Work machine

Abstract

The invention improves operability of a working machine. An electric planer (1) having a planar rear base (3) is provided with: a housing (2); a drive unit (13) housed inside the housing (2) and including an electric motor (6), a drive shaft driven by the electric motor (6), and a gang mill (8) provided on the drive shaft; a power supply unit (4) that is detachably attached to the housing (2) and that supplies power to the drive unit (13); a first grip part (9) provided on one side of the housing (2) in a predetermined direction; and a second grip section (10) provided on the other side of the housing (2) in the predetermined direction. The power supply unit (4) is fitted between the first gripping unit (9) and the second gripping unit (10) in a predetermined direction.

Description

Technical Field

[0001] The present invention relates to a working machine. Background Art

[0002] Conventionally, an electric planer using an electric motor as a driving source has been used for surface finishing, size adjustment of wood, etc. Patent Document 1 discloses an electric planer to which a power supply unit is detachably mounted.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2015-127114 Summary of the invention

[0006] Problems to be solved by the invention

[0007] However, there is a demand for improved operability of working machines.

[0008] Solutions to Solve Problems

[0009] The working machine of the first embodiment of the present invention is a working machine having a planar working part. The working machine comprises: a housing; a driving part which is housed inside the housing and includes a motor, a driving shaft driven by the motor, and a processing part provided on the driving shaft; a power supply part which is detachably mounted on the housing and supplies power to the driving part; a first gripping part which is provided on one side of the housing in a predetermined direction; and a second gripping part which is provided on the other side of the housing in the predetermined direction. The power supply part is mounted between the first gripping part and the second gripping part in the predetermined direction.

[0010] The working machine of the second scheme of the present invention is a working machine having a planar working part. It is provided with: a housing; a driving part, which is housed inside the housing and includes a motor, a driving shaft driven by the motor, and a processing part provided on the driving shaft; a power supply part, which is detachably mounted on the housing and supplies power to the driving part; a first gripping part, which is provided on one side of the housing in a predetermined direction; and a second gripping part, which is provided on the other side of the housing in the predetermined direction. The center of gravity when the power supply part is mounted is located between the first gripping part and the second gripping part in the predetermined direction.

[0011] The working machine of the third embodiment of the present invention is a working machine having a planar working part. The working machine comprises: a housing; a driving part which is housed inside the housing and includes a motor, a driving shaft driven by the motor, and a processing part provided on the driving shaft; a first gripping part which is provided on one side of the housing in a predetermined direction; a second gripping part which is provided on the other side of the housing in the predetermined direction; and a wall part which protrudes relative to the second gripping part in a direction intersecting the predetermined direction and in a planar direction of the working part.

[0012] The working machine of the fourth aspect of the present invention comprises: a motor; a processing part that rotates by the driving force of the motor; a working part that supports the processing part; a front base that can move up and down relative to the working part; and a lifting mechanism that is operated by an operator to move the front base up and down. The lifting mechanism has an adjustment mechanism that can adjust the operating load when the front base is moved up and down.

[0013] The working machine of the fifth scheme of the present invention is a working machine capable of performing processing work toward the front, and comprises: a motor; a housing that stores the motor; a gripping portion that is provided on the housing and is provided with a switch that can be operated by an operator; a controller that controls the motor based on the operation of the switch; a processing portion that rotates by the driving force of the motor; a working portion that supports the processing portion; a front base that can move up and down relative to the working portion; and a lifting mechanism that is operated by the operator to move the front base up and down. The controller is arranged in front of the switch and above the motor.

[0014] Effects of the Invention

[0015] According to the present invention, the operability of the working machine can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a side view of the appearance of the electric planer according to the embodiment.

[0017] Figure 2 It is a cross-sectional view of an electric planer.

[0018] Figure 3 It is a cross-sectional view of an electric planer.

[0019] Figure 4 It is a three-dimensional view of the inside of an electric planer.

[0020] Figure 5 It is a partial cross-sectional view showing the vicinity of the lifting mechanism of the electric planer. (B) shows a state where the spacer member 16A is moved downward from the state of (A).

[0021] Figure 6It is a partial cross-sectional view showing the vicinity of the lifting mechanism of the electric planer. (B) shows a state where the grip 9A is moved upward from the state of (A).

[0022] Figure 7 It is a perspective view of the electric planer in a state where the left side of the second grip is removed.

[0023] Figure 8 This is the rear appearance of the electric planer.

[0024] Fig. 9 The figures schematically show the center of gravity of the electric planer. (A) is an electric planer according to the embodiment, and (B) is an electric planer according to a comparative example.

[0025] Fig.10 It is a side view of the appearance of the electric planer according to the first modified example.

[0026] Fig.11 It is a cross-sectional view of an electric planer according to a first modified example.

[0027] Fig.12 This is a rear external view of an electric planer according to a first modified example.

[0028] Fig.13 It is a partial cross-sectional view showing the vicinity of the lifting mechanism of the electric planer according to the first modified example.

[0029] Fig.14 (A) is a partial side view of the electric planer of a modified example, and (B) is a partial cross-sectional view of (A).

[0030] Fig.15 1 and 2 are side views of the electric planer according to the second modification. (A), (B), and (C) respectively show different holding states of the power supply unit 4.

[0031] Fig.16 It is an external view of the right side of the electric planer according to the third modified example.

[0032] Fig.17 It is a cross-sectional view of an electric planer according to a third modified example.

[0033] Fig.18 is along Fig.16 A cross-sectional view of the electric planer along line B-B is shown.

[0034] Fig.19 The following are side views of the appearance of a belt sander according to a fourth modified example. (A) is a side view as viewed from the left side, and (B) is a side view as viewed from the right side. DETAILED DESCRIPTION

[0035] An electric planer as a working machine according to an embodiment will be described with reference to the drawings.

[0036] Figure 1 is a side view of the appearance of the electric planer 1, Figure 2 yes Figure 1 A cross-sectional view of the electric planer 1. In addition, Figure 3 is along Figure 1 A cross-sectional view of the electric planer 1 along line A-A, Figure 4 1 is a perspective view of the inside of the electric planer 1. The electric planer 1 includes a housing (casing) 2, a rear base 3, a power supply unit 4, a control unit 5 (controller), an electric motor 6, a fan 7, a combination milling cutter 8 with a tool 8A mounted thereon, a first grip 9 (sub-handle), a second grip 10 (main handle), and a lifting mechanism 15. The electric planer 1 drives the electric motor 6 using the electric power supplied from the power supply unit 4, and rotates the combination milling cutter 8 using the driving force of the electric motor 6, thereby being able to perform cutting processing on the material to be cut.

[0037] In addition, in the following description, Figure 1 to Figure 4 In the figure, the direction in which the first grip 9 is provided with respect to the power supply unit 4 is defined as the front direction, and the opposite direction (the direction in which the second grip 10 is provided with respect to the power supply unit 4) is defined as the rear direction. In addition, the direction in which the rear base 3 is provided with respect to the housing 2 is defined as the lower direction, and the opposite direction (the direction in which the power supply unit 4 is provided with respect to the housing 2) is defined as the upper direction. Furthermore, the direction to the right of the electric planer 1 viewed from the rear direction is defined as the right direction, and the opposite direction is defined as the left direction. The front-back direction corresponds to the predetermined direction in the present invention.

[0038] <Shell 2> As Figure 1 As shown, the housing 2 constitutes the outer contour of the electric planer 1, and the rear base 3 is installed on the lower end surface (lower end surface) of the housing 2. The housing 2 includes a main housing 21, a gear housing 22, a front housing 23, and a rear housing 24. Figure 2 As shown, a motor housing portion 2A and a wiring housing portion 2C are formed inside the housing 2 .

[0039] The main body housing 21 is a part constituting the main body of the electric planer 1. The main body housing 21 is provided with an electric motor 6, a fan 7, a combined milling cutter 8, and a chip discharge part 11. A motor housing part 2A for housing the electric motor 6 is formed at the approximate center of the interior of the main body housing 21 in the front-back direction, and a suction port (not shown) is formed on the right side of the main body housing 21. The suction port is a plurality of holes connecting the outside of the housing 2 and the motor housing part 2A. In addition, a wiring housing part 2C is formed as a space (wiring space) for housing the wiring 50A described later on the upper side of the portion of the interior of the main body housing 21 where the electric motor 6 is housed, that is, on the upper side of the motor housing part 2A. The wiring housing part 2C extends toward the rear on the upper side of the motor housing part 2A, that is, on the upper side of the electric motor 6. In other words, the wiring housing part 2C extends toward the rear from the lower part of the front connecting part 10B of the second gripping part 10 described later connected to the main body housing 21. The wiring housing portion 2C is a space partially bent along the outer circumference of the electric motor 6 .

[0040] The gear housing 22 is provided on the left side of the main housing 21. The gear housing 22 closes the left side of the main housing 21 to prevent fan wind flowing to a chip discharge hole 11A described later from spreading to the outside of the housing 2. The gear housing 22 is formed with an air intake port 24B.

[0041] The front housing 23 is integrally provided with the main housing 21 in front of the main housing 21. The front housing 23 supports the front base 33 that moves up and down when adjusting the cutting depth during cutting. The rear housing 24 is integrally provided with the main housing 21 in the rear of the main housing 21. The wiring 50B described later is housed in the rear housing 24.

[0042] <Rear Base 3> The rear base 3 is a planar working portion that comes into contact with the upper surface of a workpiece when cutting is performed using the electric planer 1. The rear base 3 is formed in a substantially rectangular shape in a plane parallel to the front-rear direction and the left-right direction.

