Power tool

Abstract

To provide an electric tool configured so that a radio wave of a radio communication substrate can be easily transmitted to an external device, when used while making a shaft direction of a driving shaft to be parallel to a horizontal direction or a vertical direction.SOLUTION: Electric tools 1 and 1a comprise body parts 21, battery pack mounting parts 23 and radio communication substrates 5 and 5a. The body part 21 has a driving shaft 4 that is rotated by a driving part 3. The battery pack mounting part 23 is attachably and detachably mounted on a battery pack B1 that supplies currents for driving the driving part 3. The radio communication substrates 5 and 5a are arranged in the battery pack mounting parts 23, which output radio waves for performing radio communication with an external device C1. A polarization direction D1 of the radio waves can be decomposed into horizontal components which are parallel in a horizontal direction X1 and vertical components which are parallel in a vertical direction X2, where the shaft direction D2 of the driving shaft 4 is the horizontal direction X1.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates generally to power tools, and more particularly to a power tool including a wireless communication board for communicating with an external device. [Background technology]

[0002] Patent Document 1 discloses a battery-operated portable power tool having an upgrade module that can be inserted between a pistol-shaped housing and a battery unit and includes an accessory that adds a transceiver to the tool for wireless communication with a fixed control unit. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 2009-515718 Summary of the Invention [Problem to be solved by the invention]

[0004] In the battery-powered portable power tool (electric tool) described above, when the axial direction of the output shaft (drive shaft) of the battery-powered portable power tool is horizontal, the communication board of the transceiver is generally arranged parallel or perpendicular to the axial direction. However, when the wireless communication board is arranged parallel or perpendicular to the axial direction, there is a problem that when the axial direction of the output shaft is set parallel to the horizontal or vertical direction, radio waves from the wireless communication board have difficulty reaching the fixed control unit (external device).

[0005] An object of the present disclosure is to provide an electric power tool in which radio waves from a wireless communication board can easily reach an external device when the axial direction of the drive shaft is parallel to the horizontal or vertical direction. [Means for solving the problem]

[0006] According to an embodiment of the present disclosure, there is provided an electric power tool including a main body, a battery pack attachment portion, and a wireless communication board. The main body is rotated by a drive portion. and a tip portion on which a tip tool is provided. The drive unit has a drive shaft. A battery pack that supplies a current to drive the drive unit is removably attached to the battery pack attachment portion. The wireless communication board is disposed on the battery pack attachment portion and outputs radio waves for wireless communication with an external device. When the axial direction of the drive shaft is horizontal, the polarization direction of the radio waves can be resolved into both a horizontal component that is parallel to the horizontal direction and a vertical component that is parallel to the vertical direction. Effect of the Invention

[0007] According to the present disclosure, when the axial direction of the drive shaft is parallel to the horizontal or vertical direction, there is an advantage that radio waves from the wireless communication board can easily reach an external device. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is an explanatory diagram illustrating the polarization direction of radio waves output from a wireless communication board when the axial direction of a drive shaft is horizontal in a power tool according to this embodiment. [Diagram 2] FIG. 2 is an explanatory diagram illustrating the polarization direction of radio waves output from a wireless communication board in the power tool when the axial direction of a drive shaft is vertical. [Diagram 3] FIG. 3 is a cross-sectional view of a main part of the power tool. [Figure 4] FIG. 4 is an explanatory diagram illustrating an inclination of the wireless communication board of the power tool. [Diagram 5] FIG. 5 is an explanatory diagram illustrating a state in which a direct wave is diffracted in the power tool. [Figure 6] FIG. 6 is an explanatory diagram illustrating the inclination of the wireless communication board of the electric power tool according to the above modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, electric power tools according to embodiments will be described with reference to the drawings. However, the following embodiment is merely one of various embodiments of the present disclosure. The following embodiment can be modified in various ways depending on the design, etc., as long as the object of the present disclosure can be achieved. Also, each figure described in the following embodiment is a schematic diagram, and the size and thickness ratios of each component in the figure do not necessarily reflect the actual dimensional ratios.

[0010] (Embodiment) (1) Overview Hereinafter, an overview of a power tool 1 according to this embodiment will be described with reference to FIGS.

