EP3533565B1 - Outil électrique - Google Patents

Outil électrique Download PDF

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Publication number
EP3533565B1
EP3533565B1 EP19157476.3A EP19157476A EP3533565B1 EP 3533565 B1 EP3533565 B1 EP 3533565B1 EP 19157476 A EP19157476 A EP 19157476A EP 3533565 B1 EP3533565 B1 EP 3533565B1
Authority
EP
European Patent Office
Prior art keywords
body portion
connectors
wirings
electric power
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
EP19157476.3A
Other languages
German (de)
English (en)
Other versions
EP3533565A2 (fr
EP3533565A3 (fr
Inventor
Terufumi Hamano
Hiroki Ishiguro
Yusuke Yoshida
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.)
Max Co Ltd
Original Assignee
Max 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
Priority claimed from JP2019004097A external-priority patent/JP7243199B2/ja
Application filed by Max Co Ltd filed Critical Max Co Ltd
Priority to EP22160728.6A priority Critical patent/EP4029656A1/fr
Publication of EP3533565A2 publication Critical patent/EP3533565A2/fr
Publication of EP3533565A3 publication Critical patent/EP3533565A3/fr
Application granted granted Critical
Publication of EP3533565B1 publication Critical patent/EP3533565B1/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
    • B25F5/02—Construction of casings, bodies or handles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B13/00—Bundling articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B13/00—Bundling articles
    • B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B13/00—Bundling articles
    • B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
    • B65B13/24—Securing ends of binding material
    • B65B13/28—Securing ends of binding material by twisting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B27/00—Bundling particular articles presenting special problems using string, wire, or narrow tape or band; Baling fibrous material, e.g. peat, not otherwise provided for
    • B65B27/10—Bundling rods, sticks, or like elongated objects