[0043] <Electric Motor 6> The electric motor 6 is stored in the motor storage portion 2A. Figure 3 As shown, the rotating shaft 6A is provided. The rotating shaft 6A is a shaft extending in the left-right direction across the main housing 21 and the gear housing 22. The rotating shaft 6A is supported by a ball bearing 21A provided on the right side of the main housing 21 and a ball bearing 22A provided on the left side so as to be rotatable. In addition, a pulley 6B is provided at the left end of the rotating shaft 6A and is housed in the gear housing 22.

[0044] The electric motor 6 is, for example, a brush motor, and is configured to be controllable by the control unit 5 described later. The electric motor 6 is electrically connected to the power supply unit 4 via the wiring 50B, and is driven by receiving the power supply from the power supply unit 4. The rotating shaft 6A and the pulley 6B are driven to rotate by the electric motor 6. In other words, the rotating shaft 6A is a drive shaft driven by the electric motor 6. In addition, the electric motor 6 is electrically connected to the control unit 5 described later via the wiring 50A, and the rotation drive is controlled by the control unit 5.

[0045] <Fan 7> Fan 7 is disposed near the boundary between body housing 21 and gear housing 22 and is provided coaxially with rotating shaft 6A of electric motor 6. Fan 7 is driven to rotate together with rotating shaft 6A by driving electric motor 6 to generate fan wind in housing 2.

[0046] <Combined milling cutter 8> The combined milling cutter 8 is a component having a substantially cylindrical shape extending in the left-right direction, and is provided in front of and below the electric motor 6 in a manner rotatable relative to the main body housing 21 and the gear housing 22. The axis of the combined milling cutter 8 has a positional relationship substantially parallel to the axis of the rotating shaft 6A of the electric motor 6. The combined milling cutter 8 has a combined milling cutter shaft 8B, and a plate-shaped tool 8A extending in the left-right direction is mounted on the outer periphery.

[0047] The combined milling cutter shaft 8B is a shaft extending in the left-right direction across the main body housing 21 and the gear housing 22. The combined milling cutter shaft 8B is rotatably supported by a ball bearing 21B provided on the right side of the main body housing 21 and a ball bearing 22B provided on the left side. A pulley 8C is provided on the left end side of the combined milling cutter shaft 8B and is housed in the gear housing 22. The pulley 8C and the pulley 6B of the rotating shaft 6A are connected by a belt 6C housed in the gear housing 22. Therefore, the rotational force of the rotating shaft 6A is transmitted to the combined milling cutter shaft 8B via the pulley 6B, the belt 6C and the pulley 8C. The tool 8A is installed in a detachable manner at two locations symmetrically centered on the axis of the combined milling cutter 8 (refer to Figure 4 ) In other words, the combined milling cutter 8 is provided on the rotating shaft 6A as a driving shaft, and is a processing portion that processes a workpiece.

[0048] In the electric planer 1 of the present embodiment, the electric motor 6 , the rotating shaft 6A, and the combined cutter 8 described above constitute a driving unit 13 .

[0049] <Chip discharge section 11> Figure 2As shown, the chip discharge portion 11 is provided in front of the electric motor 6, and is formed with a chip discharge hole 11A, a connection hole 11B, and an introduction hole 11C. The chip discharge hole 11A is a hole that penetrates the main housing 21 in the left-right direction, and extends approximately parallel to the axial direction (left-right direction) of the rotating shaft 6A of the electric motor 6. The chip discharge hole 11A is formed above the combined milling cutter 8 and in front of the electric motor 6. The right opening end of the chip discharge hole 11A corresponds to an exhaust port.

[0050] The left opening end of the chip discharge hole 11A and the left end of the motor housing portion 2A are connected by a connecting hole 11B. The connecting hole 11B is connected by a fan guard 7A (see Figure 4 ) is blocked from above. Therefore, the fan wind generated by the fan 7 is suppressed from flowing toward the motor housing portion 2A side, and flows from the motor housing portion 2A to the chip discharge hole 11A via the connecting hole 11B. The introduction hole 11C is formed in a portion of the main housing 21 that is opposite to the front upper side of the combined milling cutter 8. The chips generated by the cutting process of the combined milling cutter 8 are introduced into the chip discharge hole 11A via the introduction hole 11C, and are discharged to the outside of the housing 2 from the opening end on the right side of the chip discharge hole 11A.

[0051] <Power supply unit 4> The power supply unit 4 is a battery pack that is detachably mounted on a mounting portion 12 provided on a second grip portion 10 described later. The power supply unit 4 is a rectangular parallelepiped, and a battery pack (battery unit) composed of a plurality of lithium battery cells and the like is stored inside. When the power supply unit 4 is mounted on the electric planer 1, it is electrically connected to a connection terminal 12A provided on the mounting portion 12 described later. The power supply unit 4 supplies power to a drive unit 13 having an electric motor 6 under the control of a control unit 5.

[0052] <Control unit 5 (controller)> The control unit 5 is provided above the electric motor 6 and is housed in the control unit housing portion 2B provided near the lower end of the front connecting portion 10B described later. In other words, the control unit 5 is arranged at a position (above) farther from the rear base 3 than the electric motor 6 in the vertical direction perpendicular to the rear base 3. The control unit 5 controls the power supply from the power supply unit 4 to the driving unit 13 having the electric motor 6 and the driving of the electric motor 6 according to the operation of the trigger switch 10E. The control unit 5 is equivalent to the controller of the present invention.

[0053] <Lifting mechanism 15> Figure 5 (A) Figure 5(B) is a partial cross-sectional view showing the vicinity of the lifting mechanism 15 of the electric planer 1. The lifting mechanism 15 is operated by a user (operator) and is used to move the front base 33 up and down (lift and lower). The lifting mechanism 15 includes the front base 33, the first gripping portion 9, and the rotating shaft 9D. In addition, the lifting mechanism 15 has an adjustment mechanism 16 (described later) that can adjust the operating load when the front base 33 is moved up and down. By moving the front base 33 up and down, the cutting depth into the cut material during cutting can be adjusted. That is, the lifting mechanism 15 functions as a mechanism for adjusting the cutting depth.

[0054] <Front base 33> The front base 33 supported by the front shell 23 is a part of the lifting mechanism 15, and has a base 33A and an internal thread 33B. The lower part of the base 33A is formed into a roughly rectangular shape on a surface parallel to the front-to-back direction and the left-to-right direction. During operation, the lower surface (bottom surface) of the base 33A slides on the workpiece. The lower part of the base 33A is arranged near the lower end surface of the front shell 23. Inside the front shell 23, the internal thread 33B extending in the up-down direction is mounted on the base 33A by a fixing mechanism such as pressing. The base 33A and the internal thread 33B are different components, but they can also be formed by one component.

[0055] <First grip 9> The first grip 9 includes a grip 9A and a nut 9F fixed to the inside of the grip 9A. The grip 9A is provided at the upper part of the front housing 23. The lower end of the grip 9A is located above the upper end 25 of the housing 2. That is, the grip 9A is provided at a position (i.e., above) farther from the rear base 3 than the vertex position of the housing 2, i.e., the upper end 25. When using the electric planer 1, the user (operator) grips the grip 9A with one hand or fingers. In addition, the grip 9A is connected to the rotating shaft 9D via a nut 9F threadedly coupled to (near the upper end of) the rotating shaft 9D. That is, the first grip 9 is threadedly coupled to the rotating shaft 9D. Therefore, the first grip 9 can be relatively moved (screwed) in the upper and lower directions relative to the rotating shaft 9D. In addition, as described later, the grip 9A functions as a member for performing a rotation operation when adjusting the operating load of the lifting mechanism 15.

[0056] The nut 9F is a metal nut (nylon nut) having a nylon ring built in the upper part, and the nylon ring can prevent the grip 9A from rotating easily relative to the rotation shaft 9D. The nut 9F is fixed inside the resin grip 9A by a fixing mechanism such as integral molding.

[0057] <Rotation shaft 9D> The rotation shaft 9D is provided inside the grip 9A and the front housing 23 along the up-down direction. That is, a portion of the rotation shaft 9D is located inside the grip 9A. The upper portion of the rotation shaft 9D is formed as an external thread, which is threadedly engaged with the nut 9F. An external thread 9E is formed at the lower portion of the rotation shaft 9D, which is threadedly engaged with the internal thread 33B located in the above-mentioned front housing 23. The rotation shaft 9D is configured to be rotatable by operating at least one of the grip 9A or the operating portion 9C, which will be described in detail later.

[0058] <Adjustment mechanism 16> The adjustment mechanism 16 is a mechanism that adjusts the operating load when the front base 33 is moved up and down (the load of the lifting and lowering operation performed by the lifting mechanism 15). Specifically, the adjustment mechanism 16 is a mechanism that can adjust the friction force generated by the rotating shaft 9D. That is, the adjustment mechanism 16 is a mechanism that can adjust the size of the load applied in the operation of rotating the grip portion 9A or the operating portion 9C. The rotating shaft 9D slides with the front housing 23, and the above-mentioned friction force is generated by the sliding of the rotating shaft 9D and the front housing 23, but the adjustment mechanism 16 can change the size of the friction force. Figure 5 The rotating shaft 9D shown generates friction with the friction force generating portion P1 which is a sliding portion of the front housing 23. The adjustment mechanism 16 includes a spacer member 16A, an operating portion 9C, and an elastic body 16B.

