WO2020175006A1 - Engin de chantier électrique et procédé de formation d'un carter associé - Google Patents

Engin de chantier électrique et procédé de formation d'un carter associé Download PDF

Info

Publication number
WO2020175006A1
WO2020175006A1 PCT/JP2020/003662 JP2020003662W WO2020175006A1 WO 2020175006 A1 WO2020175006 A1 WO 2020175006A1 JP 2020003662 W JP2020003662 W JP 2020003662W WO 2020175006 A1 WO2020175006 A1 WO 2020175006A1
Authority
WO
WIPO (PCT)
Prior art keywords
rib
housing
ribs
working machine
electric working
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.)
Ceased
Application number
PCT/JP2020/003662
Other languages
English (en)
Japanese (ja)
Inventor
康平 脇田
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.)
Koki Holdings Co Ltd
Original Assignee
Koki Holdings Co Ltd
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 Koki Holdings Co Ltd filed Critical Koki Holdings Co Ltd
Publication of WO2020175006A1 publication Critical patent/WO2020175006A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • 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

Definitions

  • the present invention relates to an electric working machine in which a motor is built in a housing and a method for molding the housing.
  • the housing is provided with a vent hole serving as a wind window for cooling the motor. It was desired to prevent foreign matter such as dust and water droplets from entering through the mouth.
  • the housing of the electric working machine has a structure in which the housing is divided into two parts on the left and right sides, the direction of extraction of the cavity part of the divided molding die and the core part fitted therein is opposite to each other. Therefore, in the case of providing a rib on the vent hole in consideration of dustproofness, by arranging the rib almost perpendicular to the extraction direction of the core part, the distance restricted by the draft angle is short and the desired vent shape was possible.
  • Fig. 14 (8) to (M) show the ventilation holes 2 of the housing 200 to enhance the dustproof property.
  • Ha (eight) A side cross-sectional view, (0) is a cross-sectional view taken along line XX of (8), and (M) is an explanatory view showing the appearance of the housing 200.
  • the ventilation hole 20 1 is provided on the side surface of the housing 200 0 that has a cylindrical shape and houses the motor, but the outer ribs 20 2 provided on the ventilation hole 20 1
  • the inner ribs 203 are formed in parallel with the axial direction of the tubular portion 203 of the housing 200.
  • a molding die 300 having a core portion 300 that can be fitted into the outer casing 202, and an outer rib 202 provided in the ventilation hole 201 of the housing 200 and an arrangement that does not overlap the outer rib 202. It is considered to mold the inner ribs 203 of the at one time.
  • the first cavity portion 301 and the second cavity portion 302 are reciprocally movable in the vertical direction, and the core portion 303 is reciprocally movable in the X direction orthogonal to the vertical direction, and the three members are joined.
  • the molding space of the housing 200 is filled with resin for molding (eg injection molding).
  • the outer ribs 20 2 provided on the air vents 20 1 have the first and second cavity portions 3 0 1, on both sides of the outer rib 20 2 on the side surface of the housing. 3 0 2 convex part It is performed by forming slit-shaped openings 205 by means of 302.
  • the inner side ribs 203 provided in the ventilation hole 201 are formed by providing the core portion 303 with a recessed portion 303 which becomes the inner rib 203 inside the side surface of the housing 200. ..
  • the second cavity portion 30 2 are separated from each other by moving the core portion 30 3 in the pull-out direction of the X direction orthogonal to the vertical direction.
  • the die is moved by moving 3 02 in the direction of the bird's eye so that they are separated from each other.
  • the width dimension of the outer rib 202 that is orthogonal to the X direction and the vertical direction is determined by the draft angle so that the outer diameter of the tubular shape of the housing 200 is outside the radial direction. It is getting smaller toward the side.
  • the core portion 303 is arranged in the longitudinal direction of the inner ribs 203. ⁇ 2020/175006 3 ⁇ (:171? 2020 /003662
  • each slit-shaped opening 205 that is the outer opening of the ventilation hole 201 corresponds to the width of the inner rib 203, as shown in Fig. 14 (o).
  • the opening width is large, and the opening width becomes smaller in the pulling direction of the core portion 303.
