CN110155401B

CN110155401B - Electric tool

Info

Publication number: CN110155401B
Application number: CN201910116697.1A
Authority: CN
Inventors: 滨野晃史; 石黑博树; 吉田祐介
Original assignee: Max Co Ltd
Current assignee: Max Co Ltd
Priority date: 2018-02-16
Filing date: 2019-02-15
Publication date: 2022-07-19
Anticipated expiration: 2039-02-15
Also published as: EP3533565A3; CN110155401A; EP3533565B1; EP3533565A2; EP4029656A1

Abstract

The invention provides an electric tool, which can mainly improve the assembling performance and the maintenance performance of a connector part of the electric tool relative to a main body part. The electric tool is provided with: a drive unit that generates drive force using electric power and various components that function using electric power; a substrate (32) on which a control unit (40) for controlling the drive unit and various components is mounted; a plurality of connectors (71 a-71 c) for connecting a plurality of wires (72 a-72 c) extending from the drive unit and various components to a plurality of wires (72 a-72 c) extending from the substrate (32); a main body part (7) for installing a driving part, various structural components, a substrate (32) and a plurality of connectors (71 a-71 c); and a housing section (46) that houses the plurality of connectors (71 a-71 c) and is fixed to the main body section (7).

Description

Electric tool

Technical Field

The technology disclosed in the present specification relates to an electric power tool.

Background

In order to improve the efficiency of the work, various electric tools are used. Such a power tool is, for example, a binding machine (see patent document 1). A binding machine is used to bind objects to be bound, such as reinforcing bars, at a construction site or the like. Since the operation is reliably accelerated when the binding machine is used, the machine is expected to be spread more and more.

Documents of the prior art

Patent document

Patent document 1: japanese patent No. 5217621

Disclosure of Invention

The electric power tool includes a drive unit such as a motor, various components such as a sensor and an LED, a board on which a control unit is mounted, and wiring and a connector for electrically connecting these components. However, the connector is often housed by being pressed into a vacant space in the main body due to the winding of the wiring, and the connector and the wiring are not easy to assemble and maintain with respect to the main body. Therefore, the technique disclosed in the present specification mainly aims to solve the above-described problems.

In order to solve the above problem, an electric power tool disclosed in the present specification includes: a drive unit that generates drive force using electric power and various components that function using electric power; a substrate on which a control unit for controlling the drive unit and the various components is mounted; a plurality of connectors that connect a plurality of wires extending from the driving unit and the various components to a plurality of wires extending from the substrate; a main body portion in which the driving portion, the various components, the substrate, and the plurality of connectors are disposed; and an accommodating portion that accommodates the plurality of connectors and is fixed to the main body portion.

According to the electric power tool, the plurality of connectors that are press-fitted into the empty space inside the main body are accommodated in the accommodating portion and fixed to the main body in a winding relationship of the wiring, and therefore, the assembling property, the maintenance property, and the like of the connector portion can be improved.

Drawings

Fig. 1 is a side view of an internal structure of an electric power tool (binding machine) according to the present embodiment.

Fig. 2A is an exploded perspective view showing a state before the connector is accommodated in the accommodating portion of fig. 1.

Fig. 2B is an exploded perspective view of the housing portion subsequent to fig. 2A.

Fig. 2C is an overall perspective view of the housing portion housing the connector.

Fig. 3A is a side view of the container portion of fig. 2A.

Fig. 3B is a plan view of the container portion of fig. 3A.

Fig. 4 is an overall perspective view showing a modification of the housing portion of fig. 2C.

Fig. 5 is a schematic longitudinal sectional view of the main body of the electric power tool at the position of the receiving portion.

Fig. 6 is a partial perspective view of a rear portion of a main body of an electric power tool showing another modification of the housing portion.

Fig. 7 is a partially enlarged side view showing the connector coupling portion as viewed from the inside of the main body portion of the electric power tool.

Fig. 8 is a partially enlarged side view showing the connector coupling portion as viewed from the outside of the main body portion of the electric power tool.

Fig. 9 is an exploded perspective view of the main body of the electric power tool showing a state in which the front first wiring protection unit is attached.

Fig. 10 is a partially enlarged perspective view of the periphery of the trigger switch of fig. 9.

Fig. 11 is a component diagram of the first wiring protection unit. Wherein (a) is a side view, (b) is a bottom view, (c) is a sectional view taken along line A-A of (a), and (d) is a perspective view.

Fig. 12 is an exploded perspective view of the main body of the electric power tool as viewed obliquely from the rear lower side, showing the state of attachment of the second wiring protection unit on the rear side.

Fig. 13 is a component diagram of the second wiring protection unit. Wherein (a) is a perspective view, (B) is a side view, and (c) is a sectional view taken along line B-B of (B).

Description of the reference numerals

1: binding machine (electric tool) 7: main body portion 9: trigger switch (structural member) 17: solenoid (driving portion) 27: torsion motor (drive unit) 32: substrate 35: setting unit (component) 36: main switch (structural member) 40: the control unit 46: housing portions 71a to 71 i: connectors 72a to 72 c: wiring 79: first outer surface 80: second

outer surfaces

81a, 81 b: partitions 82a to 82 c: chambers 85, 86: side inner walls 87, 88: second housing section 91: wiring holding portions 94a to 94 c: connector coupling portions 95, 96: wiring protection units 98, 99: rotation restricting part

Detailed Description

Hereinafter, the present embodiment will be described in detail with reference to the drawings. Fig. 1 to 13 are views for explaining this embodiment.

[ example 1 ]

The structure of this embodiment will be described below.

Fig. 1 shows a binding machine 1 as an example of a power tool. The arrows in the figure show a first direction 2 which is transverse to the strapping apparatus 1, a second direction 3 which is a direction orthogonal to the first direction 2 and longitudinal to the strapping apparatus 1, and a third direction 4 which is a direction orthogonal to the first direction 2 and the second direction 3 and width to the strapping apparatus 1, respectively.

The binding machine 1 is an electric tool that binds a binding object such as a reinforcing bar 5 or a work object with a binding member such as a binding wire 6. The binding machine 1 includes: a twisting section 25 that twists a binding member such as a binding wire 6 that is guided in a loop shape so as to wind around a binding object such as a reinforcing bar 5 and binds the binding object such as the reinforcing bar 5; a torsion motor 27 for driving the torsion portion 25; a substrate 32 having a mounting surface 32a on which a control unit 40 (fig. 6) for controlling the torsion motor 27 is mounted; and a main body part 7 for accommodating the torsion part 25, the torsion motor 27, and the substrate 32. A handle portion 8 extending outward, that is, in the substantially second direction 3 is provided at a substantially intermediate portion of the body portion 7 in the first direction 2. The main body portion 7 has a substantially hollow case extending in the first direction 2. Hereinafter, the reinforcing bar 5 is described as an example of the object to be bound, and the binding wire 6 is described as an example of the binding member. The side of the body 7 facing the reinforcing bar 5 in the first direction 2 is referred to as the front side of the body 7, the opposite side is referred to as the rear side of the body 7, the side of the body 7 where the grip portion 8 is provided in the second direction 3 is referred to as the lower side of the body 7, and the opposite side is referred to as the upper side of the body 7. The body portion 7 can be oriented in various directions depending on the working posture of the binding machine 1, and therefore, front/rear and upper/lower sides are opposite. The third direction 4 is a direction in the left-right direction (the back side is the right side, and the front side is the left side) to the operator who grips the binding machine 1, and is a direction perpendicular to the paper surface in the figure.