[0059] <Spacer 16A> The spacer 16A is disposed between the upper surface of the front housing 23 and the lower end surface of the grip 9A. The spacer 16A is formed in an annular shape, and the rotation shaft 9D is disposed in the hole 16C. The spacer 16A contacts the lower end surface of the grip 9A at the upper end and contacts the elastic body 16B at the lower end. The spacer 16A is formed by a screw member 16D (see Figure 3 ) is fixed to the rotating shaft 9D.

[0060] If the threaded component 16D is loosened, the hole portion 16C becomes larger, and the fixing force of the spacer component 16A relative to the rotating shaft 9D becomes weaker, so that the spacer component 16A can move up and down relative to the rotating shaft 9D. In addition, if the threaded component 16D is tightened, the hole portion 16C becomes smaller, and the rotating shaft 9D is clamped by the spacer component 16A. As a result, the position of the spacer component 16A relative to the rotating shaft 9D is fixed. If the threaded component 16D is in a state of loosening, the movement of the spacer component 16A will be limited by the gripping portion 9A. That is, the position of the gripping portion 9A is changed in the state of loosening the threaded component 16D, so that the position of the spacer component 16A relative to the rotating shaft 9D (the range of movement) can be changed. In addition, since the spacer component 16A is always forced in the upward direction by the elastic body 16B described later, it moves up and down following the up and down movement of the gripping portion 9A when the threaded component 16D is loosened.

[0061] When the spacer 16A is fixed to the rotating shaft 9D, the gripping portion 9A abuts against the spacer 16A, so that the moving range (the range that can be screwed in) is limited. If the gripping portion 9A is moved downward in the state where the spacer 16A is fixed, the lower surface of the gripping portion 9A abuts against the upper surface of the spacer 16A strongly due to the action of the thread, and the gripping portion 9A rotates integrally with the spacer 16A. For convenience, this state is referred to as the integral state of the gripping portion 9A and the spacer 16A.

[0062] In this case, since the spacing member 16A is fixed to the rotation axis 9D, the rotation axis 9D can be rotated by rotating the grip 9A. Therefore, the user rotates the grip 9A, so that the rotation axis 9D rotates relative to the front housing 23. In the case where the grip 9A and the spacing member 16A are to be firmly integrated, for example, the grip 9A can be screwed in the downward direction while the spacing member 16A is not rotated. In addition, in the case where the integrated state is to be released, the grip 9A can be screwed in the upward direction while the spacing member 16A is not rotated. In addition, in the normal state (during operation), the grip 9A and the spacing member 16A are in an integrated state, and the rotation axis 9D can be rotated regardless of which of the grip 9A and the operating portion 9C is operated.

[0063] <Operation section 9C> The operation section 9C is fixed to the spacer member 16A. The operation section 9C extends downward from the position where it is fixed to the spacer member 16A. More specifically, the operation section 9C is bent so as to hang down forward. There is a portion protruding forward at the lower end of the operation section 9C, and the operability is improved by hooking a finger thereon. When the user uses the electric planer 1, for example, the operation section 9C can be held in one hand (with the palm facing backward). The spacer member 16A is fixed to the rotation shaft 9D, so that the operation section 9C can rotate integrally with the rotation shaft 9D. Therefore, the user performs a rotation operation on the operation section 9C, so that the rotation shaft 9D rotates relative to the front housing 23.

[0064] <Elastic body 16B> The elastic body 16B is, for example, a butterfly spring (spring component). The upper side of the elastic body 16B is supported by the spacer component 16A, and the lower side is supported by the front housing 23. If the threaded component 16D is tightened and the position of the spacer component 16A on the rotating shaft 9D is fixed, the spacer component 16A and the rotating shaft 9D become one. As a result, the rotating shaft 9D is also always forced upward by the elastic body 16B, so when the grip 9A is rotated, friction is generated at the friction generating part P1 between the rotating shaft 9D and the front housing 23. Loosening the threaded component 16D puts the spacer component 16A in a state where it can move relative to the rotating shaft 9D in the upward and downward directions. In this state, the grip 9A is rotated (moved in the upward and downward directions), so that the spacer component 16A can be moved up and down to change the compression amount of the elastic body 16B. That is, the compression amount of the elastic body 16B can be changed by operating the grip 9A.

[0065] By changing the compression amount of the elastic body 16B, the magnitude of the friction generated at the friction force generating portion P1 can be changed. As a result, in the electric planer 1, the operation load of the grip 9A when the grip 9A is rotated to rotate the rotation shaft 9D and the front base 33 is moved up and down can be adjusted according to the compression amount of the elastic body 16B. In other words, the operation load of the grip 9A when the grip 9A is rotated to move the front base 33 up and down can be adjusted to be heavier or lighter.

[0066] Next, a method for adjusting the cutting depth using the lifting mechanism 15 will be described.

[0067] The adjustment of the cutting depth is performed by the user rotating the grip 9A or the operating portion 9C. If the user rotates the grip 9A or the operating portion 9C, the rotation shaft 9D rotates. Through the rotation of the rotation shaft 9D, the internal thread 33B threadedly engaged with the external thread 9E moves relative to the external thread 9E in the up-down direction. According to the movement of the internal thread 33B, the front base 33 on which the internal thread 33B is mounted moves relative to the front housing 23 in the up-down direction. As a result, since the position (height) of the front base 33 relative to the rear base 3 in the up-down direction changes, the amount of the tool 8A protruding downward from the lower surface of the base 33A changes, and the cutting depth during cutting is adjusted.

[0068] Below, use Figure 5 (A)~ Figure 6 (B) describes in detail the adjustment of the operating load of the lifting mechanism 15 by the adjustment mechanism 16.

[0069] Figure 5 (A) Figure 5 (B) is a diagram for explaining the adjustment sequence of changing the operating load of the lifting mechanism 15 from a small state to a large state, Figure 6(A) Figure 6 (B) is a diagram for explaining the sequence of making the load operation lighter (adjustment from a large state to a small state). When making the adjustment to make the operation load of the lifting mechanism 15 heavier, first, loosen the screw member 16D so that the spacer member 16A is in a free state relative to the rotating shaft 9D (a state in which it can move up and down). Figure 5 (A) Figure 5 (B) is a diagram showing a state where the screw member 16D is loosened. When the screw member 16D is loosened, the integrated state of the grip 9A and the spacer member 16A is released. Therefore, the spacer member 16A is prevented from rotating due to the rotation of the grip 9A.

[0070] Figure 5 (A) is a state in which the position of the spacer member 16 (grip portion 9A) is at the upper position and the amount of compression of the elastic body 16B is small (the friction force at the friction force generating portion P1 is small). Figure 5 (B) is a state where the spacing member 16 (grip portion 9A) is in the lower position and the amount of compression of the elastic body 16B is large (the friction at the friction force generating portion P1 is large). As described above, when the screw member 16D is loosened, the user Figure 5 In the state of (A), the gripping portion 9A is rotated and moved downward (screwed downward), thereby suppressing the rotation of the spacer member 16A and compressing the elastic body 16B to become Figure 5 The state shown in (B). And, from Figure 5 In the state shown in (B), the grip 9A and the spacer 16A are integrated (after the screw member 16D is tightened, the grip 9A and the spacer 16A are strongly in contact with each other), thereby completing the adjustment. In addition, when the screw member 16D is loosened, the integrated state of the grip 9A and the spacer 16A is released. Therefore, the spacer 16A is prevented from rotating due to the rotation of the grip 9A, so that Figure 5 As shown in (A) and (B) of FIG. 5 , even if the position of the grip portion 9A is changed, the rotational position change of the operation portion 9C can be suppressed.

[0071] In this way, the operating load of the grip part 9A when the grip part 9A is rotated to move the front base 33 up and down is changed from a state in which the operating load of the grip part 9A is small (light), that is, the grip part 9A can be rotated with a small load, to a state in which the operating load of the grip part 9A when the grip part 9A is rotated to move the front base 33 up and down is large (heavy), that is, a larger load is required to rotate the grip part 9A.

[0072] In addition, if Figure 5As shown in (A) and (B), the front housing 23 includes a washer (clamping member) 17, which is clamped between the portion where the rotating shaft 9D and the front housing 23 slide. That is, a metal plate-shaped washer 17 is clamped between the portion where the rotating shaft 9D and the front housing 23 slide. In addition, a metal plate-shaped washer (clamping member) 18 is also clamped between the portion where the elastic body 16B contacts the front housing 23. In this way, by clamping the metal washer 17, the rotational movement of the rotating shaft 9D relative to the front housing 23 can be smoothed. In addition, by clamping the metal washer 18, damage to the front housing 23 caused by the force of the elastic body 16B can be suppressed.

[0073] Below, use Figure 6 (A) and (B) describe the adjustment procedure for changing the operation load of the grip portion 9A from a large state to a small state. Figure 6 The spacer member 16A is fixed to the rotating shaft 9D (the screw member 16D is tightened). Figure 6 (A) is a partial cross-sectional view showing a state where the grip portion 9A is located in the lower position, Figure 6 (B) is a partial cross-sectional view showing a state where the grip portion 9A is located in the upper position.

[0074] First, from Figure 6 The state of (A) of the gripping portion 9A and the spacer member 16A is released. Then, the gripping portion 9A is moved upward (screwed in), so that it can become Figure 6 The state shown in (B). Figure 6 In the state (B), it is possible to Figure 6 In this way, the gripping portion 9A can move upward relative to the spacing member 16A. Figure 6 In the state of (B), the screw member 16D that fixes the spacer member 16A is loosened. As a result, the spacer member 16A moves upward due to the force of the elastic body 16B, and can become Figure 5 The state shown in (A) (state where the operation load is small). In addition, the operation can also be performed in a manner that the operation load is lightened by rotating the grip 9A after loosening the screw member 16D.