  • Patent Document 1 Japanese Patent Laid-Open No. 2 0 1 8 _ 1 8 7 7 0 1
  • each rib is viewed in the side view of the housing having the tubular shape of the electric working machine. Becomes a slender trapezoidal shape, the width dimension of the slit-shaped opening on the outer surface of the housing becomes large and it becomes impossible to suppress the intrusion of foreign matter, or if the width dimension of the slit-shaped opening is reduced, There was a risk that the ribs would become thin and the strength would decrease.
  • a first aspect of the present invention is an electric working machine.
  • the electric working machine has a motor and a single tubular shape, and a housing for housing the motor therein, a ventilation hole provided on a predetermined outer surface of the housing for communicating the inside and outside of the housing, and the ventilation.
  • a plurality of ribs provided in the mouth wherein the plurality of ribs include a first rib and a second rib that are different in position in a penetrating direction penetrating the inside and the outside of the housing, and the first rib and The second rib is integrally molded so as to have a portion that does not overlap with the predetermined outer surface when viewed in the penetrating direction.
  • the ventilation port is provided on a side surface of the housing, communicates with the inside and outside of the housing along a radial direction of the tubular shape as the penetration direction, and the first rib and the second rib. It is preferable that the ribs have different positions in the radial direction and do not overlap in the radial direction.
  • the longitudinal direction of the second rib may be non-parallel to the axial direction and the radial direction of the tubular shape.
  • the position of the second rib in the penetrating direction is arranged inside the first rib, and the width of the second rib in the penetrating direction viewed on the predetermined outer surface is the penetrating direction. It is said that the side surface along the longitudinal direction of the second rib is formed so as to be inclined with respect to the penetrating direction so as to become smaller toward the inside.
  • the second rib has a widthwise dimension of the predetermined outer surface as viewed in the penetrating direction that is substantially constant in the longitudinal direction.
  • a plurality of the first ribs and a plurality of the second ribs are preferably provided.
  • a second aspect of the present invention is a method for molding a housing of an electric working machine.
  • the method of molding the housing of the electric working machine is such that the first and second cavities that can be brought into contact with and separated from each other and the core that can be fitted into the first and second cavities in the joined state are electrically driven.
  • the housing formed by filling the molding space with resin has an integral cylindrical shape and is provided on a predetermined outer surface to communicate the inside and outside of the housing.
  • the second rib is arranged at a position in the penetrating direction on the inner side of the /ribs from the first rib, and the longitudinal direction of the second rib is the first rib. It is not parallel to the contacting/separating direction of the first and second cavity portions and the fitting direction of the core portion.
  • Fig. 1 is a schematic first embodiment of a method for molding an electric working machine and a housing thereof according to the present invention, wherein (8) is a plane cross section showing a housing and a molding die having an integral tubular shape.
  • the housing is a cross-sectional view of (Mimi) 8_8 ⁇ , (Mimi) is a side view of the ventilation port provided in the housing as seen from the outside of the housing, and ( ⁇ ) is ( 8) No. 1 _ No. 1 side cross-section, (0) No. (8) No. 2 _ No. 2 side cross-section, (No.) is (8) No. 10 cross-section, () is the appearance of the housing Explanatory drawing to show.
  • FIG. 2 is a side sectional view of a hammer drill as an electric working machine according to the second embodiment of the present invention.
  • FIG. 3 An enlarged side view of a main part having a ventilation hole of a housing in the second embodiment.
  • FIG. 4 A main part of the second embodiment, wherein (8) is a half cross-sectional view of FIG. 3 and is a half cross-sectional view showing a molding die together.
  • FIG. 5 A main part of the second embodiment, wherein (8) is a 8 2 — 8 2 half cross-sectional view of FIG. 3, and (M) is a 2 — 2 half cross-sectional view showing a molding die together. ⁇ 2020/175006 6 ⁇ (:171? 2020/003662 Perspective view.