The handle portion 8 is provided in the body portion 7 to facilitate gripping of the binding machine 1, and is attached to the front side of the body portion 7 at a slightly inclined angle with respect to the second direction 3 so as to facilitate gripping. The handle portion 8 is a substantially hollow member. Hereinafter, a portion (upper end portion) of the handle 8 on the side of the body portion 7 is referred to as a base portion or root portion of the handle 8, and a portion (lower end portion) on the opposite side is referred to as a distal end portion of the handle 8. An electrical component such as a trigger switch 9 as an operation switch is provided on the front side of the root of the handle 8. A battery 11 as a power source is detachably mounted to the distal end portion of the handle portion 8 via a battery mounting portion 12. Then, the trigger switch 9 is pulled in a power-on state to operate the binding machine 1.

A load support portion 67 that supports a load by being placed on the back of the operator's hand may be provided on the rear side of the armrest portion 8 at the lower portion of the body portion 7. A recess 66 for receiving the back of the hand holding the handle 8 may be provided in the front side of the load support portion 67 and in the rear side of the base portion of the handle 8 by cutting out the entire lower portion of the body 7. By providing the recessed portion 66 in this manner, the handle portion 8 can be positioned (at the grip position of) the body portion 7 on the upper side or the central portion of the body portion 7 as compared with the conventional configuration. Accordingly, the position of the middle finger when gripping the handle portion 8 (the position near the lower end portion of the trigger switch 9) can be made closer to the center of gravity position 68 of the binding machine 1 than in the conventional structure. This improves the weight balance of the binding machine 1, and improves the operability of the binding machine 1. The center of gravity position 68 of the binding machine 1 is roughly determined by the weight of the main body 7 and the weight of the battery 11, and is roughly the position shown in fig. 1.

The binding machine 1 is configured to bind the reinforcing bar 5 by twisting a binding wire 6 that is guided in a loop shape so as to wind around the reinforcing bar 5. The binding wire 6 is a consumable product, and can be wound around a reel 13 (see fig. 8). A mounting portion (a reel mounting portion) 14 (see fig. 8) for rotatably mounting the reel 13 is provided at a rear portion of the main body portion 7 (for example, a right side of the main body portion 7). A spool detection unit including an electrical component such as a sensor that can detect the attachment/detachment state of the spool 13 can be provided in the mounting portion 14. The roll detection unit is attached to the sub-board and to the main body 7. The mounting portion 14 is provided with a stopper portion for restricting rotation of the spool 13. The braking unit brakes the rotation of the reel 13, for example, at the time when the conveyance of the binding wire 6 is completed. The braking portion includes a driving portion such as a solenoid 17, and the driving portion such as the solenoid 17 is attached to (above) a substantially middle portion of the main body portion 7. The binding wire 6 pulled out from the reel 13 attached to the attachment portion 14 is conveyed to the front side of the main body portion 7 by the binding wire conveying portion 18 (see fig. 8). The binding wire conveying portion 18 is provided at a substantially middle portion of the main body portion 7. The wire feeding unit 18 includes a driving unit implemented by a motor such as a feeding motor 18a (see fig. 8) and a feeding gear driven by the feeding motor 18 a.

The body portion 7 includes

curl guide portions

21 and 22 at a distal end portion thereof for curling the binding wire 6 and guiding the binding wire 6 annularly around the reinforcing bars 5. The binding wire 6 is guided by the curl guides 21, 22 to surround the reinforcing bar 5 by one or more turns. The pair of

curl guide portions

21 and 22 is provided with a gap in the vertical direction (second direction 3) of the binding machine 1. An opening (insertion portion) 23 for inserting the reinforcing bar 5 is provided between the pair of

curl guide portions

21, 22. The pair of

curl guide portions

21 and 22 are provided to have different lengths so that (the curl guide portion 21 on the upper side) is longer and (the curl guide portion 22 on the lower side) is shorter. The upper curl guide 21 is fixed (fixed curl guide). The lower curl guide portion 22 may be fixed or movable (movable curl guide portion). In the present embodiment, the lower curl guide 22 is attached to the body 7 so as to be rotatable in the second direction 3, i.e., the vertical direction, about the curl guide shaft 24 extending in the third direction 4.

The body portion 7 is provided with a twisted portion 25, and the twisted portion 25 twists the annular binding wire 6 around the wound steel bar 5 to reduce the diameter of the loop and bind the loop. The torsion portion 25 is formed in a substantially shaft shape extending in the first direction 2, and the torsion portion 25 is connected to an output shaft protruding from one end side of the torsion motor 27 via a speed reduction mechanism 26. Then, the torsion portion 25 operates by rotationally driving the torsion motor 27.

Various driving units provided in the binding machine 1, such as the conveyance motor 18a, the torsion motor 27, and the solenoid 17, are sequentially controlled by the control unit 40. The control section 40 is mounted on the substrate 32 (control substrate or main substrate). The substrate 32 is disposed between the torsion motor 27 inside the body 7 and the inner wall surface 34 on the handle 8 side in a state of being housed in the substrate case 33. The substrate case 33 is a tray or a flat box-shaped container having an opening on one surface thereof, which can accommodate the substrate 32. The substrate 32 is formed in a substantially square shape in plan view, and the planar shape of the substrate case 33 is formed substantially similarly to the substrate 32. The board case 33 is laterally fixed to a side surface of (a first body portion 54 to be described later of) the body portion 7 by a fixing portion 56. The binding machine 1 is provided with a setting unit 35, and the setting unit 35 can set operation conditions of the binding machine 1, specifically, operation conditions of various driving units such as the conveyance motor 18a, the torsion motor 27, and the solenoid 17. The setting unit 35 sets, for example, the number of windings of the binding wire 6 wound around the reinforcing bar 5, the operation time of the conveyor motor 18a, the operation timing of the solenoid 17, the torque amount of the torsion motor 27, and the like. The setting unit 35 is mounted on a switch board 37 together with electrical components such as a main power switch or a main switch 36 for turning on and off the power supply. Various driving units such as the conveyance motor 18a, the torsion motor 27, and the solenoid 17 provided in the binding machine 1, various boards such as the board 32 (main board), the switch board 37, and the sub board, and the battery 11 (battery board provided inside the battery) are connected by various wires. Examples of the various wires include a power supply wire 38 and a signal wire 39, and the wires such as the power supply wire 38 and the signal wire 39 are wound inside the main body 7.