[0075] <Second grip 10> The second grip 10 is provided on the rear side of the housing 2, that is, above the main housing 21 and the rear housing 24. In other words, the first grip 9 and the second grip 10 are arranged in the front-to-back direction on the housing 2. If another view is adopted, the second grip 10 is provided on the other side (rear side) relative to the one side (front side) of the housing 2 on which the first grip 9 is provided. Therefore, it can be said that the second grip 10 overlaps with the first grip 9 in the up-down direction (that is, in the direction orthogonal to the rear base 3), and the first grip 9 has the grip 9A provided above the upper end 25 of the housing 2 as described above and extends in the up-down direction. In addition, as described above, since the grip 9A of the first grip 9 is provided at a position above the upper end 25 of the main housing 21 of the housing 2, it can be said that the first grip 9 and the second grip 10 are provided on a plane parallel to the rear base 3. That is, the second grip 10 and the first grip 9 are at least partially located at the same position in the up-down direction.

[0076] The second grip portion 10 is formed so as to be divisible into left and right along a center line along the front-rear direction of the electric planer 1 . Figure 7 FIG. 1 is a perspective view of the electric planer 1 with the left side of the second grip 10 removed. Figure 7 2 shows the electric planer 1 with the power supply unit 4 removed.

[0077] The second gripping part 10 is composed of a gripping part main body 10A, a front connecting part 10B, and a rear connecting part 10C. The front connecting part 10B and the rear connecting part 10C are parts connecting the gripping part main body 10A and the housing 2, but in this application, they are also described as a part of the second gripping part 10. The front connecting part 10B is connected to the housing 2 at the upper part of the main housing 21 and behind the chip discharge hole 11A. Specifically, the front connecting part 10B is connected to the main housing 21 above the electric motor 6.

[0078] The control unit storage section 2B is provided in the front connection section 10B near the position where the front connection section 10B is connected to the main body housing 21. An opening 211 is formed in a part of the upper portion of the main body housing 21. A wiring 50A is inserted through the opening 211, and the wiring 50A electrically connects the control unit 5 stored in the control unit storage section 2B to the electric motor 6. When the left member of the second grip 10 is installed, the opening 211 is shielded from the outside by the left member.

[0079] The front connection portion 10B extends toward the upper rear portion at an inclination relative to the up-down direction. If another view is adopted, the farther the front connection portion 10B is from the rear base 3 in the direction (up-down direction) orthogonal to the rear base 3, the more it inclines toward the rear. The front connection portion 10B is inclined in a direction of about 65° relative to the up-down direction. In addition, the inclination is not limited to 65°, for example, it can be set in a range from 60° to 70°. An assembly portion 12 for assembling the power supply portion 4 described later is provided in the front connection portion 10B (mainly the front side portion). In addition, the wiring 50A extending downward from the lower portion of the front connection portion 10B is inserted into the wiring storage portion 2C of the above-mentioned housing 2 via the above-mentioned opening portion 211.

[0080] The grip body 10A is connected to the rear of the front connection part 10B, and extends rearward and downward above the main body housing 21 and the rear housing 24. The grip body 10A is substantially cylindrical in shape, and is held by one of the two hands of the user when using the electric planer 1. A switch mechanism 10D and a trigger switch 10E are provided inside the grip body 10A.

[0081] exist Figure 1 , an axis A extending in the extending direction of the grip body 10A, a portion of an imaginary plane p located on the same plane as the lower surface of the rear base 3, and an angle r formed between the axis A and the plane p are shown. The axis A extends in the extending direction of the grip body 10A and becomes the gripping axis of the grip body 10A. The axis A is a straight line passing through the center of one end and the center of the other end of the grip body 10A. The grip body 10A is formed into a shape bent backward from the perspective of operability, so the straight axis A does not necessarily pass through the center of the grip body 10A. The axis A is perpendicular to the left-right direction.

[0082] The angle r is about 65°. Therefore, the main body 10A of the gripping portion stands upward in a manner inclined toward the front side. In order to achieve the effects described later, the angle r is preferably set in the range of 50° to 90°. Furthermore, the angle r is preferably set in the range of 60° to 80°. That is, the main body 10A of the gripping portion (axis A) is configured to extend at an angle parallel to the up-down direction, or at an acute angle (an obtuse angle relative to the rear base 3) relative to the up-down direction.

[0083] The switch mechanism 10D is housed inside the grip body 10A and is electrically connected to the control unit 5. The trigger switch 10E is provided at the front lower side of the grip body 10A. Therefore, the control unit 5 is arranged at a position forward of the trigger switch 10E. As described above, since the wiring storage portion 2C extends from the rear lower portion of the front connection portion 10B toward the rear, the trigger switch 10E overlaps with the wiring storage portion 2C in the vertical direction (i.e., the direction orthogonal to the rear base 3).

[0084] The trigger switch 10E outputs a signal (operation signal) indicating that the trigger switch 10E is operated by the switch mechanism 10D due to the user pushing upward to the control unit 5. When the operation signal is output, the control unit 5 causes the power supply unit 4 to supply power to the electric motor 6. That is, the trigger switch 10E is a switch operated by the user when switching between the start and stop of the drive of the electric motor 6.

[0085] The rear connection portion 10C is formed in the same substantially cylindrical shape as the grip portion main body 10A, and is connected to the rear portion of the grip portion main body 10A and the rear end upper portion of the rear housing 24. In other words, the rear connection portion 10C is a connection portion formed at the end portion of the second grip portion 10 on the second direction side opposite to the direction (first direction) from the power supply portion 4 toward the first grip portion 9, and the second grip portion 10 is connected to the housing 2 at this connection portion.

[0086] An opening 212 is formed in the upper surface of the rear housing 24 in a range surrounded by the rear connection portion 10C. The wiring 50B is inserted through the opening 212. That is, the wiring 50B connecting the power supply 4 and the electric motor 6 passes through the inside of the second grip 10 and is inserted into the rear housing 24 through the opening 212.

[0087] As mentioned above, the rear base 3 is installed below the housing 2. Figure 1 , Figure 3 As shown, at least a portion of the rear connection portion 10C is located at a position closer to the front, i.e., the first gripping portion 9, than the end portion 3A on the rear (second direction) side of the rear base 3. Since the second gripping portion 10 has the above-described shape, it can be said that the second gripping portion 10 extends from the connection portion on the second direction side, i.e., the rear connection portion 10C, toward the first gripping portion 9 located on the upper front side in a direction intersecting with the surface of the rear base 3.

[0088] <Assembly section 12> Figure 1 , Figure 2 As shown, the assembly part 12 is provided at the front connecting part 10B. Specifically, the assembly part 12 is provided at the front side of the front connecting part 10B of the second gripping part 10, that is, at the side of the second gripping part 10 opposite to the first gripping part 9. The power supply part 4 is assembled in the assembly part 12 in a detachable manner. The assembly part 12 has a connection terminal 12A electrically connected to the assembled power supply part 4, and a wall part 12B connected to the front connecting part 10B of the second gripping part 10. The connection terminal 12A is electrically connected to the control unit 5.

[0089] Figure 8 This is an appearance diagram of the electric planer 1 when viewed from the rear. Figure 8 In FIG. 1 , the electric planer 1 is shown without the power supply unit 4. Figure 8As shown in FIG. 1 , the wall portion 12B has a shape that protrudes in the left-right direction relative to the front connecting portion 10B. Figure 1 As shown, the wall portion 12B is formed in the up-down direction. That is, the wall portion 12B protrudes relative to the second grip portion 10 in the left-right direction intersecting the front-back direction in which the first grip portion 9 and the second grip portion 10 are arranged. Therefore, the user can press the right and left sides of the wall portion 12B with the hand holding the second grip portion 10, for example, the thumb and the index finger, respectively, and operate the trigger switch 10E with the middle finger. Thus, the user can control the travel direction of the electric planer 1 (resist the reaction force or fine-tune the direction) by adding or subtracting the force applied to the fingers pressing the wall portion 12B.

[0090] The power supply unit 4 is assembled downward from the upper part away from the rear base 3 toward the housing 2 along the direction intersecting the rear base 3 (the direction in which the front connection part 10B is inclined). Specifically, the assembly direction of the power supply unit 4 is from the upper rear part to the lower front part along the inclination of the front connection part 10B of the second gripping part 10. The power supply unit 4 is slid along this assembly direction and assembled to the assembly part 12. In this case, the long side direction of the power supply unit 4 slides along the above-mentioned assembly direction. The power supply unit 4 assembled to the assembly part 12 is in a state in which the long side direction is inclined relative to the up-down direction along the inclination of the assembly part 12, and thus, compared with the case in which the long side direction of the power supply unit 4 is assembled in parallel with the up-down direction, it contributes to the miniaturization of the electric planer 1 in the up-down direction.

[0091] Since the assembly portion 12 is provided on the front side of the front connecting portion 10B, the first gripping portion 9 and the assembly portion 12 are provided on a surface parallel to the rear base 3. That is, at least a portion of the first gripping portion 9 and the assembly portion 12 are located at the same height position (up-down direction position). Therefore, the power supply portion 4 is mounted between the first gripping portion 9 and the second gripping portion 10 on a surface parallel to the rear base 3. In addition, as described above, the front connecting portion 10B is connected to the main body housing 21 above the electric motor 6, and the assembly portion 12 is provided on the front side of the front connecting portion 10B. Therefore, the power supply portion 4 mounted on the assembly portion 12 is located above the electric motor 6 and the combined milling cutter 8 located in front of the electric motor 6. In other words, when viewed in a direction (up-down direction) orthogonal to the rear base 3, at least a portion of the power supply portion 4 overlaps with the drive portion 13.