Definitions

  • the technology disclosed herein relates to an electric power tool.
  • Such electric power tools include, for example, a binding machine and the like (see JP 5217621 B2 ).
  • the binding machine is used to bind an object, such as reinforcing bars, at a construction site and the like.
  • the work can be reliably speeded up.
  • the binding machine will come into wide use in the future.
  • the female connectors are mounted in the receiving portion in a state in which they are already mounted in the main body of the power tool.
  • male and female connectors are snap-fitted on an outer circumference of a bracket on which the electric motor is already mounted and then this assembly of the electric motor, the mounting bracket, and the connectors fitted to each other are mounted in a casing or body portion of the power tool.
  • EP 2 929 986 A2 an encapsulation member and an additional cover are shown, to be mounted after the connectors have been connected to the PCB board.
  • Such electric power tools include, in a body portion thereof, a driving unit, such as a motor; various components, such as sensors or LEDs; a circuit board, on which a control unit is mounted; wirings and connectors for electrically connecting therebetween and the like.
  • a driving unit such as a motor
  • various components such as sensors or LEDs
  • a circuit board on which a control unit is mounted
  • wirings and connectors for electrically connecting therebetween and the like.
  • the connectors are often received in an empty space inside the body portion by pushing the connectors into the space due to routing of wirings.
  • assemblability or maintainability of the connectors or wirings to the body portion is not good. Accordingly, an object of the technology disclosed herein is mainly to solve the above problems.
  • the present invention provides an electric power tool according to claim 1.
  • the electric power tool comprises: a driving unit generating a driving force by electricity and various components functioning by electricity;
  • a plurality of connectors which would have been simply pushed into the empty space inside the body portion due to routing of wirings, can be received in the receiving portion and then fixed to the body portion. Therefore, it is possible to enhance assemblability or maintainability of connector portions.
  • FIGS. 1 to 13B are intended to describe the present embodiment.
  • FIG. 1 shows a binding machine 1 as an example of an electric power tool.
  • Arrows in the figure represent, respectively, a first direction 2 corresponding to a horizontal direction of the binding machine 1, a second direction 3 perpendicular to the first direction 2 and also corresponding to a vertical direction of the binding machine 1, and a third direction 4 perpendicular to the first direction 2 and the second direction 3 and also corresponding to a widthwise direction of the binding machine 1.
  • the binding machine 1 is an electric power tool intended to bind an object or a work piece, such as reinforcing bars 5, with a binding member, such as a wire 6.
  • the binding machine 1 includes a twisting unit 25 configured to twist a binding member, such as a wire 6, which is guided in a loop shape to wrap around an object, such as reinforcing bars 5, and thus to bind the object, such as reinforcing bars 5; a twist motor 27 for driving the twisting unit 25; a circuit board 32 having a mounting surface 32a, on which a control unit 40 (see FIG. 6 ) for controlling the twist motor 27 is mounted; a body portion 7 for housing the twisting unit 25, the twist motor 27 and the circuit board 32.
  • the body portion 7 has a generally hollow case extending in the first direction 2.
  • reinforcing bars 5 as the object and a wire 6 as the binding member will be described by way of example.
  • a side of the body portion 7 facing the reinforcing bars 5 is referred to a front side of the body portion 7, and the opposite side thereof is referred to as a rear side of the body portion 7.
  • a side of the body portion 7, on which the handle portion 8 is provided is referred to as a lower side of the body portion 7, and the opposite side thereof is referred to as a upper side of the body portion 7.
  • the body portion 7 can be oriented in various directions depending on a working posture of the binding machine 1 and thus the front/rear sides and the upper/lower sides are relative.
  • the third direction 4 is a direction corresponding to a left and right direction of a worker, who holds the binding machine 1, and is represented as a direction perpendicular to the paper surface of the figure (the far side is the right side and the near side is the left side).
  • the handle portion 8 is provided on the body portion 7 for the purpose of easily performing a work while holding the binding machine 1.
  • the handle portion 8 is attached on the body portion 7 at an angle slightly inclined toward the front side of the body portion 7 in the first direction 2.
  • the handle portion 8 is formed by a generally hollow member.
  • a portion (upper end portion) of the handle portion 8 facing the body portion 7 is referred to as a base portion or root portion of the handle portion 8, and the opposite portion thereof (lower end portion) is referred to as a distal end portion of the handle portion 8.
  • Electric components such as a trigger switch 9 as an activation switch, are provided on a front side of the root portion of the handle portion 8.
  • a battery 11 as a power supply is detachably attached on the distal end portion of the handle portion 8 via a battery attaching portion 12. Then, the binding machine 1 is activated by pulling the trigger switch 9 in a state where the binding machine 1 is turned on.
  • a load supporting portion 67 may be provided to be placed on the back of a worker's hand and thus to support a load.
  • a recessed portion 66 may be provided by scraping out the entire lower portion of the body portion 7 to allow the back of the hand gipping the handle portion 8 to be inserted therein.
  • a position of the middle finger when the handle portion 8 is gripped (a location in the vicinity of a lower end of the trigger switch 9) can be brought closer to the centroid position 68 of the binding machine 1 than before. Accordingly, a weight balance of the binding machine 1 can be improved and also operability of the binding machine 1 can be enhanced. Meanwhile, the centroid position 68 of the binding machine 1 is determined by a weight of the body portion 7 and a weight of the battery 11 and generally corresponds to the position as shown in FIG. 1 and the like.
  • the body portion 7 is provided, on a front end portion thereof, with curl guides 21, 22 configured to curl the wire 6 and then to guide the wire 6 in a loop shape around the reinforcing bars 5.
  • the wire 6 is guided by the curl guides 21, 22 in such a manner that the wire 6 is wrapped in one turn or a plurality of turns around the reinforcing bars 5.
  • the curl guides 21, 22 are provided in a pair while having a gap therebetween in the vertical direction (second direction 3) of the binding machine 1. Since the reinforcing bars 5 have to be inserted between the pair of curl guides 21, 22, an opening portion (insertion portion) 23 is provided therebetween.
