Work machine

Abstract

The workability of a working machine is improved. The blower is provided with: a motor; an operation unit that can be moved from an initial position by the operation of an operator; and a control unit that controls the driving of the motor in accordance with the operation state of the operation unit and that is capable of detecting the position of the operation unit, the control unit performing control to switch to a plurality of operation modes including a normal mode and an on-lock mode. The control unit is configured to drive the motor while the operation unit is in the ON region in the normal mode and stop driving of the motor while the operation unit is in the OFF region, and to drive the motor irrespective of the position of the operation unit in the ON lock mode and stop driving of the motor while the operation unit is in the OFF region. When a switching operation is performed in the normal mode, including a plurality of times that the operation part is positioned in the on region, the control device switches to the on-lock mode, and in the on-lock mode, the rotation speed of the motor can be set according to the movement amount of the operation part from the initial position during the switching operation.

Description

Technical Field

[0001] The present invention relates to working machines such as a blower. Background Art

[0002] As an example of a working machine, there is known a blower including: a fan that rotates using the driving force of a motor; a housing that accommodates the motor and the fan; and a nozzle that discharges air along an air flow generated by the rotation of the fan.

[0003] As a blower as described above, a blower whose rotation speed can be changed according to the amount of operation of a trigger is disclosed in, for example, Patent Document 1. This blower is locked when a tactile switch provided separately from the trigger is operated.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Publication No. 2014-36939 Summary of the invention

[0007] Problems to be solved by the invention

[0008] In the structure of the blower (operating machine) described in the above-mentioned Patent Document 1, the operator needs to operate both the trigger and the tactile switch when performing the on-locking operation. Therefore, there is room for further improvement of the structure in order to improve the operability when performing the on-locking operation. In addition, by providing both the trigger and the tactile switch as the operating parts, the operating machine becomes larger, so there is room for further simplification of the structure.

[0009] Other objects of the present invention will become apparent from the description of the embodiments described below.

[0010] Means for solving problems

[0011] The working machine of the present invention comprises: a motor; an operating part, which can be moved from an initial position by an operator's operation; and a control part, which controls the drive of the motor according to the operating state of the operating part and can detect the position of the operating part. Moreover, the control part performs control to switch to multiple action modes including a normal mode and an on-lock mode. Specifically, the control part performs the following control in the normal mode: the motor is driven while the operating part is in the on area, and the drive of the motor is stopped while the operating part is in the off area. In addition, the control part drives the motor at a fixed rotation speed regardless of the position of the operating part in the on-lock mode. Moreover, when a switching action including the operating part being located in the on area multiple times is performed in the normal mode, the control part switches to the on-lock mode. In the on-lock mode, the control part controls the action of the motor so that the rotation speed of the motor is fixedly set according to the movement amount of the operating part from the initial position in the switching action.

[0012] Effects of the Invention

[0013] According to the present invention, the operability of the working machine can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a side view showing the structure of the working machine according to Embodiment 1 of the present invention.

[0015] Figure 2 Yes means Figure 1 A side sectional view of the internal structure of the working machine shown.

[0016] Figure 3 It means in Figure 1 The illustrated working machine is a side view of a state in which the main nozzle is removed.

[0017] Figure 4 Yes means Figure 1 A circuit block diagram showing the structure of a control system of a working machine shown.

[0018] Figure 5 This is a diagram for outlining the operations in the normal mode and the on-lock mode and the state transitions between these modes.

[0019] Figure 6 This is a timing chart for comparing and explaining the relationship between the duty ratio and the motor speed with respect to the amount of trigger pull.

[0020] Figure 7 This is a flowchart illustrating the control operation of the control unit. DETAILED DESCRIPTION

[0021] Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In this embodiment, a blower 1 is taken as an example of a working machine for description. Figure 1 As shown, the blower 1 is a working machine that blows air taken in from the back side and discharges it from a nozzle provided on the front side to a working area or the like, and is also called an air dust collector or the like.

[0022] The structure of the blower 1 is described. The blower 1 includes: a motor 10; a fan 10a, which is rotated by the driving force of the motor 10 to generate an air flow F1 in the axial direction C1 along the rotating shaft of the motor 10; a shell 2, which accommodates the motor 10 and the fan 10a inside and has an exhaust part 12 on the front side (one side) of the axial direction C1; and a main nozzle (nozzle part) 6, which is formed in a cylindrical shape and can be detachably installed on the exhaust part 12.