[0092] Fig. 9 (A) schematically shows the center of gravity position G1 of the electric planer 1 of the present embodiment when the power supply unit 4 is installed. Fig. 9 (B) schematically shows the center of gravity position G2 of the electric planer 100 of the comparative example after the power supply unit 400 is mounted. In the electric planer 100 of the comparative example, the power supply unit 400 is mounted at the rear end of the housing 200 .

[0093] like Fig. 9As shown in (A), in the electric planer 1 of this embodiment, the power supply unit 4 is mounted between the first grip 9 and the second grip 10 in the front-to-back direction. Therefore, the center of gravity position G1 is located below the power supply unit 4. More specifically, the center of gravity position G1 is located between the first grip 9 and the second grip 10 near the center of the electric planer 1 in the front-to-back direction and near the front upper side of the electric motor 6. That is, the center of gravity position G1 of the electric planer 1 of the embodiment is located between the user's hand holding the first grip 9 and the user's hand holding the second grip 10.

[0094] In contrast, the electric planer 100 of the comparative example has a structure in which a mounting portion 120 is provided at the rear end of the second grip portion 110 of the upper portion of the housing 200 disposed behind the first grip portion 900, and a power supply portion 400 is mounted on the mounting portion 120. That is, in the electric planer 100 of the comparative example, the power supply portion 400 is mounted at the rear end of the housing 200, i.e., the rear end of the second grip portion 110. Therefore, in the electric planer 100 of the comparative example, as shown in FIG. Fig. 9 As shown in (B), the center of gravity position G2 is located behind the center of the electric motor 600. That is, the center of gravity position G2 is located below the hand of the user who holds the second grip 110 of the electric planer 100 of the comparative example.

[0095] Here, the operation state of the electric planer 1 is described. The electric planer 1 is an operating machine that operates by sliding on the upper surface of a material to be processed such as wood. Specifically, the operation is performed by operating in the following manner: while the combination milling cutter shaft 8B is in a state along the left-right direction, the grip body 10A is held and the trigger switch 10E is pressed (pulled), so that the electric motor 6 is driven to rotate the combination milling cutter 8, and the front base 33 and the rear base 3 are placed on the upper surface of the wood and pushed forward.

[0096] The cutter 8A held by the combined milling cutter 8 protrudes downward from the lower surface of the front base 33 according to the vertical position of the front base 33, and the amount of processing on the wood is determined by the amount of protrusion. In fact, the cutter 8A protrudes downward from the front base 33 by a small amount, and is configured to shave (cut) the upper surface of the wood by a small amount. By repeating this operation, the upper surface of the wood can be made into a uniform plane.

[0097] At this time, if the main body (front base 33, rear base 3) floats upward from the wood, the cutting amount of the cutter 8A changes, so the operation is performed in the following manner: the user (operator) presses the electric planer 1 from top to bottom to prevent it from floating. Therefore, the grip body 10A is preferably at an angle along the front-back direction.

[0098] In addition, the electric planer 1 is used for finishing curved surfaces in addition to the above-mentioned processing such as forming a flat surface of the same surface. For example, it is used for furniture with a surface that is a straight-grained curved surface, surfboards with a surface that is a compound curved surface, and the like. That is, in a workpiece (plate material) having a surface that is inclined in both the front-back direction and the left-right direction when the width direction is the up-down direction, there is a case where the workpiece is used for processing the surface. In this case, since the work is performed in a manner that allows the electric planer 1 to glide (slide) on the curved surface, when the holding force on the electric planer 1 disappears, the electric planer 1 slides and falls from the workpiece. Therefore, in the case of such a curved surface processing operation, the ease of holding the position in the up-down direction is given priority over the ease of pressing the electric planer 1 downward.

[0099] Furthermore, in plane machining, the electric planer 1 is usually pushed forward to perform the operation, while in curved surface machining, the electric planer 1 may be slid from the right hand direction to the left hand direction (or vice versa) of the operator for more delicate operation. Therefore, since the operator needs to hold the electric planer 1 well-balanced on both the first grip 9 and the second grip 10, it is preferred that the gripping axis is in the up-down direction (at an acute angle or parallel to the up-down direction) so as to facilitate the operation in the left-right direction (the arrangement direction of the front base 33 and the rear base 3) from the operator's point of view.

[0100] In addition, there is a case where the electric planer 1 is tilted in a direction intersecting the processing direction for processing, that is, there is a case where, for example, when the electric planer 1 is operated in the forward direction, the arrangement direction of the front base 33 and the rear base 3 is tilted in the left-right direction. In this way, since the extension direction of the tool 8A is tilted relative to the processing direction, the load applied to the combined milling cutter 8 changes, and the operation is easily controlled. According to the state of the electric planer 1 being tilted for operation, it is also preferable that the gripping axis is along the up-down direction.

[0101] As described above, in the electric planer 1 of the present embodiment, the center of gravity position G1 is located forward compared to the center of gravity position G2 of the electric planer 100 of the comparative example. Therefore, when the user holds the first gripping portion 9 with one hand and the second gripping portion 10 with the other hand to process the cut material, the user can hold the electric planer 1 with a substantially equal gripping force with both hands, so that the operability is good. In particular, in the above-mentioned curved surface processing, the operability is good in the form of sliding the electric planer 1 from the right hand side to the left hand side of the operator to perform the operation.

[0102] According to the above-described embodiment, at least one of the following effects can be obtained.

[0103] (1) The electric planer 1 includes a first grip 9 provided on one side (front) of the housing 2 and a second grip 10 provided on the other side (rear) of the housing 2, and the power supply unit 4 is mounted between the first grip 9 and the second grip 10 on a surface parallel to the rear base 3. Thus, the power supply unit 4 can be disposed in the space between the first grip 9 and the second grip 10, thereby facilitating the operation of the planer 1. Fig. 9 Compared with the electric planer 100 of the comparative example shown in (B), it can be miniaturized in the front-to-back direction. In addition, since the first grip 9, the second grip 10 and the power supply unit 4 are arranged on a surface parallel to the rear base 3, it also contributes to the miniaturization of the electric planer 1 in the up-down direction. Since the electric planer 1 can be miniaturized in the up-down direction and the left-right direction, the operability of the electric planer 1 by the user can be improved.

[0104] (2) The electric planer 1 includes a first grip 9 provided on one side (front) of the housing 2, and a second grip 10 provided on the other side (rear) of the housing 2, and the center of gravity when the power supply unit 4 is installed is located between the first grip 9 and the second grip 10 on a plane parallel to the rear base 3. That is, the center of gravity is located near the center of the front-to-back direction of the electric planer 1. Thus, when the user holds the first grip 9 with one hand and the second grip 10 with the other hand to process the cut material, the user can hold the electric planer 1 with approximately equal holding force with the left and right hands, so that the operability is good. In particular, in the above-mentioned curved surface processing, it becomes important to maintain the position in the up-down direction, so by setting the center of gravity position in this way, it becomes easy to maintain and the operability is improved.

[0105] (3) The electric planer 1 includes a first grip 9 provided on one side (front) of the housing 2, a second grip 10 provided on the other side (rear) of the housing 2, and a mounting portion 12 to which the power supply unit 4 is mounted. The mounting portion 12 includes a wall portion 12B that protrudes relative to the second grip 10 in a direction (left-right direction) that intersects with the direction (front-back direction) in which the first grip 9 and the second grip 10 are arranged. Thus, by pressing the wall portion 12B with the thumb or index finger of the hand holding the second grip 10, the inclination of the electric planer 1 in the left-right direction during cutting can be adjusted. As a result, the operability when the electric planer 1 is used to cut the surface of the material to be cut into a curved surface is improved.

[0106] (4) The first gripping portion 9 extends in a direction (vertical direction) perpendicular to the rear base 3. Thus, the gripping axis of the first gripping portion 9 is in the vertical direction. In addition, the first gripping portion 9 overlaps with the second gripping portion 10 in the vertical direction. In summary, the user can easily grip the electric planer 1, and can easily fine-adjust the position of the electric planer 1 on the cut material to improve the processing accuracy, so the convenience for the user is improved.

[0107] (5) The gripping portion (gripping portion main body 10A) of the second gripping portion 10 extends in a direction (vertical direction) orthogonal to the rear base 3. The gripping portion main body 10A is not parallel to the vertical direction. That is, the gripping portion main body 10A extends in an inclined direction. As a result, the user can also easily grip the electric planer 1, and can easily fine-tune the position of the electric planer 1 on the cut material to improve the processing accuracy, thereby improving the convenience for the user. In addition, since the gripping portion main body 10A extends in an inclined direction, it is possible to suppress damage to the workability of the conventional downward pressing operation. As described above, the gripping portion main body 10A is at an angle of about 65° relative to the lower surface of the rear base 3, but in consideration of convenience, the gripping portion main body 10A only needs to be located in the range of 50° to 90° relative to the lower surface of the rear base 3. That is, the gripping portion main body 10A only needs to be at an obtuse angle relative to the lower surface of the rear base 3 or extend in a vertical direction. Furthermore, when the grip body 10A forms an obtuse angle with respect to the lower surface of the rear base 3, the grip body 10A only needs to be configured to tilt forward. In other words, it is sufficient that the upper end of the grip body 10A extending in a predetermined direction is located forward of the lower end. More preferably, it is located in the range of 55° to 85°. More preferably, it is located in the range of 60° to 80°. In addition, this feature is combined with the feature of arranging the power supply unit 4 or the control unit 5 between the first grip 9 and the second grip 10 in the front-to-back direction, so that the electric planer 1 can be more appropriately miniaturized in the front-to-back direction.

