Portable processing machine

Abstract

To provide a portable processing machine which has a compact longitudinal length and whose weight balance is good.SOLUTION: A portable processing machine 1 has a handle 3 extending in a longitudinal direction. Either the left or right side of the handle 3 is provided with arrayed blade tools 4. A battery pack 8 is attached to a battery attachment part 3e provided on the underside of a rear part 3b of the handle 3. In the battery pack 8, the longest side is orientated in the left and right direction, and a left and right center of the longest side is positioned on a blade tool 4 side of the left and right center of the handle 3.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a portable processing machine, such as a portable circular saw, a cutter, a groove cutting cutter, and the like. [Background technology]

[0002] The portable circular saw in Patent Document 1 has a handle that extends in the front-rear direction. A battery is attached to the rear surface of the handle by sliding it from above. However, the battery may become large depending on the power supply capacity. In this case, the entire circular saw including the battery becomes large in the front-rear direction.

[0003] The portable circular saw of Patent Document 2 also has a handle extending in the front-rear direction. A disk-shaped cutting tool is attached to the right side of the handle. A battery is attached to the rear underside of the handle by sliding it from the left side. The battery protrudes from the rear of the handle to the left side, and the weight of the battery causes the center of gravity of the entire circular saw to be farther away from the cutting tool. Therefore, there is room for improvement in processing the workpiece with the cutting tool. It is also possible to imagine a case where this structure is used as a left-handed saw. In this case, the cutting tool is located on the left side of the handle, and the battery is attached to the rear of the handle from the right side. However, in this case, the user generally holds the handle with his right hand. Therefore, the left hand that attaches and detaches the battery crosses with the right hand that holds the handle. Therefore, there is room for improvement in attaching and detaching the battery. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2001-293672 A [Patent Document 2] JP 2014-79812 A Summary of the Invention [Problem to be solved by the invention]

[0005] Therefore, there has been a demand for a portable processing machine that is compact in length and has a good weight balance. [Means for solving the problem]

[0006] According to one aspect of the present disclosure, a portable processing machine has a handle extending in a front-rear direction. A cutting tool is provided in parallel on either the left or right side of the handle. A battery is located on a rear lower surface of the handle. The longest side of the battery is oriented in the left-right direction, and the left-right center of the longest side is located closer to the cutting tool than the left-right center of the handle.

[0007] Therefore, the longest side of the battery extends left and right under the rear of the handle. This allows the front-to-rear length of the entire processing machine to be shortened when the battery is attached. Furthermore, the battery extends from the rear of the battery toward the cutting tool. This means that the weight of the battery is located on the cutting tool side, making it easier to process the workpiece with the cutting tool. [Brief description of the drawings]

[0008] [Figure 1] 1 is a perspective view of a portable processing machine according to an embodiment of the present invention, seen from diagonally rear left. [Diagram 2] FIG. [Diagram 3] FIG. [Figure 4] FIG. [Diagram 5] FIG. [Figure 6] 6 is a cross-sectional view taken along line VI-VI in FIG. [Figure 7] FIG. 2 is a perspective view of the battery pack. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] According to another aspect of the present disclosure, the longest side of the battery intersects an imaginary plane in which the cutting tool extends, so that the center of gravity of the battery is close to the cutting tool, making it easier to cut the workpiece with the cutting tool.

[0010] According to another aspect of the present disclosure, a battery mounting portion is provided on the rear underside of the handle, and the battery is mounted so as to be slidable in the left-right direction. This allows the battery to be easily attached and detached with the hand that is not holding the handle.

[0011] According to another aspect of the present disclosure, the battery has a hook that engages with the battery mounting portion, and an operating portion that is operated to release the hook from the battery mounting portion. The operating portion is located at an end of the battery that protrudes from the rear lower surface of the handle toward the cutting tool. Therefore, the operating portion is provided at a position close to the center of gravity of the entire processing machine. This improves the ease of attaching and detaching the battery.

[0012] According to another aspect of the present disclosure, the operating unit is positioned so as to intersect with an imaginary plane along which the cutting tool extends. Therefore, the operating unit is provided in a dead space behind the cutting tool, and the left-right length of the entire processing machine can be shortened.