  • FIG. 7 A main part of the second embodiment, in which (8) is a sectional view taken along the side of 1-Minami 1 of FIG. 4 (8), and (Mi) is a drawing of FIG. 1 _ Sumi 1 side sectional view.
  • FIG. 8 A main part of the second embodiment, in which (8) is a sectional view taken along the line 2-2 in FIG. 4(8), and (()) is also shown in FIG. 2 _ Sumi 2 side sectional view.
  • FIG. 9 A main part of the second embodiment, wherein (8) is a cross section taken along the line 10 (10) in FIG. 3, and (M) is a cross section taken along line (3 — 0) in FIG.
  • FIG. 10 is a left side view showing a third embodiment of the present invention, in which a portion including a handle portion of a housing having an integral tubular shape is divided into two parts.
  • Fig. 11 is an exploded perspective view from the left showing a configuration in which the portion including the handle portion of the cylindrical housing is divided into two.
  • FIG. 12 is a right side view of the third embodiment, showing a configuration in which a portion including a handle portion of a cylindrical housing is divided into two.
  • FIG. 13 An exploded perspective view from the right showing a structure in which a portion including a handle portion of a housing having the same tubular shape is divided into two.
  • FIG. 14 A schematic comparative example of a method for molding an electric working machine and its housing, wherein (8) is a horizontal cross-sectional view showing the housing and the molding die, and the housing is a (8)-8 cross-sectional view of (Mimi).
  • ⁇ (M) is a side view of the ventilation port provided in the cylindrical housing as seen from the outside of the housing as viewed from the radial direction
  • ( ⁇ ) is a cross-sectional view of the (M) side of (8)
  • (0) is ( (8) Cross-sectional view along line XX
  • (M) is an explanatory view showing the appearance of the housing.
  • Figs. 1 () to () are molding of an electric working machine and a housing thereof according to the present invention. ⁇ 2020/175006 7 ⁇ (:171? 2020/003662
  • the dust-proof is provided on the side surface of the housing 10 of the electric operating machine that has the cylindrical portion 103 that has the shape of a cylindrical body and that houses the motor inside the cylindrical portion 103.
  • an outer rib 12 as a first rib and an inner rib 13 as a second rib are provided to provide a ventilation port 11 having a so-called laplin structure.
  • the vent 11 communicates with the inside and outside of the housing, and functions as a wind window for intake or exhaust of air that cools the motor inside the tubular portion 103.
  • the outer ribs 12 and the inner ribs 13 provided in the vent hole 11 have a penetrating direction that penetrates the inside and the outside of the housing 10 (specifically, the cylindrical portion 10). (3 radial direction), the inner rib 13 is arranged inside the outer rib 12 so that the outer rib 1 2 and the inner rib 1 3 do not overlap each other when viewed in the radial direction. ..
  • the outer ribs 12 and the inner ribs 13 are inclined with respect to the axial direction of the tubular portion 103 of the housing 10 (parallel to the X direction which is the moving direction of the core portion 10 3 described later). Are formed (non-parallel).
  • the first and second cavity parts 10 1, 10 2 which can be contacted and separated from each other, and the first and second cavity parts 10 1, which are in a joined state.
  • the molding die 100 having the core portion 10 3 which can be fitted into the concave portion formed by 10 2, the outer ribs 12 and the tubular portion 10 provided in the vent hole 11 of the housing 10 are used.
  • the inner rib 13 which is arranged so as not to overlap the outer rib 12 when viewed in the penetration direction of 3 (specifically, in the radial direction) is molded at one time.
  • the first cavity portion 10 1 and the second cavity portion 10 2 are capable of reciprocating movement in the vertical direction
  • the core portion 10 3 is capable of reciprocating in the X direction orthogonal to the vertical direction
  • the three members are joined.
  • fill the molding space of the housing 10 with resin and mold (for example, injection molding).
  • the outer ribs 12 provided on the ventilation holes 11 are, as shown in Fig. 1 (Mimi), located on the sides of the housing on both sides of the outer ribs 1 2 on both sides of the first and second cavity portions 1 0 1, 1 0 2 Convex part of This is done by forming a rectangular slit-shaped opening 15 shown in Figs. 1 (M) and () by 10 2 3.
  • the inner ribs 13 provided on the vent 11 are located inside the side surface of the housing 10 (cylindrical portion). ⁇ 2020/175006 8 ⁇ (:171? 2020/003662