[0108] (6) The grip portion 9A of the first grip portion 9 protrudes upward from the upper end portion 25, which is the end portion of the housing 2 opposite to the rear base 3. Thus, since the housing 2 is not located behind the first grip portion 9, the user who grips the first grip portion 9 does not interfere with the housing 2. As a result, the user can easily grip the first grip portion 9, and the operability of the electric planer 1 can be improved.

[0109] (7) At least a portion of the installed power supply unit 4 vertically overlaps the electric motor 6, the rotating shaft 6A, and the combined cutter 8 as the driving unit 13. Thus, the electric planer 1 can be miniaturized in the front-rear direction.

[0110] (8) The power supply unit 4 is mounted from the upper direction away from the rear base 3 toward the lower part of the housing 2 in the direction intersecting the rear base 3 (the direction in which the front connecting portion 10B is inclined). This makes it easy to mount the power supply unit 4. In addition, compared with the case where the power supply unit 4 is mounted without being inclined in the vertical direction, the space between the power supply unit 4 and the first gripping portion 9 is ensured, so the operability when the first gripping portion 9 is held for cutting is improved. In addition, the long side direction of the power supply unit 4 mounted on the mounting portion 12 is inclined relative to the vertical direction along the inclination of the mounting portion 12, so it can contribute to the miniaturization of the electric planer 1 equipped with the power supply unit 4 in the vertical direction.

[0111] (9) The electric planer 1 includes a lifting mechanism 15, which is operated by the operator to move the front base 33 up and down. The lifting mechanism 15 includes an adjustment mechanism 16, which can adjust the operation load when the front base 33 is moved up and down. As a result, the operation load of the grip 9A when the front base 33 is raised and lowered to change the cutting depth can be adjusted to a size that the user likes. As a result, the operability of the electric planer 1 is improved. In addition, since the operation load (the compression amount of the elastic body 16B) does not change depending on the position of the front base 33, the operability can be maintained.

[0112] (10) The control unit 5 is arranged at a position farther from the rear base 3 than the electric motor 6 in the vertical direction perpendicular to the rear base 3. Therefore, for example, compared with the case where the control unit 5 is accommodated in the rear housing 24 at the rear of the main housing 21, the height and the dimension in the front-rear direction of the rear housing 24 can be reduced. As a result, the space formed between the grip body 10A of the second grip 10 and the rear of the housing 2, that is, the inner space (gripping space) of the annular structure formed by the second grip 10 and the housing 2 can be ensured more widely, so that the user can easily grip the grip body 10A. As a result, the operability of the electric planer 1 is improved.

[0113] In addition, for example, when the control unit 5 is stored in the rear housing 24 behind the main housing 21, the above-mentioned holding space may become narrower. In order to avoid this, if the position of the grip body 10A is moved upward or backward, the size of the entire device in the vertical direction will increase. In addition, in order to ensure a wider space formed between the grip body 10A and the rear of the housing 2, it is also considered to increase the inclination angle of the grip body 10A relative to the rear base 3, but in this case, the inclination angle of the grip body 10A is close to horizontal, which may impair the above-mentioned operability. In contrast, in this embodiment, the inclination angle of the grip body 10A relative to the rear base 3 can be suppressed, so that the electric planer 1 can be miniaturized in the vertical direction.

[0114] In addition, in this embodiment, an excellent working machine is realized by the above-mentioned features (1) to (10), but only one of them may be implemented.

[0115] The electric planer 1 of the above-described embodiment can be modified as follows.

[0116] <First Modification> An electric planer according to a first modification will be described. Hereinafter, the same reference numerals are used for the same or substantially same components as the electric planer 1 according to the embodiment, and mainly the differences will be described. In particular, the unexplained points are the same as those in the embodiment.

[0117] Fig.10is a side view of the appearance of an electric planer 130 according to a first modified example, Fig.11 yes Fig.10 A cross-sectional view of an electric planer 130 is shown. Fig.12 The electric planer 130 of the first modification is different from the embodiment in the shape of a part of the housing 802, the first grip 809, the shape of a part of the second grip 810, the mounting part 812, and the lifting mechanism 815.

[0118] <Casing 802> The casing 802 of the electric planer 130 according to the first modification includes a main casing 21, a gear casing 22, a front casing 23, and a rear casing 824. Fig.12 As shown, a suction port 21A is formed on the right side of the main housing 21, which connects the outside of the housing 2 and the motor housing 2A and is composed of a plurality of holes. The rear housing 824 is provided at the rear of the main housing 21, and has a shape that is higher in the vertical direction compared to the rear housing 24 of the embodiment. A control unit housing 2B for housing the control unit 5 is formed inside the rear housing 824. That is, the control unit 5 is provided at the rear relative to the electric motor 6 housed in the motor housing 2A of the main housing 21.

[0119] The control unit 5 is electrically connected to the power supply unit 4 by a wiring 5A. Specifically, the connection terminal 12A is electrically connected to the control unit 5 by the wiring 5A. The wiring 5A is connected to the connection terminal 12A at one end and to the control unit 5 at the other end through a wiring receiving portion 2C formed in the housing 2 on the upper side of the main housing 21, i.e., the upper part of the electric motor 6.

[0120] In addition, air intake ports 24B are formed on both left and right side surfaces of the rear housing 824 .

[0121] <Second gripping portion 810> The front connection portion 810B of the second gripping portion 810 also extends toward the upper rear portion at an inclination relative to the up-down direction. However, the front connection portion 810B extends in a direction inclined at about 25° relative to the up-down direction. That is, the inclination angle is smaller than that of the front connection portion 810B in the embodiment. In addition, the inclination is not limited to 25°, for example, it can be set in the range of 20° to 30°. That is, the second gripping portion 10 is at an angle of about 50° relative to the lower surface of the rear base 3. Considering convenience, the second gripping portion 10 only needs to be located in the range of 35° to 55° relative to the lower surface of the rear base 3. In addition, the wiring storage portion 2C in the housing 2 connects the front connection portion 810B and the rear lower portion of the front connection portion 10B of the main housing 21 and extends toward the rear.

[0122] The switch mechanism 10D is housed inside the grip body 810A and is electrically connected to the control unit 5 via a wiring 5B. The wiring 5B passes through the grip body 810A and the rear connection part 810C, and is connected to the trigger switch 10E at one end and to the control unit 5 at the other end.

[0123] <Assembly section 812> The assembly section 812 has a wall section 812B connected to the front connection section 810B of the second gripping section 810. The wall section 812B has a shape that protrudes relative to the front connection section 810B, and is inclined along the inclination of the front connection section 810B of the second gripping section 810. That is, the wall section 812B protrudes relative to the second gripping section 810 in the left-right direction intersecting the front-back direction in which the first gripping section 809 and the second gripping section 810 are arranged, and is inclined toward the rear relative to the up-down direction as it moves away from the rear base 3 in the vertical direction.

[0124] In the first modified example, the power supply unit 4 is also installed downward from the upper side toward the housing 802 along the direction intersecting the rear base 3, that is, the direction in which the front connection portion 810B is inclined. As described above, since the wall portion 812B is inclined along the inclination of the front connection portion 810B, it can be said that the power supply unit 4 is installed along the inclination of the wall portion 812B from the upper rear portion toward the lower front portion.

[0125] <First grip 809> The first grip 809 includes a grip 809A and an operating portion 809C in addition to the rotation shaft 9D of the embodiment. The grip 809A is provided at the upper portion of the front housing 23. The grip 809A is formed in a shape extending in the vertical direction, and its lower end is located above the upper end 25 of the housing 2. The grip 809A engages with the upper end of the rotation shaft 9D.

[0126] The operation part 809C is attached to the rotation axis 9D and extends in a direction perpendicular to the vertical direction. The operation part 809C can be rotated by the rotation axis 9D. The user rotates the operation part 809C, so that the rotation axis 9D rotates relative to the front housing 23. The cutting depth is adjusted by the user rotating the operation part 809C.

[0127] <Lifting mechanism 815> Fig.13It is a partial cross-sectional view showing the vicinity of the lifting mechanism 815 of the electric planer 130. The lifting mechanism 815 in the first modified example has the above-mentioned gripping portion 809A and the rotating shaft 9D, and an adjustment mechanism 816 provided on the rotating shaft 9D. The adjustment mechanism 816 has a nut component 816F in addition to the spacing component 16A and the elastic body 16B of the embodiment. The nut component 816F is threadedly coupled to the rotating shaft 9D, and is configured to be able to move up and down by rotating relative to the rotating shaft 9D. By moving the nut component 816F up and down to change the compression amount of the elastic body 16B, the magnitude of the friction force generated at the friction force generating portion P1 can be changed. In addition, in Fig.11 The elastic body 16B is omitted in the figure.

[0128] As described above, the nut member 816F is threadedly coupled to the rotating shaft 9D and can be moved up and down by rotating relative to the rotating shaft 9D. The nut member 816F is connected at its upper end to the lower end of the gripping portion 809A. In addition, the above-mentioned operating portion 809C extending in the radial direction L1 of the rotating shaft 9D is mounted on the nut member 816F.

[0129] The spacer member 16A is disposed at the lower portion of the nut member 816F and is provided on the rotating shaft 9D. Similar to the embodiment, the spacer member 16A is urged upward by the elastic body 16B.