In view of the above-described basic configuration, the electric power tool of the present embodiment has the following configuration.

(1) The electric power tool of the present embodiment includes: a drive unit that generates a drive force by electric power and various components that function by electric power; a substrate 32 on which a control unit 40 for controlling the drive unit and various components is mounted; a plurality of connectors 71a to 71C (see fig. 2A to 2C) for connecting a plurality of wires 72A to 72C (see fig. 2A to 2C) extending from the driving unit and various components to a plurality of wires 72A to 72C extending from the substrate 32; a main body portion 7 in which a driving portion, various components, a board 32 (see fig. 6), and a plurality of connectors 71a to 71c are provided; and a housing portion 46 that houses the plurality of connectors 71a to 71c and is fixed to the body portion 7.

Here, the electric power tool is not limited to the above-described binding machine 1, but the configuration of the present embodiment can be suitably applied to the binding machine 1. The main body 7 can be divided into a first main body 54 and a second main body 55 in the width direction (the third direction 4 or the left-right direction) (see fig. 5). In the case of the binding machine 1, the driving unit is a torsion motor 27 or the like, particularly the torsion motor 27, which drives the solenoid 17 of the braking unit, the conveying motor 18a of the binding wire conveying unit 18, and the torsion unit 25. In the case of the binding machine 1, the components include a sensor of the roll detecting unit, the trigger switch 9, the setting unit 35, the main switch 36, and a light source such as an LED for displaying the on or off state of the main switch 36.

As shown in fig. 2A to 2C, the connectors 71a to 71C are provided singly or in plurality at the end portions, intermediate portions, and the like of the wires 72A to 72C constituting the power supply wire 38, the signal wire 39, and the like. The connectors 71a to 71c may be formed as individual connectors that can be individually connected for each wire, but in the present embodiment, they are formed as collective connectors that can collectively connect a plurality of wires 72a to 72c at one time. The connectors 71a to 71c can be provided in plural numbers, for example, by the number and thickness of the wires 72a to 72c, and a component (or substrate) to be connected. In the present embodiment, there is the first connector 71a capable of simultaneously connecting 5 thinnest first wires 72 a. The second connector 71b is provided to simultaneously connect 4 intermediate (thicker than the first wiring 72a and thinner than the third wiring 72c) second wirings 72 b. The third connector 71c is provided to simultaneously connect the thickest third wires 72c in 2 figures. However, the number of the connectors 71a to 71c is not limited to 3. The connectors 71a to 71c in the figure are connected to each other by a male connector and a female connector.

The housing portion 46 is formed in a box shape capable of housing the plurality of connectors 71a to 71 c. The housing portion 46 is composed of at least a container portion 75 having an opening on one surface and a lid portion 76 that closes the opening of the container portion 75. The lid portion 76 is openable and closable in the width direction (third direction 4) of the body portion 7 with respect to the container portion 75. The container portion 75 and the lid portion 76 are fixed by claw fixing, screw fixing, or the like. The housing portion 46 is fixed to the main body portion 7 in the width direction by a fixing member 77 (see fig. 1) such as a screw in a state of being housed inside the main body portion 7. Therefore,

attachment pieces

75a and 75b having screw holes are integrally provided on the upper and lower portions of the container portion 75, respectively. In addition, a mounting piece 76a that can be fastened together with the upper mounting piece 75a of the container portion 75 is integrally provided on the upper portion of the lid portion 76. No attachment piece or the like is provided on the lower portion of the lid portion 76. According to this configuration, the container portion 75 can be brought into a state of being able to be rotationally displaced about the attachment piece 75b (to the rear side) by temporarily locking the attachment piece 75b on the lower side of the container portion 75 to the body portion 7 with the fastener 77 relatively loose. Further, for example, the connectors 71a to 71c can be attached to the container portion 75 by extending the container portion 75 to the outside of the body portion 7. When the connectors 71a to 71c are attached to the container portion 75, the cover 76 is attached to the container portion 75 and the connectors 71a to 71c are accommodated in the accommodating portions (first accommodating portions) 46. Thereafter, the receiving portion 46 is moved to a predetermined position in the main body portion 7 (by being rotationally displaced forward about the mounting piece 75 b). Then, the mounting

pieces

75a and 76a are formally fixed to the body portion 7 by the fixing members 77, and the mounting piece 75b is formally fixed to the body portion 7 by the fixing members 77. Such a mounting method can facilitate the work and shorten the wirings 72a to 72 c.

At this time, the wiring restricting portion 78 may be provided in the housing portion 46. The wiring regulating portion 78 can be formed as, for example, a wiring winding arm protruding downward (from the board case 33) from the attachment piece 75b at the lower portion of the container portion 75. The wiring regulating section 78 regulates, for example, the wiring (for example, the power supply wiring 38 in fig. 5) extending from the substrate 32, the substrate case 33, and the like and passing through the outside of the housing section 46 from the lower side to the upper side, and regulates the direction and the direction of the wiring. Thus, for example, by fixing the housing portion 46 to the first body portion 54 constituting the body portion 7, the wiring restricting portion 78 naturally restricts the peripheral wiring to be directed to the outside of the housing portion 46, and the ease of assembly and maintenance of the wiring to the body portion 7 and the container portion 75 can be improved.

The receiving portion 46 may be formed of an opaque member, but all or a part of the receiving portion 46 may be formed of a transparent member or a translucent member. This allows the housing state of the connectors 71a to 71c in the housing portion 46 to be visually confirmed. Therefore, it is possible to find and prevent the trouble such as the biting of the connectors 71a to 71c into the receiving portion 46 and the connection failure of the connectors 71a to 71 c.

(2) As shown in fig. 1, the housing portion 46 is disposed on the rear side of the drive portion, i.e., on the opposite side of the output shaft of the torsion motor 27.

A torsion portion 25 is provided on the front side of the torsion motor 27 in the interior of the main body portion 7 via a speed reduction mechanism 26, and a rear space 42 is formed on the rear side of the torsion motor 27. The receiving portion 46 is provided in the rear space 42. The substrate 32 is disposed close to the torsion motor 27. This base plate 32 is the above-described main base plate in the case of the binding machine 1. The substrate 32 is arranged such that the back surface (soldering surface) is turned over toward the torsion motor 27 so that the mounting surface 32a (see fig. 6) faces toward the handle 8. The substrate 32 is disposed between the torsion motor 27 and the handle portion 8 so as to be closer to the torsion motor 27 than an inner wall surface 34 (bottom wall) of the body portion 7 on the handle portion 8 side. For example, the base plate 32 is disposed at the same height as or above the curl guide shaft 24 with reference to the curl guide shaft 24 located between the inner wall surface 34 and the torsion motor 27 (in the second direction 3). A heat-resistant member such as a heat-resistant sheet 41 (see fig. 1) may be interposed between the substrate 32 and the torsion motor 27 as necessary. The heat-resistant sheet 41 can be provided by mounting rubber, resin, or the like on the upper surface of the substrate case 33. In this way, by interposing a heat-resistant member such as the heat-resistant sheet 41 between the substrate 32 and the torsion motor 27, the substrate 32 can be protected from the heat generated by the torsion motor 27. Further, by using rubber, resin, or the like as the heat-resistant sheet 41, an effect as a vibration isolator can be expected.