  • the pair of curl guides 21, 22 are provided to have different lengths in such a manner that the upper side (curl guide 21) is longer and the lower side (curl guide 22) is shorter.
  • the upper curl guide 21 is fixed (fixed curl guide).
  • the lower curl guide 22 may be fixed or movable (movable curl guide).
  • the lower curl guide 22 is attached on the body portion 7 to be pivotable in the second direction, i.e., in the vertical direction, about a curl guide shaft 24 extending in the third direction 4.
  • the body portion 7 is provided with the twisting unit 25 configured to perform binding by twisting the loop-shaped wire 6 wound around the reinforcing bars 5 to reduce a diameter of the loop.
  • the twisting unit 25 is formed in a generally shaft shape extending in the first direction 2.
  • the twisting unit 25 is connected to an output shaft of the twist motor 27, which protrudes from one end side thereof, via a speed reduction mechanism 26. Then, the twisting unit 25 is operated by rotationally driving the twist motor 27.
  • the circuit board case 33 is fixed to a side surface of the body portion 7 (a first body portion 54 as described below) by fixing portions 56.
  • the binding machine 1 is installed with a setting unit 35 capable of setting operation conditions of the binding machine 1, specifically operation conditions of various driving portions, such as the feeding motor 18a, the twist motor 27 and the solenoid 17.
  • the setting unit 35 is configured to set the number of turns of the wire 6 wound around the reinforcing bars 5, an operation time of the feeding motor 18a, an operation timing of the solenoid 17, an amount of torque of the twist motor 27 and the like.
  • the setting unit 35 is mounted on a switch board 37, together with electric components, such as a main power switch or main switch 36 for turning on and off the power supply.
  • various driving portions such as the feeding motor 18a, the twist motor 27 and the solenoid 17; various circuit boards, such as the circuit board 32 (main board), the switch board 37 and the sub-board; and a battery 11 (a battery board provided inside the battery), which are installed in the binding machine 1, are connected to each other by various wirings.
  • the various wirings include, for example, power supply wirings 38, signal wirings 39 and the like.
  • the wirings, such as power supply wirings 38 and signal wirings 39, are arranged inside the body portion 7.
  • the electric power tool of the present embodiment includes a driving unit generating a driving force by electricity and various components functioning by electricity; a circuit board 32, on which a control unit 40 for controlling the driving unit and the various components is mounted; a plurality of connectors 71a to 71c (see FIGS. 2A to 2C ) for connecting a plurality of wirings 72a to 72c (see FIGS. 2A to 2C ), which extend from the driving unit and the various components, with a plurality of wirings 72a to 72c, which extend from the circuit board 32; a body portion 7 installed therein with the driving unit, the various components, the circuit board 32 (see FIG. 6 ) and the plurality of connectors 71a to 71c; and a receiving portion 46 configured to receive the plurality of connectors 71a to 71c therein and to be fixed to the body portion 7.
  • the electric power tool is not limited to the binding machine 1 as described above, but the structure of the present embodiment can be appropriately applied to the binding machine 1.
  • the body portion 7 is configured to be dividable into a first body portion 54 and a second body portion 55 in the widthwise direction (third direction 4 or left and right direction) (see FIG. 5 ).
  • the driving unit is the solenoid 17 of the brake unit, the feeing motor 18a of the wire feeding unit 18, the twist motor 27 for driving the twisting unit 25 or the like, in particular the twisting motor 27.
  • the components includes the sensor of the reel detection unit, the trigger switch 9, the setting unit 35, the main switch 36, a light source, such as a LED, for indicating an on/off state of the main switch 36, or the like.
  • the connectors 71a to 71c are provided singularly or in plural on an end portion or a middle portion of wirings 72a to 72c constituting the power supply wirings 38 , the signal wirings 39 or the like.
  • the connectors 71a to 71c may be individual connectors capable of individually connecting wirings one by one, but in the present embodiment, are configured as a collective connector capable of collectively connecting a plurality of wirings 72a to 72c at once.
  • a plurality of connectors 71a to 71c can be separately provided for each number of wirings 72a to 72c, for each thickness of wirings, for each component (or board) to be connected, or the like.
  • a first connector 71a is provided to be capable of connecting five first wirings 72a having the thinnest thickness at once.
  • a second connector 71b is provided to be capable of connecting four second wirings 72b having a medium thickness (thicker than the first wirings 72a but thinner than third wirings 72c) at once.
  • a third connector 71c is provided to be capable of connecting two third wirings 72c having the thickest thickness in the figures at once.
  • the number of connectors 71a to 71c is not limited to three.
  • the connectors 71a to 71c in the figures are shown in a state where male connectors and female connectors are connected to each other.
  • the receiving portion 46 is configured in the shape of a box capable of receiving a plurality of connectors 71a to 71c.
  • the receiving portion 46 is at least constituted of a container portion 75 having an opening portion in one surface thereof, and a lid portion 76 for closing the opening portion of the container portion 75.
  • the lid portion 76 is capable of closing or opening the container portion 75 in the widthwise direction (third direction 4) of the body portion 7.
  • the container portion 75 and the lid portion 76 are fixed to each other by claws or screws.
  • the receiving portion 46 is fixed to the body portion 7 in the widthwise direction by fixtures 77 such as screws (see FIG. 1 ), while the receiving portion 46 is received inside the body portion 7.
  • a wiring restriction portion 78 may be provided on the receiving portion 46.
  • the wiring restriction portion 78 can be configured as a wiring arranging arm protruding from the lower attaching piece 75b of the container portion 75 downward (toward the circuit board case 33 below thereof).
  • the wiring restriction portion 78 is intended to restrict wirings (e.g., power supply wirings 38 in FIG. 5 ), which extend from lower to upper side by passing outside the receiving portion 46 after emerging, for example, from the circuit board 32, the circuit board case 33 and the like, and thus to arrange a flow or direction of the wirings.
  • the receiving portion 46 may be formed of an opaque member, but the receiving portion 46 may be entirely or partially formed of a transparent member or translucent member.
  • a received state of the connectors 71a to 71c in the receiving portion 46 can be visually identified. Therefore, it is possible to find and prevent defects, such as biting of the connectors 71a to 71c by the receiving portion 46 or poor connection of the connectors 71a to 71c.