[0023] The housing portion 2 includes: a motor housing (first housing portion) 3, which accommodates a motor 10 and a fan 10a therein and has an exhaust portion 12; a handle portion 4, which extends from the motor housing 3 in a direction (up and down direction) intersecting the axial direction C1; and a battery mounting portion (second housing portion) 5, which is connected to the handle portion 4 in a manner that is located on the opposite side of the motor housing 3 with the handle portion 4 therebetween.

[0024] In other words, the motor housing 3 and the battery mounting portion 5 extend along the axial direction C1 in a manner substantially parallel to each other at both ends of the handle portion 4. That is, one end of the handle portion 4 is connected to the motor housing 3, and the other end of the handle portion 4 is connected to the battery mounting portion 5. The housing portion 2 has two half-shells formed of a synthetic resin such as nylon or polycarbonate, and the housing portion 2 is assembled by butting the two half-shells.

[0025] In the blower 1 of the present embodiment, the direction along the rotation axis of the motor 10 is referred to as the axial direction C1, also referred to as the front-rear direction, and the direction (extension direction E1) in which the handle 4 extends and intersects the front-rear direction is referred to as the up-down direction. In addition, the direction orthogonal to the front-rear direction and the up-down direction is referred to as the left-right direction.

[0026] like Figure 2 As shown, a motor 10 and a fan 10a are housed in the motor housing 3. The motor 10 has a stator 10b as a coil and a rotor 10c as a magnet, and is, for example, a brushless motor. The fan 10a is a centrifugal fan mounted on the rotating shaft of the rotor 10c, and sends air taken in from an air intake portion 11 at the rear of the motor housing 3 toward a main nozzle 6 mounted on the front side of the motor housing 3. Specifically, the motor 10 including the fan 10a is disposed in a cylindrical container in the motor housing 3. The main nozzle 6 is an example of a nozzle.

[0027] The motor 10 takes in air through the mesh portion 11a of the air intake portion 11 by the rotation of the fan 10a, and sends the taken-in air along the inner wall 10d of the cylindrical container toward the main nozzle 6. At this time, the rotation of the fan 10a generates an air flow F1 flowing along the axial direction C1, and the air transported by the air flow F1 is discharged from the front end of the main nozzle 6.

[0028] Furthermore, a motor substrate 10 e is mounted on the motor 10 . The motor substrate 10 e carries an inverter circuit of the motor 10 and a sensor for detecting the rotation position of the rotor 10 c . The motor substrate 10 e is also accommodated in the motor housing 3 .

[0029] In addition, the handle 4 has a trigger (operating portion) 9, which is arranged to protrude on the front side (one side) of the motor housing 3 in the axial direction C1, and can be pressed (operated by grasping) by an operator (not only a human, but also a robot, etc.). The trigger 9 is configured to be able to Figure 4 The trigger switch 9A described later in the figure reciprocates integrally and can detect the amount of operation (pull amount) of the trigger (see appropriately). Figure 4 The trigger switch detection amount detection unit 87 and the control unit 100 shown in the figure).

[0030] Furthermore, a control board 8 equipped with a microcomputer is provided inside the handle portion 4. In addition, a battery pack 7 for supplying power to the motor 10 is detachably mounted on the battery mounting portion 5. Therefore, when the trigger 9 is operated, the fan 10a rotates by the driving force of the motor 10, and the rotation of the fan 10a generates an air flow F1 in the axial direction C1. In this way, the air taken in from the rear air intake portion 11 is transported forward as the air flow F1 and discharged from the front end of the main nozzle 6.

[0031] like Figure 2 As shown, a protrusion 15 protruding forwardly relative to the motor housing 3 is provided just below the exhaust portion 12 of the motor housing 3. The protrusion 15 includes an LED 17 that brightly illuminates the portion where the air is blown and an upper holding portion (first holding portion) 13 adjacent thereto. That is, by providing the LED 17 on the protrusion 15 protruding forwardly relative to the motor housing 3, the working place can be made brighter.

[0032] Next, refer to Figure 1 to Figure 3 The structure of the main nozzle 6 provided in the blower 1 will be described. The main nozzle 6 is formed in a cylindrical shape, and the diameter of the other end side portion is larger than that of the one end side portion.