[0013] According to another aspect of the present disclosure, a portable processing machine has a base that is placed on a workpiece and on which a processing machine body is mounted so as to be swingable up and down. When the processing machine body is located at the bottom dead center, the battery is inclined upward and backward at an angle of 20 to 50 degrees with respect to the base. Therefore, even if the battery is large, the battery is unlikely to interfere with the base.

[0014] According to another aspect of the present disclosure, the handle has a front portion extending rearward and upward, and a rear portion extending rearward and downward from a rear end of the front portion. The battery protrudes rearward at an angle of 120 degrees ±20 degrees relative to the rear portion of the handle. Therefore, the battery can be positioned at an angle that is unlikely to interfere with the hand gripping the handle.

[0015] According to another aspect of the present disclosure, the center of the battery in the extension direction of the longest side is located between the cutting tool and the handle, so that the center of gravity of the battery is close to the center of the entire processing machine, thereby improving the operability of the processing machine.

[0016] According to another aspect of the present disclosure, the center of gravity of the portable processing machine including the battery is located between the cutting tool and the handle, which improves the stability of the entire processing machine, making it easier to process the workpiece with the cutting tool.

[0017] According to another aspect of the present disclosure, the portable processing machine has a motor that rotates a cutting tool. The handle is disposed so that the distance between the handle and the outermost end of the stator of the motor in the left-right direction is shorter than the distance between the cutting tool and the handle. This improves the left-right balance of the entire processing machine. This makes it easier to process the workpiece with the cutting tool.

[0018] According to another aspect of the present disclosure, the handle is located on the right side of the cutting tool. Therefore, when the handle is held with the right hand, the ink line is closer to the center of the user's body, making it easier to see. The battery can be attached and detached with the left hand without crossing the right hand holding the handle. A left-handed user may also hold the handle with the left hand. In this case, the cutting tool is farther away from the center of the user's body, which is the general use state of the processing machine.

[0019] According to another aspect of the present disclosure, a portable processing machine has a base that is placed on a workpiece and on which a processing machine body is mounted so as to be tiltable left and right. A rear tilt fixing operation part fixes the left and right tilt of the processing machine body relative to the base. A battery tilts rearward and upward and overlaps upward with the tilt fixing operation part. Therefore, the front-to-rear length of the entire processing machine is shortened, while the battery is less likely to interfere with the rear tilt fixing operation part.

[0020] According to another aspect of the present disclosure, the battery protrudes in the left-right direction from the rear lower surface of the handle. The distance the battery protrudes in the left-right direction is set to be longer on the cutting tool side than on the side away from the cutting tool. Therefore, the center of gravity of the battery is located on the cutting tool side, making it easier to process the workpiece with the cutting tool.

[0021] Next, one embodiment of the present disclosure will be described with reference to Figs. 1 to 7. As shown in Fig. 1, the portable processing machine 1 is one type of portable cutting machine, and is called a portable left-handed circular saw. The portable processing machine 1 has a rectangular flat base 5 that is brought into contact with the upper surface of a workpiece, and a processing machine body 2 supported on the upper surface side of the base 5. In the following description, the cutting direction of the portable processing machine 1 is defined as the front side. The user is positioned behind the portable processing machine 1, and the left and right directions are defined based on the user.

[0022] As shown in Figs. 2 and 3, the processing machine body 2 has a motor housing 2a in the lower area in the center from front to back. As shown in Fig. 6, the motor housing 2a accommodates an electric motor 10 as a drive source. A cylindrical gear housing 2c is connected to the left end of the motor housing 2a. A disk-shaped cutting tool 4 is removably attached to the left side of the gear housing 2c. The cutting tool 4 is a circular saw blade called a tipped saw blade. A loop-shaped handle 3 is provided above the joint between the motor housing 2a and the gear housing 2c. A switch lever 3c is provided on the inner circumference of the handle 3. The electric motor 10 is started by turning on the switch lever 3c with the fingertips of the hand holding the handle 3. This causes the cutting tool 4 to rotate.