  • the receiving portion 46 is arranged in the rear of the driving unit, i.e., the receiving portion 46 is arranged on the opposite side to the output shaft of the twist motor 27.
  • the twisting unit 25 is installed at a location inside the body portion 7, which is located in front of the twist motor 27, via the speed reduction mechanism 26, and a rear space 42 is formed in the rear of the twist motor 27.
  • the receiving portion 46 is installed in the rear space 42.
  • the circuit board 32 is arranged to be close to the twist motor 27. In the binding machine 1, the circuit board 32 is the above main board.
  • the circuit board 32 is arranged upside down in such a manner that the mounting surface 32a (see FIG. 6 ) faces the handle portion 8 and the back surface (soldering surface) thereof faces the twist motor 27.
  • the circuit board 32 is arranged between the twist motor 27 and the handle portion 8 in such a manner that the circuit board 32 is closer to the twist motor 27 than the inner wall surface 34 (bottom wall) of the body portion 7, which is located toward the handle portion 8.
  • the circuit board 32 is arranged at a height substantially equal to or higher than that of the curl guide shaft 24.
  • a heat resistant member such as a heat resistant sheet 41 (see FIG. 1 ), may be interposed between the circuit board 32 and the twist motor 27 as required.
  • the heat resistant sheet 41 can be installed by attaching rubber or resin on an upper surface of the circuit board case 33.
  • the heat resistant member such as the heat resistant sheet 41
  • the heat resistant sheet 41 is formed of rubber, resin or the like, the effect thereof as a vibration-proof material can be anticipated.
  • the receiving portion 46 has a plurality of chambers 82a to 82c partitioned inside thereof.
  • the plurality of chambers 82a to 82c are partitioned by partitions 81a 81b and are configured to receive the plurality of connectors 71a to 71c.
  • one of the connectors 71a to 71c is received in each of the chambers 82a to 82c.
  • a plurality of (e.g., two) connectors 71a to 71c may be received in one chamber 82a to 82c (any one thereof).
  • the partitions 81a, 81b are provided generally along directions of the wirings 72a to 72c.
  • the receiving portion 46 is partitioned into three chambers arranged generally in the front and rear direction by two partitions 81a, 81b, which extend generally in the vertical direction (second direction 3).
  • all of the plurality of chambers 82a to 82c may have the same shape or at least two of the plurality of chambers 82a to 82c may have a different shape.
  • the chambers 82a to 82c may be configured not only such that all have different sizes, but also such that all have the same size or at least two sizes are employed.
  • the first connector 71a, the second connector 71b and the third connector 71c shown in FIG. 2A have different width dimensions and shapes in accordance with difference in the number or thickness of the wirings 72a to 72c to be connected.
  • the chambers 82a to 82c of the receiving portion 46 are also configured to have different depths or sizes depending on the connectors 71a to 71c.
  • slits 83a to 83c are provided to allow the wirings 72a to 72c to pass therethrough.
  • the slits 83a to 83c are also formed to have different depths or widths depending on the number or thickness of the wirings 72a to 72c.
  • the receiving portion 46 may be configured to have a width dimension based on the widest one of the connectors 71a to 71c.
  • step-shaped portions 84 may be provided on a side surface of the container portion 75 opposite to the opening portion, in accordance with difference in width dimension of the connectors 71a to 71c.
  • the step-shaped portions 84 may be provided on the lid portion 76.
  • the receiving portion 46 is fixed to be spaced from inner side walls 85, 86 of the body portion 7. Therefore, predetermined spaces (second receiving portions) 87, 88 are formed between the receiving portion 46 and the inner side walls 85, 86.
  • the inner side walls 85, 86 of the body portion 7 means inner walls of side surfaces of the body portion 7, which are oriented in the widthwise (right and left) direction (third direction 4), namely, inner walls of side surfaces of the body portion 7, which are located along a direction substantially perpendicular to an axial direction of the twist motor 27 and also substantially perpendicular to a longitudinal direction of the handle portion 8.
  • a predetermined space i.e., a widthwise gap (second receiving portion) 87, 88 is formed between the receiving portion 46 and the inner side walls 85, 86.
  • wirings power supply wirings 38, signal wirings 39 and the like
  • wirings can be arranged to pass through the space or the widthwise gap (second receiving portion) 87, 88.
  • connectors or wirings can be arranged to pass inside and outside the receiving portion 46, thereby making full use of the empty space in the body portion 7.
  • the wiring holding portion 91 is configured as a hook portion so that wirings (power supply wirings 38, signal wirings 39 and the like) extending generally in the vertical direction can be received and held therein.
  • the hook portion is configured such that a distal end thereof is bent toward the front side of the body portion 7, although a direction of the hook portion may be set to any direction. By bending the hook portion toward the front side, wirings received in the wiring holding portion 91 can be constrained not to protrude rearward, thereby preventing the wirings from being caught in the rear portion of the body portion 7.
  • One or a plurality of wiring holding portions 91 may be provided.
  • the wiring holding portion 91 may be provided on the first outer surface 79 or on both the first outer surface 79 and the second outer surface 80.
  • the first front-side wiring protection portion 95 is installed above the trigger switch 9 in such a manner that the female connectors 71g to 71i inside the body portion 7, which are attached to the connector connection portions 94a to 94c (see FIG. 7 ) installed between the twisting unit 25 and the trigger switch 9, or wirings extending from the female connectors 71g to 71i can be covered and protected therewith from the third direction 4 (from the left side).
  • the second rear-side wiring protection portion 96 is installed to generally extend along a lower edge portion of the rear portion of the body portion 7 in such a manner that inverted-from-downward-to-upward parts of wirings (power supply wirings 38 or the like), which emerge and extend downward from the rear portion of the circuit board (main board) 32 and then routed upward generally along the rear end portion of the body portion 7 (e.g., first body portion 54), are mainly protected (or pressed) therewith and thus the wirings are prevented from poking out of the body portion 7 (in the third direction 4 (left side), first direction 2 (rear side) or the like).
  • the wiring protection portions 95, 96 may have rotation restricting portions 98, 99 between the wiring protection portions 95, 96 and the body portion 7.