[0033] Specifically, in Figure 2The base end side portion (other end side portion) 6b to which the exhaust portion 12 of the motor housing 3 shown in the figure is installed has an air intake port 6d as a nozzle, and the front end side portion (one end side portion) 6a located on the side opposite to the base end side portion 6b has an exhaust port 6e as a nozzle. Moreover, in the main nozzle 6, the base end side portion 6b is thicker than the front end side portion 6a, and has a tapered shape that becomes thinner toward the front end side. Therefore, the relationship of the diameter D2 of the air intake port 6d of the base end side portion 6b is greater than the diameter D1 of the exhaust port 6e of the front end side portion 6a. In addition, a convex portion is formed on the outer periphery of the base end side portion 6b (refer to Figure 2 ).

[0034] Figure 3 It means in Figure 1 The side view of the working machine shown in FIG. 1 is a state where the main nozzle is removed. Figure 3 As shown, in the blower 1 of the present embodiment, the main nozzle 6 removed from the exhaust portion 12 can be fitted into (in other words, accommodated in) the motor housing 3 .

[0035] When the main nozzle 6 is mounted on the exhaust portion 12 of the motor housing 3, the main nozzle 6 can be mounted on the motor housing 3 by fitting the protrusion of the base end side portion 6b of the main nozzle 6 into a groove (not shown in detail) provided in the exhaust portion 12 and rotating the base end side portion 6b. In addition, the main nozzle 6 is formed of, for example, hard rubber.

[0036] Figure 4 Yes means Figure 1 The circuit block diagram of the structure of the control system of the working machine shown in FIG. Figure 4 As shown, the blower 1 includes a structure for electrically connecting the motor output portion 30 , the battery pack 7 , and the substrate unit 80 .

[0037] The motor output unit 30 includes the above-mentioned motor 10 and a motor control unit 31 for controlling the power supplied to the motor 10 and thus controlling the operation of the motor 10. The motor control unit 31 controls the operation (rotation mode) of the motor 10 based on a control signal output from a control signal output circuit 82 described later. In addition, the motor control unit 31 detects the rotation speed of the motor 10 and supplies the detection result to the control unit 100 through the rotation speed detection circuit 81.

[0038] The battery pack 7 is, for example, a rechargeable secondary battery (lithium ion battery, etc.). Figure 4 , having a structure in which a plurality of batteries are housed (packaged) in a state of being connected in series in a predetermined container or the like.

[0039] The substrate unit 80 mainly includes a plurality of circuits mounted on the control substrate 8. Specifically, the substrate unit 80 includes connectors 88 and 89 connected to the trigger switch 9A of the trigger (operating unit) 9, and a rotation speed detection circuit 81 and a control signal output circuit 82 connected to the motor control unit 31 of the motor output unit 30.

[0040] In addition, if Figure 4 As shown, the substrate unit 80 includes a current detection circuit 83, a power switch circuit 84, a power circuit 85, a trigger switch operation detection circuit 86, a trigger switch operation amount detection unit 87, and a control unit 100 that controls the above circuits (blocks).

[0041] The current detection circuit 83 is connected to the battery pack 7 and the negative electrode side of the motor control unit 31 in the motor output unit 30, and outputs the detected current value to the control unit 100. The power switch circuit 84 is connected to the battery pack 7, and outputs the difference between the on and off of the main power switch (not shown) to the power circuit 85. When receiving a signal indicating that the main power switch is on from the power switch circuit 84, the power circuit 85 applies a predetermined voltage to the control unit 100.

[0042] The trigger switch operation detection circuit 86 detects whether the trigger switch 9A is operated and outputs the detection result to the control unit 100. The trigger switch operation amount detection unit 87 detects the operation amount of the trigger switch 9A (substantially corresponding to the pulling amount of the trigger 9) and outputs the detection result to the control unit 100.

[0043] The control unit 100 is a hardware processor such as a CPU or a microcomputer. The control unit 100 outputs a control signal to the motor control unit 31 via the control signal output circuit 82 based on the detection results of the trigger switch operation detection circuit 86 and the trigger switch operation amount detection unit 87 .

[0044] Next, a conventional structure related to the on-lock drive and an outline of the main parts in the present embodiment will be described.

[0045] In the conventional structure of the working machine, the on-lock drive is configured as follows. For example, when the trigger fixing switch (the tactile switch described above) not shown in the figure is operated to be on and the trigger 9 is pulled, for example, to the maximum amount, the rotation speed of the motor 10 is controlled to be fixed regardless of the operation amount (pull amount) of the trigger 9, thereby performing the on-lock drive. In addition, the trigger fixing switch may be either an electrical structure or a mechanical structure.