  • the core 1033 is provided with a recess 1033 that will become the inner rib 13.
  • the outer ribs 12 and the inner ribs 13 are arranged so that they do not necessarily overlap with each other when viewed in the radial direction of the tubular portion 103. Also inside ribs
  • the first and second cavity parts 10 1 and 10 2 are moved in a direction in which they are separated from each other in the upward direction, and die-cutting is performed.
  • the width dimension of the outer ribs 12 that are orthogonal to the X direction and the ridge direction is set so as to face the outer radial direction of the cylindrical shape of the housing 10 due to the draft. It has become smaller (substantially the same as the comparative example in Fig. 14).
  • the core portion 103 is moved in the cutting direction in the X direction inclined with respect to the longitudinal direction of the inner ribs 13 to perform die cutting.
  • the inner rib 13 is provided with a draft for smooth die cutting, but the reference surface 1 3 3 for drafting is the surface exposed to the outside of the housing of the inner rib 13 and the reference surface With 1 3 3 as the starting point of the draft, apply the required draft to the side surface 1 3 of the inner rib 1 3 along the longitudinal direction of the reference plane 1 3 3 .
  • the longitudinal direction of the inner rib 13 is as shown in Fig.
  • Fig. 1 ( ⁇ ) and (0) As shown in Fig. 1 (Mimi), the width dimension of the inner rib 13 perpendicular to the X and direction is smaller toward the inner side in the radial direction of the tubular shape. As a result, the side surface 1 3 along the longitudinal direction of the reference surface 1 3 3 of the inner rib 13 is formed as an inclined surface. Therefore, when the inner rib 13 is viewed from the radial direction of the cylinder, it is shown in Fig. 1 ( ⁇ ), ⁇ 2020/175006 9 ⁇ (:171? 2020/003662
  • the widthwise dimension of the outer surface (reference surface 1 3 3) of the inner rib 13 which is orthogonal to the X direction and the vertical direction is constant (or substantially constant) along the longitudinal direction of the inner rib 13. It is possible to In other words, the width of the inner rib 13 seen from each slit-shaped opening 15 that is the outer opening of the ventilation hole 11 can be made constant (or approximately constant), as shown in Fig. 1 (Mitsumi) and (). In addition, each slit-shaped opening 15 can be made into an elongated rectangle in consideration of dust resistance.
  • the plurality of ribs include an outer rib 12 and an inner rib 13 which penetrate the inside and the outside of the housing and have different positions in the penetration direction, and the outer rib 1 2
  • the inner rib 13 and the inner rib 13 have a labyrinth structure integrally formed so that they do not overlap with each other on the predetermined outer surface when viewed in the penetration direction.
  • the outer rib 1 2 and the inner rib 13 are arranged so as not to overlap with each other when viewed in the penetrating direction, as shown in Fig. 1 (Mimi), the first or second cavity portion 1 0 1, 1 0 2 and the core portion
  • the outer ribs 12 and the inner ribs 13 can be integrally formed by alternately projecting 10 3 and 10 3 in the penetrating direction.
  • the width of the inner rib 13 as viewed in the radial direction (X, the width dimension in the direction orthogonal to the vertical direction) can be made substantially constant.
  • the slit-shaped openings 15 on both sides of the outer ribs 12 should be ⁇ 2020/175006 10 ⁇ (:171? 2020/003662
  • a rectangle with a width slightly larger than the width can be used to improve dust resistance.
  • the molding die 100 for molding the housing 10 is composed of the first and second cavity parts 1 0 1 and 10 2 and the first and second cavity parts 1 0 in the joined state.
  • This is a structure having a core portion 10 3 which can be fitted into 1 and 10 2, and does not require a special structure.
  • the longitudinal direction of the inner rib 13 is set to be non-parallel to the contact and separation direction of the first and second cavity parts 10 1 and 10 2 and the fitting direction of the core part 10 3, It is no longer necessary to provide a draft in the longitudinal direction of the inner rib 13.
  • the width of the inner rib 13 in the radial direction can be made substantially constant.
  • the hammer drill 1 applies a rotating force and a striking force to a tip tool (not shown) held by the tool holding unit 3 to perform scraping work, drilling work, and scraping work on work materials such as concrete and stone. Crushing work can be performed.
