of the front housing.
  • the first set of piloting features is located on the interior surface of the front housing and on the surface of the exterior periphery of the ring gear, and is configured to prevent movement of the ring gear relative to the motive source and the front housing.
  • the second set of piloting features is located on the front housing and on the endbell of the housing, and is configured to prevent the front housing from moving relative to the housing.
  • the front housing being a hammer case; the impact mechanism being supported in the hammer case; the front housing being attached to the housing with fasteners; the gear set assembly including a planetary gear set; the first set of piloting features further comprise one or more grooves formed in the interior surface of the front housing, and one or more corresponding ridges formed on the surface of the exterior periphery of the annular ring body of the ring gear, wherein the one or more grooves are configured to receive the one or more corresponding ridges to prevent movement between the front housing and the ring gear; the first set of piloting features having one or more grooves formed in the surface of the exterior periphery of the annular ring body of the ring gear, and one or more corresponding ridges formed on the interior surface of the front housing, wherein the one or more grooves are configured to receive the one or more corresponding ridges to prevent movement between the front housing and the ring gear; the second set of piloting features having one or more
  • a hand-held power tool which comprises a housing, a motive source, a front endbell, an output shaft, a front housing, and a gear set assembly.
  • the housing supports motive source, and includes the front endbell.
  • the output shaft protrudes from an output end at the front endbell of the housing, and is functionally coupled to the motive source such that the output shaft rotates in response to activation of the motive source when the motive source is supplied with power.
  • the front housing defines an interior space, and the output shaft is located in that interior space.
  • the gear set assembly is located in the interior space of the front housing, and is configured to transfer rotation from the motive source to an output spindle.
  • the gear set assembly also includes a ring gear characterized by an annular ring body having a plurality of teeth located on the interior periphery of the annular ring body and a surface located on an exterior periphery of the annular ring body opposite the interior periphery.
  • the ring gear surrounds a portion of the output shaft and abuts the front endbell of the housing.
  • the front housing and ring gear further include one or more piloting features, each of the one or more piloting features being configured to mate the front housing with the ring gear.
  • the above and other embodiments of the present disclosure also comprise: one or more piloting features configured to mate the front housing with the front endbell; the one or more piloting features including one or more grooves formed in an interior surface of the front housing, and one or more corresponding ridges formed on a surface of an exterior periphery of the ring gear, wherein the one or more grooves are configured to receive the one or more corresponding ridges to prevent movement between the front housing and the ring gear; the one or more piloting features further comprise one or more grooves formed in the surface of the exterior periphery of the ring gear, and one or more corresponding ridges formed on the interior surface of the front housing, wherein the one or more grooves are configured to receive the one or more corresponding ridges to prevent movement between the front housing and the ring gear.
  • a hand-held power tool which comprises a housing, a motive source, a front endbell, an output shaft, a front housing, and a gear set assembly.
  • the housing supports the motive source.
  • the housing includes the front endbell.
  • the output shaft protrudes from an output end at the front endbell of the housing, and is functionally coupled to the motive source such that the output shaft rotates in response to activation of the motive source when the motive source is supplied with power.
  • the front housing defines an interior space, and the output shaft is located in that interior space.
  • the gear set assembly is located in the interior space of the front housing, and is configured to transfer rotation from the motive source to an output spindle.
  • the gear set assembly also includes a ring gear characterized by an annular ring body having a plurality of teeth located on the interior periphery of the annular ring body, and a surface located on an exterior periphery of the annular ring body opposite the interior periphery.
  • the ring gear surrounds a portion of the output shaft and abuts the front endbell of the housing.
  • the ring gear is insert molded into the front endbell of the housing such that ring gear is restrained against both axial and rotational movement relative to the front endbell.
  • the power tool 10 is illustratively embodied as a cordless, electric power tool.
  • the power tool 10 is shown in FIG. 1 as a pistol-grip style cordless electric impact tool, which includes an impact mechanism in-line with an output of the tool 10.
