WO2016084742A1 - インパクト工具及びインパクト工具用スピンドルの製造方法 - Google Patents

インパクト工具及びインパクト工具用スピンドルの製造方法 Download PDF

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Publication number
WO2016084742A1
WO2016084742A1 PCT/JP2015/082728 JP2015082728W WO2016084742A1 WO 2016084742 A1 WO2016084742 A1 WO 2016084742A1 JP 2015082728 W JP2015082728 W JP 2015082728W WO 2016084742 A1 WO2016084742 A1 WO 2016084742A1
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WO
WIPO (PCT)
Prior art keywords
spindle
impact tool
joining
hole
carrier plate
Prior art date
Application number
PCT/JP2015/082728
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English (en)
French (fr)
Japanese (ja)
Inventor
信一 浦野
鈴木　康之
規生 遠藤
Original Assignee
株式会社 マキタ
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 株式会社 マキタ filed Critical 株式会社 マキタ
Priority to CN201580059102.3A priority Critical patent/CN107107316A/zh
Publication of WO2016084742A1 publication Critical patent/WO2016084742A1/ja

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    • 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
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/02—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose with means for imparting impact to screwdriver blade or nut socket

Definitions

  • the present invention relates to an impact tool such as an impact driver and an impact wrench, and a method of manufacturing a spindle for the impact tool.
  • An impact tool such as an impact driver includes an anvil having a spindle that rotates as the motor is driven, a hammer that is cam-coupled to the spindle, and a striking mechanism that includes a coil spring that biases the hammer, and the hammer serves as a final output shaft.
  • the rotation of the spindle can be converted into an intermittent rotational striking force (impact) of the hammer by the striking mechanism and applied to the anvil (for example, see Patent Document 1). ).
  • the spindle used here is integrally provided with a carrier portion that supports both support shafts of a plurality of planetary gears by front and rear disks, and is coaxial with the rotation shaft by meshing the rotation shaft of the motor at the center of the planetary gear.
  • the arrangement is known.
  • an object of the present invention is to provide an impact tool and a method for manufacturing an impact tool spindle that can be easily processed and can suppress an increase in cost even if a spindle having an integrated carrier portion is used. .
  • the invention according to claim 1 is an impact tool, which is a motor and a carrier part that rotates by driving the motor and holds the support shaft of the planetary gear at both front and rear ends in the axial direction. And a striking mechanism capable of imparting a rotational striking force to the final output shaft as the spindle rotates, and the spindle is front and rear in the axial direction with the planetary gear housing space in the carrier as a boundary. It is divided into at least two parts and formed by joining the parts.
  • the spindle in the configuration of the first aspect, includes a front spindle integrally including a front carrier plate that holds the front end of the support shaft, and a rear carrier plate that holds the rear end of the support shaft. It is divided into three parts including a rear spindle provided integrally and a joining member for joining the front carrier plate and the rear carrier plate.
  • the joining member is a two-stage diameter joining pin having a small-diameter portion projecting coaxially at both ends, and the front-side small-diameter portion is the front carrier plate.
  • the invention according to claim 4 is the configuration of claim 3, wherein the joining of the small diameter portion on the front side and the front through hole is by brazing, and the position of the front through hole on the rear surface of the front carrier plate is as follows: A circular recess for brazing is formed concentrically.
  • the joining of the rear small diameter portion and the rear through-hole is by brazing, and the rear through-hole is opened on the rear surface of the rear carrier plate. At this time, the taper portion for brazing is formed so as to expand rearward.
  • the joining of the front small-diameter portion and the front through-hole and the joining of the rear small-diameter portion and the rear through-hole are performed in each through-hole of each small-diameter portion. It is characterized by press-fitting into.
  • the invention according to claim 7 is a method of manufacturing a spindle for an impact tool integrally having a carrier portion for holding a supporting shaft of a planetary gear at both front and rear ends in the axial direction.
  • the spindle is divided into at least two parts before and after the axial direction with the planetary gear housing space in the carrier portion as a boundary, and each part is individually manufactured, and the manufactured parts are joined and assembled.
  • the support hole of the support shaft is processed after joining the parts.
  • the spindle is divided into at least two parts in the planetary gear housing space, and each part is joined and formed, so that the spindle has an integrated carrier portion.
  • processing can be easily performed, and cost increase can be suppressed.
  • the second aspect of the present invention in addition to the effect of the first aspect, by dividing the spindle into three parts, that is, the front spindle, the rear spindle, and the joining member, it is possible to obtain a form of parts that can be easily processed.