  • the rotation restricting portions 98, 99 are configured to restrict rotation of the wiring protection portions 95, 96 relative to the body portion 7.
  • the screw hole 97a used for attaching the second wiring protection portion 96 is provided at a location on the substantially middle part, in the front and rear direction, of the second wiring protection portion 96.
  • the location is located in front of the wirings to be protected by the second wiring protection portion 96.
  • a box-shaped cover 99c may be provided around the screw hole 97a.
  • the rotation restricting portion 99 for the second wiring protection portion 96 has a protruding piece portion 99a protruding generally forward from the front end portion of the second wiring protection portion 96, and a rotation restricting rib 99b protruding from the body portion 7 in the left direction (third direction 4).
  • the rib 99b is formed to extend over and along the inner wall surface 34 of the lower edge portion of the body portion 7 in such a manner that a gap substantially equal to a thickness of the protruding piece portion 99a is defined therebetween. Accordingly, when the second wiring protection portion 96 is set on the body portion 7, the protruding piece portion 99a can be inserted and held (or sandwiched) between the rib 99b and the lower edge portion of the body portion 7.
  • the rib 99b and the lower edge portion of the body portion 7 constitute a sandwiching portion capable of sandwiching the protruding piece portion 99a. Then, when the second wiring protection portion 96 is set on the body portion 7, the protruding piece portion 99a is sandwiched between the rib 99b and the lower edge portion of the body portion 7, thereby restricting rotation upon screwing of the fixture 97.
  • the shape correction portion 107 is configured as a protrusion, such as a rib 107a, provided on the body portion 7 for opening the first wiring protection portion 95.
  • the rib 107a abuts against an upper surface of the lower surface portion 95a of the first wiring protection portion 95, which is located in the vicinity of the rear end portion thereof, thereby widening the first wiring protection portion 95 and thus preventing biting of wirings.
  • the rib 107a extends from the body portion in the left direction (third direction 4).
  • a rib bearing portion 107b configured to surface-abut against the rib 107a may be provided as the shape correction portion 107 on a portion of the lower surface portion 95a of the first wiring protection portion 95, which is located toward the rear end portion thereof.
  • the rib bearing portion 107b is configured as a protruding piece protruding rearward from the lower surface portion 95a.
  • the rib bearing portion 107b can be formed to be thicker than other portions of the first wiring protection portion 95 in order to finely adjust an abutting position thereof against the abutting portion 107a, to secure a required strength and the like.
  • the shape correction portion 107 is provided between the first wiring protection portion 95 and the body portion 7 (e.g., first body portion 54), it is possible to restore (open) the shrunken first wiring protection portion 95 to the normal shape by simply setting the first wiring protection portion 95 on the body portion 7 and then surface-abutting the rib bearing portion 107b against the rib 107a. Therefore, it can be ensured that the first wiring protection portion 95 (the lower surface portion 95a thereof) is positioned at a defined location on the body portion 7.
  • the rotation restricting portion 98 serves as a reference for an attaching position thereof and also as the shape correction portion 107, thereby ensuring that the upper surface portion 95b is installed at a correct position.
  • a sinking prevention portion 109 for preventing the second wiring protection portion 96 from sinking down into the body portion 7 may be provided between the body portion 7 (e.g., first body portion 54) and the second wiring protection portion 96. If a restoring force of wirings, which have been pushed and bent by the second wiring protection portion 96 when the second wiring protection portion 96 has been set on the body portion 7, causes one side (front or rear side), in the front and rear direction (first direction 2), of the second wiring protection portion 96 to be lifted toward the near side in the third direction (left direction), the other side (rear or front side) is pushed into the body portion 7 toward the far side in the third direction (right direction), thereby causing sinking of the second wiring protection portion 96.
  • the sinking prevention portion 109 may be configured as front and rear stoppers 109b or displacement restricting portions provided, respectively, at locations on the body portion 7, which correspond, respectively, to front and rear end portions of the second wiring protection portion 96, so that the front and rear end portions of the second wiring protection portion 96 are born thereon in the third direction 4.
  • the stoppers 109b can be formed as ribs, ridges or the like for restricting, respectively, the front and rear end portions of the second wiring protection portion 96 so as not to be displaced toward the far side in the third direction 4 by more than a predetermined amount.
  • the ribs or ridges for the stoppers protrude from the body portion 7 in the left direction (third direction 4) to have a height preventing the second wiring protection portion 96 from being displaced more toward the far side than the correct position thereof.
  • a bearing portion 109a can be appropriately provided to stably bear the front and rear stoppers 109b with respect to the third direction 4.
  • the front bearing portion 109a is formed on a portion (side surface) of the protruding piece portion 99a constituting the rotation restricting portion 99, which faces the body portion 7 (e.g., the first body portion 54).
  • This front sinking prevention portion 109 is integrally formed with the rib 99b of the rotation restricting portion 99.
  • the rear bearing portion 109a is formed as a cutout portion formed in the lower surface portion 95a.
  • the reel 13 having the wire 6 wound thereon is mounted on the mount portion 14, and then the main switch 36 is turned on.
  • the distal end of the body portion 7 is oriented toward reinforcing bars 5, the reinforcing bars 5 are inserted between the upper and lower curl guides 21, 22, and then the trigger switch 9 is pulled.
  • the wire feeding unit 18 is activated so that the wire 6 is drawn out from the reel 13 and then is delivered to the front side of the body portion 7.
  • the wire 6 delivered to the front side of the body portion 7 is curled by the curl guides 21, 22 and also guided to be wrapped in one turn or a plurality of turns around the reinforcing bars 5.
  • the loop-shaped wire 6 wound around the reinforcing bars 5 is twisted by the twisting unit 25, so that a diameter of the loop is reduced, thereby binding the reinforcing bars 5.