  • the power tool 10 may be embodied as another type of impact tool, such as an angle impact tool in which the output of the tool 10 is disposed at an angle (e.g., a right angle) to the impact mechanism.
  • power tool 10 may include a motive source such as a motor including an electric motor, or a pneumatic motor, for example.
  • the illustrative power tool 10 includes a tool housing 12 and a hammer case 14 as shown in FIG. 1 .
  • the tool housing 12 defines a body 16, a back cap 18, and a handle 20.
  • the body 16 defines an interior space 22 in which a motor assembly 24 of the tool 10 is positioned.
  • motor assembly 24 may include a motive source such as an electric motor (either corded or cordless), air, or other fluid motor.
  • the back cap 18 is coupled to the body 16 when the tool 10 is assembled to close off the interior space 22 and define a back end 26 that is positioned opposite the hammer case 14 of the tool 10.
  • the back cap 18 is coupled to the body 16 using fasteners 28 (best seen in FIG. 4 ) that extend through the back cap 18 and into the motor assembly 24 ( see Figs. 5 , 7, and 8 ).
  • the handle 20 of the tool housing 12 extends away from the body 16 and is configured to be graspable by a user of the tool 10.
  • a power source connection 30 is positioned at an end 32 of the handle 20 opposite the body 16.
  • the power source connection 30 may be configured to connect to any source of power, such as, for example, a battery, a source of motive fluid, or an outlet connected to an electrical grid.
  • a power source 34 of the power tool 10 is a battery attached to the power source connection 30.
  • the tool 10 includes a number of user-selectable input devices, which may be embodied as triggers, switches, or knobs configured to allow the user to adjust one or more features of the power tool 10.
  • the handle 20 includes trigger 36 configured to, among other things, turn an electric motor 38 ( see Fig. 6 ) on/off in use of the tool 10.
  • a Forward/Neutral/Reverse (“F/N/R”) switch 40 is positioned in the handle 20 near the body 16 and the trigger 36.
  • the F/N/R switch 40 is configured to control the direction of rotation of the motor 38.
  • a control knob 42 is positioned on the back cap 18 of the tool 10 (as best seen in FIG. 4 ) and is configured to adjust the mode of operation of the power tool 10.
  • the hammer case 14 is positioned on the body 16 of the tool housing 12 opposite the back cap 18.
  • the hammer case 14 includes a tool end 44 configured to couple to the tool housing 12 and an output end 46 that includes an aperture 48 through which an output spindle 50 of the tool 10 protrudes.
  • the hammer case 14 defines an interior space 52 in which a gear assembly 54 and an impact mechanism (not shown) are housed.
  • the hammer case 14 is removably coupled to the tool housing 12 through one or more fasteners (not shown).
  • the hammer case 14 may be removably coupled to the tool housing 12 via other mechanisms (e.g., a snap fit).
  • the motor assembly 24 includes the electric motor 38, a front endbell 56, and a rear endbell 58.
  • the electric motor 38 is illustratively embodied as a brushless DC electric motor.
  • the electric motor 38 includes a rotor 60 configured to drive an output shaft 62 to output mechanical power and a stationary component (i.e., a stator) 64 that extends around the rotor 60.
  • the output shaft 62 is functionally coupled to the output spindle 50 via the gear assembly 54.
  • the rear endbell 58 is positioned in the interior space 22 to be near the back cap 18 and the front endbell 56 is positioned such that it is enclosed in the interior space 22 of the tool housing 12 and the interior space 52 of the hammer case 14 (as best seen in FIG. 7 ).
  • the rotor 60 and the stator 64 of the motor 38 are positioned between the two endbells 56, 58.
  • the front endbell 56 and the rear endbell 58 cooperate to align the rotor 60 and the stator 64 so that the rotor 60 and the stator 64 extend parallel to a central axis 66 of the motor 38.