  • the accuracy of the support hole can be ensured by processing the support hole of the support shaft after joining the components.
  • FIG. 1 is a longitudinal sectional view of an impact wrench which is an example of an impact tool.
  • the impact wrench 1 has a T-shape in which a handle 3 is formed downward on a main body 2 extending in the front-rear direction.
  • An anvil 4 serving as a final output shaft protrudes from the front end of the main body 2 and is provided at the lower end of the handle 3.
  • a battery pack 6 serving as a power source is attached to the mounting portion 5.
  • the housing of the main body 2 includes a synthetic resin main body housing 7 with a handle 3 extending in the rear part for accommodating the brushless motor 8, and a metal hammer case assembled in front of the main body housing 7 to accommodate the striking mechanism 10.
  • the main body housing 7 is formed by assembling a pair of left and right half housings 7a, 7b with screws 11, 11, 11.
  • a metal gear housing 12 fitted to the rear end of the hammer case 9 is held behind the hammer case 9 in the main body housing 7.
  • the rib 13 provided on the outer periphery of the gear housing 12 is sandwiched between the main body housing 7 and the hammer case 9, and a bolt (not shown) is screwed from the rear so that the main body housing 7, the gear housing 12, and the hammer case 9 is integrated.
  • the bolt By screwing the bolt into the metal hammer case 9 in this manner, the main body housing 7, the hammer case 9, and the gear housing 12 are firmly coupled, and the durability is improved.
  • the main body housing 7 is formed by the half housings 7a and 7b, wiring can be easily performed.
  • a switch 14 with a trigger 15 projecting forward and a motor forward / reverse switching button 16 are provided on the upper portion of the handle 3, while the lower mounting portion 5 is held by a dish-like case 18 and is brushless.
  • a control circuit board 17 on which a switching element for controlling the motor 8 and a microcomputer are mounted is accommodated.
  • the control circuit board 17 is provided with a switch panel 19 having a hitting force switching button, a battery remaining capacity display lamp, and the like, and is exposed through a window 20 provided in front of the mounting portion 5.
  • the lower part of the handle 3 and the mounting part 5 are connected by assembling the left and right halves 5a and 5b forming the mounting part 5 to the connecting part 21 protruding from the lower end of the handle 3 and fixing them with screws 22 and 22.
  • the battery pack 6 has a structure in which the rails are coupled to each other by sliding from the front with respect to the mounting portion 5, and the terminal plate of the terminal block 24 provided on the mounting portion 5 together with the connection is a terminal on the battery pack 5 side And electrically connected.
  • the brushless motor 8 accommodated in the rear part of the main body housing 7 is an inner rotor type composed of a stator 25 and a rotor 26 inside thereof, as shown in FIG.
  • the stator 25 includes a cylindrical stator core 27 formed of a plurality of laminated steel plates, a front insulator 28 and a rear insulator 29 provided on front and rear end surfaces in the axial direction of the stator core 27, and the stator core 27 via the front and rear insulators 28 and 29. 6 coils 30, 30...
  • a sensor circuit board 31 and a short-circuit member 32 are attached to the rear insulator 29.
  • the rear insulator 29 is a ring-shaped integral product having the same diameter as the stator core 27. As shown in FIG. 3, the rear insulator 29 has six holding portions 33, 33,. Yes.
  • the holding portion 33 is formed by arranging a pair of protrusions 34 and 34 having grooves at predetermined intervals so that the grooves face each other.
  • a screw boss (not shown) protrudes between the holding portions 33 and 33. It is installed.
  • a pair of recesses 35 are formed on the left and right sides of the rear insulator 29, and a pair of triangular first notches 36, 36 are provided on the upper and lower sides across the recesses 35, 35. Are formed respectively.
  • a square-shaped second notch 37 is formed at the upper center of the rear insulator 29.
  • a fusing terminal 38 is held in each holding portion 33 of the rear insulator 29.
  • the fusing terminal 38 is formed by folding a band-shaped metal fitting in half, and a bent portion 40 that is bent in a convex shape is formed at an intermediate portion at one end. Therefore, when the bent side of each fusing terminal 38 is inserted into the holding portion 33 and both side edges are fitted into the grooves of the projections 34, 34, the fusing terminals 38 are concentrically arranged with the bent portion 40 outward.
  • the other end 39 is held parallel to the axial direction of the rear insulator 29 with the posture facing the inside.
  • the coil 30 is wound around the teeth of the stator core 27 by one winding in order, and each winding 30a connecting between the coils 30 and 30 wraps around the outside of the holding portion 33 to bend the fusing terminal 38. By being sandwiched between the portions 40, each fusing terminal 38 is electrically connected.
  • the sensor circuit board 31 includes three rotation detection elements (not shown) that detect the position of the permanent magnet 54 provided on the rotor 26 and output a rotation detection signal, and have an outer diameter that fits inside the holding portion 33.