[0023] As shown in Fig. 1, a battery mounting section 3e is provided on the underside of the rear section 3b of the handle 3. A battery pack (battery) 8 is attached to the battery mounting section 3e. The battery pack 8 is, for example, a lithium ion battery, and is slid into and removed from the battery mounting section 3e. The battery pack 8 can be used repeatedly by removing it from the battery mounting section 3e and charging it with a separately prepared charger.

[0024] As shown in Figs. 1 and 3, the processing machine body 2 is supported on the upper surface of the base 5 via the front support part 6 and the rear support part 7. The front support part 6 and the rear support part 7 have left and right tilting support shafts 6a and 7a whose axes are oriented in the front-rear direction, respectively. The processing machine body 2 is supported so that it can tilt left and right by the front and rear left and right tilting support shafts 6a and 7a. As shown in Figs. 3 and 4, the front support part 6 and the rear support part 7 have angular plates 6b and 7b standing on the upper surface of the front and rear parts of the base 5. The angular plates 6b and 7b have support grooves 6f and 7h that are arc-shaped when viewed from the front or rear, respectively. Support shafts 6g and 7i provided on the front and rear parts of the processing machine body 2 are inserted into the support grooves 6f and 7h. Tilting brackets 6c and 7c are attached to the angular plates 6b and 7b by the support shafts 6g and 7i. Thumb screws 6d and 7d are attached to the tips of the support shafts 6g and 7i.

[0025] As shown in FIG. 4, by loosening the thumb screws 6d, 7d, the support shafts 6g, 7i are moved along the support grooves 6f, 7h. This causes the tilt brackets 6c, 7c to tilt left and right relative to the angular plates 6b, 7b. This causes the processing machine body 2 to tilt left and right around the left and right tilt support shafts 6a, 7a. By tightening the thumb screws 6d, 7d, the tilt brackets 6c, 7c are fixed relative to the angular plates 6b, 7b. This fixes the left and right tilt position of the processing machine body 2. The thumb screws 6d, 7d correspond to the tilt fixing operation unit.

[0026] As shown in Figs. 1 and 3, a vertical swing support shaft 6e long in the left-right direction is provided on the front tilt bracket 6c. The front part of the processing machine body 2 is rotatably connected to the vertical swing support shaft 6e. As shown in Fig. 2, an arc-shaped depth guide 7e extending in the front-rear direction is connected to the rear tilt bracket 7c. The depth guide 7e has an arc-shaped guide groove in a side view. A fixing screw 7g connected to the processing machine body 2 is inserted into the guide groove. The processing machine body 2 swings up and down along the guide groove of the depth guide 7e. This changes the amount of protrusion of the cutting tool 4 to the underside of the base 5. The solid line in Fig. 3 shows a state in which the processing machine body 2 is positioned at the bottom dead center with respect to the base 5 and the cutting depth is set to the maximum. The virtual line in Fig. 3 shows a state in which the processing machine body 2 is positioned at the top dead center with respect to the base 5.

[0027] As shown in Figure 2, a fixed lever 7f is attached to the tip of the fixed screw 7g. When the fixed lever 7f is tilted downward, the fixed screw 7g is tightened. This causes the depth guide 7e to be clamped by the fixed screw 7g. This fixes the vertical swing position of the processing machine body 2 relative to the base 5. When the fixed lever 7f is tilted upward, the fixed screw 7g is loosened. This changes the vertical swing position of the processing machine body 2. This makes it possible to adjust the cutting depth of the cutting tool 4.

[0028] As shown in FIG. 6, the electric motor 10 has a motor shaft 11 that is long in the left-right direction. The electric motor 10 is a brushless motor and includes a stator 13 and a rotor 12. The stator 13 generates magnetic flux by power supplied from the battery pack 8. The rotor 12 is a permanent magnet and is provided on the motor shaft 11. A cooling fan 15 and a pinion gear 14 are attached to the motor shaft 11. When the cooling fan 15 rotates, outside air is introduced into the motor housing 2a from an air intake port 2b formed on the right side surface of the motor housing 2a. The introduced outside air cools the electric motor 10. The pinion gear 14 is screwed into an output gear 21 of the output section 20. The output gear 21 is press-fitted into a spindle 22. The pinion gear 14, the output gear 21, and the spindle 22 are housed in a gear housing 2c.