[0011] 1 and 2, the power tool 1 according to this embodiment includes a main body 21, a battery pack attachment section 23, and a wireless communication board 5. The main body 21 has a drive shaft 4 that is rotated by a drive unit 3. A battery pack B1 that supplies a current to drive the drive unit 3 is detachably attached to the battery pack attachment section 23. The wireless communication board 5 is disposed in the battery pack attachment section 23, and outputs radio waves for wireless communication with an external device C1.

[0012] In this embodiment, when the axial direction D2 of the drive shaft 4 is the horizontal direction X1 as shown in Fig. 1, the polarization direction D1 of the radio wave can be resolved into both a horizontal component parallel to the horizontal direction X1 and a vertical component parallel to the vertical direction X2. When the axial direction D2 of the drive shaft 4 is the vertical direction X2 as shown in Fig. 2, the polarization direction D1 of such a radio wave can also be resolved into both a horizontal component parallel to the horizontal direction X1 and a vertical component parallel to the vertical direction X2.

[0013] Therefore, when the axial direction D2 of the drive shaft 4 is set parallel to the horizontal direction X1 or the vertical direction X2, the radio waves output from the wireless communication board 5 include a direct wave W1 and a reflected wave W2. The direct wave W1 is a component that reaches the external device C1 directly without being reflected by the floor Y1 or the ceiling Y2. The reflected wave W2 is a component that reaches the external device C1 after being reflected by the floor Y1 or the ceiling Y2.

[0014] From the above, in the power tool 1 of this embodiment, when the axial direction D2 of the drive shaft 4 is used parallel to the horizontal direction X1 or the vertical direction X2, in addition to the direct wave W1, the reflected wave W2 is reflected by the floor Y1 or the ceiling Y2 and reaches the external device C1, thereby improving the probability that the radio waves from the wireless communication board 5 will reach the external device C1 regardless of the position where the external device C1 is placed. That is, in the power tool 1 of this embodiment, when the axial direction D2 of the drive shaft 4 is used parallel to the horizontal direction X1 or the vertical direction X2, there is an advantage that the radio waves from the wireless communication board 5 are more likely to reach the external device C1.

[0015] (2) Detailed configuration (2-1) Overall structure Hereinafter, a detailed configuration of the power tool 1 of this embodiment will be described with reference to FIGS.

[0016] In the following description, as shown in Fig. 3, the axial direction of the drive shaft 4 is defined as the front-rear direction, the side of a tip portion 41 of the drive shaft 4 described later is defined as the front when viewed from the main body 21, and the side of the main body 21 when viewed from the tip portion 41 of the drive shaft 4 is defined as the rear. In addition, in the following description, the direction in which the main body 21 and a grip portion 22 described later are lined up is defined as the up-down direction, the side of the main body 21 when viewed from the grip portion 22 is defined as the top, and the side of the grip portion 22 when viewed from the main body 21 is defined as the bottom. However, these definitions are not intended to define the direction in which the power tool 1 is used.

[0017] 3, the power tool 1 includes a housing 2, a drive unit 3, a drive shaft 4, a wireless communication board 5, a control unit 6, and an operation unit 7. In this embodiment, as an example, the power tool 1 is an impact driver.

[0018] (2-2) Housing The housing 2 accommodates the drive unit 3, at least a part of the drive shaft 4, and the wireless communication board 5. As shown in Fig. 3, the housing 2 has a main body portion 21, a grip portion 22, and a battery pack attachment portion 23. In this embodiment, in the housing 2, the main body portion 21, the grip portion 22, and the battery pack attachment portion 23 are integrally formed.

[0019] (Main body) As shown in FIG. 3, the main body portion 21 accommodates the drive portion 3 and at least a portion of the drive shaft 4.

[0020] The main body 21 has a side portion 211 and two bottom portions 212a and 212b. The side portion 211 has a cylindrical shape. More specifically, the side portion 211 has a cylindrical shape. Each of the two bottom portions 212a and 212b is disposed so as to cover an opening of the cylindrical side portion 211. That is, the main body 21 is a bottomed cylinder. The two bottom portions 212a and 212b have a disk shape. The thickness direction of the two bottom portions 212a and 212b is along the front-rear direction. One of the two bottom portions 212a and 212b, the bottom portion 212a, has a through hole 213. In this embodiment, the through hole 213 is provided at the center of the bottom portion 212a. The drive shaft 4 is passed through the through hole 213.

[0021] (Grip section) As shown in Fig. 3, the grip portion 22 protrudes from the main body portion 21. A protruding direction D3 shown in Fig. 3 is a direction in which the grip portion 22 protrudes from the main body portion 21. In this embodiment, the protruding direction D3 is not parallel to the vertical direction but is inclined forward with respect to the vertical direction. As shown in Fig. 5, the operator A1 can hold the power tool 1 by gripping the grip portion 22.

[0022] 3, the grip portion 22 has a long and narrow shape in the protruding direction D3 such that the protruding direction D3 is the longitudinal direction of the grip portion 22. With the grip portion 22 having such a shape, the worker A1 can easily hold the grip portion 22.

[0023] The battery pack attachment portion 23 is provided on the grip portion 22. In this embodiment, the battery pack attachment portion 23 is provided on the lower end portion of the grip portion 22. In other words, the battery pack attachment portion 23 is provided on the grip portion 22 such that the main body portion 21, the grip portion 22, and the battery pack attachment portion 23 are aligned in the protruding direction D3.

[0024] (Battery pack attachment part) The battery pack attachment section 23 has a rectangular parallelepiped shape as shown in Fig. 3. A rechargeable battery pack B1 is detachably attached to the lower part of the battery pack attachment section 23. The power tool 1 operates using the battery pack B1 as a power source. That is, the battery pack B1 is a power source that supplies a current to drive the drive section 3. The battery pack B1 is not a component of the power tool 1. However, the power tool 1 may include the battery pack B1. The battery pack B1 includes a battery pack configured by connecting a plurality of secondary batteries (e.g., lithium ion batteries) in series, and a case that houses the battery pack.

[0025] The battery pack attachment portion 23 accommodates the wireless communication board 5 .

[0026] (2-3) Drive unit The driving unit 3 is disposed in the main body 21 and drives the driving shaft 4. The driving unit 3 is, for example, a brushless motor. The driving unit 3 includes a rotor having a rotating shaft and a permanent magnet, and a stator having a coil. Electromagnetic interaction between the permanent magnet and the coil causes the rotor to rotate relative to the stator.

[0027] Moreover, the driving unit 3 is a servo motor. The torque and rotation speed of the driving unit 3 change according to the control by the control unit 6 (servo driver). More specifically, the control unit 6 controls the operation of the driving unit 3 by feedback control that controls the torque and rotation speed of the driving unit 3 so as to approach target values.

[0028] (2-4) Drive shaft The drive shaft 4 is rotated by the drive unit 3. More specifically, the drive shaft 4 is mechanically connected to the rotating shaft of the drive unit 3, and the drive shaft 4 rotates as the rotating shaft of the drive unit 3 rotates.

[0029] The drive shaft 4 is a columnar body. The drive shaft 4 in this embodiment is cylindrical. At least a part of the drive shaft 4 protrudes from the through hole 213 of the main body 21. More specifically, a front part of the drive shaft 4 protrudes from the through hole 213 of the main body 21.

[0030] The drive shaft 4 has a tip portion 41 on which a tool bit is provided. The tip portion 41 is an end portion of the drive shaft 4 that protrudes from the through hole 213 of the body portion 21. In other words, the tip portion 41 is a front end portion of the drive shaft 4. The drive shaft 4 is rotated together with the tool bit by the drive unit 3.

[0031] In this embodiment, the tip part 41 is provided with a tool tip that can be detachably attached via a chuck. The tip part 41 may be provided directly with a tool tip that can be detachably attached. The tip part 41 may also be formed integrally with the tool tip. The tool tip is, for example, a driver bit. The tool tip is rotated while engaged with a screw (bolt, screw, etc.) to be worked on, thereby enabling work such as tightening or loosening the screw.

[0032] (2-5) Wireless communication board The wireless communication board 5 outputs radio waves for wireless communication with the external device C1. In the present disclosure, "wireless communication" refers to communication using radio waves as a medium, and includes Bluetooth (registered trademark) and Wi-Fi (registered trademark). The wireless communication board 5 transmits work information by wireless communication. That is, the wireless communication board 5 is capable of transmitting work information to the external device C1. In the present disclosure, the "work information" refers to information related to a work using the power tool 1, for example, information related to the work content when working using the power tool 1. In the case where the power tool 1 is an impact driver as in the present embodiment, the work information is information related to the work content of a screw tightening work, such as the tightening torque, the number of screws tightened, the work time, and the remaining battery level. The wireless communication board 5 may receive work information by wireless communication. That is, the wireless communication board 5 may be capable of receiving work information from the external device C1.

[0033] 3, the wireless communication board 5 is a board having a communication module 53 capable of wireless communication. The communication module 53 is provided on one of two main surfaces 51 of the wireless communication board 5. In this embodiment, of the two main surfaces 51, the main surface 51 on which the communication module 53 is provided is referred to as a first main surface 51a, and the other main surface 51 (i.e., of the two main surfaces 51, the main surface 51 on which the communication module 53 is not provided) is referred to as a second main surface 51b.

[0034] The wireless communication board 5 is disposed in the battery pack attachment portion 23 as shown in Fig. 3. More specifically, the wireless communication board 5 is disposed such that the main surface 51 of the wireless communication board 5 intersects obliquely with the axial direction D2 when viewed from a predetermined direction (perpendicular to the paper surface of Fig. 3) that is perpendicular to each of the protruding direction D3 and the axial direction D2. More specifically, the wireless communication board 5 is disposed such that the first main surface 51a and the second main surface 51b of the wireless communication board 5 intersect obliquely with the axial direction D2 when viewed from the predetermined direction. In other words, the wireless communication board 5 is disposed such that the thickness direction of the wireless communication board 5 intersects obliquely with the axial direction D2 when viewed from the predetermined direction.

[0035] More specifically, the inclination of the wireless communication board 5 with respect to the axial direction D2 will be described with reference to Fig. 4. When viewed from a predetermined direction (perpendicular to the paper surface of Fig. 4), the wireless communication board 5 has a pair of ends in a direction in which the wireless communication board 5 obliquely intersects with the axial direction D2, the first end 52a being an end located on the drive shaft 4 side, and a second end 52b being an end different from the first end 52a. The wireless communication board 5 is disposed such that the first end 52a is closer to the tip end 41 than the second end 52b in the axial direction D2. In this case, the normal direction of the first main surface 51a and the second main surface 51b is the rear-upper direction of the power tool 1.

[0036] That is, as shown in Fig. 4, when viewed from a predetermined direction (a direction perpendicular to the paper surface of Fig. 4), of the two angles formed by the main surface 51 of the wireless communication board 5 and the axial direction D2, the smaller angle θ is greater than 0 degrees and smaller than 90 degrees. The dashed line L1 shown in Fig. 4 is a straight line parallel to the axial direction D2. In this embodiment, when viewed from the predetermined direction, of the two angles formed by one of the first main surface 51a and the second main surface 51b of the wireless communication board 5 and the axial direction D2, the smaller angle θ is greater than 0 degrees and smaller than 90 degrees.

[0037] The wireless communication board 5 outputs radio waves polarized in a direction parallel to the first main surface 51a and the second main surface 51b when viewed from a predetermined direction (perpendicular to the paper surface of FIG. 4) that is perpendicular to each of the protruding direction D3 and the axial direction D2. That is, as shown in FIG. 4, the polarization direction D1 of the radio waves output by the wireless communication board 5 is a direction parallel to the first main surface 51a and the second main surface 51b when viewed from the predetermined direction. The "polarization direction of radio waves" in the present disclosure is a direction in which the electric field of the radio waves vibrates when the radio waves propagate through space. In this embodiment, the wireless communication board 5 is disposed such that the first main surface 51a and the second main surface 51b of the wireless communication board 5 obliquely intersect with the axial direction D2 when viewed from the predetermined direction, and therefore the polarization direction D1 of the radio waves output by the wireless communication board 5 is a direction in which the wireless communication board 5 obliquely intersects with the axial direction D2.

[0038] As a result, the polarization direction D1 of the radio wave output from the wireless communication board 5 can be resolved into both a horizontal component parallel to the horizontal direction X1 and a vertical component parallel to the vertical direction X2 when the axial direction D2 of the drive shaft 4 is the horizontal direction X1 as shown in Fig. 1. Also, the polarization direction D1 of the radio wave can be resolved into both a horizontal component parallel to the horizontal direction X1 and a vertical component parallel to the vertical direction X2 when the axial direction D2 of the drive shaft 4 is the vertical direction X2 as shown in Fig. 2.

[0039] (2-6) Operation section As shown in FIG. 3, the operating unit 7 protrudes from the grip portion 22. The operating unit 7 receives operations for controlling the rotation of the rotating shaft of the drive unit 3. The drive unit 3 can be switched on and off by pulling the operating unit 7. In addition, the rotation speed of the rotating shaft can be adjusted by the pulling amount of the operating unit 7. The greater the pulling amount, the faster the rotation speed of the rotating shaft.

[0040] (2-7) Control section The control unit 6 rotates or stops the rotation shaft of the drive unit 3 according to the pulling amount of the operation of pulling the operation unit 7, and also controls the rotation speed of the rotation shaft.

[0041] The control unit 6 includes, for example, a microcontroller. The control unit 6 can change the rotation speed of the drive shaft 4 and the tool tip by changing the rotation speed of the rotation shaft. The control unit 6 changes the rotation speed of the rotation shaft by, for example, changing the power supplied to the drive unit 3.

[0042] (3) Advantages The electric power tool 1 includes a main body 21, a battery pack attachment section 23, and a wireless communication board 5. The main body 21 has a drive shaft 4 that is rotated by a drive unit 3. A battery pack B1 that supplies a current to drive the drive unit 3 is detachably attached to the battery pack attachment section 23. The wireless communication board 5 is disposed on the battery pack attachment section 23 and outputs radio waves for wireless communication with an external device C1. As shown in FIG. 1, when an axial direction D2 of the drive shaft 4 is the horizontal direction X1, the polarization direction D1 of the radio waves can be resolved into both a horizontal component that is parallel to the horizontal direction X1 and a vertical component that is parallel to the vertical direction X2.

[0043] In general, the power tool 1 is often used with the axial direction D2 of the drive shaft 4 parallel to the horizontal direction X1 or the vertical direction X2. As an example, the power tool 1 is used for tightening or loosening screws on a wall, ceiling, floor, etc. According to this configuration, when the power tool 1 is used with the axial direction D2 of the drive shaft 4 parallel to the horizontal direction X1 or the vertical direction X2, the radio waves output by the wireless communication board 5 include a direct wave W1 and a reflected wave W2. The direct wave W1 is a component that reaches the external device C1 directly without being reflected by the floor Y1 or the ceiling Y2. The reflected wave W2 is a component that reaches the external device C1 after being reflected by the floor Y1 or the ceiling Y2. Therefore, when the power tool 1 is used with the axial direction D2 of the drive shaft 4 parallel to the horizontal direction X1 or the vertical direction X2, in addition to the direct wave W1, the reflected wave W2 is reflected by the floor Y1 or the ceiling Y2 and reaches the external device C1, so that the effect of improving the probability that the radio waves of the wireless communication board 5 reach the external device C1 regardless of the position where the external device C1 is placed is achieved. For example, when there is an obstacle between the power tool 1 and the external device C1, even if the direct wave W1 cannot be diffracted by the obstacle and is blocked by the obstacle and does not reach the external device C1, the reflected wave W2 can avoid the obstacle and reach the external device C1. That is, the power tool 1 of this embodiment has an advantage that, when the axial direction D2 of the drive shaft 4 is used in parallel with the horizontal direction X1 or the vertical direction X2, the radio waves from the wireless communication board 5 can easily reach the external device C1.

[0044] The electric power tool 1 further includes a grip portion 22 that protrudes from the main body portion 21 and is provided with a battery pack attachment portion 23. As shown in Fig. 3, the wireless communication board 5 is disposed such that a main surface 51 of the wireless communication board 5 obliquely intersects with the axial direction D2 when viewed from a predetermined direction (a direction perpendicular to the paper surface of Fig. 3) that is perpendicular to both a protruding direction D3 in which the grip portion 22 protrudes from the main body portion 21 and an axial direction D2.

[0045] In electric power tools, the main surface of the communication board is generally arranged to be parallel or perpendicular to the axial direction of the drive shaft. In this case, when the wireless communication board is structured to output radio waves polarized in a direction parallel or perpendicular to the main surface, if the axial direction of the drive shaft is parallel to the horizontal direction X1 or the vertical direction X2 and the power tool is used, the polarization direction of the radio waves will be parallel to either the horizontal direction X1 or the vertical direction X2. As a result, the radio waves of the wireless communication board will be either direct waves or reflected waves, making it difficult to reach an external device. However, according to the configuration of this embodiment, the main surface 51 of the wireless communication board 5 is arranged to cross the axial direction D2 obliquely, so that even if the wireless communication board 5 is structured to output radio waves polarized in a direction parallel or perpendicular to the main surface 51, the polarization direction D1 of the radio waves can be decomposed into both a horizontal component parallel to the horizontal direction X1 and a vertical component parallel to the vertical direction X2 when the axial direction D2 of the drive shaft 4 is horizontal direction X1 and vertical direction X2. In other words, in the power tool 1 of this embodiment, when the power tool 1 is used with the axial direction D2 of the drive shaft 4 parallel to the horizontal direction X1 or the vertical direction X2, there is an advantage that the radio waves from the wireless communication board 5 can easily reach the external device C1, even if the wireless communication board 5 is structured to output radio waves polarized in a direction parallel or perpendicular to the main surface 51.

[0046] 4, in the power tool 1, the wireless communication board 5 has a pair of ends in a direction in which the wireless communication board 5 obliquely intersects with the axial direction D2, a first end 52a which is an end located on the drive shaft 4 side, and a second end 52b which is an end different from the first end 52a, when viewed from a predetermined direction (a direction perpendicular to the paper surface of FIG. 4). The wireless communication board 5 is disposed in the axial direction D2 such that the first end 52a is closer to the tip end 41 than the second end 52b.

[0047] 5, when the operator A1 is present between the power tool 1 and the external device C1 and the power tool 1 is used below the head of the operator A1 in a work site where the floor Y1 and the ceiling Y2 do not easily reflect radio waves, the direct wave W1 can reach the external device C1 by diffracting the body of the operator A1 even if the reflected wave W2 does not reach the external device C1. That is, the power tool 1 of this embodiment has the advantage that the radio waves from the wireless communication board 5 can easily reach the external device C1 when the operator A1 is present between the power tool 1 and the external device C1 and the power tool 1 is used below the head of the operator A1 in a work site where the floor Y1 and the ceiling Y2 do not easily reflect radio waves.

[0048] (4) Variations Modifications of the present embodiment will be listed below. The following modifications may be implemented in appropriate combination.

[0049] As shown in Fig. 4, the wireless communication board 5 of the power tool 1 of this embodiment is disposed such that the first end 52a is closer to the tip end 41 than the second end 52b in the axial direction D2. However, as shown in Fig. 6, the wireless communication board 5a of the power tool 1a may be disposed such that the second end 52b is closer to the tip end 41 than the first end 52a in the axial direction D2.

[0050] In the power tool 1a, similarly to the power tool 1 described above, when viewed from a specific direction (perpendicular to the paper surface of Figure 6) that is perpendicular to both the protrusion direction D3 and the axial direction D2, the smaller of the two angles θa formed by the main surface 51 of the wireless communication board 5a and the axial direction D2 is greater than 0 degrees and less than 90 degrees.

[0051] The power tool 1 of the present embodiment is an impact driver, but is not limited to an impact driver. For example, the type of the power tool 1 may be an impact wrench, a drill driver, a hammer drill, a band saw, a power cutter, a sander, a disc grinder, or the like.

[0052] Although the protruding direction D3 in this embodiment is inclined forward with respect to the vertical direction, it may be parallel to the vertical direction. That is, the direction in which the grip portion 22 protrudes from the main body portion 21 is not limited.

[0053] Although the battery pack B1 of the present embodiment is detachably attached to the battery pack attachment portion 23, it does not have to be detachable from the battery pack attachment portion 23. In other words, the battery pack B1 does not have to be detachable from the power tool 1.

[0054] (summary) The electric power tool (1, 1a) of the first aspect of the embodiment includes a main body (21), a battery pack attachment part (23), and a wireless communication board (5, 5a). The main body (21) has a drive shaft (4) that rotates by a drive part (3). A battery pack (B1) that supplies a current to drive the drive part (3) is detachably attached to the battery pack attachment part (23). The wireless communication board (5, 5a) is disposed on the battery pack attachment part (23) and outputs radio waves for wireless communication with an external device (C1). When the axial direction (D2) of the drive shaft (4) is the horizontal direction (X1), the polarization direction (D1) of the radio waves can be resolved into both a horizontal component that is parallel to the horizontal direction (X1) and a vertical component that is parallel to the vertical direction (X2).

[0055] According to this embodiment, when the axial direction (D2) of the drive shaft (4) is set parallel to the horizontal direction (X1) or the vertical direction (X2), it has the advantage that radio waves from the wireless communication board (5, 5a) can easily reach the external device (C1).

[0056] The electric power tool (1, 1a) according to the second embodiment of the first embodiment further includes a grip portion (22) protruding from the main body portion (21) and provided with a battery pack attachment portion (23). The wireless communication board (5, 5a) is disposed such that a main surface of the wireless communication board (5, 5a) obliquely intersects with the axial direction (D2) when viewed from a predetermined direction perpendicular to both a protruding direction (D3) in which the grip portion (22) protrudes from the main body portion (21) and the axial direction (D2).

[0057] According to this aspect, in the power tool (1, 1a) equipped with the wireless communication board (5, 5a) of a simple structure, when the axial direction (D2) of the drive shaft (4) is used in parallel with the horizontal direction (X1) or the vertical direction (X2), there is an advantage that radio waves from the wireless communication board (5, 5a) can easily reach the external device (C1).

[0058] In the third aspect of the electric power tool (1, 1a) according to the embodiment, in the second aspect, when viewed from a specific direction, the smaller of the two angles (θ, θa) formed between the main surface of the wireless communication board (5, 5a) and the axial direction (D2) is greater than 0 degrees and less than 90 degrees.

[0059] According to this aspect, in the power tool (1, 1a) equipped with the wireless communication board (5, 5a) of a simple structure, when the axial direction (D2) of the drive shaft (4) is used in parallel with the horizontal direction (X1) or the vertical direction (X2), there is an advantage that radio waves from the wireless communication board (5, 5a) can easily reach the external device (C1).

[0060] In the electric power tool (1) according to the fourth aspect of the embodiment, in the second or third aspect, the drive shaft (4) has a tip portion (41) on which a tool tip is provided. The wireless communication board (5) has a pair of ends in a direction in which the wireless communication board (5) obliquely intersects with the axial direction (D2) when viewed from a predetermined direction, the pair of ends being a first end (52a) located on the drive shaft (4) side and a second end (52b) different from the first end (52a). The wireless communication board (5) is disposed such that the first end (52a) is closer to the tip portion (41) than the second end (52b) in the axial direction (D2).

[0061] According to this embodiment, there is an advantage that when the power tool (1) is used below the head of the worker (A1) in a work site where the floor (Y1) and the ceiling (Y2) do not easily reflect radio waves, the radio waves from the wireless communication board (5) can easily reach the external device (C1).

[0062] The above-described embodiment is merely an example of the present invention. Therefore, the present invention is not limited to the above-described embodiment, and various modifications can be made according to the design and the like without departing from the technical concept of the present invention. [Explanation of symbols]

[0063] 1, 1a Power tools 21 Main body 22 Grip section 23 Battery pack attachment section 3 Drive unit 4 Drive shaft 41 Tip 5, 5a Wireless communication board 51 Main surface 52a 1st end 52b 2nd end B1 Battery Pack C1 External device D1 Polarization direction D2 Axial direction D3 Projection direction X1 Horizontal X2 Vertical direction θ, θa angle

Claims

1. A main body portion having a drive shaft that is rotated by a drive unit and includes a tip portion on which a tool tip is provided; a battery pack attachment section to which a battery pack for supplying a current for driving the driving section is detachably attached; a wireless communication board that is disposed in the battery pack attachment portion and outputs radio waves for wireless communication with an external device; When the axial direction of the drive shaft is a horizontal direction, the polarization direction of the radio wave can be decomposed into both a horizontal component parallel to the horizontal direction and a vertical component parallel to the vertical direction. Power tools.

2. a grip portion protruding from the main body portion and provided with the battery pack attachment portion; the wireless communication board is disposed such that a main surface of the wireless communication board obliquely intersects with the axial direction when viewed from a predetermined direction perpendicular to both a protruding direction in which the grip portion protrudes from the main body and the axial direction. The power tool according to claim 1.

3. a smaller angle of two angles formed by the main surface of the wireless communication board and the axial direction when viewed from the predetermined direction is greater than 0 degrees and smaller than 90 degrees; The power tool according to claim 2.

4. The wireless communication board has, as a pair of ends in a direction in which the wireless communication board obliquely intersects with the axial direction when viewed from the predetermined direction, a first end which is an end located on the drive shaft side, and a second end which is an end different from the first end; the wireless communication board is disposed in the axial direction such that the first end is closer to the tip portion than the second end. The power tool according to claim 2 or 3.

Images