[0130] When adjusting the operating load of the gripping portion 809A, the following operation is performed. First, loosen the screw member 16D (see Fig.10 ), so that the hole portion 16C becomes larger, the spacer component 16A can move up and down. In this state, the nut component 816F is rotated, and the spacer component 16A, which is urged upward by the elastic body 16B, follows the nut component 816F and moves up and down. In addition, the threaded component 16D is tightened, so that the position of the spacer component 16A relative to the rotating shaft 9D is fixed. As a result, the compression amount of the elastic body 16B changes, and frictional force is generated at the frictional force generating part P1 according to the compression amount of the elastic body 16B. As a result, the operating load of the gripping portion 9A is adjusted.

[0131] In the first modification, the front housing 23 includes a metal plate-shaped washer 17 as an intervening member at the portion where the rotating shaft 9D slides with the front housing 23. Similarly, the front housing 23 includes a metal plate-shaped washer 18 as an intervening member at the portion where the elastic body 16B contacts the front housing 23.

[0132] express Fig.13 The partial cross-sectional view near the lifting mechanism 15 shown in FIG. 1 shows a state where the spacer member 16A is fixed at a position where the compression amount of the elastic body 16B is reduced. Fig.13The procedure for adjusting the operation load of the grip 9A will be described. Here, the description will be given by taking the case where the operation load of the grip 9A is changed from a small state to a large state.

[0133] exist Fig.13 In the state where the operation load of the grip 809A is adjusted to a small load (the compression amount of the elastic body 16B is adjusted to a small state), the screw member 16D fixing the spacer member 16A is loosened. Thus, the spacer member 16A is in a state where it can be moved.

[0134] In this state, if the operation part 809C is held and the nut member 816F is rotated together with the operation part 809C, the nut member 816F is lowered to a desired position. At this time, the spacer member 16A is also moved, so the spacer member 16A is pressed by the nut member 816F and lowers following the lowering of the nut member 816F.

[0135] If the spacing member 16A is lowered to a desired position together with the nut member 816F, the elastic body 16B is compressed by a predetermined amount. In this state, the threaded member 16D is tightened, so that the spacing member 16A is fixed at the position of the rotating shaft 9D. Thus, the elastic body 16B is adjusted to a larger state. It is further preferred that after the position of the spacing member 16A is fixed, the nut member 816F is rotated and lowered again, so that the shaking of the front housing 23 and the nut member 816F can be suppressed, and the response of the lifting mechanism 15 and the adjustment mechanism 16 can be improved.

[0136] As described above, the nut member 816F is lowered by the operation of the operating portion 809C, so when the position of the spacing member 16A is fixed, a space is generated between the upper end of the nut member 816F and the lower end of the gripping portion 809A. The user rotates the gripping portion 809A to lower the gripping portion 809A to a position where the lower end of the gripping portion 809A contacts the upper end of the nut member 816F. As a result, the compression amount of the elastic body 16B is adjusted to increase, and as a result, the gripping portion 809A, the nut member 816F, the spacing member 16A and the rotating shaft 9D are integrated, and the operating load of the gripping portion 980A is adjusted to increase.

[0137] According to the first modification example described above, in addition to obtaining at least one of the same effects as those of (1) to (8) obtained according to the embodiment, the following effects are obtained.

[0138] The power supply unit 4 is mounted from the upper rear portion toward the lower front portion along the inclination of the wall portion 812B of the mounting portion 812. Thus, compared with the case where the power supply unit 4 is mounted without being tilted in the vertical direction, the space between the power supply unit 4 and the first gripping portion 809 is ensured, thereby improving the operability when the first gripping portion 809 is held for cutting. In addition, the long side direction of the power supply unit 4 mounted on the mounting portion 12 is tilted relative to the vertical direction along the inclination of the mounting portion 812, thereby contributing to the miniaturization of the electric planer 130 mounted with the power supply unit 4 in the vertical direction.

[0139] The above-mentioned first modified example can be modified as follows.

[0140] Fig.14 (A) is a partial side view of the electric planer 130A of the modified example. Fig.14 (B) is Fig.14 1 is a partial cross-sectional view of an electric planer 130A shown in (A). In the electric planer 130A, a coil spring (spring member) is used as the elastic body 16B provided in the adjustment mechanism 816. That is, a coil spring is provided as the elastic body 16B between the front housing 23 and the spacer member 16A. Even in the electric planer 130A using the coil spring as the elastic body 16B, as in the electric planer 130 of the first modified example, the operating load of the grip 809A when the front base 33 is raised or lowered to change the cutting depth can be easily changed to be lighter or heavier. As a result, in the electric planer 130A of the modified example, its operability is also improved.

[0141] Furthermore, the electric planer 130 of the first modification and the electric planer 130A of the modification are described as being provided with the spacer member 16A. However, the adjustment mechanism 816 only needs to be provided with the nut member 816F and the elastic body 16B, and the spacer member 16A may not necessarily be provided.

[0142] <Second Modification> In the electric planer 130B of the second modification, the long side direction of the power supply unit 4 is installed in a direction intersecting with the front-back direction. Specifically, the long side direction of the power supply unit 4 is installed in parallel with the left-right direction of the electric planer 130B. That is, similar to the embodiment and the first modification, the electric planer 130B of the second modification includes: a drive unit 13 that is housed inside the housing 802 and includes an electric motor 6, a rotating shaft 6A, and a combined milling cutter 8 provided on the rotating shaft 6A; a power supply unit 4 that is installed in a detachable manner on the housing 2; a first gripping portion 809; and a second gripping portion 810. In addition, the power supply unit 4 is installed between the first gripping portion 809 and the second gripping portion 810 on a surface parallel to the rear base 3. The long side direction of the installed power supply unit 4 intersects with the front-back direction in which the first gripping portion 809 and the second gripping portion 810 are arranged.

[0143] Fig.15(A) Fig.15 (B) Fig.15 (C) shows a side view of an electric planer 130B having a second modified example of the above-mentioned structure. Fig.15 (A) Fig.15 (B) Fig.15 In (C), an electric planer 130B is shown in which the electric planer 130 of the first modification is deformed. However, the electric planer 130B of the second modification can be configured by deforming the electric planer 1 of the embodiment.

[0144] Fig.15 (A) shows a case where the mounting portion 812 provided in front of the second gripping portion 810 is provided in the vertical direction. That is, in the electric planer 130B of the second modification, unlike the electric planer 1 of the embodiment and the electric planer 130 of the first modification, the mounting portion 812 is not inclined to the rear side. In this case, the power supply unit 4 is mounted on the mounting portion 812 in a state where the short side direction of the power supply unit 4 is in the vertical direction. As a result, the long side direction orthogonal to the short side direction of the power supply unit 4 is in the left-right direction.

[0145] Fig.15 (B) shows a case where the assembly portion 812 provided in front of the second grip portion 810 is provided in the left-right direction. In this case, the assembly portion 812 is provided in the upper portion of the main body housing 21 of the housing 802 in the left-right direction. That is, in the electric planer 130B of the second modified example, unlike the electric planer 1 of the embodiment and the electric planer 130 of the first modified example, the assembly portion 812 is not inclined to the rear side. In this case, the power supply unit 4 is assembled to the assembly portion 812 in a state where the short side direction of the power supply unit 4 is in the front-back direction. As a result, the long side direction orthogonal to the short side direction of the power supply unit 4 is in the left-right direction.

[0146] Fig.15 (C) also shows a case where the mounting portion 812 provided in front of the second gripping portion 810 is provided in the left-right direction. In this case, the mounting portion 812 is provided at the end of the front upper portion of the front connecting portion 810B so as to face the upper portion of the housing 802. The mounting portion 812 is provided with its long side in the left-right direction. That is, the mounting of the power supply unit 4 is parallel to the vertical direction. Fig.15 In this case, the power supply unit 4 is also mounted on the mounting portion 812 with the short side of the power supply unit 4 along the front-rear direction. As a result, the long side orthogonal to the short side of the power supply unit 4 is along the left-right direction.

[0147] In the second modification, since the long side direction of the power supply unit 4 intersects with the front-back direction, in addition to obtaining at least one of the effects (1) and (2) obtained by the embodiment, the following effects are also obtained. That is, the electric planer 130B can be miniaturized in the front-back direction. In addition, when the user holds the first gripping portion 809 to perform cutting, the power supply unit 4 does not interfere with the user's hand, thereby improving operability.

[0148] <Third Modification> Fig.16 It is an external view of the right side of the electric planer 1A according to the third modified example. Fig.17 It is a cross-sectional view of an electric planer 1A according to a third modified example. Fig.18 So Fig.16 The sectional view of the electric planer 1A cut along the line BB shown in FIG. Fig.18 As shown, the electric planer 1A is different from the electric planer 1 of the embodiment in that the electric motor 6 is a brushless motor.

[0149] Since the electric motor 6 is a brushless motor, Fig.17 As shown in FIG. 1 , the control unit 51A is equipped with an inverter circuit. Figure 2 Compared with the control unit 5 of the embodiment shown in FIG. 1 , the control unit 51A is larger in size. In order to cool the heat generated by the inverter circuit of the larger control unit 51A, as shown in FIG. Fig.16 As shown, a cooling opening 10F is formed on the right side of the front connecting portion 10B of the second gripping portion 10. That is, the cooling opening 10F is formed near the control unit housing portion 2B housing the control unit 51A.

[0150] The cooling opening 10F is an opening that connects the inside and outside of the housing 2. As described above, when the fan 7 is driven to rotate along with the rotation of the electric motor 6 and generates fan wind in the housing 2, the air outside the electric planer 1A flows into the housing 2 through the cooling opening 10F. Since the cooling opening 10F is formed near the control unit 51A, the control unit 51A is cooled by the air from the outside flowing in through the cooling opening 10F. As a result, the cooling efficiency of the control unit 51A, which is large in size and has a high heat generation, can be improved.