[0029] As shown in Figures 1 and 6, the tip of the spindle 22 protrudes leftward from the gear housing 2c. The cutting tool 4 is attached to the tip of the spindle 22 with a fixing screw. The upper side of the cutting tool 4 is covered by a fixed cover 4a and a dust cover 4b. The fixed cover 4a and the dust cover 4b are joined to the left end surface of the gear housing 2c. The dust cover 4b is composed of left and right divided bodies. The dust cover 4b has a semicircular cover portion 4c that fits around the circumference of the cutting tool 4. An exhaust port 4d is formed in front of the cover portion 4c. The exhaust port 4d has a roughly cylindrical shape that extends upward. A dust collection duct 4e is connected to the exhaust port 4d. A dust collection bag (not shown) is attached to the dust collection duct 4e.

[0030] As shown in Figs. 1 and 5, the lower side of the cutting tool 4 protrudes downward through a window 5a of the base 5. The peripheral edge of the lower side of the cutting tool 4 is covered with a movable cover 4f. The movable cover 4f is supported rotatably around the vicinity of the rotation center (spindle 22) of the cutting tool 4 relative to the fixed cover 4a. As shown in Fig. 5, the movable cover 4f is biased in the closing direction by a tension spring 4g provided between the movable cover 4f and the gear housing 2c. The movable cover 4f is rotated clockwise in Fig. 3 against the tension spring 4g. This exposes the peripheral edge of the cutting tool 4.

[0031] As shown in Figure 3, a controller housing 2d is provided at the rear of the motor housing 2a. A rectangular, flat controller 2e is housed in the controller housing 2d. The electric motor 10 has a sensor board that detects the position of the rotor 12. The sensor board transmits a signal to a control board of the controller 2e. A drive circuit that switches the current of the electric motor 10 is mounted on the control board. The control board therefore controls the electric motor 10 based on the received signal. The control board also has an auto-stop circuit that cuts off the power supply to the electric motor 10 according to the detection result of the battery state to prevent over-discharge or over-current.

[0032] As shown in Figs. 1 and 3, the handle 3 has a front portion 3a and a rear portion 3b. The front portion 3a extends rearward and upward from near the joint between the motor housing 2a and the gear housing 2c. The rear portion 3b extends rearward and downward from the rear end of the front portion 3a. The rear end of the rear portion 3b is joined to the front upper surface of the battery mounting portion 3e. The battery mounting portion 3e is generally flat. A lock-off button 3d is provided above the switch lever 3c. The lock-off button 3d is disposed on both the left and right sides of the rear portion 3b. When the lock-off button 3d is not pressed, the switch lever 3c is in a locked-off state in which pulling the switch lever 3c is prohibited. When either side of the lock-off button 3d is pressed, the locked-off state is released. This allows the switch lever 3c to be pulled. When the switch lever 3c is released from the pulled state, the lock-off button 3d is released from the pressed state, and the switch lever 3c is automatically returned to the locked-off state. The locked-off state prevents inadvertent activation by the user.

[0033] As shown in Fig. 3, an adapter housing 3f is provided on the right side of the front part 3a of the handle 3. A communication adapter 3g for short-range wireless communication is removably housed in the adapter housing 3f. The communication adapter 3g enables short-range wireless communication between the portable processing machine 1 and other wireless devices. By using short-range wireless communication, the start and stop of, for example, a dust collector installed nearby is started and stopped in conjunction with the start and stop operation of the portable processing machine 1.

[0034] FIG. 7 shows the removed battery pack 8. The battery pack 8 has a generally rectangular parallelepiped shape with a length dimension L in the left-right direction, a width dimension D in the front-rear direction, and a height dimension H in the up-down direction. The dimensions in each direction have a magnitude relationship of length dimension L>width dimension D>height dimension H, as in normal battery packs of this type. That is, the length dimension L is the longest dimension because the rail portion is made long to maintain a secure mounting state. The width dimension D is the second longest dimension because the terminals and the rail portion are arranged side by side. The length with a relatively high degree of freedom is the height dimension H, which is the shortest in this embodiment.