  • the outer shell of the hammer drill 1 is composed of a housing 10 and a gear case 30.
  • the housing 10 is a resin molded body.
  • the gear case 30 is made of metal such as aluminum.
  • a side handle 3 1 is provided on the gear case 30.
  • the housing 10 has a tubular portion 103 having an integral tubular shape that serves as a motor housing portion for housing the motor 2 and the like, and a handle portion 10 for gripping by an operator.
  • a trigger switch 5 is provided on the upper end of the handle 10 to allow the operator to instruct the motor 2 to drive or stop.
  • the gear case 30 accommodates a power transmission mechanism 4 that transmits the rotation of the motor 2 and drives (rotates and strikes) the tip tool held by the tool holder 3. Since the structure of the power transmission mechanism 4 is well known, its details are omitted.
  • FIG. 3 is a main part of the second embodiment.
  • the vent 11 is a cylinder that is a part for housing the motor 2. ⁇ 2020/175006 1 1 ⁇ (:171? 2020/003662
  • a plurality of slit-shaped openings 15 each having a substantially rectangular shape (having a substantially constant width), which are arranged closer to the handle portion 1013 than the shape portion 103, the outer ribs 12 formed between them, and the tube.
  • the shape portion 103 has an inner rib 13 located inside the outer rib 12 in the radial direction. Further, the outer ribs 12 and the inner ribs 13 do not overlap each other when viewed in the radial direction, and the inner ribs 13 are visible from the slit-shaped openings 15. As a result, the vent 11 has a labyrinth structure.
  • Fig. 4 (eight) is a 8 1 -8 1 half cross-sectional view of Fig. 3, (m) is an 8 1 _ 8 1 half cross-sectional view showing the molding die together, and Fig. 5 (eight) is the eight 1- 2-8 2 and a half sectional view, (M) shows 8 2 _ 8 2 and a half sectional view together with the molding die It is a perspective view.
  • the inner ribs As you can see from these figures, the inner ribs
  • a gap 16 is formed between the outer rib 12 and the inner rib 13 located radially inward of the outer rib 12 as an air passage communicating with the slit-shaped opening 15.
  • Fig. 7 is a sectional view taken along the line 1-Min 1 of Fig. 4 (eight)
  • (Min) is a sectional view showing the forming die together, and is shown in Fig. 4 (8).
  • Fig. 8 is a sectional view taken along the side of Min 2__Min 2 in Fig. 4(8)
  • (Min) is a sectional view showing the forming mold together with Fig. 4() It is a half cross-sectional view, and each inner rib 13 is formed with a draft in a drawing direction of a core part 103 which is parallel to an axial direction of the tubular part 103.
  • the operation and effect of the second embodiment is similar to that of the schematic first embodiment, and is a housing 10 having a tubular portion 10 3 forming an integral tubular shape like a hammer drill 1.
  • the labyrinth structure vent 11 with excellent dust resistance can be manufactured without using a special mold.
  • Figs. 10 to 13 show Embodiment 3 in which the present invention is applied to a hammer drill as an electric working machine, in which the outer shell portion of the hammer drill 1 is a tubular portion that forms an integral tubular shape.
  • the housing 10 has a structure in which a portion including the handle portion 10 is divided into two parts.
  • Fig. 10 is a left side view showing a structure in which the part of the housing 10 including the handle portion 10 is divided into two parts.
  • Fig. 11 is an exploded perspective view of the same from the left side.
  • Fig. 12 is a right side view of the same.
  • 13 is an exploded perspective view seen from the right side.
  • the housing 10 has a tubular portion that forms an integral tubular shape.
  • the outer ribs 12, inner ribs 13, slit-shaped openings 15 and the like provided in the vent hole 11 on one side (right side) of the housing 20 have the same configuration as in the second embodiment described above. It is molded at the same time with the same mold.
  • the other (left) vent 11 is formed on the side of the housing 20 and the outer rib 12 and the slit-shaped opening 15 formed on the housing 21 which is another molded body. It has a labyrinth structure in combination with the inner ribs 13.
  • one housing portion 20 integrally has a tubular portion 1033 for accommodating a motor and half of the handle portion 10 s, the strength of the handle 10 s Can be increased.
  • the hammer drill is exemplified as the electric working machine. ⁇ 2020/175006 13 ⁇ (:171? 2020/003662
  • housings that have an integral tubular shape, such as grinders, dust collectors, and mowers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