  • the illustrative gear assembly 54 may be embodied as, or include, a planetary gear set that is configured to transfer rotation of the output shaft 62 of the motor 38 to an impact mechanism of the tool 10 housed in the hammer case 14.
  • the gear assembly 54 includes a ring gear 68 positioned in the interior space 52 of the hammer case 14.
  • the ring gear 68 surrounds the output shaft 62 and abuts the front endbell 56.
  • the ring gear 68 is formed as an annular ring with an inner surface 70 that includes a plurality of gear teeth 72 and an outer surface 74 configured to abut an inner surface 76 of the hammer case 14.
  • piloting features 90 are integrated into the hammer case 14, the front endbell 56, and the ring gear 68.
  • the piloting features 90 are configured to align the hammer case 14, the front endbell 56, and the ring gear 68 with one another.
  • the piloting features 90 are also configured to prevent rotation of the ring gear 68 relative to the motor assembly 24 and the hammer case 14.
  • the piloting features 90 include one or more grooves 92 formed in the inner surface 76 of the hammer case 14, one or more corresponding ridges 94 formed on the outer surface 74 of the ring gear 68, and one or more corresponding ridges 96 formed on an outer surface 98 of the front endbell 56.
  • Each groove 92 is sized to receive both a corresponding ridge 94 and a corresponding ridge 96.
  • Each groove 92 extends axially along the inner surface 76 of the hammer case 14 from the tool end 44.
  • the dimensions of each ridge 94 are approximately the same as the dimensions of each corresponding ridge 96.
  • Each ridge 94 is positioned along the outer surface 74 of the ring gear 68 and each ridge 96 is positioned along the outer surface 98 of the front endbell 56.
  • both sets of ridges 94, 96 are spaced evenly around the outer surfaces of their respective structures, the ring gear 68 and the front endbell 56.
  • the hammer case 14 defines an inner diameter that is sized to match an outer diameter of the ring gear 68 and an outer diameter of the front endbell 56.
  • tool 10 is illustratively shown as including four grooves 92, four ridges 94, and four ridges 96, it will be appreciated that the tool 10 may include any number of grooves 92, corresponding ridges 94, and corresponding ridges 96 in other embodiments.
  • the user aligns the ridges 94 with corresponding ridges 96, aligns the grooves 92 of the hammer case 14 with the now aligned ridges 94, 96, and advances the hammer case 14 axially along the central axis 66 toward the tool housing 12 until the tool end 44 of the hammer case 14 contacts the tool housing 12.
  • the grooves 92 first pass over the ridges 94 and then pass over the ridges 96.
  • the piloting features 90 are configured to secure the ring gear 68 relative to the front endbell 56 such that the ring gear 68 cannot rotate relative to the motor assembly 24.
  • the grooves 92 of the hammer case 14 define a flange surface 100 that is configured to clamp the ring gear 68 against the front endbell 56 when the hammer case 14 is securely fastened to the tool housing 12.
  • the ring gear 68 is coupled directly to the front endbell 56.
  • the position of the ring gear 68 relative to the front endbell 56 is instead secured through the piloting features 90 of the hammer case 14.
  • the hammer case 14 is piloted by the front endbell 56, while the hammer case 14 pilots the ring gear 68.
  • Such an embodiment reduces the number of parts of the tool 10 and may reduce the length of the tool 10 by removing connectors between the ring gear 68 and the front endbell 56.
  • the piloting features 90 may include any number of grooves 92 and ridges 94, 96.
  • the illustrative piloting features 90 of FIGS. 7 and 8 include four grooves 92 spaced evenly around the inner surface 76 ( see Fig. 6 ) of the hammer case 14, four corresponding ridges 94 spaced evenly around the outer surface 74 ( see Fig. 6 ) of the ring gear 68, and four corresponding ridges 96 spaced evenly around the outer surface 98 of the front endbell 56.
  • Each groove 92 is configured to mate with both a ridge 94 and a ridge 96.