  • the electric power tool such as the binding machine 1 as described above, includes, in the body portion 7, the driving unit, such as a motor; various components, such as sensors or LEDs; the circuit board 32, on which the control unit 40 is mounted; the connectors 71a to 71c for electrically connecting therebetween and the like. If the body portion 7 has only a structure, in which the connectors 71a to 71c are simply pushed into the inside of the body portion 7 when routing the wirings 72a to 72c, assemblability or maintainability to the body portion 7 is deteriorated.
  • the driving unit such as a motor
  • various components such as sensors or LEDs
  • the circuit board 32 on which the control unit 40 is mounted
  • the connectors 71a to 71c for electrically connecting therebetween and the like.
  • the receiving portion 46 Since the receiving portion 46 is fixed to the body portion 7, the connectors 71a to 71c received in the receiving portion 46 are hardly shaken due to vibration or the like, thereby making it difficult for the connectors 71a to 71c to be damaged. Therefore, it is possible to enhance quality performance of the electric power tool.
  • the receiving portion 46 is arranged in the rear of the driving unit, i.e., on the opposite side to the output shaft of the twist motor 27. Therefore, a part of the electric power tool, which serves as a tool (twisting unit 25 in the case of the binding machine 1 and the like), can be arranged in front of the body portion 7, the driving unit can be arranged in the rear of the body portion 7, the circuit board 32 can be arranged to be close to the driving unit, and also the receiving portion 46 can be arranged in the rear space 42 in the rear of the twist motor 27. As a result, the empty space in the rear of the twist motor 27 can be effectively utilized.
  • the plurality of chambers 82a to 82c are provided inside the receiving portion 46. Therefore, the connectors 71a to 71c can be received in the plurality of chambers 82a to 82c, or the plurality of connectors 71a to 71c can be individually received and fixed therein. As a result, it is possible to enhance assemblability and maintainability of the connectors 71a to 71c to the receiving portion 46. Also, the plurality of chambers 82a to 82c are partitioned by the partitions 81a, 81b, thereby preventing the plurality of connectors 71a to 71c from interfering with each other inside the receiving portion 46.
  • the shapes of the plurality of chambers 82a to 82c match respectively with the shapes of the plurality of connectors 71a to 71c to be received therein. Therefore, the connectors 71a to 71c can be individually fitted into the respective chambers 82a to 82c, so that the connectors 71a to 71c are not shaken due to vibration or the like, thereby making it difficult for the connectors 71a to 71c to be damaged. Thus, it is possible to enhance quality performance of the electric power tool. Also, the plurality of chambers 82a to 82c are configured to have different shapes to match with the shapes of the connectors 71a to 71c. Therefore, connectors having different shapes can be used as the plurality of connectors 71a to 71c, thereby preventing the connectors 71a to 71c from being misassembled.
  • the receiving portion 46 is fixed to be spaced from the inner side walls 85, 86 of the body portion 7.
  • the second receiving portions 87, 88 are formed between the receiving portion 46 and the inner side walls 85, 86. Therefore, wirings (power supply wirings 38, signal wirings 39 and the like) installed inside the body portion 7 can be held by the second receiving portions 87, 88.
  • the connectors 71a to 71c and thus the wirings 72a to 72c having the connectors 71a to 71c
  • the other wirings can be separated to be hierarchically held in the inside and outside of the receiving portion 46. Accordingly, it is possible to enhance assemblability and maintainability of the connectors 71a to 71c or the wirings to the body portion 7.
  • the wiring holding portion 91 is provided on the outer surfaces 79, 80 of the receiving portion 46, which oppose the inner side walls 85, 86 of the body portion 7. In particular, the wiring holding portion 91 is provided on the second outer surface 80 of the receiving portion 46. Therefore, by using the wiring holding portion 91, the wirings (power supply wirings 38, signal wirings 39 and the like) and the connectors 71a to 71c (and thus the wirings 72a to 72c having the connectors 71a to 71c) can be separated to be hierarchically received and held in the inside and outside of the receiving portion 46.
  • the second receiving portion 87, the receiving portion 46 and the wiring holding portion 91 are provided in the widthwise direction of the body portion 7, thereby forming a receiving space having a three-layered structure. Also, since the connectors 71a to 71c can be held by the receiving portion 46 and the wirings (power supply wirings 38, signal wirings 39 and the like) can be held by the second receiving portion 46 and the wiring holding portion 91, a space in the body portion 7 can be effectively utilized and thus the body portion 7 can be further compacted. Also, by receiving the connectors 71a to 71c or the wirings as described above, it is possible to enhance assemblability and maintainability of the connectors 71a to 71c or the wirings to the body portion 7.
  • the receiving portion 46 may be brought close, for example, to the inner side wall 85 of the body portion 7, so that the second receiving portion 87 is not provided between the receiving portion 46 and the inner side wall 85, thereby providing a two-layered structure including the receiving portion 46 and the wiring holding portion 91.
  • the plurality of openings extending from inside to outside of the body portion 7 may be provided in the body portion 7 and the plurality of openings may serve as connector connection portions 94a to 94c having shapes matching with shapes of a plurality of connectors 71d to 71i respectively. Therefore, connectors having different shapes can be used as the plurality of connectors 71d to 71i, thereby preventing the connectors 71d to 71i from being misassembled in the connector connection portions 94a to 94cl. Since the plurality of openings provided in the body portion 7 are used as the connector connection portions 94a to 94c, the connectors 71d to 71i can be directly held on the body portion 7.
  • the connectors 71d to 71i can have a structure robust against vibration, thereby enhancing assemblability and maintainability of the connectors 71d to 71i to the body portion 7. Further, by using the connector connection portions 94a to 94c, wirings 72a to 72c extending from inside to outside of the body portion 7 can be easily provided.
  • the wiring protection portions 95, 96 may be provided with the rotation restricting portions 98, 99 for restricting rotation of the wiring protection portions 95, 96 relative to the body portion 7. Therefore, the rotation restricting portions 98, 99 can restrict rotation of the wiring protection portions 95, 96 relative to the body portion 7 when the wiring protection portions 95, 96 are attached, thereby preventing positions of the wiring protection portions 95, 96 from being shifted. As a result, it is possible to facilitate attaching of the wiring protection portions 95, 96.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Power Tools In General (AREA)
  • Connection Or Junction Boxes (AREA)
  • Manipulator (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Pinball Game Machines (AREA)