  • Four protrusions 41, 41... That are donut-shaped and have outer perforations corresponding to the screw bosses of the rear insulator 29 are extended on the outer periphery. It is positioned on the rear surface of the insulator 29.
  • the signal line 42 of the rotation detection element is drawn from the lower part of the sensor circuit board 31.
  • the short-circuit member 32 is a resin ring having substantially the same diameter as the sensor circuit board 31, and four bosses 43, 43,... Into which the screw bosses of the rear insulator 29 can be fitted from the rear are integrated on the outer periphery. It protrudes to.
  • the short-circuit member 32 includes an arc-shaped sheet metal member 44 having a pair of short-circuit pieces 44A and 44A projecting diagonally, an arc-shaped sheet metal member 45 also having the short-circuit pieces 45A and 45A, and a short-circuit piece.
  • the arc-shaped sheet metal member 46 provided with 46A and 46A is insert-molded in a state of being superimposed on a concentric circle in a non-contact state.
  • the short-circuit pieces 44A, 45A, and 46A project radially from the short-circuit members 44 to 46 and correspond to the fusing terminals 38. At the tip, there are slits 47 into which the other end portions 39 of the fusing terminals 38 can be inserted. Each is formed.
  • the U-phase, V-phase, and W-phase power lines 48, 48,... Are welded to the sheet metal members 44 to 46, respectively.
  • the fusing terminal 38 electrically connected to the winding 30a between the coils 30 and 30 wound in order on the stator core 27 is electrically connected diagonally to each other by the three sheet metal members 44 to 46. Therefore, it becomes a so-called para-winding delta connection.
  • the total length of the brushless motor 8 can be minimized even if the short-circuit member 32 or the like is used. Further, since all members except the signal line 42 and the power supply line 48 are accommodated in the outer diameter of the stator core 27, the outer diameter of the product is not increased and the product becomes compact.
  • the stator 25 assembled in this manner is held at the outer periphery by supporting ribs 50 and 50 projecting in the circumferential direction on the inner surfaces of the half housings 7a and 7b of the main body housing 7 and also projects on the inner surfaces of the half housings 7a and 7b.
  • the projections (not shown) provided are respectively fitted in the recesses 35 formed on the side surface of the rear insulator 29, so that they are accommodated in a state of being positioned in the axial direction and the circumferential direction.
  • a positioning recess 51 is also formed on the outer periphery of the front insulator 28.
  • the rotor 26 is fixed around the rotating shaft 52 positioned at the shaft center, the substantially cylindrical rotor core 53 that is arranged around the rotating shaft 52 and is formed by laminating a plurality of steel plates, and the rotor core 53.
  • the permanent magnets 54 are inserted into through holes 55 formed so as to be located on four sides of a square centering on the rotation shaft 52 in the cross section of the rotor core 53 and fixed by an adhesive and / or press-fitting.
  • the rear end of the rotary shaft 52 is pivotally supported by a bearing 56 held at the rear portion of the main body housing 7, and the front end is pivotally supported by a bearing 57 held by the gear housing 12, so that the front end where the pinion 58 is formed is formed. Projecting forward of the gear housing 12.
  • a front stopper 61 is provided between the rotor core 53 and the centrifugal fan 59.
  • the front stopper 61 is a disc made of brass and having the same outer diameter as the rotor core 53, and is fixed to the rotating shaft 52 coaxially with the rotor core 53.
  • a rear stopper 62 is provided on the inner side of the sensor circuit board 31 between the rotor core 53 and the rear bearing 56.
  • the stopper 62 is a disc made of brass and having an outer diameter smaller than that of the rotor core 53.
  • the stopper 62 is coaxial with the rotor core 53 and is fixed to the rotating shaft 52 with a gap between the rotor core 53 and the stopper 62.
  • the outer diameter of the rear stopper 62 is larger than the inner circle surrounded by the four permanent magnets 54, and the rear stopper 62 is positioned behind each permanent magnet 54.
  • the spindle 63 and the striking mechanism 10 are accommodated in a space surrounded by the hammer case 9 and the gear housing 12.
  • the spindle 63 integrally has a carrier portion 64 that holds three planetary gears 65, 65,... In the rear portion.
  • the front spindle 66 and the rear spindle 67 are joined by three joining pins 68, 68,.
  • the front spindle 66 has a disk-like front carrier plate 69 at the rear end, and has a shaft shape with a small-diameter insertion portion 70 protruding from the front end.
  • a bottomed hole 71 opening rearward is formed, and a pair of V-shaped cam grooves 72, 72 are formed on the front outer peripheral surface.
  • Three front through-holes 73, 73... Are formed on the front carrier plate 69 at equal intervals in the circumferential direction on the rear surface of the front carrier plate 69.
  • the circular recess 74 for brazing the joining pin 68 is concentrically provided.
  • a thick step 75 is formed at the base of the front spindle 66 where the front carrier plate 69 is formed.
  • the front through hole 73 is open outside the stepped portion 75.