[0151] In addition, Fig.16 , a case where three openings are formed as the cooling openings 10F is shown. However, the number and shape of the cooling openings 10F are not limited to Fig.16 The numbers and shapes shown can be any numbers and shapes that do not inhibit the cooling efficiency of the control unit 51A.

[0152] <Fourth Modification> The mounting portion 12, 812 may be provided in front of the second gripping portion 10, 810 and may be inclined toward the rear relative to the vertical direction. In this case, the mounting portion 12, 812 may be inclined at an angle different from that of the front connecting portion 10B, 810B of the second gripping portion 10, 810, or may be provided separately from the front connecting portion 10B, 810B of the second gripping portion 10, 810. Furthermore, the power supply unit 4 is mounted on the mounting portion 12, 812 from the upper rear portion toward the lower front portion. That is, similar to the electric planer 1 of the embodiment, the electric planer 130, 130A of the first modification, and the electric planer 1A of the third modification, the electric planer of the fourth modification has: a drive unit 13 which is housed inside the housing 2, 802 and includes an electric motor 6, a rotating shaft 6A, and a combined milling cutter 8 provided on the rotating shaft 6A; a power supply unit 4 which is detachably mounted on the housing 2, 802; a first gripping unit 9, 809; and a second gripping unit 10, 810. Furthermore, the power supply unit 4 is mounted between the first gripping unit 9, 809 and the second gripping unit 10, 810 on a surface parallel to the rear base 3 from the upper rear portion toward the lower front portion. As a result, at least one of the effects (1), (2), and (7) obtained by the above-mentioned embodiment is obtained.

[0153] <Fifth Modification> In addition, the present invention can also be applied to devices other than the electric planer. Fig.19 (A) Fig.19 (B) is an embodiment in which the present invention is applied to a belt sander. Fig.19 (A) is the view from the left side. Fig.19 (B) is a view viewed from the right side. Fig.19 (A) Fig.19 The belt sander 101 shown in (B) has: a housing 102; a first grip 109 and a second grip 110 connected to the housing 102; a trigger 103 mounted on the second grip 110; a battery 104 disposed above the housing 102; a well-known belt drive mechanism 140 composed of a driving roller 141 and a driven roller 142 disposed below the housing 102; and a motor (not shown) as a driving source for the driving roller 141. The belt sander 101 has a grinding belt 108 shown by a two-dot chain line and mounted on the driving roller 141 and the driven roller 142. The horizontal lower surface portion of the grinding belt 108 corresponds to the planar working portion in the present invention.

[0154] The motor (not shown) is driven to rotate the active roller 141, and the rotation of the active roller 141 is transmitted to the driven roller 142 via the grinding belt 108, so that the active roller 141, the driven roller 142 and the grinding belt 108 are driven to rotate. The grinding belt 108 driven to rotate is configured to abut against the workpiece and slide in the arrangement direction of the active roller 141 and the driven roller 142, so that the surface of the workpiece can be grinded. Even in the belt sander 101, as in the electric planer 1, since the battery 104 is located between the two gripping parts (separated in the arrangement direction of the active roller 141 and the driven roller 142), namely, the first gripping part 109 and the second gripping part 110, it is possible to achieve compactness and improve operability.

[0155] In the above description, various embodiments and modifications have been described, but the present invention is not limited to these contents. Other aspects that can be considered within the scope of the technical concept of the present invention are also included in the scope of the present invention.

[0156] In the above-mentioned embodiments and various modifications, the electric planers 1, 1A, 130, 130A, 130B and the belt sander 101 are described as working machines having a planar working portion, but other working machines having a planar working portion (base) such as a circular saw, a wire saw, and a root remover may also be used.

[0157] Explanation of symbols

[0158] 1. 1A. 130. 130A. 130B—electric planer, 2. 802—housing, 2C—wiring storage unit, 3—rear base, 3A—end, 4—power supply unit, 5. 51A—control unit, 5A. 5B. 50A. 50B—wiring, 6—electric motor, 6A—rotating shaft, 6B. 8C—pulley, 6C—belt, 7—fan, 8—combined milling cutter, 8A—tool, 8B—combined milling cutter shaft, 9. 809—first gripping portion, 9A. 809A—gripping portion, 9C. 809C—operating portion, 9D—rotating shaft, 10. 810—second gripping portion, 10A. 8 10A—holding part body, 10B, 810B—front connecting part, 10C, 810C—rear connecting part, 10D—switch mechanism, 10E—trigger switch, 12, 812—assembly part, 12A—connection terminal, 12B, 812B—wall part, 13—driving part, 15, 815—lifting mechanism, 16, 816—adjustment mechanism, 16A—spacer component, 16B—elastic body, 16D—threaded component, 21—main body housing, 22—gear housing, 23—front housing, 24, 824—rear housing, 25—upper side end, 33—front base, 33A—base.

Claims

1. A working machine having a planar working portion, characterized in that: have: case; A driving part, which is housed inside the housing and includes a motor, a driving shaft driven by the motor, and a processing part provided on the driving shaft; a power supply unit detachably mounted on the housing and supplying power to the driving unit; A first gripping portion, which is disposed on one side of the housing in a predetermined direction; as well as A second gripping portion is provided on the other side of the housing in the predetermined direction. The power supply unit is mounted between the first gripping unit and the second gripping unit in the predetermined direction.

2. A working machine having a planar working portion, characterized in that: have: case; A driving part, which is housed inside the housing and includes a motor, a driving shaft driven by the motor, and a processing part provided on the driving shaft; a power supply unit detachably mounted on the housing and supplying power to the driving unit; A first gripping portion, which is disposed on one side of the housing in a predetermined direction; as well as A second gripping portion is provided on the other side of the housing in the predetermined direction. The center of gravity when the power supply unit is mounted is located between the first gripping portion and the second gripping portion in the predetermined direction.

3. A working machine having a planar working portion, characterized in that: have: case; A driving part, which is housed inside the housing and includes a motor, a driving shaft driven by the motor, and a processing part provided on the driving shaft; A first gripping portion, which is disposed on one side of the housing in a predetermined direction; A second gripping portion, which is disposed on the other side of the housing in the predetermined direction; as well as A wall portion protrudes relative to the second gripping portion in a direction intersecting the predetermined direction and in a plane direction of the working portion.

4. The working machine according to claim 2, characterized in that: The first gripping portion extends in a direction perpendicular to the working portion, and overlaps with the second gripping portion in the direction perpendicular to the working portion.

5. The working machine according to any one of claims 1 to 4, characterized in that: The first gripping portion comprises a gripping portion and a connecting portion connected to the housing. The gripping portion of the first gripping portion is provided at a position farther from the working unit than a vertex position of the housing in a direction perpendicular to the working unit.

6. The working machine according to claim 1 or 2, characterized in that: At least a portion of the power supply unit mounted on the housing overlaps the driving unit in a direction perpendicular to the working unit.

7. The working machine according to claim 1 or 2, characterized in that: The second gripping portion has a mounting portion for mounting the power supply portion on the first gripping portion side. The mounting portion includes a wall portion that protrudes relative to the second grip portion in a direction intersecting a direction in which the first grip portion and the second grip portion are arranged.

8. The working machine according to claim 1 or 2, characterized in that: The long side direction of the power supply unit mounted on the housing intersects with the direction in which the first gripping portion and the second gripping portion are arranged.

9. The working machine according to claim 1 or 2, characterized in that: The gripping axis of the second gripping portion extends in a predetermined direction, and the predetermined direction is a direction perpendicular to or intersecting the working portion at an obtuse angle.

10. The working machine according to claim 3, characterized in that: The wall portion is inclined toward the second gripping portion with respect to a direction perpendicular to the working portion as it becomes farther away from the working portion.

11. The working machine according to claim 1 or 2, characterized in that: The second gripping portion is connected to the housing at a connecting portion formed at an end portion in a direction opposite to the direction from the power supply portion toward the first gripping portion, and extends from the connecting portion toward the first gripping portion in a direction intersecting with a surface of the working portion. The second gripping portion has a switch for switching the start and stop of driving of the motor. The housing has a wiring space for accommodating wiring connecting the power supply unit and the motor. The wiring space overlaps the switch in a direction perpendicular to the working portion.

12. The working machine according to claim 1 or 2, characterized in that: The second gripping portion is connected to the housing at a connecting portion formed at an end portion in a second direction opposite to a first direction from the power supply portion toward the first gripping portion. The working part has an end portion on the second direction side. At least a portion of the connection portion is located closer to the first gripping portion than the end portion of the working portion.

13. The working machine according to claim 11, characterized in that: A controller for controlling the motor is provided, The controller is disposed at a position farther from the working unit than the motor in a direction perpendicular to the working unit.

14. A working machine, characterized in that: have: motor; a processing unit that is rotated by the driving force of the motor; A working part, which supports the processing part; a front base that can move up and down relative to the working part; and The lifting mechanism is operated by the operator to move the front base up and down. The lifting mechanism includes an adjustment mechanism capable of adjusting an operation load when the front base is moved up and down.

15. A working machine capable of performing processing work facing forward, characterized in that: have: motor; A housing for storing the motor; A grip portion, which is provided on the housing and is provided with a switch operable by an operator; a controller that controls the motor based on an operation on the switch; a processing unit that is rotated by the driving force of the motor; A working part, which supports the processing part; a front base that can move up and down relative to the working part; and The lifting mechanism is operated by the operator to move the front base up and down. The controller is arranged in front of the switch and above the motor.

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