Claims (13)

  1. Outil électrique comprenant :
    une unité d'entraînement (17, 27) générant une force d'entraînement par l'électricité et divers composants (9, 35, 36) fonctionnant par l'électricité ;
    une carte de circuit (32) sur laquelle une unité de commande (40) configurée pour commander l'unité d'entraînement (17, 27) et les divers composants (9, 35, 36) est montée ;
    une pluralité de connecteurs (71a à 71c) connectant une pluralité de câblages (72a à 72c), qui s'étendent à partir de l'unité d'entraînement (17, 27) et des divers composants (9, 35, 36), à une pluralité de câblages (72a à 72c), qui s'étendent à partir de la carte de circuit (32) ;
    une partie corps (7) dans laquelle sont installés l'unité d'entraînement (17, 27), les divers composants (9, 35, 36), la carte de circuit (32) et la pluralité de connecteurs (71a à 71c) ; et
    une partie de réception (46) qui reçoit la pluralité de connecteurs (71a à 71c) dans celle-ci et qui est fixée à la partie corps (7),
    caractérisé en ce que la partie de réception (46) comporte une partie contenant (75) et une partie couvercle (76) fermant la partie contenant (75) adaptée pour fixer les connecteurs (71a à 71c) à la partie contenant (75) hors de la partie corps (7).
  2. Outil électrique selon la revendication 1,
    dans lequel l'unité d'entraînement comprend un moteur (27) ayant un arbre de sortie faisant saillie à partir d'un côté d'extrémité du moteur, et
    dans lequel la partie de réception (46) est agencée sur un côté opposé à l'arbre de sortie du moteur (27).
  3. Outil électrique selon la revendication 1 ou 2,
    dans lequel la partie de réception (46) a une pluralité de chambres (82a à 82c) divisées à l'intérieur de celle-ci, et
    dans lequel la pluralité de chambres (82a à 82c) sont configurées pour être capables de recevoir les connecteurs (71a à 71c).
  4. Outil électrique selon la revendication 3,
    dans lequel la pluralité de chambres (82a à 82c) reçoivent respectivement la pluralité de connecteurs (71a à 71c) devant être reçus.
  5. Outil électrique selon la revendication 4,
    dans lequel la pluralité de chambres sont configurées pour avoir une forme coïncidant avec une forme des connecteurs (71a à 71c) respectifs devant être reçus.
  6. Outil électrique selon l'une quelconque des revendications 3 à 5,
    dans lequel la pluralité de chambres (82a à 82c) sont configurées pour avoir des formes différentes.
  7. Outil électrique selon l'une quelconque des revendications 1 à 6,
    dans lequel une partie de maintien de câblage (91) capable de maintenir un câblage (38, 39) est prévue sur une surface extérieure de la partie de réception (46) opposée à une paroi latérale intérieure (85, 86) de la partie corps (7).
  8. Outil électrique selon l'une quelconque des revendications 1 à 6,
    dans lequel la partie de réception (46) est fixée pour être espacée d'une paroi latérale intérieure (85, 86) de la partie corps (7).
  9. Outil électrique selon la revendication 8,
    dans lequel la partie de réception (46) comprend :
    une première surface extérieure (79) opposée à la paroi latérale intérieure (85) de la partie corps (7) ; et
    une seconde surface extérieure (80) située à l'opposé de la première surface extérieure (79),
    dans lequel une partie de maintien de câblage (91) capable de maintenir un câblage est prévue sur la seconde surface extérieure (80).
  10. Outil électrique selon l'une quelconque des revendications 1 à 9,
    dans lequel la partie de réception (46) est formée d'un seul tenant à l'intérieur de la partie corps (7).
  11. Outil électrique selon l'une quelconque des revendications 1 à 10,
    dans lequel la partie corps (7) a une pluralité d'ouvertures (94a à 94c) s'étendant à partir de l'intérieur jusqu'à l'extérieur de celle-ci, et
    dans lequel la pluralité d'ouvertures (94a à 94c) ont une forme coïncidant avec une forme des connecteurs (71a à 71c) respectifs pour être capables de maintenir les connecteurs respectifs.
  12. Outil électrique selon l'une quelconque des revendications 1 à 10,
    dans lequel une partie de protection de câblages (95, 96) capable de protéger les câblages est prévue à l'intérieur de la partie corps (7).
  13. Outil électrique selon la revendication 12,
    dans lequel la partie de protection de câblages (95, 96) a une partie de restriction de rotation (98, 99) configurée pour restreindre une rotation de la partie de protection de câblages (95, 96) par rapport à la partie corps (7).
EP19157476.3A 2018-02-16 2019-02-15 Outil électrique Active EP3533565B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22160728.6A EP4029656A1 (fr) 2018-02-16 2019-02-15 Outil électrique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018025865 2018-02-16
JP2019004097A JP7243199B2 (ja) 2018-02-16 2019-01-15 電動工具