[0035] As shown in FIG. 7, the battery pack 8 is a slide-type battery pack, and is attached by moving a rail on the top surface and an engagement portion on the battery mounting portion 3e in parallel to the rail to engage them. Four terminals 8a are provided on the top surface of the battery pack 8. Each terminal 8a has two power terminals 8d and two communication terminals 8e. Each power terminal 8d is located on both outsides in the arrangement direction (front-rear direction) of each terminal 8a. Each communication terminal 8e is located on the inside in the arrangement direction (front-rear direction) of each terminal 8a. Each terminal 8a extends along the longest side of the battery pack 8. Each terminal 8a is provided so as to be arranged parallel to each other. The battery pack 8 is slid into the battery mounting portion 3e along each terminal 8a. As a result, the battery pack 8 is mounted in the battery mounting portion 3e. The longitudinal direction of the battery pack 8 is the attachment / detachment direction (sliding direction) with respect to the battery mounting portion 3e. As shown in FIG. 2, the attachment / detachment direction is the left-right direction. The battery pack 8 is attached to the battery mounting section 3e by sliding it to the right (attaching direction) relative to the battery mounting section 3e. The battery pack 8 is removed by sliding it to the left (removal direction) relative to the battery mounting section 3e. Since the longest side of the battery pack 8 extends in the left-right direction, the front-rear length of the processing machine body 2 can be shortened.

[0036] As shown in FIG. 7, a U-shaped hook 8b is provided on the upper left surface of the battery pack 8. When the battery pack 8 is slid to the mounting position, the hook 8b is engaged with the battery mounting section 3e. This keeps the battery pack 8 attached to the battery mounting section 3e. An operating section 8c for releasing the engaged state of the hook 8b is provided on the left side of the battery pack 8. By pressing the operating section 8c downward, the hook 8b is moved downward. This releases the hook 8b from the engaged state of the battery mounting section 3e.

[0037] As shown in Figs. 2 and 4, the battery pack 8 is attached along the underside of the battery attachment section 3e. The left and right ends of the attached battery pack 8 protrude left and right from the battery attachment section 3e. The protruding length of the left protruding portion is greater than the protruding length of the right protruding portion. The left protruding portion crosses the imaginary plane on which the blade 4 extends, behind the blade 4. The operating portion 8c of the battery pack 8 is located in the left extension. The operating portion 8c is provided so as to intersect with the imaginary plane on which the blade 4 extends. The center position of the battery pack 8 in the left-right direction is located between the blade 4 and the handle 3.

[0038] As shown in FIG. 3, the battery pack 8 attached to the battery attachment section 3e is inclined upward and backward at an angle of 35 degrees relative to the base 5. This makes it possible for the battery pack 8 to be less likely to interfere with the base 5 even if it is large. The battery pack 8 overlaps upward with the rear thumb screw 7d. This makes it possible to shorten the front-to-rear length of the processing machine main body 2. Furthermore, it makes it possible for the battery pack 8 to be less likely to interfere with the thumb screw 7d. The battery pack 8 protrudes backward at an angle of 120 degrees relative to the rear part 3b of the handle 3. This makes it possible to position the battery pack 8 at an angle that makes it less likely to interfere with the hand holding the handle 3.

[0039] As shown in FIG. 6, the left-right distance M from the handle 3 to the rightmost end of the stator 13 is shorter than the left-right distance N from the handle 3 to the cutting tool 4. Here, the rightmost end of the stator 13 is the end of the lamination 13a (permanent magnet portion), and does not include the sensor board that is provided in contact with the end of the lamination 13a. The position of the cutting tool 4 is the center in the thickness direction of the cutting tool 4. For this reason, for example, assuming that the position of the handle 3 is immovable, the center of gravity G of the portable processing machine 1 can be brought closer to the cutting tool 4. The center of gravity G of the portable processing machine 1 is set to be located between the handle 3 and the cutting tool 4. For this reason, it is easy to balance the left and right sides of the portable processing machine 1. This can increase the stability of the portable processing machine 1.

[0040] As described above, as shown in FIG. 2, the portable processing machine 1 has the handle 3 extending in the front-rear direction. The cutting tool 4 is arranged in parallel on the left side of the handle 3. The battery pack 8 is located on the lower surface of the rear part 3b of the handle 3. The longest side (length dimension L) of the battery pack 8 is oriented in the left-right direction, and the left-right center of the longest side is located on the cutting tool 4 side from the left-right center of the handle 3. Therefore, the longest side of the battery pack 8 extends in the left-right direction under the rear part 3b of the handle 3. Therefore, the front-rear length of the entire portable processing machine 1 with the battery pack 8 attached can be shortened. Furthermore, the battery pack 8 extends from the rear part of the battery pack 8 toward the cutting tool side. Therefore, the weight of the battery pack 8 is located on the cutting tool 4 side, making it easier to process the workpiece with the cutting tool 4.

[0041] 2, the longest side of the battery pack 8 crosses the imaginary plane on which the cutting tool 4 extends. Therefore, the center of gravity of the battery pack 8 is close to the cutting tool 4, making it easier for the cutting tool 4 to cut the workpiece.

[0042] 1, a battery mounting section 3e to which the battery pack 8 is mounted so as to be slidable in the left-right direction is provided on the underside of the rear portion 3b of the handle 3. Therefore, the battery pack 8 can be easily attached and detached with the hand that is not holding the handle 3.

[0043] 7, the battery pack 8 has a hook 8b that engages with the battery attachment part 3e and an operating part 8c that is operated when releasing the hook 8b from the battery attachment part 3e. The operating part 8c is located at an end of the battery that protrudes from the underside of the rear part 3b of the handle 3 toward the blade 4. This improves the ease of attachment and detachment of the battery pack 8.

[0044] 2, the operation unit 8c is positioned so as to intersect with an imaginary plane on which the cutting tool 4 extends. Therefore, the operation unit 8c is provided in the dead space behind the cutting tool 4. This allows the left-right length of the processing machine body 2 to be shortened.

[0045] 3, the portable processing machine 1 has a base 5 that is placed on the workpiece and on which the processing machine body 2 is mounted so as to be able to swing up and down. When the processing machine body 2 is located at the bottom dead center, the battery pack 8 is inclined upward and backward at an angle of 35 degrees with respect to the base 5. Therefore, even if the battery pack 8 is large, it is unlikely that the battery pack 8 will interfere with the base 5.

[0046] 3, the handle 3 has a front portion 3a extending upward and rearward, and a rear portion 3b extending downward and rearward from the rear end of the front portion 3a. The battery pack 8 protrudes rearward at an angle of 120 degrees relative to the rear portion 3b of the handle 3. Therefore, the battery pack 8 can be positioned at an angle that is unlikely to interfere with the hand holding the handle 3.

[0047] 2, the center of the battery pack 8 in the extension direction of the longest side is located between the cutting tool 4 and the handle 3. Therefore, the center of gravity of the battery pack 8 is close to the center of the portable processing machine 1. This improves the operability of the portable processing machine 1.

[0048] 2, the center of gravity G of the portable processing machine 1 including the battery pack 8 is located between the cutting tool 4 and the handle 3. This improves the stability of the portable processing machine 1. This makes it easier to process the workpiece with the cutting tool 4.

[0049] As shown in Fig. 6, the portable processing machine 1 has an electric motor 10 that rotates a cutting tool 4. The handle 3 is positioned so that the distance M between the handle 3 and the outermost end in the left-right direction of a stator 13 of the electric motor 10 is shorter than the distance N between the cutting tool 4 and the handle 3. Therefore, the center of gravity G of the portable processing machine 1 is closer to the cutting tool 4. This makes it easier to process the workpiece with the cutting tool 4.

[0050] As shown in Figure 2, the handle 3 is located to the right of the cutting tool 4. Therefore, when the handle 3 is held with the right hand, the ink line is closer to the center of the user's body, making it easier to see. Also, the battery pack 8 can be attached and detached with the left hand without crossing the right hand holding the handle 3. A left-handed user may also hold the handle 3 with the left hand. In this case, the cutting tool 4 is farther away from the center of the user's body, which is the general usage state of the processing machine.

[0051] As shown in Fig. 3, the portable processing machine 1 has a base 5 that is placed on the workpiece and on which the processing machine body 2 is mounted so as to be tiltable left and right. A rear thumb screw 7d fixes the left and right tilt of the processing machine body 2 relative to the base 5. The battery pack 8 tilts rearward and upward, and overlaps the thumb screw 7d upward. Therefore, the front-to-rear length of the entire portable processing machine 1 is shortened, while the battery pack 8 is less likely to interfere with the rear thumb screw 7d.

[0052] 2, the battery pack 8 protrudes in the left-right direction from the underside of the rear part 3b of the handle 3. The distance that the battery pack 8 protrudes in the left-right direction is set to be longer on the side of the cutting tool 4 than on the side away from the cutting tool 4. Therefore, the center of gravity of the battery pack 8 is located on the side of the cutting tool 4, making it easier to process the workpiece with the cutting tool 4.

[0053] Various modifications can be made to the embodiment described above. For example, the portable processing machine 1 is exemplified as a portable circular saw, which is a type of portable cutting machine. Alternatively, a cutter that uses a diamond wheel instead of a circular saw blade can be used in the same way. Alternatively, a groove cutting cutter for groove processing can be used in the same way. The portable processing machine 1 is exemplified as a left-handed circular saw. Alternatively, a right-handed circular saw can be used in the same way. In other words, a cutting tool can be provided in parallel on the right side of the handle 3.

[0054] The battery pack 8 is exemplified as being slidably attached to and detached from the battery mounting section 3e. Alternatively, the battery pack 8 may be attached by, for example, pressing it against the battery mounting section 3e without sliding. The battery pack 8 is exemplified as being slid in the left-right direction. Alternatively, the battery pack 8 may be slid in the front-rear direction or up-down direction. The battery pack 8 may be configured not to be inclined with respect to the base 5. The battery pack 8 may be configured to be provided at any angle with respect to the handle 3. The battery pack 8 may be configured to have different thicknesses and lengths in the front-rear and left-right directions. The battery pack 8 is exemplified as being configured to cross an imaginary plane on which the blade 4 extends in the left-right direction. Alternatively, the battery pack 8 may be configured not to intersect with the imaginary plane. The battery pack 8 is exemplified as being configured so that the left-right center is located between the handle 3 and the blade 4. Alternatively, the left-right center of the battery pack may be located beyond the blade 4 from the handle 3 side.

[0055] The operation unit 8c is exemplified as a button that is pushed downward. Instead of this, it may be configured to be pushed upward, left and right, or front and rear. The operation unit 8c may be configured, for example, to release the lock by pulling a lever instead of a button. The operation unit 8c may be configured to be provided on the bottom surface, left and right surfaces, or front and rear surfaces of the battery pack 8.

[0056] A brushless motor is illustrated as the electric motor 10. Alternatively, a brushed DC motor may be used. The output unit 20 may be configured to transmit the rotation output of the electric motor 10 via a reduction gear unit.

[0057] The base 5 is exemplified as a rectangular flat plate member, but may be configured in any shape to suit the workpiece.

[0058] The portable processing machine 1 of the embodiment is an example of a portable processing machine in one aspect of the present disclosure. The handle 3 of the embodiment is an example of a handle in one aspect of the present disclosure. The cutting tool 4 of the embodiment is an example of a cutting tool in one aspect of the present disclosure. The battery pack 8 of the embodiment is an example of a battery in one aspect of the present disclosure.

[0059] The battery mounting portion 3e of the embodiment is an example of a battery mounting portion according to an aspect of the present disclosure. The hook 8b of the embodiment is an example of a hook according to an aspect of the present disclosure. The operating portion 8c of the embodiment is an example of an operating portion according to an aspect of the present disclosure.