  • the rear spindle 67 has a cylindrical shape with a disc-shaped rear carrier plate 76 formed at the front end.
  • the rear spindle 67 is located near the outer periphery of the rear carrier plate 76 and is the same as the front through hole 73 of the front carrier plate 69.
  • Three rear through-holes 77, 77... Having a diameter are formed on a concentric circle having the same size as the front through-hole 73 at equal intervals in the circumferential direction.
  • a taper portion 78 for brazing the joining pin 68 is formed so as to expand rearward.
  • the joining pin 68 is a shaft body having a diameter smaller than the diameter of the circular recess 74 provided in the front carrier plate 69. As shown in FIG. 7, the joint pin 68 has a two-stage diameter in which small-diameter portions 79 and 79 are coaxially projected at both ends. It has become. The small diameter portion 79 has a diameter that can be inserted into the front and rear through holes 73 and 77 of the front and rear carrier plates 69 and 76.
  • the spindle 63 is manufactured as follows. After processing the front spindle 66, the rear spindle 67, and the joining pin 68 individually, the front small-diameter portion 79 of each joining pin 68 is made into the front through hole 73 of the front carrier plate 69, and the rear small-diameter portion 79 is made into the rear carrier. The front spindle 66 and the rear spindle 67 are temporarily joined by being inserted into the rear through holes 77 of the plate 76, respectively. Next, solder (for example, copper solder) is put in the circular recess 74 around the joining pin 68 on the rear surface of the front carrier plate 69 and melted to braze the front carrier plate 69 and the joining pin 68, and the rear carrier plate.
  • solder for example, copper solder
  • the rear carrier plate 76 and the small-diameter portion 79 are brazed by soldering and melting the tapered portion 78 of the rear through-hole 77 on the rear surface of the rear surface 76. Then, the front carrier plate 69 of the front spindle 66 and the rear carrier plate 76 of the rear spindle 67 are joined together via the three joining pins 68.
  • the front carrier plate 69 and the rear carrier plate 76 are concentrically overlapped with the step 75 of the front spindle 66 on the inner side of the front and rear through holes 73 and 77 and back and forth in the circumferential direction.
  • For inserting and supporting support pins 80 as support shafts that penetrate the three planetary gears 65 are respectively inserted from the rear of the rear carrier plate 76 at positions between the through holes 73 and 77. Drill.
  • the support hole 81 is processed after joining the front spindle 66 and the rear spindle 67, the accuracy of the support hole 81 can be ensured.
  • the support pin 80 is inserted from the rear of the rear carrier plate 69 to the rear support hole 81, the planetary gear 65, the front side. If the support holes 81 are passed through in this order, the spindle 63 in which the planetary gear 65 is supported by the carrier portion 64 in a both-sided state is obtained.
  • the spindle 63 is pivotally supported by a bearing 82 held at the rear end of the rear spindle 67 by the gear housing 12, and the planetary gear 65 meshes with an internal gear 83 held by the gear housing 12 in front of the spindle 63.
  • the insertion part 70 of a front end is coaxially inserted in the insertion hole 84 provided in the axial center of the anvil 4, and is supported so that it can rotate coaxially with the rotating shaft 52.
  • the pinion 58 of the rotating shaft 52 is inserted into the bottomed hole 71 from behind and meshes with each planetary gear 65 at the center of the three planetary gears 65.
  • the striking mechanism 10 includes a hammer 85 mounted on the front portion of the spindle 63, balls 86 and 86 provided between the hammer 85 and the spindle 63, and a coil spring 87 that biases the hammer 85 forward.
  • the hammer 85 has a pair of claws (not shown) on the front surface, and can be engaged with a pair of arms 88 and 88 provided at the rear end of the anvil 4 in the rotational direction.
  • a pair of protruding chevron grooves 89 and 89 are formed, and a ring groove 90 is formed coaxially on the rear surface.
  • the balls 86 and 86 are fitted over the cam groove 72 of the spindle 63 and the chevron groove 89 of the hammer 85 to integrate the spindle 63 and the hammer 85 in the rotational direction. Relative rotation and back-and-forth movement of the hammer 85 are allowed in the rolling range of the ball 86 with respect to.
  • the coil spring 87 is externally mounted on the spindle 63 so that the front end is inserted into the ring groove 90 of the hammer 85, while the rear end is brought into contact with the front surface of the rear carrier plate 69 outside the stepped portion 75. The ball 86 is urged to the forward movement position of FIGS.
  • 91 and 92 are balls and washers which are provided at the bottom of the ring groove 90 and receive the front end of the coil spring 87.
  • the anvil 4 is pivotally supported coaxially with the spindle 63 by a bearing metal 94 held by a bearing portion 93 provided at the front end of the hammer case 9, and a regulating ring 95 provided between the bearing portion 93 and the arms 88, 88. Is positioned forward.