(3) As shown in fig. 3A and 3B, the interior of the housing portion 46 is divided into a plurality of chambers 82a to 82 c. The plurality of chambers 82a to 82c are partitioned by

partitions

81a and 81b, and accommodate the plurality of connectors 71a to 71 c. In the present embodiment, the connectors 71a to 71c are housed in the respective chambers 82a to 82c one by one, but for example, a plurality of (for example, 2) connectors 71a to 71c may be housed in (any one of) one chamber 82a to 82 c.

The

partitions

81a and 81b are provided substantially along the direction of the wirings 72a to 72 c. In this case, the housing portion 46 is partitioned into 3 in the substantially front-rear direction by 2

partitions

81a and 81b extending in the substantially vertical direction (second direction 3).

(4) Each of the chambers 82a to 82c is configured to have a shape corresponding to the shape of the plurality of connectors 71a to 71c to be housed. The plurality of chambers 82a to 82c are configured to have different shapes so as to correspond to the shapes of the connectors 71a to 71c, respectively. Further, all of the plurality of chambers 82a to 82c may be formed in the same shape or at least two of the plurality of chambers 82a to 82c may be formed in different shapes according to the shape of the connectors 71a to 71c to be housed (for example, when the shapes of all of the connectors 71a to 71c to be housed are the same and the shapes of only some of the connectors 71a to 71c are different). Further, as with the shape of the chambers 82a to 82c, the sizes (dimensions) of the chambers 82a to 82c may be all the same size or at least 2 sizes, not only in the case of all being different sizes.

Here, the first connector 71a, the second connector 71b, and the third connector 71c shown in fig. 2A have different width dimensions, sizes, and shapes depending on the number and thickness of the wires 72A to 72c to be connected. The chambers 82a to 82c of the housing portion 46 are also formed to have different depths, sizes, and shapes according to the connectors 71a to 71 c. Slits 83a to 83c through which the wires 72a to 72c pass are provided in the peripheral wall portion of the housing portion 46 (the container portion 75) at positions that become the upper and lower portions of the chambers 82a to 82 c. The slits 83a to 83c are also formed to have different depths and widths depending on the number and thickness of the wires 72a to 72 c. The receiving portion 46 can be formed to have a width dimension corresponding to the widest width of the connectors 71a to 71 c. Further, for example, depending on the difference in width of the connectors 71a to 71C, as shown in fig. 2C, a stepped portion 84 may be provided on the side surface of the container portion 75 opposite to the opening. Alternatively, as shown in fig. 4, the lid portion 76 may be provided with a stepped portion 84.

(5) As shown in fig. 5, the receiving portion 46 is fixed so as to be separated from the side

inner walls

85, 86 of the body portion 7. Thus, predetermined spaces (second receiving portions) 87, 88 are formed between the receiving portion 46 and the side

inner walls

85, 86.

Here, the side

inner walls

85 and 86 of the body 7 are inner walls of the side surfaces in the width (left-right) direction (third direction 4) of the body 7, in other words, inner walls of the side surfaces of the body 7 in the direction substantially orthogonal to the axial direction of the torsion motor 27 and substantially orthogonal to the longitudinal direction of the handle 8. By separating the housing portion 46 from (one of) the side

inner walls

85, 86 on one side, the spaces (second housing portions) 87, 88 in the width direction, which are predetermined spaces, are formed between the housing portion 46 and the side

inner walls

85, 86, and therefore, the wires (the power supply wire 38, the signal wire 39, and the like) can be passed through the spaces or the spaces (second housing portions) 87, 88 in the width direction. As described above, in the electric power tool of the present embodiment, the connector and the wiring are inserted into and out of the housing portion 46, thereby making the most flexible use of the empty space in the main body portion 7.

(6) The housing portion 46 includes a first outer surface 79 facing the one side inner wall 85 of the body portion 7 and a second outer surface 80 located on the opposite side of the first outer surface 79 and facing the other side inner wall 86, and the second outer surface 80 includes a wire holding portion 91 capable of holding a wire.

The wiring holding portion 91 is formed as a hook portion, for example, so as to be able to accommodate and hold wirings (the power supply wiring 38, the signal wiring 39, and the like) facing in the substantially vertical direction. The hook portion may be oriented arbitrarily, but for example, the distal end is bent toward the front side of the body portion 7. By bending the hook portion toward the front side in this way, the wiring stored and held in the wiring holding portion 91 is not restrained so as to project toward the rear side, and therefore, the wiring at the rear portion of the main body portion 7 can be prevented from being pinched. The wiring holding portion 91 can be provided singly or in plural. The wiring holding portion 91 may be provided on the first outer surface 79, or may be provided on both the first outer surface 79 and the second outer surface 80.

(7) As another example, as shown in fig. 6, the housing portion 46 may be formed integrally with the inside of the main body portion 7.

Here, the housing portion 46 can be integrated with the body portion 7 by forming a portion 92 corresponding to the

attachment pieces

75a, 75b of the container portion 75 as a connection portion (integrated portion) with respect to the body portion 7 (e.g., the first body portion 54), for example.

(8) As shown in fig. 7 and 8, the body portion 7 has a plurality of openings (connector coupling portions 94a to 94c) penetrating between the inside and the outside of the body portion 7, and the plurality of openings are formed in shapes corresponding to the shapes of the plurality of connectors 71d to 71i so as to be able to hold the plurality of connectors 71d to 71i, respectively.

Here, the connector coupling portions 94a to 94c are provided separately from the receiving portion 46, but may be provided in place of the receiving portion 46. The connector coupling portions 94a to 94c are formed so as to individually correspond to the respective connectors of the connectors 71d to 71i different in size and shape, by dividing the number and thickness of the wires to be connected, the components (or boards) to be connected, and the like. Then, the male connectors 71d to 71f are inserted into the connector coupling portions 94a to 94c from the outside or the inside of the body portion 7 (for example, the first body portion 54), and the male connectors 71d to 71f are locked to the body portion 7 by the claw portions or the like. Then, the paired female connectors 71g to 71i are fitted to the male connectors 71d to 71f from the inside or the outside of the body 7. Thereby, the connectors 71d to 71i are coupled with the body portion 7 interposed therebetween. In the present embodiment, the connector connecting portions 94a to 94c are provided between the torsion portion 25 and the trigger switch 9 on the front sides of the board 32 and the board housing 33.

(9) As shown in fig. 1, the binding machine (electric tool) 1 may have

wiring protection units

95 and 96 capable of protecting the wiring (for example, the power supply wiring 38, the signal wiring 39, and other wiring) inside the main body 7.

Here, the

wiring protection portions

95 and 96 are preferably provided singly or in plurality at positions near the peripheral edge portion of the main body portion 7 in the interior of the main body portion 7 in a state of substantially following the peripheral edge portion of the main body portion 7. In the present embodiment, as shown in fig. 9, a first wiring protection portion 95 is provided in a lower portion of the first body portion 54 constituting the body portion 7, on the front side of the handle portion 8. As shown in fig. 12, a second wiring protection portion 96 is provided behind the handle 8. For example, the first wiring protection unit 95 on the front side can be provided in the vicinity of the trigger switch 9. The rear second wire harness protection portion 96 can be provided in the recess 66 provided on the rear side of the handle 8 or in a position behind the recess 66.

The

wiring protection units

95 and 96 may be made of an opaque resin member, but are preferably made of a transparent or translucent resin member so that the protected wiring and the like can be observed from the outside. The

wiring protection portions

95 and 96 are fixed to the main body portion 7 (for example, the first main body portion 54) by fixing members 97 such as screws. Therefore, screw holes 97a are formed in the

wiring protection portions

95 and 96. A screw support portion 97b such as a boss portion for screwing a fixing member 97 such as a screw is provided on one side of the main body portion 7 (for example, the first main body portion 54). The direction of screwing the

wiring protection portions

95 and 96 to the main body portion 7 is preferably set to the third direction 4 (from the left side of the third direction 4). The

wiring protection units

95 and 96 may be attached to the main body 7 after the wiring is provided to the main body 7. Alternatively, the

wiring protection units

95 and 96 may be attached to the main body 7 before the wiring is provided, and then the wiring may be provided along the

wiring protection units

95 and 96.

Specifically, as shown in fig. 9, the first wiring protection unit 95 on the front side is provided at a position above the trigger switch 9 so as to be able to cover and protect the female connectors 71g to 71i and the wirings extending from the female connectors 71g to 71i, which are attached to the connector connection portions 94a to 94c (fig. 7) provided between the torsion portion 25 and the trigger switch 9 in the interior of the main body portion 7, from the third direction 4 (left side). As shown in the partially enlarged view of fig. 10, the trigger switch 9 is surrounded on the front side and the lower side by the trigger protector 9a, and a slide portion 9b for guiding the forward and backward movement of the trigger switch 9 is provided at a position which becomes a lower edge portion of the main body portion 7 (for example, the first main body portion 54) within the installation range of the trigger protector 9 a. The first wiring protection unit 95 is attached above the slide unit 9 b.

The first wiring protection portion 95 forms a substantially closed wiring path with the main body portion 7 when attached to the main body portion 7, and as shown in the component views of fig. 11(a) to (d), is formed as a member having a substantially C-shaped or U-shaped cross section having a lower surface portion (first surface portion) 95a, an upper surface portion (second surface portion) 95b, and a side surface portion 95C connecting the lower surface portion 95a and one side portion (left side portion) of the upper surface portion 95 b. The first wiring protection portion 95 extends in the substantially front-rear direction (the first direction 2) over substantially the entire region of the installation range of the trigger protector 9a, and has

open portions

95d and 95e formed between the front and rear end portions and the main body portion 7. The lower surface portion 95a and the other side portion (right side portion) of the upper surface portion 95b are vertically spaced apart from each other and are in an open state. At least the lower surface portion 95a may have a portion which enters the upper side of the sliding portion 9b at the lower edge portion of the body portion 7 and overlaps the sliding portion 9b vertically at the other side portion. Other configurations of the first wiring protection unit 95 will be described later.

As shown in fig. 1, the rear second wiring protection portion 96 is provided substantially along the lower edge portion of the rear portion of the main body portion 7 so as to protect (or press) a portion of a wiring (power supply wiring 38 or the like) extending downward from the rear portion of the substrate (main substrate) 32 and winding upward substantially along the rear end portion of the main body portion 7 (for example, the first main body portion 54), which is mainly inverted from the lower side to the upper side, so that the wiring does not protrude outward of the main body portion 7 (the third direction 4 (left side), the first direction 2 (rear side), or the like). The second wiring protection portion 96 is formed as a member having a lower surface portion (first surface portion) 96a and a side surface portion 96b rising upward from one side portion of the lower surface portion 96a to become an upright wall, the cross section of which is substantially L-shaped or J-shaped, so as to form an upwardly open wiring path between the second wiring protection portion 96 and the main body portion 7, while forming an upright wall capable of restraining wiring from the left side when the second wiring protection portion is attached to the main body portion 7, as shown in the component diagrams of fig. 13(a) to (c). The second wiring protection portion 96 extends in the front-rear direction (first direction 2) substantially along the recess 66 and a portion on the rear side thereof. At least the lower surface portion 96a may have a portion that enters the upper side of the lower edge portion of the body portion 7 at the other side portion and overlaps the lower edge portion vertically. Other configurations of the second wiring protection portion 96 will be described later.

(10) As shown in fig. 1, the

wiring protection units

95 and 96 may include

rotation restricting units

98 and 99 that restrict rotation of the

wiring protection units

95 and 96 between the

wiring protection units

95 and 96 and the main body 7.

Here, the

rotation restricting portions

98 and 99 are used to restrict the rotation of the

wiring protecting portions

95 and 96 so as not to rotate together in the screw fastening direction (for example, clockwise direction) of the fixing member 97 when the

wiring protecting portions

95 and 96 are fixed to the main body portion 7 (for example, the first main body portion 54) by the fixing member 97 such as a screw. The

rotation restricting portions

98, 99 are preferably provided at positions away from the screw fastening position of the fixing member 97.

Specifically, as shown in fig. 9, screw hole 97a for attachment of first wiring protection unit 95 is provided at a position forward of the central portion in the front-rear direction (first direction 2) of upper surface 95 b. The rotation restricting portion 98 of the first wiring protector 95 includes a rotation restricting recess 98a provided at a position rearward of the central portion of the upper surface portion 95b in the front-rear direction, and a rotation restricting projection 98b projecting from the main body 7 (e.g., the first main body 54) toward the rotation restricting recess 98 a. When the first wiring protection portion 95 is provided on the main body portion 7, the rotation restriction concave portion 98a is fitted to the rotation restriction convex portion 98b, and rotation restriction is performed at the time of screwing of the fixing member 97. The rotation restricting concave portion 98a may be formed as a hole portion such as a pin hole provided in the first wiring protection portion 95, and the rotation restricting convex portion 98b may be formed as a protruding portion such as a pin protruding from the main body portion 7. The hole may be formed as a protruding portion protruding upward from the upper surface portion 95b of the first wiring protection portion 95, for example. The rotation restricting convex portion 98b can be provided to protrude leftward (in the third direction 4) from a position corresponding to the hole portion of the main body portion 7 (for example, the first main body portion 54).

As shown in fig. 12, screw hole 97a for attaching second wire protection portion 96 is provided at a substantially central portion in the front-rear direction of second wire protection portion 96. This position is located on the front side of the wiring protected by the second wiring protection unit 96. A cylindrical covering portion 99c (fig. 13) may be provided around screw hole 97a so that fixing element 97 such as a screw does not directly contact the wiring. The rotation restricting portion 99 for the second wiring protection portion 96 includes a protruding piece 99a protruding substantially forward from the distal end portion of the second wiring protection portion 96, and a rotation restricting rib 99b protruding leftward (third direction 4) from the main body portion 7. The rib 99b is formed on the upper side of the inner wall surface 34 along the inner wall surface 34 of the lower edge portion of the main body 7 with a gap substantially equal to the thickness of the protruding piece 99a so that the protruding piece 99a can be inserted and held (or held between) and the lower edge portion of the main body 7 when the second wiring protector 96 is provided to the main body 7. The rib 99b and the lower edge of the body 7 constitute a holding portion capable of holding the protruding piece 99 a. When the second wiring protector 96 is provided to the main body 7, the holding projecting piece 99a is sandwiched between the rib 99b and the lower edge of the main body 7, and rotation is restricted when the fastener 97 is screwed.

(11) Next, another structure of the first wiring protection unit 95 will be described.

(a) As shown in fig. 9 (to fig. 11), a sensor 101 for detecting vertical rotation of the lower curl guide 22 about the curl guide shaft 24 is provided around the distal end of the first wire protection portion 95. The sensor 101 can be, for example, a push button switch. The sensor 101 is housed in a position provided at the front upper portion of the trigger protector 9 a. Further, the first wiring protection portion 95 may be provided with a pressing portion 102 (sensor pressing) around the distal end portion for preventing the sensor 101 from coming off the body portion 7. The pressing part 102 is formed as an engagement part that presses (engages and holds) the left surface of the sensor 101 from the left side. The locking portion is formed by providing a protruding portion having a length reaching the left surface of the sensor 101 at the distal end portion of the first wiring protection portion 95. By providing the convex portion, the lower surface portion 95a and the upper surface portion 95b have a stepped shape or a notched shape at the tip end portion of the first wiring protection portion 95, and the sensor 101 can be pressed by the stepped shape or the notched shape at the tip end portion. By providing the pressing portion 102 in the first wiring protection portion 95 in this manner, the sensor 101 can be prevented from coming off the main body portion 7 (or the upper front portion of the trigger protector 9 a). Alternatively, the sensor 101 can be held in a stable state between the main body portion 7 and the pressing portion 102 by fixing the first wiring protection portion 95 to the main body portion 7.

(b) The first wire protection unit 95 may be provided with a cross-sectional enlarged portion 105 for preventing abrupt bending of the protected wire. In the present embodiment, the wires extending from the female connectors 71g to 71i in the third direction 4 (left direction) are largely reversed immediately after the wires are wound in the right direction, and are guided to the back side portion (right side of the board housing 33) of the main body portion 7 (for example, the first main body portion 54) through the front side of the front side portion of the board housing 33. In this case, when the wiring is bent excessively sharply, there is a possibility that a failure such as disconnection of the wiring may occur. Therefore, in order to maintain the bent portion of the wiring in a more gentle shape, the cross section of the first wiring protection portion 95 is enlarged in the third direction 4 at the bent portion of the wiring and its periphery to form an enlarged cross section portion 105. The cross-section enlarging portion 105 can be formed to have a desired size within the width of the body portion 7 in the third direction 4. In the present embodiment, the cross-section-enlarged portion 105 has a shape in which the cross section of the first wiring protection portion 95 is enlarged leftward as it goes rearward. The position and shape of the cross-section enlarged portion 105 of the first wiring protection portion 95 can be appropriately changed in accordance with the bent shape of the wiring. By providing the expanded cross-section portion 105 in the first wiring protection portion 95 in this manner, the protected wiring can be reliably guided and protected while preventing abrupt bending of the wiring.

(c) As shown in fig. 10, a shape correction unit 107 capable of holding the first wiring protection unit 95 in a regular shape may be provided between the first wiring protection unit 95 and the main body unit 7 (for example, the first main body unit 54). For example, when the first wiring protection unit 95 is shrunk and deformed after being formed, the shape correction unit 107 is configured to restore the first wiring protection unit 95 to a normal shape and mount the first wiring protection unit 95 to the main body portion 7 without hindrance. Specifically, since the first wiring protection portion 95 has a substantially C-shaped or U-shaped cross section taken along a plane perpendicular to the first direction 2 (front-rear direction), the space between the upper surface portion 95b and the other side portion (right side portion) of the lower surface portion 95a is easily closed in the vertical direction by the contraction deformation, and therefore the shape correction portion 107 can be used to open and restore the closed first wiring protection portion 95 in the vertical direction. Since the first wiring protection unit 95 is easily closed by shrinkage deformation particularly at the front and rear end portions and the position of the cross-section enlarged portion 105, the shape correction unit 107 is preferably provided at least at any portion around the front and rear end portions and around the cross-section enlarged portion 105. In the present embodiment, the shape correction unit 107 is provided in a portion on the rear end side where the cross-section enlarged portion 105 is provided, or the like.

Specifically, the shape correcting unit 107 is formed as a protruding portion such as a rib 107a provided in the main body portion 7 to open the first wiring protecting unit 95. The rib 107a abuts against the upper surface around the rear end of the lower surface 95a of the first wiring protection portion 95, thereby widening the first wiring protection portion 95 without biting into the wiring. The abutting rib portion 107a extends leftward (third direction 4) from the body portion 7. In contrast, a rib support portion 107b whose surface abuts against the abutting rib 107a may be provided as the shape correction portion 107 at a portion on the rear end side of the lower surface portion 95a of the first wiring protection portion 95 as necessary. In the present embodiment, the rib supporting portion 107b is formed as a protruding piece protruding rearward from the lower surface portion 95 a. The rib support portion 107b may be formed thicker than the other portions of the first wiring protection portion 95 in order to finely adjust the abutting position with respect to the abutting rib portion 107a, to secure a required strength, and the like.

In this way, by providing the shape correction unit 107 between the first wiring protection unit 95 and the main body 7 (for example, the first main body 54), and by providing the first wiring protection unit 95 in the main body 7 and making the rib support portion 107b abut against the abutment rib 107a, the first wiring protection unit 95 that has been shrunk and deformed can be restored (opened) to a normal shape, and (the lower surface portion 95a of) the first wiring protection unit 95 can be accommodated in a predetermined position of the main body 7. Since the rotation restricting unit 98 serves as a mounting position reference for the upper surface portion 95b of the first wiring protection unit 95 and also functions as the shape correction unit 107, the upper surface portion 95b is provided at a correct position.

(12) Other configurations of the second wiring protection unit 96 will be described below.

As shown in fig. 12, an anti-sink portion 109 capable of preventing the second wiring protective portion 96 from sinking into the main body portion 7 may be provided between the main body portion 7 (for example, the first main body portion 54) and the second wiring protective portion 96. The second wiring protection portion 96 sinks due to the following: when the second wiring protection portion 96 is provided in the main body portion 7, when one side (front side or rear side) in the front-rear direction (first direction 2) of the second wiring protection portion 96 is lifted to the front side (left side) in the third direction 4 by the restoring force due to the wiring that is pressed and deflected by the second wiring protection portion 96, the other side (rear side or front side) is pressed into the back side (right side) in the third direction 4 of the main body portion 7. The sinking prevention unit 109 may be formed as a stopper 109b or a displacement restricting unit provided in the body 7 at the front and rear ends of the second wiring protection unit 96 and adapted to receive the front and rear ends of the second wiring protection unit 96 in the third direction 4. The stopper 109b may be formed to restrict the front end portion and the rear end portion of the second wiring protection portion 96 so as not to enter a rib, a protrusion, or the like of a predetermined amount or more toward the back side in the third direction 4. The rib and the protrusion for stopping are provided to protrude leftward (in the third direction 4) from the main body 7 at a height that does not reach the rear side of the position where the second wiring protection portion 96 is correctly provided. In contrast, at least one of the front and rear end portions of the second wiring protection portion 96 can be provided with a support portion 109a for stably receiving the front and rear stopper portions 109b in the third direction 4. In the present embodiment, the front support portion 109a is formed in a portion (side surface) on the main body portion 7 (e.g., the first main body portion 54) side of the protruding piece portion 99a as the rotation restricting portion 99. The front-side intrusion prevention portion 109 is formed integrally with the rib 99b of the rotation restriction portion 99. The rear support portion 109a is formed as a cutout portion formed in the lower surface portion 96 a.

The operation of this example will be described below.

The spool 13 around which the binding wire 6 is wound is attached to the attachment portion 14, and the main switch 36 is turned on. In this state, the tip of the body portion 7 is directed toward the reinforcing bar 5, the reinforcing bar 5 is inserted between the upper and lower curl guides 21 and 22, and the trigger switch 9 is pulled. Thereby, the binding wire conveying part 18 operates, and the binding wire 6 is pulled out from the drum 13 and conveyed to the front side of the main body part 7. The binding wire 6 transferred to the front side of the body portion 7 is curled by the curl guides 21, 22 and guided to surround the reinforcing bar 5 for one or more turns. Thereafter, the ring-shaped binding wire 6 wound around the reinforcing bars 5 is twisted by the twisting portion 25 to reduce the ring diameter, thereby binding the reinforcing bars 5.

The electric tool such as the binding machine 1 described above is provided with a driving unit such as a motor, various components such as a sensor and an LED, a board 32 on which the control unit 40 is mounted, connectors 71a to 71c for electrically connecting these components, and the like with respect to the main body portion 7. Further, if the connectors 71a to 71c are simply press-fitted into the main body 7 when the wires 72a to 72c are wound, the ease of assembly and maintenance of the main body 7 are deteriorated.

< effect > therefore, by forming the above-described structure in the present embodiment, the following effect can be obtained.

In the state where the plurality of connectors 71a to 71c are accommodated and held in the accommodating portion 46, (effect 1) the accommodating portion 46 is fixed to the body portion 7. This can improve the ease of assembly and maintenance of the plurality of connectors 71a to 71c to the main body 7. Since the plurality of connectors 71a to 71c are collectively housed in the housing portion 46, the housing space to be secured in the main body portion 7 for housing the plurality of connectors 71a to 71c can be reduced, and the size of the main body portion 7 can be reduced. Since the receiving portion 46 is fixed to the body portion 7, the connectors 71a to 71c received in the receiving portion 46 are less likely to vibrate due to vibration or the like, and the connectors 71a to 71c are less likely to be damaged, so that the quality performance of the electric power tool can be improved.

(effect 2) the housing portion 46 is disposed on the rear side of the drive portion, that is, on the opposite side of the output shaft of the torsion motor 27. Accordingly, the portion of the electric power tool that realizes the function as a tool (the torsion portion 25 or the like in the case of the binding machine 1) can be disposed on the front side of the main body portion 7, the driving portion can be disposed on the rear side of the main body portion 7, or the board 32 and the driving portion can be disposed close to each other, while the accommodating portion 46 is disposed in the rear space 42 of the torsion motor 27, whereby the free space on the rear side of the torsion motor 27 can be effectively used. Further, since the distances between the various components, the board 32, and the connectors 71a to 71c are shortened, the connectors 71a to 71c can be easily arranged and wound with respect to the main body 7. Therefore, the size of the body portion 7 can be reduced, and the operability of the electric power tool can be improved.

(effect 3) the plurality of chambers 82a to 82c are provided inside the housing portion 46. Thus, the connectors 71a to 71c can be housed in the plurality of chambers 82a to 82c, or the plurality of connectors 71a to 71c can be individually housed and fixed, and therefore, the ease of assembly and maintenance of the connectors 71a to 71c to the housing portion 46 can be improved. The plurality of chambers 82a to 82c are partitioned by the

partitions

81a and 81b, so that the plurality of connectors 71a to 71c do not interfere with each other inside the housing portion 46. Therefore, the plurality of connectors 71a to 71c are suppressed from being vibrated by vibration or the like, and the connectors 71a to 71c are less likely to be damaged, so that the quality performance of the electric power tool can be improved.

(effect 4) the shape of the plurality of chambers 82a to 82c is made to correspond to the shape of the plurality of connectors 71a to 71c that are housed in the chambers. Therefore, the connectors 71a to 71c are individually fitted into the chambers 82a to 82c, and the connectors 71a to 71c are not vibrated by vibration or the like, so that the connectors 71a to 71c are less likely to be damaged, and the quality performance of the electric power tool can be improved. The plurality of chambers 82a to 82c are formed in different shapes corresponding to the shapes of the connectors 71a to 71 c. Therefore, since the plurality of connectors 71a to 71c having different shapes can be used, erroneous assembly of the connectors 71a to 71c can be prevented.

(effect 5) the housing portion 46 is fixed to the side

inner walls

85, 86 of the body portion 7 while being spaced apart from each other. Second receiving

portions

87, 88 are formed between the receiving portion 46 and the side

inner walls

85, 86. Thus, the

second housing portions

87 and 88 can hold the wires (the power supply wire 38, the signal wire 39, and the like) provided inside the main body portion 7. Further, since the connectors 71a to 71c (the wires 72a to 72c having the connectors 71a to 71c) and the other wires can be separated into the inside and the outside of the housing portion 46 and held in a layered manner, the ease of assembly and maintenance of the connectors 71a to 71c and the wires to the main body portion 7 can be improved.

(effect 6) the wire holding portion 91 is provided on the

outer surfaces

79 and 80 of the housing portion 46 facing the side

inner walls

85 and 86 of the main body portion 7. In particular, the second outer surface 80 of the housing portion 46 is provided with a wire holding portion 91. Thus, the wiring (the power supply wiring 38, the signal wiring 39, and the like) and the connectors 71a to 71c (the wirings 72a to 72c having the connectors 71a to 71c) can be accommodated and held in the wiring holding section 91 while being separated into the inside and the outside of the accommodation section 46. In the electric power tool of the present embodiment, the second receiving portion 87, the receiving portion 46, and the wiring holding portion 91 are provided in the width direction of the main body portion 7, thereby forming a 3-layer receiving space. Further, since the connectors 71a to 71c can be held by the housing portion 46 and the wires (the power supply wire 38, the signal wire 39, and the like) can be held by the second housing portion 87 and the wire holder 91, the space in the main body portion 7 can be effectively used, and the main body portion 7 can be made more compact. By housing the connectors 71a to 71c and the wires in the above manner, the ease of assembly and maintenance of the connectors 71a to 71c and the wires to the main body 7 can be improved. In the electric power tool of the present embodiment, the connectors 71a to 71c, the wires, and the like are accommodated in the 3-layer space provided in the width direction of the main body 7, but for example, the accommodating portion 46 may be provided close to the side inner wall 85 of the main body 7, and the second accommodating portion 87 may not be provided between the accommodating portion 46 and the side inner wall 85, and the accommodating portion 46 and the wire holding portion 91 may have a two-layer structure.

(effect 7) the housing portion 46 may be formed integrally with the inside of the main body portion 7. This eliminates the need to form the housing portion 46 by a separate member, and improves the ease of assembly of the connectors 71a to 71c to the main body portion 7.

In effect 8, the body 7 may be provided with a plurality of openings penetrating between the inside and the outside of the body 7, and the plurality of openings may be formed as the connector coupling portions 94a to 94c having shapes corresponding to the plurality of connectors 71d to 71i, respectively. This enables the use of a plurality of connectors 71d to 71i having different shapes, and prevents erroneous assembly of the connectors 71d to 71i to the connector coupling portions 94a to 94 c. The connectors 71d to 71i can be directly held by the body 7 by forming the plurality of openings provided in the body 7 as the connector coupling portions 94a to 94 c. Therefore, the connectors 71d to 71i are configured to have a high resistance to vibration, and the ease of assembly and maintenance of the connectors 71d to 71i to the main body 7 can be improved. Further, the use of the connector coupling portions 94a to 94c makes it possible to easily provide the wires 72a to 72c penetrating between the inside and the outside of the body portion 7.

In effect 9, the main body 7 may have

wiring protection units

95 and 96 for protecting the wiring. Thus, the wires disposed inside the main body 7 can be protected by the

wire protection units

95 and 96. The

wiring protection units

95 and 96 can also function as wiring guides that guide the wiring to a correct path inside the main body 7, maintain the wiring in an aligned state, or wind the wiring so that the wiring does not become unreasonably bent and broken. Further, for example, by providing the

wiring protection portions

95 and 96 substantially along the peripheral edge portion of the main body portion 7, it is possible to prevent the wiring from being pinched into the main body portion 7 when (the first main body portion 54 and the second main body portion 55 of) the main body portion 7 is closed. Further, for example, by providing the wire protection unit 95 in the vicinity of the trigger switch 9, it is possible to prevent the wire from being caught by the sliding portion 9b of the trigger switch 9 and the like. Similarly, by providing the wiring protector 96 at the rear side of the recess 66 with respect to the recess 66, it is possible to easily perform winding of the wiring at a narrow portion in the rear part of the main body 7. Further, the

wiring protection units

95 and 96 can prevent the wiring from moving inside the main body 7.

(effect 10) the

wiring protection units

95 and 96 may have

rotation restricting units

98 and 99 for restricting rotation of the

wiring protection units

95 and 96 with the main body unit 7. Thus, when the

wiring protection units

95 and 96 are attached, the

rotation restricting units

98 and 99 restrict the rotation of the

wiring protection units

95 and 96 with respect to the main body 7, and the positional displacement of the

wiring protection units

95 and 96 can be prevented. Therefore, the

wiring protection units

95 and 96 can be easily attached.

Claims

1. An electric power tool is provided with:

a drive unit that generates drive force using electric power and various components that function using electric power;

a substrate on which a control unit for controlling the drive unit and the various components is mounted;

a plurality of connectors that connect a plurality of wires extending from the driving unit and the various components to a plurality of wires extending from the substrate;

a main body portion in which the driving portion, the various components, the substrate, and the plurality of connectors are provided; and

a housing portion that houses the plurality of connectors and is fixed to the main body portion,

the housing portion is composed of at least a container portion having an opening portion on one surface thereof and a lid portion for closing the opening portion of the container portion,

the container portion has a first attachment piece and a second attachment piece for attachment to the body portion, and the lid portion has a third attachment piece that is fastenable together with the first attachment piece.

2. The power tool according to claim 1,

the driving part includes a motor having an output shaft protruding from one end side,

the housing portion is disposed on an opposite side of the motor from the output shaft.

3. The power tool according to claim 1 or 2, wherein,

the interior of the housing portion is divided into a plurality of chambers,

the plurality of chambers are configured to be able to house the connector.

4. The power tool according to claim 3,

the plurality of chambers respectively accommodate the plurality of connectors accommodated therein.

5. The power tool according to claim 4,

the plurality of chambers are each configured in a shape corresponding to the shape of the connector to be housed.

6. The power tool according to claim 3,

the plurality of chambers are formed in different shapes.

7. The power tool according to claim 1,

the housing portion has a wire holding portion capable of holding a wire on an outer surface facing an inner wall of a side surface of the main body portion.

8. The power tool according to claim 1,

the housing portion is fixed so as to be separated from the side inner wall of the main body portion.

9. The power tool according to claim 8,

the housing section includes a first outer surface facing the side inner wall and a second outer surface located on a side opposite to the first outer surface, and the second outer surface is provided with a wiring holding section capable of holding wiring.

10. The power tool according to claim 1,

the housing portion is integrally formed with the interior of the main body portion.

11. The power tool according to claim 1,

the body portion has a plurality of openings penetrating between the inside and the outside, and the plurality of openings are formed in shapes corresponding to the shapes of the held connectors so as to be able to hold the connectors, respectively.

12. The power tool according to claim 1,

the main body is provided with a wiring protection unit capable of protecting the wiring.

13. The power tool according to claim 12,

the wiring protection unit includes a rotation restricting unit that restricts rotation of the wiring protection unit between the wiring protection unit and the main body unit.