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP22160728.6A Division EP4029656A1 (fr) 2018-02-16 2019-02-15 Outil électrique

Publications (3)

Publication Number Publication Date
EP3533565A2 EP3533565A2 (fr) 2019-09-04
EP3533565A3 EP3533565A3 (fr) 2019-10-02
EP3533565B1 true EP3533565B1 (fr) 2022-03-30

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP19157476.3A Active EP3533565B1 (fr) 2018-02-16 2019-02-15 Outil électrique
EP22160728.6A Pending EP4029656A1 (fr) 2018-02-16 2019-02-15 Outil électrique

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP22160728.6A Pending EP4029656A1 (fr) 2018-02-16 2019-02-15 Outil électrique

Country Status (2)

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EP (2) EP3533565B1 (fr)
CN (1) CN110155401B (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5217621B2 (fr) 1972-09-30 1977-05-17
JP5217621B2 (ja) * 2008-05-19 2013-06-19 マックス株式会社 鉄筋結束機における配線構造
CN104755231B (zh) * 2012-10-29 2017-06-06 日立工机株式会社 电动工具
EP2946886B1 (fr) * 2014-03-28 2017-02-22 Black & Decker Inc. Module de commutation et de commande électronique pour un outil électrique
JP6392013B2 (ja) * 2014-07-17 2018-09-19 株式会社マキタ 電動工具
EP3162513B1 (fr) * 2015-10-30 2019-04-17 Black & Decker Inc. Moteur sans balai à puissance élevée
DE102016214106A1 (de) * 2016-08-01 2018-02-01 Robert Bosch Gmbh Kontakthaltervorrichtung für eine Handwerkzeugmaschine

Also Published As

Publication number Publication date
CN110155401A (zh) 2019-08-23
EP4029656A1 (fr) 2022-07-20
EP3533565A2 (fr) 2019-09-04
EP3533565A3 (fr) 2019-10-02
CN110155401B (zh) 2022-07-19

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