  • a grease reservoir 96 extending forward to the inside of the bearing metal 94 is extended in the insertion hole 84 into which the insertion portion 70 of the spindle 63 is inserted, and a ring groove 97 provided on the outer periphery of the grease reservoir 96 and the anvil 4. Is connected to the ring groove 97 through the communication hole 98 so that the bearing metal 94 and the anvil 4 are lubricated.
  • a seal ring 99 is provided between the bearing portion 93 and the anvil 4 in front of the bearing metal 94, and a socket 100 can be attached to and detached from the front end of the anvil 4.
  • the microcomputer of the control circuit board 17 obtains the rotation detection signal indicating the position of the permanent magnet 54 of the rotor 26 output from the rotation detection element of the sensor circuit board 31, acquires the rotation state of the rotor 26, and acquires the obtained rotation.
  • the ON / OFF of each switching element is controlled according to the state, and the rotor 26 is rotated by causing a current to flow sequentially to each coil 30 of the stator 25.
  • the rotating rotor 26 is provided with a front stopper 61 and a rear stopper 62 on the front and rear, the movement of each permanent magnet 54 in the front-rear direction is restricted, and it is prevented from coming out of the through hole 55 of the rotor core 53. Is done. Therefore, there is no possibility that the permanent magnet 54 will fall off, and the highly reliable brushless motor 8 can be used.
  • the spindle 63 is divided into three parts (front and rear) in the axial direction with the housing space for the planetary gear 65 in the carrier portion 64 as a boundary. It is divided into a spindle 66, a rear spindle 67, and a joining pin 68), and each part is joined and formed, so that even the spindle 63 having the carrier portion 64 can be easily processed. Cost increase can be suppressed.
  • the spindle 63 is divided into three parts, that is, a front spindle 66, a rear spindle 67, and a joining pin 68, so that a form of parts that can be easily processed is obtained.
  • the front spindle 66 and the rear spindle 67 and the joining pin 68 are joined by brazing, but they may be joined by press-fitting the joining pin 68.
  • FIGS. 8 and 9 show an example.
  • the front spindle 66A is not provided with a circular recess for brazing on the rear surface of the front carrier plate 69 as in the previous embodiment, and only the front through hole 73 is provided. Is provided.
  • the small diameter portion 79 on the front side of the joining pin 68 is press-fitted into the front through hole 73, while the small diameter portion 79 on the rear side is pressed into the rear through hole 77 of the rear carrier plate 76 of the rear spindle 67 to join.
  • the joining is performed by press-fitting in this way, the processing step of the circular concave portion and the brazing step in the front spindle 66A become unnecessary, and further cost reduction can be expected.
  • the rear carrier plate 76 has the same structure as that of the previous embodiment, and both the case of brazing and the case of press-fitting are possible. However, if only the press-fitting is performed, the taper portion 78 of the rear through-hole 77 is eliminated. This makes it possible to further reduce processing steps.
  • the spindle is divided into three parts: a front spindle, a rear spindle, and a joining pin.
  • the joining pin is integrally formed on one of the front spindle and the rear spindle to form two parts (two parts).
  • the spindle can be assembled by joining the joining pin to the other side by brazing or press fitting.
  • the joining pin is divided into front and rear, the front part of the joining pin is formed integrally with the front spindle, and the rear part of the joining pin is formed integrally with the rear spindle to be divided into two parts (two parts). It is also possible to assemble the spindle by joining the rear part by brazing or press fitting.
  • the joining member is not limited to a shaft body such as a joining pin, and a wall body or the like may be employed.
  • the support hole is not limited to processing after assembling of each component, but may be processed at the time of manufacturing each component depending on the division form.
  • the joining pin which joins a front spindle and a rear spindle, and the support pin of a planetary gear are separated, the joining pin is eliminated and the support shaft of a planetary gear is made into the joining member of a front spindle and a rear spindle.
  • the number of planetary gears is not limited to three, and two planetary gears may be used. However, a carrier unit having three or more planetary gears is more effective in reducing costs.
  • an impact tool in which the motor is not brushless, an impact tool using an AC power source, or the like may be used.
  • the impact tool is not limited to a wrench, and a spindle that integrally has a carrier portion that supports both ends of a planetary gear support shaft is used. If it is a thing, even if it is an angle impact wrench which provided the anvil at right angle with respect to the spindle, an impact driver, etc., this invention is employable.
  • the present invention can also be applied to electric tools (for example, a driver drill, a shear wrench, etc.) using other planetary gears.
  • Planetary gear 66 ⁇ Front spindle, 67 ⁇ ⁇ Rear spindle, 68 ⁇ ⁇ Joint pin, 69 ⁇ ⁇ Front carrier plate, 73 ⁇ ⁇ Front through hole, 74 ⁇ ⁇ Circular recess, ⁇ ⁇ ⁇ Rear carrier plate, ⁇ -Rear through hole, 78-Tapered part, 79-Small diameter part, 80-Support pin, 81-Support hole, 85-Hammer, 86-Ball, 87-Coil spring, 100-Socket

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Power Tools In General (AREA)
  • Manufacture Of Motors, Generators (AREA)
PCT/JP2015/082728 2014-11-25 2015-11-20 インパクト工具及びインパクト工具用スピンドルの製造方法 WO2016084742A1 (ja)

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Application Number Priority Date Filing Date Title
CN201580059102.3A CN107107316A (zh) 2014-11-25 2015-11-20 冲击工具以及冲击工具用主轴的制造方法

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JP2014-237983 2014-11-25
JP2014237983A JP2016097487A (ja) 2014-11-25 2014-11-25 インパクト工具及びインパクト工具用スピンドルの製造方法

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JP6832509B2 (ja) * 2017-03-27 2021-02-24 パナソニックＩｐマネジメント株式会社 回転打撃工具
KR102007388B1 (ko) * 2017-11-29 2019-08-06 계양전기 주식회사 홀더 링이 적용된 전동 공구
US11027404B2 (en) 2018-07-19 2021-06-08 Milwaukee Electric Tool Corporation Lubricant-impregnated bushing for impact tool
JP7297448B2 (ja) * 2019-01-09 2023-06-26 株式会社マキタ 電動工具
CN110682243B (zh) * 2019-10-12 2021-03-19 淮阴工学院 自适应万能套筒扳手
JP7459535B2 (ja) * 2020-02-04 2024-04-02 マックス株式会社 電動工具

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JPH11254339A (ja) * 1998-03-04 1999-09-21 Chubu Electric Power Co Inc 充電式回転工具の構造
US6401572B1 (en) * 2001-06-29 2002-06-11 Dan Provost Torque tool
JP2003222203A (ja) * 2002-01-28 2003-08-08 Matsushita Electric Works Ltd 減速機及びその減速機の製造方法
JP2011251355A (ja) * 2010-05-31 2011-12-15 Hitachi Koki Co Ltd 電動工具
JP2014140931A (ja) * 2013-01-24 2014-08-07 Hitachi Koki Co Ltd 電動工具

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JP5126347B2 (ja) * 2009-11-30 2013-01-23 マックス株式会社 回転工具

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Publication number Priority date Publication date Assignee Title
JPH11254339A (ja) * 1998-03-04 1999-09-21 Chubu Electric Power Co Inc 充電式回転工具の構造
US6401572B1 (en) * 2001-06-29 2002-06-11 Dan Provost Torque tool
JP2003222203A (ja) * 2002-01-28 2003-08-08 Matsushita Electric Works Ltd 減速機及びその減速機の製造方法
JP2011251355A (ja) * 2010-05-31 2011-12-15 Hitachi Koki Co Ltd 電動工具
JP2014140931A (ja) * 2013-01-24 2014-08-07 Hitachi Koki Co Ltd 電動工具

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