La présente invention empêche l'entrée de corps étrangers dans un carter tout en maintenant la durabilité autour d'un trou d'aération présent dans le carter. Un engin de chantier électrique est pourvu d'un carter (10) qui possède une forme cylindrique intégrée et comporte un moteur à l'intérieur du carter; d'un trou d'aération (11) qui est disposé dans une surface externe prédéterminée du carter et qui fait communiquer l'intérieur et l'extérieur du carter; et d'une pluralité de nervures disposées dans le trou d'aération (11). La pluralité de nervures comprend une nervure externe (12) et une nervure interne (13) à différents emplacements dans une direction de pénétration pénétrant à l'intérieur et à l'extérieur du carter. La nervure externe (12) et la nervure interne (13) sont disposées de façon à ne pas se chevaucher mutuellement dans la direction de pénétration lorsqu'elles sont vues depuis la surface externe prédéterminée.
PCT/JP2020/003662 2019-02-26 2020-01-31 Engin de chantier électrique et procédé de formation d'un carter associé Ceased WO2020175006A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-033348 2019-02-26
JP2019033348 2019-02-26

Publications (1)

Publication Number Publication Date
WO2020175006A1 true WO2020175006A1 (fr) 2020-09-03

Family

ID=72238515

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2020/003662 Ceased WO2020175006A1 (fr) 2019-02-26 2020-01-31 Engin de chantier électrique et procédé de formation d'un carter associé

Country Status (1)

Country Link
WO (1) WO2020175006A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0320489U (fr) * 1989-03-16 1991-02-28
JPH1133934A (ja) * 1997-07-25 1999-02-09 Ryobi Ltd 電動工具のハウジング
JP2008302467A (ja) * 2007-06-07 2008-12-18 Makita Corp 電動工具
JP2010105130A (ja) * 2008-10-30 2010-05-13 Makita Corp 電動工具の通気窓
CN202713036U (zh) * 2012-08-02 2013-01-30 无锡锐克电动工具有限公司 一种用于电锤的筒式电机壳体进风结构
JP2013039652A (ja) * 2011-08-19 2013-02-28 Hitachi Koki Co Ltd 電動工具
JP2018075685A (ja) * 2016-11-10 2018-05-17 株式会社マキタ 電動工具

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0320489U (fr) * 1989-03-16 1991-02-28
JPH1133934A (ja) * 1997-07-25 1999-02-09 Ryobi Ltd 電動工具のハウジング
JP2008302467A (ja) * 2007-06-07 2008-12-18 Makita Corp 電動工具
JP2010105130A (ja) * 2008-10-30 2010-05-13 Makita Corp 電動工具の通気窓
JP2013039652A (ja) * 2011-08-19 2013-02-28 Hitachi Koki Co Ltd 電動工具
CN202713036U (zh) * 2012-08-02 2013-01-30 无锡锐克电动工具有限公司 一种用于电锤的筒式电机壳体进风结构
JP2018075685A (ja) * 2016-11-10 2018-05-17 株式会社マキタ 電動工具

Similar Documents

Publication Publication Date Title
CN206373934U (zh) 固定刀片、刀片组及剪发器具
ES2602144T3 (es) Aparato de mecanización
CN1267249C (zh) 冲击工具
CN1649701A (zh) 剃须装置
JP4704467B2 (ja) カミソリ
CN104203127B (zh) 外科手术铣削器械
WO2020175006A1 (fr) Engin de chantier électrique et procédé de formation d'un carter associé
CN102528831A (zh) 旋转驱动剪发器的驱动系统
AU2003290277A1 (en) Hair clippers
US6925719B2 (en) Powered coping saw
CN103624326B (zh) 往复锯
JP6036320B2 (ja) 携帯型作業機
US20210053200A1 (en) Blade mounting device, chisel and blade thereof, carving cutter replaceable blade, and adapter for mounting carving cutter replaceable blade on blade mounting device
CN113993667B (zh) 电动作业机
JP2009202256A (ja) 穿孔工具
JP3639141B2 (ja) 彫刻深度調節ユニット
CN1136081C (zh) 电动理发推剪
KR20230171552A (ko) 수동형 콧털 제거기
CN113118549A (zh) 电圆锯
KR100883962B1 (ko) 전동식 헤어 커터
CN112055637A (zh) 具有带厚度轮廓的毛发引导元件的刮剃设备的外部切削部件
JPH06277113A (ja) 電動式爪整形器
CN211466485U (zh) 一种高频大行程电振动刀
JP4990172B2 (ja) 電気機器
CN103846499B (zh) 往复锯

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20762429

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20762429

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP