Portable cutting machine

Abstract

To satisfactorily maintain the moving operability of a handle independently of the attitude of a cutting machine body, because, when the main body of the cutting machine is tilted to the left or right for sloping cutting or pivoted up and down to change the depth of cut, the handle to be grasped for moving operation is also displaced in unison, thus, the user must hold the handle in a tight posture when moving it, which impairs the ease of moving and operating the portable cutting machine.SOLUTION: In the portable cutting machine according to the invention, the body of the cutting machine is supported to tilt left and right and to pivot up and down with respect to the base 10, the handle 30 and battery mounting part 40 are provided on the base 10 side independently of the tilting and swinging motion of the cutting machine body, thus, the grippability of the handle 30 during the moving operation is maintained well independently of the posture of the cutting machine body, the electric wiring 2 arranged between the base 10 and the main body of the cutting machine is covered with a laterally U-shaped tilting interposing member 53 having elasticity in the left and right directions to ensure dust resistance.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present disclosure relates to a portable cutting machine used for cutting a material to be cut, such as wood. [Background technology]

[0002] The portable cutting machine includes a base that is in contact with the material to be cut, and a cutting machine body supported on the base. The cutting machine body includes a disk-shaped cutting tool that is rotated by an electric motor, and a handle that is held by the user during cutting. When the user holds the handle and moves it, the cutting tool cuts into the material to perform the cutting process. By holding the cutting machine body in a position tilted left or right with respect to the direction of cutting, the cutting tool cuts diagonally into the material to perform a so-called bevel cut. In addition, the cutting machine body can be swung up and down to change the cutting depth of the cutting tool into the material to be cut.

[0003] Tilting the cutting machine body left or right or swinging it up and down changes the position of the handle, and the user's gripping posture also changes. As a result, it may become difficult for the user to apply operating force for moving the machine, and operability during cutting may deteriorate. Patent Document 1 discloses a cutting machine in which a handle that is gripped by the user is provided on the base. With this cutting machine, the gripping posture of the handle does not change regardless of the left / right tilt position or up / down swing position of the cutting machine body, ensuring good operability. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2016-55630 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, the cutting machine disclosed in Patent Document 1 has a cutting machine body fixed at a certain angle relative to a tilt-only base used for special purposes, and the vertical swing position is also fixed, so the posture of the cutting machine body cannot be changed. In addition, since the cutting machine in Patent Document 1 is an AC circular saw that uses an AC power source, handling of the battery is not disclosed. When a battery is installed, the mass of the entire product increases, so if the handle posture is not appropriate, the burden on the hand supporting the product increases. The purpose of this disclosure is to maintain good handle movement operability for a portable cutting machine in which the posture of the cutting machine body can be changed. [Means for solving the problem]

[0006] According to one aspect of the present disclosure, the portable cutting machine includes a base that is in contact with a workpiece, a cutting machine body that is tiltably supported on the base and includes an electric motor, a battery attachment section to which a battery that is a power source for the electric motor is detachably attached, and a handle that is provided on the base independently of the tilting movement of the cutting machine body and that is held by a user.

[0007] According to another aspect of the present disclosure, a portable cutting machine includes, for example, a base that is brought into contact with a workpiece, a cutting machine body that is tiltably supported on the base and includes an electric motor, a handle that is provided on the base independently of the tilting movement of the cutting machine body and that is held by a user, and a switch lever that is provided on the handle and that starts the electric motor.

[0008] Therefore, the handle can be positioned independently of the attitude of the cutting machine body. This maintains good operability in movement of the handle. According to one or other aspects of the present disclosure, even if the attitude of the cutting machine body relative to the base is changed, the handle is held in an easy-to-grip attitude, so that good operability in movement of the portable cutting machine is maintained. In particular, good operability in movement of the handle is more pronounced for products equipped with a battery. Furthermore, good operability in movement is more pronounced for handles equipped with a switch lever. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view of a portable cutting machine according to a first embodiment. [Diagram 2] FIG. 2 is a right side view of the portable cutting machine of the first embodiment. [Diagram 3] FIG. 1 is a plan view of a portable cutting machine according to a first embodiment. [Figure 4] This is a cross-sectional view taken along line IV-IV in Figure 3. This figure shows the state where the cutting machine body is positioned at the right-angle cutting position. [Diagram 5] Fig. 4 is a cross-sectional view taken along line IV-IV in Fig. 3. This drawing shows a state in which the cutting machine body is tilted to the right. [Figure 6] 1 is a perspective view of a portable cutting machine according to a first embodiment, showing a state in which the cutting machine body is tilted to the right. [Figure 7] 1 is a perspective view of a portable cutting machine according to a first embodiment, showing a state in which the cutting machine body is swung upward. [Figure 8] 1 is a perspective view of the base of a portable cutting machine according to a first embodiment, with the cutting machine body not shown in this figure. [Figure 9] 1 is a perspective view of a tilting intervening member and a swinging intervening member according to a first embodiment, the view being seen from diagonally rear left. [Figure 10] 1 is a perspective view of a tilting intervening member and a swinging intervening member according to a first embodiment, the view being seen from diagonally rear right. [Figure 11] FIG. 2 is an exploded perspective view of the wiring cover according to the first embodiment. [Figure 12] Fig. 1 is a perspective view of a portable cutting machine according to a second embodiment, showing the cutting machine body tilted to the right. [Figure 13] FIG. 11 is an exploded perspective view of a wiring cover according to a second embodiment. [Figure 14] 11 is a perspective view of a portable cutting machine according to a third embodiment, in which an angular plate and a part of a support bracket are not shown. [Figure 15] FIG. 11 is an exploded perspective view of a wiring cover according to a third embodiment. [Figure 16] 16 is a view taken along the arrow XVI in FIG. 14, showing a front view of the wiring cover and its periphery. [Figure 17] 13 is a vertical cross-sectional view of a wiring cover according to a third embodiment. This drawing shows a state where the cutting machine body is positioned at a right-angle cutting position. [Figure 18] 13 is a vertical cross-sectional view of a wiring cover according to a third embodiment. This drawing shows a state in which the cutting machine body is tilted to the right. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] In one or more embodiments, for example, the cutter body is provided so as to be capable of swinging in a direction different from the tilting motion. The handle is provided on the base independent of the swinging motion of the cutter body. Therefore, even if the swinging position of the cutter body is changed, the handle portion is held in a good position independent of the swinging position of the cutter body.

[0011] For example, in the case of bevel cutting, the cutting machine body is tilted left or right relative to the cutting direction. Also, for example, when changing the cutting depth of the cutting tool or in the case of a plunge saw, the vertical swing position of the cutting machine body is changed. In this case, the posture of the cutting machine body relative to the base changes. The tilting operation is to tilt the posture of the cutting machine body, for example, left or right relative to the cutting direction, and the swinging operation is to change the posture of the cutting machine body, for example, up or down.

[0012] In one or more embodiments, for example, the handle is mounted to the base so as not to move relative to the base, so that the handle is always maintained in a good position, regardless of changes in the position of the cutting machine body.

[0013] In one or more embodiments, for example, a switch lever for starting the electric motor is provided on the handle, and the battery attachment portion is provided adjacent to the handle, thereby simplifying the wiring structure between the battery attachment portion and the switch lever.

[0014] In one or more embodiments, for example, the battery mounting portion is provided so as to be immovable relative to the handle, and thus the wiring path between the battery mounting portion and the handle is fixed, simplifying the wiring structure.

[0015] In one or more embodiments, for example, electrical wiring is routed between the base and the cutting machine body. For example, the base is provided with a first wire holder that extends from the battery mounting portion and covers the electrical wiring. For example, the cutting machine body is provided with a second wire holder that extends from near the electric motor and covers the electrical wiring. For example, the first wire holder and the second wire holder are connected to each other so as to be able to tilt with each other by an elastically deformable intervening member. For example, the electrical wiring is inserted through the intervening member.

[0016] Therefore, the electrical wiring arranged between the base and the cutting machine body is covered by the first wire holder, the second wire holder and the interposed member. The interposed member allows the first wire holder and the second wire holder to tilt relative to each other, thereby allowing the cutting machine body to tilt relative to the base. The interposed member elastically deforms, so that the electrical wiring remains covered even when the cutting machine body is tilted.

[0017] In one or more embodiments, for example, electrical wiring is routed between the base and the cutting machine body. For example, the base is provided with a first wire holder that extends from the battery mounting portion and covers the electrical wiring. For example, the cutting machine body is provided with a second wire holder that extends from near the electric motor and covers the electrical wiring. For example, the first wire holder and the second wire holder are connected to each other so as to be tiltable by an intervening member having a single joint structure or a multi-joint structure. For example, the electrical wiring is inserted through the intervening member.

[0018] Therefore, the electrical wiring arranged between the base and the cutting machine body is covered by the first wire holder, the second wire holder and the intervening member. The intervening member allows the first wire holder and the second wire holder to tilt relative to each other, thereby allowing the cutting machine body to tilt relative to the base. The intervening member deforms using a single joint structure or a multi-joint structure, so that the electrical wiring remains covered even when the cutting machine body is tilted.

[0019] In one or more embodiments, for example, electrical wiring is routed between the base and the cutting machine body. For example, the base is provided with a first wire holder that extends from the battery attachment portion and covers the electrical wiring. For example, the cutting machine body is provided with a second wire holder that extends from near the electric motor and covers the electrical wiring. For example, an intervening member is provided between the first wire holder and the second wire holder. For example, a first end of the intervening member is connected to the first wire holder so as to be tiltable in the left-right direction. For example, a second end of the intervening member is connected to the second wire holder. For example, the electrical wiring is inserted through the intervening member.

[0020] Therefore, the electrical wiring arranged between the base and the cutting machine body is covered by the first wire holder, the second wire holder and the intervening member. The first wire holder and the second wire holder are connected to each other via the intervening member. The first end of the intervening member tilts left and right relative to the first wire holder, allowing the cutting machine body to tilt relative to the base. The electrical wiring remains covered even when the cutting machine body is tilted.

[0021] In one or more embodiments, for example, the cutting machine body is provided so as to be able to swing in a direction different from the tilting motion. For example, the first wire holder and the second wire holder are connected to each other so as to be able to swing with each other by an intervening member. For example, the swing center of the second wire holder relative to the intervening member coincides with the swing center of the cutting machine body. Therefore, it is possible to reduce movement of the electrical wiring due to the swinging motion of the cutting machine body.

[0022] In one or more embodiments, for example, the base is provided with an angular plate that tiltably supports the cutting machine body. For example, the cutting machine body includes a motor housing that covers the electric motor and a fixed cover that covers the cutting tool rotated by the electric motor. For example, the intervening member is disposed in an area defined by the angular plate, the motor housing, the fixed cover, and the second wire holder. Therefore, the intervening member is disposed by utilizing the free space. This prevents the portable cutting machine from becoming large in size.

[0023] In one or more embodiments, for example, the intervening member has a tilting intervening member that allows the cutting body to tilt, and a swinging intervening member that allows the cutting body to swing. For example, the swinging intervening member has a first swinging opening that opens in a first direction along the swing center of the cutting body, and a second swinging opening that opens in a second direction opposite to the first direction. Electrical wiring is inserted into the swinging intervening member through the first swinging opening and the second swinging opening. Therefore, the path of the electrical wiring in the swinging intervening member is simplified.

[0024] In one or more embodiments, for example, the cutting machine body is provided to be swingable in a direction different from the tilting motion. For example, the second wire holder has a cylindrical second holder opening that opens toward the swing opening of the intervening member. For example, the swing opening of the intervening member is cylindrical and rotatably connected to the second holder opening of the second wire holder. Therefore, the second wire holder is rotatably connected to the swing opening of the intervening member while suppressing displacement of the electrical wiring.

[0025] In one or more embodiments, for example, the first wire holder has a first holder opening that opens toward the intervening member. For example, the electrical wiring is inserted into the intervening member through the first holder opening of the first wire holder. Therefore, the displacement of the electrical wiring accompanying the tilting movement of the cutting machine body is suppressed, and the wiring path between the first wire holder and the intervening member is simplified.

[0026] In one or more embodiments, for example, the intermediate member has a sideways U-shape with a first tilt opening at one end and a second tilt opening at the other end. For example, electrical wiring is inserted into the intermediate member through the first tilt opening and the second tilt opening. Therefore, twisting of the electrical wiring caused by the tilting movement of the cutting machine body is suppressed.

[0027] In one or more embodiments, for example, the first end of the intervening member is cylindrical and embedded in the first wire holder to form a tilt center of the intervening member, so that the intervening member tilts left and right about the cylindrical first end embedded in the first wire holder.

[0028] In one or more embodiments, for example, an opening through which the electrical wiring is inserted is provided at the first end. For example, the opening is covered by the first wire holder over the entire tilting range of the cutting machine body. Therefore, the electrical wiring is not exposed from the first wire holder over the entire tilting range of the cutting machine body.

[0029] In one or more embodiments, for example, a widened portion is provided in the middle of the wiring path of the interposed member, thereby facilitating the wiring work of the electrical wiring.

[0030] In one or more embodiments, for example, the cutting machine body has a gripping portion that is gripped during tilting operation, thereby improving operability during tilting operation of the cutting machine body. EXAMPLES

[0031] The drawings show a portable circular saw in which a tipped saw blade, which is a type of circular saw blade, is used as a cutting tool as an example of the portable cutting machine 1. As shown in Figs. 1 to 4, the portable cutting machine 1 of the first embodiment includes a rectangular flat base 10 and a cutting machine body 20 supported on the upper surface side of the base 10. The base 10 is made of a light metal such as an aluminum die-cast alloy. As shown in the drawings, in the following description, the direction in which cutting processing progresses is defined as the forward direction. A user is positioned behind the portable cutting machine 1 and moves the portable cutting machine 1 forward to perform cutting processing. Therefore, the forward direction corresponds to the direction in which cutting processing progresses (cutting progress direction). The up-down direction and the left-right direction are based on the user.

[0032] The workpiece W to be cut is in contact with the underside of the base 10. A handle 30 and a battery attachment section 40 are provided on the upper surface of the base 10 to be held by the user. The handle 30 and the battery attachment section 40 are disposed on the left side of the cutting machine body 20. A handle base section 11 is provided on the upper surface of the base 10. A handle 30 bent in a mountain shape is provided on the upper part of the handle base section 11. The handle 30 is disposed across the upper surface of the handle base section 11 from the front part to the rear part. A trigger-type switch lever 31 is provided on the underside of the handle 30. A switch body 32 is mounted above the switch lever 31. When the switch lever 31 is pulled upward with the fingertips of the hand holding the handle 30, the switch body 32 is turned on and power is supplied to the cutting machine body 20. The switch lever 31 and the switch body 32 correspond to a start switch of the cutting machine body 20.

[0033] A battery mounting part 40 is provided on the left side of the handle base part 11. As shown in Fig. 8, the battery mounting part 40 is provided with positive and negative connection terminals 41, 42 and a pair of upper and lower guide rails 43, 44. The connection terminals 41, 42 are arranged between the upper and lower guide rails 43, 44. The battery pack 45 is mounted on the battery mounting part 40 by sliding the battery pack 45 forward relative to the battery mounting part 40. The battery pack 45 is electrically mounted on the battery mounting part 40 by the connection terminals 41, 42. The battery pack 45 is mechanically mounted on the battery mounting part 40 by the guide rails 43, 44. The battery pack 45 can be removed from the battery mounting part 40 by sliding it backward by pressing down an unlock button 45a.

[0034] The cutting machine body 20 is supported on the upper surface of the base 10 so as to be tiltable left and right and swingable up and down. The cutting machine body 20 is equipped with a disk-shaped cutting tool 22 called a tip saw that is rotated by an electric motor 21. The electric motor 21 is housed inside a cylindrical motor housing 21a. The electric motor 21 is started when the switch lever 31 of the handle 30 is pulled. The electric motor 21 is started using the power of the battery pack 45 attached to the battery attachment part 40 as a power source. The electric motor 21 is a DC brushless motor.

[0035] A main body housing 27 is provided on the upper part of the motor housing 21a. The main body housing 27 houses the controller 26. The controller 26 houses a control board including a power supply circuit for supplying power to the electric motor 21 and a control circuit for controlling the operation. The control board of the controller 26 is equipped with a control circuit made of a microcomputer that transmits a control signal based on rotor position information detected by a sensor board of the electric motor 21. The control board of the controller 26 is also equipped with a drive circuit made of an FET that switches the current of the electric motor 21 based on the control signal received from the control circuit. The control board of the controller 26 is also equipped with an auto-stop circuit and the like that cuts off the power supply to the electric motor 21 according to the detection result of the state of the battery pack 45 to prevent over-discharge or over-current.

[0036] An upper side of the cutting tool 22 is covered by a fixed cover 23. A lower side of the cutting tool 22 protrudes to the lower surface side of the base 10. The protruding portion of the cutting tool 22 cuts into the workpiece W. The periphery of the cutting tool 22 protruding to the lower surface side of the base 10 is covered by a movable cover 25.

[0037] An angular plate 12 is provided in an upwardly extending manner on the front portion of the upper surface of the base 10. A support bracket 13 is supported on the rear surface of the angular plate 12. The support bracket 13 is supported so as to be tiltable left and right via a main body tilting support shaft 14. A bifurcated swing support portion 13a is provided on the right side of the support bracket 13.

[0038] A swinging base 24 is provided integrally with the front part of the fixed cover 23. The swinging base 24 is connected to the swinging support part 13a of the support bracket 13 via the main body swinging support shaft 15. This supports the cutting machine main body 20 so that it can swing up and down around the axis (swing axis J2) of the main body swinging support shaft 15. In addition, by tilting the support bracket 13 left and right around the axis (tilting axis J1) of the main body tilting support shaft 14, the left and right tilting posture of the cutting machine main body 20 changes around the main body tilting support shaft 14.

[0039] The left / right tilt position of the support bracket 13 is fixed by rotating the fixing lever 16 in the tightening direction. By rotating the fixing lever 16 in the tightening direction, the fixing screw 16a is tightened into the support bracket 13. This fixes the tilt position of the support bracket 13. The fixing screw 16a is inserted into an arc-shaped groove 12a centered on the tilt axis J1.

[0040] As shown in FIG. 3, the rear of the cutting machine body 20 is supported on the base 10 via a depth guide 17. When the cutting machine body 20 is swung up and down around the front body swing support shaft 15, the rear side of the cutting machine body 20 is displaced in the height direction. The position of the fixed cover 23 relative to the depth guide 17 is fixed by fastening a fixing screw 18a to the left side of the fixed cover 23. This fixes the height direction position of the rear side of the cutting machine body 20 relative to the base 10. The fixing screw 18a is fastened and loosened by rotating the fixing lever 18 up and down. As shown in FIGS. 2 and 3, the lower part of the depth guide 17 is supported on the upper surface of the base 10 via a support shaft 17a that is coaxial with the body tilt support shaft 14 so as to be tiltable left and right. Therefore, the depth guide 17 can be tilted left and right integrally with the cutting machine body 20.

[0041] The cutting machine body 20 is tilted about 56° to the right as shown in Figs. 5 and 6 from the right-angle cutting position (position in which the cutting tool 22 cuts the workpiece W at a right angle) shown in Figs. 1 to 4, for example, so that the cutting angle of the cutting tool 22 with respect to the workpiece W changes, and so-called bevel cut can be performed. A cover grip 28 is provided on the upper rear of the fixed cover 23. The cover grip 28 protrudes radially outward from the cutting tool 22. The tip of the cover grip 28 is a T-shape formed at a substantially right angle, and the tip is gripped. When tilting the cutting machine body 20, the cover grip 28 is gripped and the hand gripping the cover grip 28 is moved. Since the cover grip 28 is located far from the center of the tilting operation, it is possible to operate the tilting operation of the cutting machine body 20 with a light load. This reduces the burden on the user during the tilting operation.

[0042] The amount by which the cutting tool 22 protrudes from the underside of the base 10 changes as the cutting machine body 20 swings up and down around the body swing support shaft 15. The amount by which the cutting tool 22 protrudes from the underside of the base 10 corresponds to the cutting depth of the cutting tool 22 into the workpiece W. For example, as shown in Figures 1, 2 and 4, the cutting machine body 20 is positioned at the lowest position to set the cutting depth of the cutting tool 22 to the maximum. As shown in Figure 7, the cutting machine body 20 is held at the upper position to set the cutting depth of the cutting tool 22 to a shallower value.

[0043] As shown in Figures 1 to 3, a subgrip 19 is provided on the left side near the front of the top surface of the base 10. The subgrip 19 is located in front of the electric motor 21. A user can hold the handle 30 with one hand and the subgrip 19 with the other hand. The user can move and operate the portable cutting machine 1 with both hands. Figures 6 to 8 show a state in which the subgrip 19 has been removed from the top surface of the base 10.

[0044] The handle 30, the battery attachment part 40, and the subgrip 19 are fixed to the base 10. Therefore, the positions and attitudes of the handle 30, the battery attachment part 40, and the subgrip 19 are maintained independent of the left-right tilting attitude or the up-down swinging attitude of the cutting machine body 20. This stabilizes the attitude for the user to perform movement operation (movement operability) regardless of the left-right tilting attitude or the up-down swinging attitude of the cutting machine body 20.

[0045] An electrical wiring 2 is routed between the base 10 and the cutting machine body 20. The battery attachment part 40 and the switch body 32 on the base 10 side are electrically connected to the controller 26 of the cutting machine body 20 via the electrical wiring 2. Therefore, the routing path (routing path) of the electrical wiring 2 is displaced due to changes in the left / right tilting attitude and the up / down swinging attitude of the cutting machine body 20. A wiring cover 50 is provided on the routing path of the electrical wiring 2 between the base 10 and the controller 26 of the cutting machine body 20. The electrical wiring 2 is covered with the wiring cover 50 to protect it from dust.

[0046] As shown in Figs. 6 to 8, the wiring cover 50 has a first wire holder 51, a second wire holder 52, and an intervening member 56. The intervening member 56 has a tilting intervening member 53 and a swinging intervening member 54. The first wire holder 51, the second wire holder 52, the tilting intervening member 53, and the swinging intervening member 54 are made of synthetic resin. This maintains insulation of the electrical wiring 2. The electrical wiring 2 is drawn out from near the lower part of the handle pedestal 11 and routed along the upper surface of the base 10. The handle pedestal 11 is provided in contact with the upper end of a frame 10b formed in a rectangular shape on the upper surface of the base 10. The electrical wiring 2 is drawn out from near the lower part of the handle pedestal 11 into the frame 10b. The first wire holder 51 is attached to the upper surface of the base 10 along a path that runs from near the lower part of the handle pedestal 11 to near the lower part of the angular plate 12. The first wire holder 51 has a cylindrical structure in which an upper holder portion 51c and a lower holder portion 51d are butted together vertically. The first wire holder 51 is loosely inserted into a groove portion 10a sandwiched between a pair of elongated ribs in the front-rear direction on the upper surface of the base 10.

[0047] The first wire holder 51 has a rectangular first holder opening 51a at the front. A rectangular connection port 51b is provided at the rear of the first wire holder 51. The connection port 51b is connected to the inside of the handle base 11. The electrical wiring 2 is routed from the handle base 11 to the inside of the first wire holder 51 through the connection port 51b. The first wire holder 51 covers the electrical wiring 2 in the routing path on the upper surface side of the base 10.

[0048] On the cutting machine main body 20 side, the electrical wiring 2 connected to the controller 26 is pulled out from the main body housing 27 (near the electric motor 21) and routed along a path leading to the vicinity of the angular plate 12. As shown in Figs. 1 and 3, a second wire holder 52 extends along a path leading from the front of the main body housing 27 to the front of the motor housing 21a. The second wire holder 52 has a tubular structure in which an upper holder portion 52b and a lower holder portion 52c are butted together vertically. The second wire holder 52 has a cylindrical second holder opening 52a at its front. The second wire holder 52 covers the electrical wiring 2 along the route leading to the cutting machine main body 20 side.

[0049] The first wire holder 51 is fixed to the upper surface of the base 10. The second wire holder 52 is fixed to the cutting machine body 20. Therefore, when the cutting machine body 20 is tilted left and right or swung up and down with respect to the base 10, the relative positions of the first wire holder 51 and the second wire holder 52 change. The change in the relative positions of the first wire holder 51 and the second wire holder 52 is absorbed by the tilting intervention member 53 and the swinging intervention member 54.

[0050] 9 to 11, the tilting intervening member 53 is an elastically deformable square cylinder made of elastic resin such as rubber, and has a horizontal U-shape with a first tilting opening 53a at the bottom and a second tilting opening 53b at the top. The first tilting opening 53a and the second tilting opening 53b are each opened in a rectangular shape. The electrical wiring 2 is covered by the tilting intervening member 53 through the first tilting opening 53a and the second tilting opening 53b.

[0051] A first holder opening 51a of the first wire holder 51 is connected to a first tilting opening 53a on the lower side of the tilting intervention member 53. The electric wiring 2 is routed across the first wire holder 51 and the tilting intervention member 53 through the first holder opening 51a and the first tilting opening 53a.

[0052] The tilting intervening member 53 is provided so as to be elastically deformable in a direction that displaces the upper second tilting opening 53b up and down (vertical expansion and contraction direction). The tilting intervening member 53 elastically deforms up and down in association with the left and right tilting operation of the cutting machine body 20. The swinging intervening member 54 is connected to the second tilting opening 53b on the upper side of the tilting intervening member 53. The second tilting opening 53b is connected to the first swinging opening 54a on the lower side of the swinging intervening member 54. The electrical wiring 2 is routed across the tilting intervening member 53 and the swinging intervening member 54 through the second tilting opening 53b and the first swinging opening 54a.

[0053] The swing intervening member 54 has a first swing opening 54a that opens in a first direction (rightward) along the swing axis J2 of the cutting machine body 20, and a second swing opening 54b that opens in a second direction (leftward) opposite to the first direction. The second swing opening 54b is located above the first swing opening 54a. Therefore, the inside of the swing intervening member 54 is bent in a roughly crank shape. The lower first swing opening 54a opens to the cutting tool 22 side, and the upper second swing opening 54b opens to the opposite cutting tool 22 side. The electric wiring 2 is inserted into the swing intervening member 54 through the first swing opening 54a and the second swing opening 54b. This simplifies the wiring path of the electric wiring 2 in the swing intervening member 54.

[0054] The swing intervening member 54 is connected to the mounting portion 13b of the support bracket 13 by one fixing screw 55. Therefore, the swing intervening member 54 is displaced integrally with the support bracket 13 as the cutting machine body 20 tilts left and right.

[0055] 3, the oscillating intervening member 54 is disposed within a compact area defined in plan view by the angular plate 12, the motor housing 21a, the fixed cover 23, and the second wire holder 52. The oscillating intervening member 54 is disposed in a normally occurring empty space. This allows a compact routing path for the electrical wiring 2 to be realized without increasing the size of the portable cutting machine 1.

[0056] The first swing opening 54a on the lower side of the swing intervening member 54 is opened in a rectangular shape. The second swing opening 54b on the upper side of the swing intervening member 54 is opened in a cylindrical shape. The central axis of the second swing opening 54b coincides with the swing axis J2 of the cutting machine body 20. The second holder opening 52a of the second wire holder 52 is coaxially connected to the second swing opening 54b. Therefore, the second wire holder 52 is connected to the second swing opening 54b so as to be rotatable relative to the swing axis J2. As the cutting machine body 20 swings up and down, the second wire holder 52 rotates relative to the swing intervening member 54 around the swing axis J2.

[0057] The electric wiring 2 is routed across the swing intervening member 54 and the second wire holder 52 through the second swing opening 54b and the second holder opening 52a. The electric wiring 2 routed between the base 10 and the cutting machine body 20 in this manner is covered by the first wire holder 51, the tilt intervening member 53, the swing intervening member 54, and the second wire holder 52. The tilt intervening member 53 is elastically deformable up and down, so that the electric wiring 2 displaced in association with the left-right tilting operation of the cutting machine body 20 is kept in a state covered by the wiring cover 50. In addition, the second wire holder 52 is rotatably connected to the swing intervening member 54 around the swing axis J2, so that the electric wiring 2 displaced in association with the up-down swinging operation of the cutting machine body 20 is kept in a state covered by the wiring cover 50.

[0058] According to the portable cutting machine 1 of the first embodiment described above, the handle 30 is separated from the cutting machine body 20 and provided on the base 10 side. Therefore, the handle 30 can be positioned independently of the attitude of the cutting machine body 20. As a result, even when the left-right tilting attitude of the cutting machine body 20 is changed or the up-down swinging position of the cutting machine body 20 is changed to change the cutting depth of the blade 22, the gripping attitude of the user with respect to the handle 30 is maintained well, and the movement operability of the handle 30 is maintained well.

[0059] According to the first embodiment, the handle 30 is attached to the base 10 so as to be immovable relative to the base 10. Therefore, the handle 30 is always maintained in a good posture, independent of changes in the posture of the cutting machine body 20.

[0060] According to the first embodiment, the switch lever 31 for starting the electric motor 21 is provided on the handle 30, and the battery attachment portion 40 is provided adjacent to the handle 30. Therefore, the wiring structure between the battery attachment portion 40 and the switch lever 31 is simplified.

[0061] According to the first embodiment, the battery attachment portion 40 is provided so as to be immovable relative to the handle 30. Therefore, the wiring path between the battery attachment portion 40 and the handle 30 is fixed, and the wiring structure is simplified.

[0062] According to the first embodiment, the electrical wiring 2 is routed between the base 10 and the cutting machine body 20. The base 10 is provided with a first wire holder 51 that extends from the battery attachment portion 40 and covers the electrical wiring 2. The cutting machine body 20 is provided with a second wire holder 52 that extends from near the electric motor 21 and covers the electrical wiring 2. The first wire holder 51 and the second wire holder 52 are connected to each other by an elastically deformable tilting intervening member 53 so as to be able to tilt relative to each other.

[0063] Therefore, the electrical wiring 2 arranged between the base 10 and the cutting machine body 20 is covered by the first wire holder 51, the second wire holder 52, and the tilting intervening member 53. The first wire holder 51 and the second wire holder 52 are tilted relative to each other by the tilting intervening member 53, thereby allowing the cutting machine body 20 to tilt relative to the base 10. The tilting intervening member 53 is elastically deformed, so that the electrical wiring 2 is kept covered even when the cutting machine body 20 is tilted. Figures 5 and 6 show a state in which the second tilting opening 53b of the horizontally U-shaped tilting intervening member 53 is displaced upward integrally with the swinging intervening member 54, causing the tilting intervening member 53 to elastically deform in the opening direction.

[0064] According to the first embodiment, the portable cutting machine 1 has a swing intervening member 54 that swingably connects the first wire holder 51 and the second wire holder 52 to each other. The swing center of the second wire holder 52 relative to the swing intervening member 54 coincides with the swing center (swing axis J2) of the cutting machine body 20. Therefore, movement of the electrical wiring caused by the swinging action of the cutting machine body 20 can be reduced.

[0065] According to the first embodiment, the base 10 is provided with an angular plate 12 that supports the cutting machine body 20 so that it can tilt. The cutting machine body 20 includes a motor housing 21a that covers the electric motor 21, and a fixed cover 23 that covers the cutting tool 22 that is rotated by the electric motor 21. The swinging intervening member 54 is disposed within an area defined by the angular plate 12, the motor housing 21a, the fixed cover 23, and the second wire holder 52. Therefore, the swinging intervening member 54 is disposed by utilizing the free space. This prevents the portable cutting machine 1 from becoming large in size.

[0066] According to the first embodiment, the swing intervening member 54 has a first swing opening 54a that opens in a first direction (rightward) along the swing axis J2 of the cutting machine body 20, and a second swing opening 54b that opens in a second direction (leftward) opposite to the first direction. The electric wire 2 is inserted into the swing intervening member 54 through the first swing opening 54a and the second swing opening 54b. Therefore, the path of the electric wire 2 in the swing intervening member 54 is simplified.

[0067] According to the first embodiment, the second wire holder 52 has a cylindrical second holder opening 52a that opens toward the second swing opening 54b of the swing intervention member 54. The second swing opening 54b of the swing intervention member 54 has a cylindrical shape and is rotatably connected to the second holder opening 52a of the second wire holder 52. In this way, the second wire holder 52 is rotatably connected to the second swing opening 54b of the swing intervention member 54 while suppressing displacement of the electrical wiring 2.

[0068] According to the first embodiment, the first wire holder 51 has a first holder opening 51a that opens toward the first swing opening 54a of the swing intervening member 54. The electric wiring 2 is inserted from the first holder opening 51a of the first wire holder 51 through the tilting intervening member 53 and the first swing opening 54a of the swing intervening member 54 into the swing intervening member 54. This suppresses displacement of the electric wiring 2 caused by the tilting operation of the cutting machine body 20, and simplifies the wiring path between the first wire holder 51 and the swing intervening member 54.

[0069] According to the first embodiment, the tilting intervening member 53 has a horizontal U-shape with a first tilting opening 53a at one end and a second tilting opening 53b at the other end. The electric wires 2 are inserted into the tilting intervening member 53 through the first tilting opening 53a and the second tilting opening 53b of the tilting intervening member 53. This prevents the electric wires 2 from being twisted due to the tilting operation of the cutting machine body 20.

[0070] Various modifications can be made to the above-described embodiment. A portable cutter 60 of a second embodiment is shown in Figures 12 and 13. The portable cutter 60 of the second embodiment is provided with a wiring cover 70 that is different from the wiring cover 50 of the first embodiment. The same members and configurations as those of the first embodiment are designated by the same reference numerals and their description will be omitted.

[0071] Moreover, the second embodiment includes a subgrip 61 that is different from the subgrip 19 of the first embodiment. As shown in FIG. 12, the subgrip 61 of the second embodiment is provided on the cutting machine body 20 side. Therefore, the relative position of the subgrip 61 with respect to the handle 30 changes. The position of the subgrip 61 with respect to the base 10 changes with the change in the left-right tilting attitude or the up-down swinging attitude of the cutting machine body 20. In the second embodiment, too, the portable cutting machine 60 can be moved and operated by holding the handle 30 with one hand and holding the subgrip 61 with the other hand. The subgrip 61 is not shown in FIG. 13.

[0072] In the portable cutting machine of the second embodiment, the handle 30 and the battery attachment portion 40 are also provided on the base 10, and the electric motor 21 and the controller 26 are provided on the cutting machine body 20. The electrical wiring 2 between the base 10 and the cutting machine body 20 is covered by a wiring cover 70.

[0073] The wiring cover 70 of the second embodiment has a first wire holder 71, a second wire holder 72, and an intervening member 75. The intervening member 75 has a tilting intervening member 73 and a swinging intervening member 74. The tilting intervening member 73 has a multi-joint structure including a first member 73a, a second member 73b, and a third member 73c.

[0074] The first wire holder 71 is fixed along the upper surface of the base 10. The rear part of the first wire holder 71 is joined to the handle base part 11. The electric wiring 2 connected to the switch body 32 and the battery attachment part 40 is routed from the handle base part 11 to the inside of the first wire holder 71.

[0075] The second wire holder 72 is fixed along, for example, an upper surface of the oscillating base portion 24 of the cutting machine body 20. A rear portion of the second wire holder 72 is connected to the main body housing 27 (near the electric motor 21). The electric wiring 2 connected to the controller 26 and the electric motor 21 is routed from the main body housing 27 into the second wire holder 72.

[0076] A first member 73a of the tilting intervening member 73 is connected to the front portion of the first wire holder 71. A cylindrical opening 71a is provided in the front portion of the first wire holder 71. A cylindrical opening 73d is provided on one end side of the first member 73a. The opening 73d of the first member 73a is rotatably connected to the opening 71a of the first wire holder 71. This allows the first member 73a to be connected to the front portion of the first wire holder 71 so as to be swingable up and down. The first member 73a extends mainly to the right from the front portion of the first wire holder 71. The electrical wiring 2 is routed from the inside of the first wire holder 71 to the inside of the first member 73a through the opening 71a and opening 73d.

[0077] A cylindrical opening 73e is provided on the other end side of the first member 73a. A cylindrical opening 73f is provided on one end side of the second member 73b. The opening 73e of the first member is rotatably connected to the opening 73f of the second member 73b. This allows the second member 73b to be connected to the other end side of the first member 73a so as to be able to swing up and down. The second member 73b extends mainly upward from the other end side of the first member 73a. The electrical wiring 2 is routed from the inside of the first member 73a to the inside of the second member 73b through the openings 73e and 73f.

[0078] A cylindrical opening 73g is provided at the other end of the second member 73b. A cylindrical opening 73h is provided at one end of the third member 73c. ​​The opening 73g of the second member 73b is rotatably connected to the opening 73h of the third member 73c. ​​This allows the third member 73c to be connected to the other end of the second member 73b so as to be able to swing up and down. The third member 73c extends mainly to the right from the other end of the second member 73b. The electrical wiring 2 is routed from inside the second member 73b to inside the third member 73c through the openings 73g and 73h.

[0079] A swinging intervening member 74 is provided integrally with the front surface of the other end side of the third member 73c. ​​The inside of the swinging intervening member 74 is in communication with the inside of the third member 73c. ​​The electric wiring 2 is routed from the inside of the third member 73c to the inside of the swinging intervening member 74.

[0080] A cylindrical opening 74a is provided in the upper left part of the oscillating intervening member 74. A cylindrical opening 72a is provided in the front right part of the second wire holder 72. The opening 72a of the second wire holder 72 is rotatably connected to the opening 74a of the oscillating intervening member 74. This allows the front part of the second wire holder 72 to be connected to the upper part of the oscillating intervening member 74 so as to be able to swing up and down. The electrical wiring 2 is routed from the inside of the oscillating intervening member 74 to the inside of the second wire holder 72 through the openings 74a and 72a.

[0081] The central axis of the opening 74a of the swing intervening member 74 and the central axis of the opening 72a of the second wire holder 72 coincide with the swing axis J2 of the cutting machine body 20. Therefore, like the first embodiment, the swing axis of the second wire holder 72 relative to the swing intervening member 74 coincides with the swing axis J2 relative to the base 10 of the cutting machine body 20. This simplifies the wiring path of the electrical wiring 2.

[0082] According to the second embodiment, even if the attitude (left / right tilt position or up / down swing position) of the cutting machine body 20 relative to the base 10 is changed, the handle 30 can be positioned independently of the attitude of the cutting machine body 20. This maintains good operability in moving the handle 30, allowing the user to move and operate the portable cutting machine 60 in a comfortable position.

[0083] According to the second embodiment, the electrical wiring 2 is routed between the base 10 and the cutting machine body 20. A first wire holder 71 extending from the battery attachment portion 40 and covering the electrical wiring 2 is provided on the base 10. A second wire holder 72 extending from near the electric motor 21 and covering the electrical wiring 2 is provided on the cutting machine body 20. The first wire holder 71 and the second wire holder 72 are connected to each other by a tilting intervening member 73 having a multi-joint structure so as to be able to tilt with each other. The electrical wiring 2 is inserted through the tilting intervening member.

[0084] Therefore, the electrical wiring 2 routed between the base 10 and the cutting machine body 20 is covered by the first wire holder 71, the second wire holder 72, and the tilting intervening member 73. The first wire holder 71 and the second wire holder 72 are tilted relative to each other by the tilting intervening member 73 with a multi-joint structure, thereby allowing the cutting machine body 20 to tilt relative to the base 10. The tilting intervening member 73 deforms due to its multi-joint structure, so that the electrical wiring 2 remains covered even when the cutting machine body 20 is tilted.

[0085] 14 to 18 show a portable cutter 80 of the third embodiment. The portable cutter 80 of the third embodiment has a wiring cover 90 that is different from the wiring covers 50, 70 of the first and second embodiments. The same members and configurations as those of the first and second embodiments are denoted by the same reference numerals and description thereof will be omitted.

[0086] The portable cutter 80 of the third embodiment has a handle base 11 and a sub-grip 19 on a base 10. A handle 30 is provided on the upper part of the handle base 11. A battery attachment part 40 is provided on the left side of the handle base 11 (see FIG. 8). An electric motor 21 and a controller 26 are provided on the cutting machine body 20. The electrical wiring 2 between the base 10 and the cutting machine body 20 is covered by a wiring cover 90. Although omitted in FIG. 14, a cover grip 28 is provided on the fixed cover 23 of the cutting machine body 20, which is mainly gripped when tilting the cutting machine body 20 (see FIGS. 1 to 7).

[0087] 14 to 16, the wiring cover 90 of the second embodiment has a first wire holder 91, a second wire holder 92, and an interposition member 93. The first wire holder 91 is fixed along the upper surface of the base 10. The rear part of the first wire holder 91 is joined to the handle base part 11. The electric wiring 2 connected to the switch main body 32 and the battery attachment part 40 is routed from the handle base part 11 to the inside of the first wire holder 91.

[0088] The second wire holder 92 is fixed along, for example, an upper surface of the oscillating base portion 24 of the cutting machine body 20. A rear portion of the second wire holder 92 is connected to the main body housing 27 (near the electric motor 21). The electric wiring 2 connected to the controller 26 and the electric motor 21 is routed from the main body housing 27 into the second wire holder 92.

[0089] An intervening member 93 is interposed between the first wire holder 91 and the second wire holder 92. The intervening member 93 has a hollow cylindrical shape. The intervening member 93 is made of resin, and in the third embodiment, for example, has a front and half split structure. The front and rear halves are screwed together at two points to form an integrated intervening member 93. In the drawing, the two screw-connected portions are indicated by the reference numeral 95.

[0090] The electrical wiring 2 is routed inside the interposed member 93. The electrical wiring 2 is also covered by the interposed member 93. The interposed member 93 has a first end 93a at the end on the first wire holder 91 side, and a second end 93b at the end on the second wire holder 92 side. The first end 93a functions as a tilting connector for the first wire holder 91, and the second end 93b functions as a swinging connector for the second wire holder 92.

[0091] As shown in Figures 15 and 17, the first end 93a of the interposition member 93 has a cylindrical shape. The first end 93a is embedded in a first holder opening 91a provided on the upper surface of the right end of the first wire holder 91. As shown in Figure 15, shaft portions 93f protrude coaxially from the front and rear surfaces of the first end 93a. The first end 93a is embedded in the first holder opening 91a with the front and rear shaft portions 93f resting on the front and rear edges of the first holder opening 91a.

[0092] The first end 93a is connected to the first holder opening 91a with the axis of the shaft 93f oriented along the front-rear direction (the direction perpendicular to the paper surface of FIG. 16). This allows the intervening member 93 to be rotatably connected to the first wire holder 91 left and right (around the axis of the shaft 93f of the first end 93a). The rotation center of the intervening member 93 (the axis of the shaft 93f) coincides with the tilting axis J1 (main body tilting support shaft 14) of the cutting machine main body 20.

[0093] An opening 93c through which the electrical wiring 2 is inserted is provided on a side of the first end portion 93a. The electrical wiring 2 is routed from inside the first wire holder 91 to inside the intervening member 93 through the opening 93c. The opening 93c is not exposed to the outside from the first holder opening 91a over the entire rotation range of the first end portion 93a (the entire tilting range of the cutting machine body 20). Therefore, the electrical wiring 2 is always covered by the wiring cover 90 at the tilt connection portion of the intervening member 93 relative to the first wire holder 91.

[0094] A widened portion 93d is provided in the middle of the wiring path of the interposed member 93. In the third embodiment, the widened portion 93d is provided substantially adjacent to the first end portion 93a. The widened portion 93d widens the internal space, thereby improving the workability of the wiring operation of the electric wiring 2.

[0095] The second end 93b of the intervening member 93 has a cylindrical swing opening 93e. The swing opening 93e is connected to the second holder opening 92a of the second wire holder 92 so as to be rotatable relative to the second holder opening 92a. The rotation axis of the swing opening 93e relative to the second holder opening 92a coincides with the swing axis J2 of the cutting machine body 20. The intervening member 93 is connected to the mounting portion 13b of the support bracket 13 by a fixing screw 94. This allows the intervening member 93 to tilt left and right integrally with the support bracket 13 (integral with the cutting machine body 20).

[0096] According to the third embodiment, even if the attitude of the cutting machine body 20 relative to the base 10 is changed, the handle 30 is held in an easy-to-grip attitude, so that the mobility and operability of the portable cutting machine 80 is maintained excellent.

[0097] According to the third embodiment, the electrical wiring 2 routed between the base 10 and the cutting machine body 20 is covered with a wiring cover 90 having a first wire holder 91, a second wire holder 92, and an intervening member 93. The first wire holder 91 and the second wire holder 92 are connected to each other via the intervening member 93. A first end 93a of the intervening member 93 tilts left and right relative to the first wire holder 91, thereby allowing the cutting machine body 20 to tilt relative to the base 10. The electrical wiring 2 remains covered with the wiring cover 90 even when the cutting machine body 20 tilts.

[0098] According to the third embodiment, the first wire holder 91 and the second wire holder 92 are connected to each other so as to be able to swing with each other by the intervening member 93. The center of swing of the second wire holder 92 relative to the intervening member 93 coincides with the swing axis J2 of the cutting machine body 20. Therefore, movement of the electric wiring 2 caused by the swinging action of the cutting machine body 20 can be reduced.

[0099] According to the third embodiment, the intervening member 93 is disposed within the area defined by the angular plate 12, the motor housing 21a, the fixed cover 23, and the second wire holder 92. Therefore, the intervening member 93 is disposed in the free space, which prevents the portable cutting machine 80 from becoming large.

[0100] According to the third embodiment, the cutting machine body 20 is provided so as to be swingable in a direction different from the tilting motion. The second wire holder 92 has a cylindrical second holder opening 92a that opens toward the swing opening 93e of the intervening member 93. The swing opening 93e of the intervening member 93 is cylindrical and rotatably connected to the second holder opening 92a of the second wire holder 92. Therefore, the second wire holder 92 is rotatably connected to the swing opening 93e of the intervening member 93 while suppressing displacement of the electric wiring 2.

[0101] According to the third embodiment, the first wire holder 91 has a first holder opening 91a that opens toward the interposed member 93. The electric wiring 2 is inserted into the interposed member 93 through the first holder opening 91a of the first wire holder 91. Therefore, displacement of the electric wiring 2 accompanying the tilting operation of the cutting machine body 20 is suppressed, and the wiring path between the first wire holder 91 and the interposed member 93 is simplified.

[0102] According to the third embodiment, the intervening member 93 has an integral shape having a first end 93a at one end and a second end 93b at the other end. An opening 93c is provided at the first end 93a, and a swing opening 93e is provided at the second end 93b. The electric wire 2 is inserted into the intervening member 93 through the opening 93c of the first end 93a and the swing opening 93e of the second end 93b. Therefore, twisting of the electric wire 2 caused by the tilting or swinging operation of the cutting machine body 20 is suppressed.

[0103] According to the third embodiment, the first end 93a of the interposed member 93 is cylindrical, is embedded in the first wire holder 91, and constitutes the tilting center (tilting connection portion) of the first wire holder 91. Therefore, the interposed member 93 tilts left and right about the cylindrical first end 93a embedded in the first wire holder 91.

[0104] According to the third embodiment, an opening 93c through which the electric wire 2 is inserted is provided at the first end 93a. The opening 93c is covered by the first wire holder 91 over the entire tilting range of the cutting machine body 20. Therefore, the electric wire 2 is not exposed from the first wire holder 91 over the entire tilting range of the cutting machine body 20.

[0105] According to the third embodiment, the widened portion 93d is provided midway along the wiring path of the interposition member 93. This facilitates the wiring operation of the electric wires 2.

[0106] Further modifications can be made to the first, second and third embodiments described above. For example, the cutting machine has been illustrated as being moved while the vertical swing position of the cutting machine body 20 (the cutting depth of the blade 22) is fixed, but the handle separation structure and wiring cover illustrated as examples can be applied to a so-called plunge-cut saw in which the cutting machine body is swung downward to cause the blade to cut.

[0107] In the first, second and third embodiments, a rechargeable portable cutting machine 1, 60 to which a battery pack 45 can be attached as a power source is exemplified, but the handle separation structure and wiring cover exemplified can also be applied to an AC-powered portable cutting machine.

[0108] Although the portable cutting machines 1, 60, and 80 in which the cutting machine body 20 is supported so as to be tiltable left and right and swingable up and down have been exemplified, the handle separation structure and each type of wiring cover structure exemplified for a portable cutting machine in which the cutting machine body can be tilted only left and right can also be applied. The same can be applied to a case in which the swing direction is a displacement operation in a direction other than the tilting operation in the left and right direction, for example.

[0109] Although the configuration in which the rotation center of the oscillating intervening member 54, 74 and the second wire holder 52, 72 (first and second embodiments) and the rotation center of the second end 93b and the second wire holder 92 (third embodiment) are aligned with the oscillation axis J2 has been illustrated, slight misalignment is permissible. In this case, the misalignment can be absorbed by, for example, elastically deforming the oscillating intervening member or the second end.

[0110] In the first and second embodiments, a configuration is illustrated in which the oscillating intervening member 54, 74 and the second wire holder 52, 72 are connected by a rotation axis that is coaxial with the oscillating axis J2 of the cutting machine body 20, but the oscillating intervening member may be changed to a transverse U-shaped, elastically deformable oscillating intervening member like the tilting intervening member 53.

[0111] In the first and second embodiments, the tilting intervening members 53, 73 and the swinging intervening members 54, 74 may be changed to a bellows-type cover body or a flexible bag-shaped cover body.

[0112] In the first and second embodiments, the configuration having both the tilting intervening member 53, 73 and the swinging intervening member 54, 74 has been exemplified, but only the tilting intervening member 53, 73 or only the swinging intervening member 54, 74 may be used.

[0113] In the second embodiment, three joint structures including the first to third members 73a, 73b, and 73c are illustrated, but the second and third members 73b and 73c may be omitted or replaced with elastic covers, for example, and may be replaced with at least one joint structure. A multi-joint structure having a larger number of joints may also be used.

[0114] The portable cutting machine 1 of the first embodiment, the portable cutting machine 60 of the second embodiment, and the portable cutting machine 80 of the third embodiment are examples of portable cutting machines in one aspect of the present disclosure. The workpiece W of the first, second, and third embodiments is an example of a workpiece in one aspect of the present disclosure. The base 10 of the first, second, and third embodiments is an example of a base in one aspect of the present disclosure. The electric motor 21 of the first, second, and third embodiments is an example of an electric motor in one aspect of the present disclosure.

[0115] The cutting machine body 20 of the first, second and third embodiments is an example of a cutting machine body according to one aspect of the present disclosure. The battery pack 45 of the first, second and third embodiments is an example of a battery according to one aspect of the present disclosure. The battery attachment section 40 of the first, second and third embodiments is an example of a battery attachment section according to one aspect of the present disclosure. The handle 30 of the first, second and third embodiments is an example of a handle according to one aspect of the present disclosure.

[0116] The portable cutting machine 1 of the first embodiment, the portable cutting machine 60 of the second embodiment, and the portable cutting machine 80 of the third embodiment are examples of portable cutting machines in other aspects of the present disclosure. The workpiece W of the first, second, and third embodiments is an example of a workpiece in other aspects of the present disclosure. The base 10 of the first, second, and third embodiments is an example of a base in other aspects of the present disclosure. The electric motor 21 of the first, second, and third embodiments is an example of an electric motor in other aspects of the present disclosure.

[0117] The cutting machine body 20 of the first, second and third embodiments is an example of a cutting machine body in another aspect of the present disclosure. The handle 30 of the first, second and third embodiments is an example of a handle in another aspect of the present disclosure. The switch lever 31 of the first, second and third embodiments is an example of a switch lever in another aspect of the present disclosure. [Explanation of symbols]

[0118] W…Material to be cut 1. Portable cutting machine 2. Electrical wiring 10. Bass 10a...Groove, 10b...Frame 11…Handle base 12...Angular plate 12a...Slot hole 13…Support bracket 13a...swing support portion, 13b...mounting portion 14…Body tilting support shaft 15...Main body swing shaft 16…Fixed lever 16a…Fixing screw 17…Depth Guide 17a…Spindle 18…Fixed lever 18a…Fixing screw 19…Subgrip J1…Tilt axis J2: Swing axis 20…Cutting machine body 21...Electric motor 21a…Motor housing 22...cutting tools 23…Fixed cover 24...Swinging base 25…Movable cover 26…Controller 27…Main housing 28…Cover grip 30…Handle 31…Switch lever 32…Switch body 40…Battery mounting section 41,42...Connection terminals 43,44…Guide rail 45…Battery pack 45a…Unlock button 50...Wiring cover (first embodiment) 51…First wire holder 51a...first holder opening, 51b...connection port, 51c...upper holder part, 51d...lower holder part 52…Second wire holder 52a... second holder opening, 52b... upper holder portion, 52c... lower holder portion 53…Tilt intervening member 53a...first tilting opening, 53b...second tilting opening 54...Swinging intervening member 54a...first swing opening, 54b...second swing opening 55…Fixing screw 56...Interposition member (first embodiment) 60...Portable cutting machine (second embodiment) 61...Subgrip 70...Wiring cover (second embodiment) 71…First wire holder 71a...Aperture 72…Second wire holder 72a…Aperture 73…Tilt intervening member 73a: first member, 73b: second member, 73c: third member 73d, 73e, 73f, 73g, 73h...Opening 74...Swinging intervening member 74a…Aperture 75: Interposition member (second embodiment) 80...Portable cutting machine (third embodiment) 90...Wiring cover (third embodiment) 91…First wire holder 91a...First holder opening 92…Second wire holder 92a...Second holder opening 93...Interposition member (third embodiment) 93a...first end, 93b...second end, 93c...opening, 93d...widened part 93e: Swing opening, 93f: Shaft 94…Fixing screw 95...Threaded joint

Claims

1. A portable cutting machine, A base that comes into contact with the material to be cut, A cutting machine body is tiltably supported on the aforementioned base and is equipped with an electric motor, A battery mounting section into which the battery, which is the power source for the electric motor, can be detachably attached, A portable cutting machine equipped with a handle that is provided on the base and is held by the user, independently of the tilting motion of the cutting machine body.

2. A portable cutting machine according to claim 1, The cutting machine body is provided so as to be able to swing in a direction different from the tilting motion, A portable cutting machine in which the handle is mounted on the base independently of the oscillating motion of the cutting machine body.

3. A portable cutting machine according to claim 1 or 2, A portable cutting machine in which the handle is mounted on the base so as not to move relative to it.

4. A portable cutting machine according to claim 1 or 2, The handle is provided with a switch lever for starting the electric motor. A portable cutting machine having the battery mounting section provided adjacent to the handle.

5. A portable cutting machine according to claim 4, A portable cutting machine in which the battery mounting portion is provided so as not to move relative to the handle.

6. A portable cutting machine according to claim 1 or 2, Electrical wiring is routed between the base and the cutting machine body. The base is provided with a first wire holder that extends from the battery mounting portion and covers the electrical wiring. The cutting machine body is provided with a second wire holder that extends from near the electric motor and covers the electrical wiring. A portable cutting machine in which the first wire holder and the second wire holder are connected to each other so as to be tiltable by an elastically deformable intervening member, and the electrical wiring is inserted through the intervening member.

7. A portable cutting machine according to claim 1 or 2, Electrical wiring is routed between the base and the cutting machine body. The base is provided with a first wire holder that extends from the battery mounting portion and covers the electrical wiring. The cutting machine body is provided with a second wire holder that extends from near the electric motor and covers the electrical wiring. A portable cutting machine in which the first wire holder and the second wire holder are connected to each other so as to be tiltable by an intervening member having one joint structure or a multi-joint structure, and the electrical wiring is inserted through the intervening member.

8. A portable cutting machine according to claim 1 or 2, Electrical wiring is routed between the base and the cutting machine body. The base is provided with a first wire holder that extends from the battery mounting portion and covers the electrical wiring. The cutting machine body is provided with a second wire holder that extends from near the electric motor and covers the electrical wiring. A portable cutting machine in which an intervening member is provided between the first wire holder and the second wire holder, the first end of the intervening member is connected to the first wire holder so as to be tiltable in the left-right direction, the second end of the intervening member is connected to the second wire holder, and the electrical wiring is inserted through the intervening member.

9. A portable cutting machine according to claim 6, The cutting machine body is provided so as to be able to swing in a direction different from the tilting motion, A portable cutting machine in which the first wire holder and the second wire holder are connected to each other so as to be able to swing relative to the intervening member, and the pivot point of the second wire holder relative to the intervening member coincides with the pivot point of the cutting machine body.

10. A portable cutting machine according to claim 9, The base is provided with an angular plate that tiltably supports the cutting machine body. The cutting machine body comprises a motor housing that covers the electric motor and a fixed cover that covers the cutting tool rotated by the electric motor. A portable cutting machine in which the intervening member is positioned within an area defined by the angular plate, the motor housing, the fixing cover, and the second wire holder.

11. A portable cutting machine according to claim 9, The intervening member comprises a tilting intervening member that allows the tilting motion of the cutting machine body and a swinging intervening member that allows the swinging motion of the cutting machine body. The oscillating intervening member has a first oscillating opening that opens in a first direction along the oscillating center of the cutting machine body, and a second oscillating opening that opens in a second direction opposite to the first direction. A portable cutting machine in which the electrical wiring is inserted into the oscillating intervening member through the first oscillating opening and the second oscillating opening.

12. A portable cutting machine according to claim 6, The cutting machine body is provided so as to be able to swing in a direction different from the tilting motion, The second wire holder has a cylindrical shape and a second holder opening that opens toward the swing opening of the intervening member, The swinging opening of the intervening member is cylindrical in shape and rotatably connected to the second holder opening of the second wire holder, making it a portable cutting machine.

13. A portable cutting machine according to claim 9, The first wire holder has a first holder opening that opens toward the intervening member, A portable cutting machine in which the electrical wiring is inserted into the intervening member through the first holder opening of the first wire holder.

14. A portable cutting machine according to claim 6, The intervening member has a horizontal U-shape with a first tilting opening at one end and a second tilting opening at the other end, and the electrical wiring is inserted into the intervening member through the first and second tilting openings, in a portable cutting machine.

15. A portable cutting machine according to claim 8, The first end of the intervening member is cylindrical and embedded in the first wire holder, forming the tilting center of the intervening member, for a portable cutting machine.

16. A portable cutting machine according to claim 15, A portable cutting machine having an opening at the first end through which the electrical wiring is inserted, wherein the opening is covered by the first wire holder over the entire tilting range of the cutting machine body.

17. A portable cutting machine according to claim 8, A portable cutting machine having a widened section in the middle of the wiring path of the intervening member.

18. A portable cutting machine, A base that comes into contact with the material to be cut, A cutting machine body is tiltably supported on the aforementioned base and is equipped with an electric motor, A handle is provided on the base, independently of the tilting motion of the cutting machine body, and is held by the user. A portable cutting machine having a switch lever on the handle for starting the electric motor.

19. A portable cutting machine according to either claim 1 or 18, The cutting machine body is a portable cutting machine having a gripping part for gripping during tilting operation.

Images