[0060] The base 5 of the embodiment is an example of a base according to an aspect of the present disclosure. The electric motor 10 of the embodiment is an example of a motor according to an aspect of the present disclosure. The thumb screws 6d and 7d of the embodiment are an example of a tilt fixing operation unit according to an aspect of the present disclosure. [Explanation of symbols]

[0061] 1 Portable processing machine 2 Processing machine body 2a Motor housing 2b Air intake 2c Gear Housing 2d Controller housing 2e Controller 10 Electric motor 11 Motor shaft 12 Rotor 13 Stator 13a Lamination 14 Pinion gear 15 Cooling fan 20 Output section 21 Output gear 22 Spindle 3 Handle 3a front 3b rear 3c Switch lever 3d lock off button 3e Battery attachment section 3f Adapter housing 3g communication adapter 4 Cutting tools 4a Fixed cover 4b Dust cover 4c Cover part 4d outlet 4e Dust collection duct 4f Movable cover 4g tension spring 5. Bass 5a Window 6 Front support part 6a Left and right tilting support shaft 6b Angular Plate 6c Tilt bracket 6d Thumb screw (tilt fixing operation part) 6e Up and down swing shaft 6f support groove 6g support shaft 7 Rear support part 7a Left and right tilting support shaft 7b Angular Plate 7c Tilt bracket 7d Thumb screw (tilt fixing operation part) 7e Depth Guide 7f Fixed lever 7g Fixing screw 7h support groove 7i support shaft 8 Battery Pack 8a terminal 8b Hook 8c Control unit 8d power terminal 8e Communication terminal G center of gravity L Length dimension D Width dimension H Height dimension

Claims

1. A portable processing machine, A handle extending in the front-rear direction; A cutting tool is provided in parallel on either the left or right side of the handle; A portable processing machine having a battery located on the rear underside of the handle, with the longest side oriented in the left-right direction and the left-right center of the longest side located closer to the cutting tool than the left-right center of the handle.

2. The portable processing machine according to claim 1, A portable processing machine in which the longest side of the battery intersects an imaginary plane in which the cutting tool extends.

3. The portable processing machine according to claim 1 or 2, The portable processing machine has a battery mounting portion on the rear lower surface of the handle, on which the battery is mounted so as to be slidable in the left-right direction.

4. The portable processing machine according to claim 3, the battery has a hook that engages with the battery mounting portion and an operating portion that is operated to release the hook from the battery mounting portion, The operating unit is a portable processing machine located at an end of a battery that protrudes from the rear lower surface of the handle toward the cutting tool.

5. The portable processing machine according to claim 4, The operating unit is a portable processing machine positioned so as to intersect with an imaginary plane on which the cutting tool extends.

6. A portable processing machine according to claim 1, A base is placed on the workpiece and on which the processing machine body is mounted so as to be swingable up and down; The battery is a portable processing machine that tilts upward and backward at an angle of 20 to 50 degrees relative to the base when the processing machine body is located at the bottom dead center.

7. A portable processing machine according to claim 1, The handle has a front portion extending rearward and upward and a rear portion extending rearward and downward from the rear end of the front portion, and the battery protrudes rearward at an angle of 120 degrees ± 20 degrees relative to the rear portion of the handle.

8. A portable processing machine according to claim 1, The portable processing machine has a center of the battery in the extension direction of the longest side located between the cutting tool and the handle.

9. A portable processing machine according to claim 1, The center of gravity of the portable processing machine including the battery is located between the cutting tool and the handle.

10. A portable processing machine according to claim 1, a motor that rotates the cutting tool; The portable processing machine is configured such that the distance between the handle and the outermost end of the stator of the motor in the left-right direction is shorter than the distance between the cutting tool and the handle.

11. A portable processing machine according to claim 1, The handle is located on the right side of the cutting tool.

12. A portable processing machine according to claim 1, a base on which the workpiece is placed and on which the processing machine body is mounted so as to be tiltable left and right; a rear tilt fixing operation unit that fixes the tilt of the processing machine body in the left-right direction relative to the base; The battery of the portable processing machine tilts rearward and upward and overlaps above the tilting and fixing operation unit.

13. A portable processing machine according to claim 1, The battery protrudes in the left-right direction from the rear lower surface of the handle, and the distance it protrudes in the left-right direction is longer on the cutting tool side than on the side away from the cutting tool.

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