  • FIG. 7 and 8 include four grooves 92 spaced evenly around the inner surface 76 ( see Fig. 6 ) of the hammer case 14, four corresponding ridges 94 spaced evenly around the outer surface 74 ( see Fig. 6 ) of the ring gear 68, and four corresponding ridges 96 spaced evenly around the outer surface 98 of the front endbell 56.
  • the piloting features 102 include three grooves 104 formed in the hammer case 14 with three corresponding ridges 106 formed in the ring gear 68 and three corresponding ridges in the front endbell 56 (not shown).
  • the piloting features 108 include six grooves 110 formed in the hammer case 14 with six corresponding ridges 112 formed in the ring gear 68 and six corresponding ridges in the front endbell 56 (not shown).
  • piloting features 90, 102, 108 have been illustrated and described herein as including grooves 92, 104, 110 formed in the hammer case 14 and ridges 94, 96, 106, 112 formed on the ring gear 68 and front endbell 56, it is contemplated that the piloting features 90, 102, 108 may take other forms in other embodiments of the power tool 10.
  • the piloting features might alternatively include ridges formed on the hammer case 14 and corresponding grooves formed in the ring gear 68 and front endbell 56.
  • a front endbell 256 is configured to surround the ring gear 268, and thereby align and secure the ring gear 268 in relation to the motor assembly 24 of the power tool 10.
  • a hammer case 214 is configured to operatively couple to the tool housing 12, the front endbell 256, and the ring gear 268.
  • the front endbell 256 includes an annular flange 202 formed in a front end 204 of the front endbell 256.
  • the annular flange 202 includes an inner surface 206 that is configured to form a cavity 208 that is sized to receive a portion of the ring gear 268.
  • the inner surface 206 operatively couples to an outer surface 210 of the ring gear 268 when the ring gear 268 is assembled in the power tool 10.
  • the front endbell 256 is configured to secure the ring gear 268 and prevent the ring gear 268 from rotating during normal operation of the power tool 10.
  • the hammer case 214 is configured to be secured to an outer surface 210 of the tool housing 12.
  • the hammer case 214 includes a housing flange 212 and a gear assembly surface 216 formed in a motor end 218 of the hammer case 214.
  • the housing flange 212 is configured to operatively couple to the outer surface 210 of the tool housing 12, and thereby secure the hammer case 214 to the tool housing 12.
  • the gear assembly surface 216 is configured to abut the annular flange 202 of the front endbell 256 and the ring gear 268 of the gear assembly 54 ( see, also, Fig. 5 ). By so doing, the hammer case 214 cooperates with the front endbell 256 to secure the ring gear 268 to the power tool 10.
  • FIG. 12 another embodiment of alignment features 300 for a ring gear 368 of a power tool 10 is shown.
  • the ring gear alignment features 300 are configured to align the ring gear 368 with the motor assembly 24 ( see Fig. 11 ) and allow the power tool 10 to function properly.
  • the ring gear 368 is insert molded to a front endbell 356 of the motor assembly 24.
  • a hammer case 314 is operatively coupled to the ring gear 368, the front endbell 356, and the tool housing 12 and is configured to seal the interior space 22 of the power tool 10.
  • the hammer case 314 includes a nose piece 302 attached to it.
  • the hammer case 314 includes a tapered section 304 and a flange 306 formed in the tool end 44 of the hammer case 314.
  • the tapered section 304 of the hammer case 314 is configured to operatively couple to an inner surface 310 of the tool housing 12.
  • the flange 306 is configured to operatively couple to the outer surfaces 322, 328 of the ring gear 368.
  • the ring gear 368 is formed as an annular ring that includes an inner ring surface 318 having a plurality of teeth 320 formed therein and an outer surface 322 having one or more fastener guide bores 324 formed therein.
  • the ring gear 368 extends between a motor end 326 and another opposite end.
  • a lip 330 is formed in the motor end 326 of the ring gear 368 causing the motor end 326 to define a motor end opening 332 having a smaller diameter than an opposite end opening 334 defined in the opposite end of the ring gear 368.
  • the lip 330 is configured to cooperate with the front endbell 356 to secure the ring gear 368 to the motor assembly 24 ( see, also, Figs. 11 and 12 ).
  • the ring gear 368 is secured to the motor assembly 24 by insert molding the ring gear 368 directly into the front endbell 356.
  • one or more grooves 336 are formed in the motor end 326 of the ring gear 368 and are configured to secure ring gear 368 to the front endbell 356.
  • hot plastic enters into the grooves 336.
  • the grooves 336 cooperate with the plastic of the front endbell 356 to secure the ring gear 368 to the front endbell 356 such that the ring gear 368 cannot rotate relative to the front endbell 356.
  • the grooves 336 may be replaced by other raised or recessed features that cooperate with the front endbell 356 to secure the ring gear 368 against rotation relative to the front endbell 356.
  • the front endbell 356 includes an outer body 338 sized to receive the ring gear 368.
  • the outer body 338 is configured to operatively couple to the outer surface 322 of the ring gear 368 ( see Figs. 13 and 14 ).
  • One or more fastener guide bores 340 are formed in the outer body 338.
  • the fastener guide bores 340 of the front endbell 356 are configured to align with the corresponding fastener guide bores 324 formed in the ring gear 368.
  • the fastener guide bores 324, 340 cooperate with fasteners (not shown) to secure the motor assembly 24 and the gear assembly 54 in the tool housing 12.
  • fasteners are able to pass through the motor assembly 24 and be received by the hammer case 314.
  • the front endbell 356 also includes an inner body 342 configured to interact with the lip 330 of the ring gear 368 and secure the ring gear 368 to the front endbell 356.
  • the plastic of the front endbell 356 forms around the lip 330 thereby joining the ring gear 368 to the front endbell 356.
  • the insert molding process is accomplished by injecting thermoplastic into a mold in which the ring gear 368 has been placed. The thermoplastic eventually hardens and thereby forms the front endbell 356.
  • the inner body 342 of the front endbell 356 is also configured to pilot a camshaft 372 of the impact mechanism 370 of the tool 10.
  • the camshaft 372 is integrally formed to include a planetary gear holder at a distal end 374 of the camshaft 372.
  • the inner body 342 of the front endbell 356 is formed to include a recessed annular surface 344 that engages the distal end 374 of the camshaft 372 when the tool 10 is assembled.
  • the inner body 342 of the front endbell 356 is also formed to include a wall 346 that extends away from the recessed annular surface 344 (the wall 346 also forming a part of the inner body 342 that engages and retains the lip 330 of the ring gear 368, as described above).
  • a wall 346 that extends away from the recessed annular surface 344 (the wall 346 also forming a part of the inner body 342 that engages and retains the lip 330 of the ring gear 368, as described above).
  • an inner diameter of the wall 346 surrounds a portion of an outer diameter of the distal end 374 of the camshaft 372 such that the front endbell 356 pilots the camshaft 372.
  • This configuration eliminates the need for a separate bearing and/or additional components to support the distal end 374 of the camshaft 372, thereby reducing the complexity and overall length of the tool 10.

Claims (15)

  1. Un outil électrique portatif (10) comprenant :
    un boîtier (12) supportant une source de mouvement ;
    dans lequel le boîtier comprend une cloche d'extrémité avant (56) ;
    un arbre de sortie (62) faisant saillie à partir d'une extrémité de sortie (46) à la cloche d'extrémité avant du boîtier ;
    dans lequel l'arbre de sortie est couplé fonctionnellement à la source de mouvement de sorte que l'arbre de sortie tourne en réponse à l'activation de la source de mouvement lorsque la source de mouvement est alimentée en énergie ;
    un boîtier avant définissant un espace intérieur (22) ;
    dans lequel l'arbre de sortie est situé dans l'espace intérieur du boîtier avant ; et
    un ensemble d'engrenages (54) situé dans l'espace intérieur du boîtier avant ; dans lequel l'ensemble d'engrenages est configuré pour transférer la rotation de l'arbre de sortie à une broche de sortie (50) ;
    dans lequel l'ensemble d'engrenages comprend une couronne de train planétaire (68), dans lequel la couronne de train planétaire (68) comprend en outre un corps de bague annulaire ayant une pluralité de dents (72) situées sur la périphérie intérieure du corps de bague annulaire et une surface (74) située sur une périphérie extérieure du corps de bague annulaire opposée à la périphérie intérieure ;
    dans lequel la couronne de train planétaire entoure une partie de l'arbre de sortie et vient en butée contre la cloche d'extrémité avant du boîtier, la cloche d'extrémité avant (56) étant enfermée dans l'espace intérieur du boîtier avant ;
    dans lequel la surface située sur la périphérie extérieure de la couronne de train planétaire vient en butée contre une surface intérieure (76) du boîtier avant ;
    dans lequel le boîtier avant et la couronne de train planétaire comprennent un ou plusieurs dispositifs de pilotage (90, 102, 108), chacun de l'un ou plusieurs des dispositifs de pilotage étant configuré pour accoupler le boîtier avant avec la couronne de train planétaire ;
    caractérisé en ce que l'un ou plusieurs des dispositifs de pilotage comprennent :
    un premier ensemble de dispositifs de pilotage (92, 94) situés sur la surface intérieure du boîtier avant et sur la surface de la périphérie extérieure de la couronne de train planétaire ;
    dans lequel le premier ensemble de dispositifs de pilotage est configuré pour empêcher le mouvement de la couronne de train planétaire par rapport à la source de mouvement et au boîtier avant ; et
    l'outil électrique portatif comprenant en outre :
    un deuxième ensemble de dispositifs de pilotage (92, 96) situés sur le boîtier avant et sur la cloche d'extrémité du boîtier ;
    dans lequel le deuxième ensemble de dispositifs de pilotage est configuré pour empêcher le boîtier avant de se déplacer par rapport au boîtier.
  2. L'outil électrique portatif (10) selon la revendication 1,
    dans lequel le premier ensemble de dispositifs de pilotage comprend en outre une ou plusieurs rainures (92) formées dans la surface intérieure du boîtier avant, et une ou plusieurs arêtes correspondantes (94) formées sur la surface (74) de la périphérie extérieure du corps de bague annulaire de la couronne de train planétaire (68), dans lequel l'une ou plusieurs des rainures sont configurées pour recevoir l'une ou plusieurs des arêtes correspondantes pour empêcher le mouvement entre le boîtier avant et la couronne de train planétaire.
  3. L'outil électrique portatif (10) selon la revendication 2, dans lequel le deuxième ensemble de dispositifs de pilotage comprend en outre une ou plusieurs arêtes correspondantes (96) formées sur une surface extérieure de la cloche d'extrémité avant (56) du boîtier, dans lequel chacune de l'une ou plusieurs des rainures (92) du boîtier avant est dimensionnée pour recevoir à la fois l'une ou plusieurs des arêtes correspondantes (94) formées sur la surface (74) de la périphérie extérieure du corps de bague annulaire de la couronne de train planétaire (68) et l'une ou plusieurs des arêtes correspondantes formées sur une surface extérieure de la cloche d'extrémité avant, dans lequel chacune de l'une ou plusieurs des rainures s'étendent axialement le long de la surface intérieure du boîtier avant.
  4. L'outil électrique portatif (10) selon la revendication 3, dans lequel les dimensions de chacune de l'une ou plusieurs des arêtes (94) formées sur la surface (74) de la périphérie extérieure du corps de bague annulaire de la couronne de train planétaire (68) sont sensiblement similaires aux dimensions de chacune de l'une ou plusieurs des arêtes correspondantes (96) formées sur la surface extérieure de la cloche d'extrémité avant (56).
  5. L'outil électrique portatif (10) selon la revendication 4, dans lequel l'une ou plusieurs des rainures (92) du boîtier avant s'alignent avec l'une ou plusieurs des arêtes (94) formées sur la surface (74) de la périphérie extérieure du corps de bague annulaire de la couronne de train planétaire (68) et l'une ou plusieurs des arêtes correspondantes formées sur la surface extérieure de la cloche d'extrémité avant (56) pour faire avancer le boîtier avant axialement le long d'un axe central vers le boîtier (12) pour s'engager et se fixer au boîtier.
  6. L'outil électrique portatif (10) selon la revendication 5, dans lequel l'une ou plusieurs des rainures (92) du boîtier avant comprennent une surface de bride (100) configurée pour serrer la couronne de train planétaire (68) contre la cloche d'extrémité avant (56) lorsque le boîtier avant est fixé au boîtier (12).
  7. L'outil électrique portatif (10) selon la revendication 1,
    dans lequel le premier ensemble de dispositifs de pilotage comprend en outre une ou plusieurs rainures formées dans la surface (74) de la périphérie extérieure du corps de bague annulaire de la couronne de train planétaire (68), et une ou plusieurs arêtes correspondantes formées sur la surface intérieure du boîtier avant, dans lequel l'une ou plusieurs des rainures sont configurées pour recevoir l'une ou plusieurs des arêtes correspondantes pour empêcher le mouvement entre le boîtier avant et la couronne de train planétaire.
  8. L'outil électrique portatif (10) selon la revendication 1, dans lequel le premier ensemble de dispositifs de pilotage comprend en outre une ou plusieurs arêtes formées sur le boîtier avant, une ou plusieurs rainures correspondantes formées sur la surface (74) de la périphérie extérieure de la couronne de train planétaire (68) et une ou plusieurs rainures correspondantes formées sur la cloche d'extrémité avant (56).
  9. L'outil électrique portatif (10) selon la revendication 1, dans lequel la cloche d'extrémité avant (56) est configurée pour entourer au moins une partie de la couronne de train planétaire (68) pour aligner et fixer la couronne de train planétaire par rapport à la source de mouvement, dans lequel le boîtier avant est configuré pour coupler fonctionnellement le boîtier (12), la cloche d'extrémité avant, et la couronne de train planétaire ensemble ; et
    de préférence :
    dans lequel la cloche d'extrémité avant comprend une bride annulaire (202) formée dans une extrémité avant de la cloche d'extrémité avant, dans lequel la bride annulaire comprend une surface intérieure configurée pour former une cavité (208) dimensionnée pour recevoir une partie de la couronne de train planétaire ; et
    de préférence :
    dans lequel la surface intérieure de la bride annulaire de la cloche d'extrémité se couple fonctionnellement à une surface extérieure (74) de la couronne de train planétaire pour empêcher la couronne de train planétaire de tourner pendant le fonctionnement normal.
  10. L'outil électrique portatif (10) selon la revendication 9, dans lequel le boîtier avant est configuré pour être fixé à la surface extérieure du boîtier (12), dans lequel le boîtier avant comprend une bride de boîtier (212) et une surface d'ensemble d'engrenages (216), dans lequel la bride de boîtier est configurée pour se coupler fonctionnellement à la surface extérieure du boîtier pour fixer le boîtier avant au boîtier, et dans lequel la surface d'ensemble d'engrenages est configurée pour venir en butée contre la bride annulaire de la cloche d'extrémité avant (56) et la couronne de train planétaire (68) de sorte que le boîtier avant coopère avec la cloche d'extrémité avant pour maintenir la couronne de train planétaire.
  11. L'outil électrique portatif (10) selon l'une quelconque des revendications précédentes, dans lequel le boîtier avant est un carter de marteau (14), et de préférence dans lequel un mécanisme d'impact est supporté dans le carter de marteau.
  12. L'outil électrique portatif (10) selon l'une quelconque des revendications précédentes, dans lequel le boîtier avant est fixé au boîtier (12) avec des éléments de fixation.
  13. L'outil électrique portatif (10) selon l'une quelconque des revendications précédentes, dans lequel l'ensemble d'engrenages (54) comprend un ensemble d'engrenages planétaires.
  14. L'outil électrique portatif (10) selon l'une quelconque des revendications précédentes, dans lequel la surface intérieure du boîtier avant définit un diamètre intérieur de la périphérie extérieure du corps de bague de la couronne de train planétaire (68) et un diamètre extérieur de la cloche d'extrémité avant (56).
  15. L'outil électrique portatif (10) selon la revendication 1, dans lequel le premier ensemble de dispositifs de pilotage comprend l'insert de couronne de train planétaire (68) moulé sur la cloche d'extrémité avant (56), dans lequel le boîtier avant est couplé fonctionnellement à la couronne de train planétaire, la cloche d'extrémité avant, et dans lequel le boîtier avant comprend une pièce de nez (302) située de manière adjacente à la broche de sortie (50).
EP16804550.8A 2015-06-05 2016-06-03 Outils de percussion avec fonctionnalités d'alignement de couronne dentée Active EP3302881B1 (fr)

Priority Applications (1)

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US201562171741P 2015-06-05 2015-06-05
PCT/US2016/035797 WO2016196979A1 (fr) 2015-06-05 2016-06-03 Outils de percussion avec fonctionnalités d'alignement de couronne dentée

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EP3302881A1 EP3302881A1 (fr) 2018-04-11
EP3302881A4 EP3302881A4 (fr) 2019-01-23
EP3302881B1 true EP3302881B1 (fr) 2020-09-23

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JP4084319B2 (ja) * 2004-02-23 2008-04-30 リョービ株式会社 電動工具
US7513845B2 (en) * 2006-08-01 2009-04-07 Eastway Fair Company Limited Variable speed transmission for a power tool
US7604528B2 (en) * 2008-02-28 2009-10-20 Techway Industrial Co., Ltd. Electric grinding gun
GB2474221B (en) * 2008-08-06 2012-12-12 Milwaukee Electric Tool Corp Precision torque tool
US8251158B2 (en) * 2008-11-08 2012-08-28 Black & Decker Inc. Multi-speed power tool transmission with alternative ring gear configuration
US8317350B2 (en) * 2009-02-25 2012-11-27 Black & Decker Inc. Power tool with a light for illuminating a workpiece
JP5510807B2 (ja) * 2010-03-08 2014-06-04 日立工機株式会社 インパクト工具
JP5357840B2 (ja) * 2010-07-06 2013-12-04 パナソニック株式会社 電動工具
JP5655580B2 (ja) * 2011-01-17 2015-01-21 日本電産シンポ株式会社 変速機ケース
DE102011055869A1 (de) * 2011-11-30 2013-06-06 Röhm Gmbh Bohrvorrichtung
DE102012213724B4 (de) * 2012-03-26 2023-11-30 Robert Bosch Gmbh Planetengetriebe für eine Handwerkzeugmaschine
DE102012211914B4 (de) * 2012-04-05 2023-06-15 Robert Bosch Gmbh Handwerkzeugmaschine mit einem Planetengetriebe
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Also Published As

Publication number Publication date
EP3819083B1 (fr) 2023-05-24
EP3819083A1 (fr) 2021-05-12
CN107614204A (zh) 2018-01-19
EP3302881A1 (fr) 2018-04-11
EP3302881A4 (fr) 2019-01-23
CN112276871A (zh) 2021-01-29
CN107614204B (zh) 2020-11-06

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