[0046] However, in the above-mentioned conventional structure, the cost becomes high because the trigger is used to fix the switch. In addition, in the above-mentioned conventional structure, it is believed that there is room for improvement in the operator's operability (complexity of operation) when transferring to the on-lock drive. And, it is believed that the above-mentioned conventional structure has limitations (it can be said to be an obstacle) for the multi-stage on-lock drive, in other words, for the development of a specification that fixes the rotation speed of the motor 10 in multiple stages.

[0047] Therefore, in this embodiment, the following configuration is proposed and adopted regarding the on-lock drive.

[0048] In general, in the working machine of this embodiment, when the operator operates (pulls) the trigger (operating unit) 9 multiple times in a short period of time, the rotation speed of the motor 10 is fixed according to the pull amount during the operation, thereby performing on-lock driving.

[0049] More specifically, in the working machine of the present embodiment, the rotation of the motor 10 can be switched to a plurality of operation modes, which are the normal mode and the on-lock mode, through the control of the above-mentioned control unit 100. In addition, as "a plurality of operation modes", other (third and subsequent) modes may be further provided, but in order to avoid an increase in the number of pages and complication of the description, the description of the third and subsequent modes is omitted.

[0050] In the working machine of the present embodiment, the control unit 100 performs control in the normal mode to drive the motor 10 while the trigger (operating unit) 9 is in the on region and to stop driving the motor 10 while the trigger 9 is in the off region.

[0051] More specifically, in the normal mode, the control unit 100 controls the rotation speed of the motor 10 according to the movement amount of the trigger switch 9A that operates integrally with the trigger (operating unit) 9. The operation of the motor 10 is the same as in the past, so further detailed description is omitted.

[0052] Next, refer to Figure 5 The operations in the normal mode and the on-lock mode and the transition between these modes are described.

[0053] Figure 5 This is a diagram for outlining the operations of the working machine in the normal mode and the on-lock mode and the state transitions between these modes according to the present embodiment.

[0054] First, the normal mode will be described. In the following description, the "initial state" of the trigger 9 refers to a state in which the pull amount of the trigger 9 (operating portion) is zero.

[0055] In the initial state (refer to Figure 5When the operator pulls the trigger 9 by any amount of pull (see appropriately Figure 5 In the [Trigger Hold]), the control unit 100 shifts the mode of the working machine to (or maintains it in) the normal mode.

[0056] In the normal mode, the motor 10 is driven according to the amount of the trigger 9 being pulled by the control unit 100. Generally, in the normal mode, the larger the amount of the trigger 9 being pulled, the more the amount of power supplied to the motor 10 increases, the motor 10 rotates at a high speed, and the air volume increases. On the contrary, the smaller the amount of the trigger 9 being pulled, the less the power supplied to the motor 10 decreases, the rotation speed of the motor 10 decreases, and the air volume decreases.

[0057] Next, when the trigger 9 returns to the initial state (pull amount is zero) from the normal mode, the power supplied to the motor 10 becomes zero under the control of the control unit 100, and the motor 10 stops. However, in reality, the motor 10 continues to rotate due to inertia, so there is a Figure 5 The motor 10 does not stop when the "stop" in the Figure 5 The "stop" state in the program is called "stop mode".

[0058] (Overview of Lock Mode)

[0059] Next, the lock mode is described. In this embodiment, in the above-mentioned stop mode (appropriately refer to Figure 5 When the operator quickly pulls (presses) the trigger 9 twice in the "stop" state, the control unit 100 controls the stop mode to transfer (state transition) to the on-lock mode.

[0060] Here, the on-lock mode is generally a mode in which the amount of electric power supplied to the motor 10 is fixed. In other words, the on-lock mode is a mode in which air is blown because the amount of electric power supplied to the motor 10 is fixed even when the trigger 9 is returned to the initial state (the amount of pull is zero) due to the operator releasing the pressing of the trigger 9 or the like.

[0061] In the present embodiment, the on-lock mode is roughly divided into two types: (1) a "weak on-lock drive state" in which the amount of power supplied to the motor 10 is small, and (2) a "strong on-lock drive state" in which the amount of power supplied to the motor 10 is larger than (1).

[0062] In addition, the connection lock mode is not limited to the above two modes, and for example, it can also be configured to have (3) a "medium connection lock drive state" in which the amount of power supplied to the motor 10 is medium, or it can be configured to subdivide the drive state (such as (4), (5)...) into more stages. On the other hand, such a subdivided structure becomes complicated if it is described in detail, so in order to simplify it as much as possible, the description is omitted. In the following, the connection lock mode is concentrated on (1) a weak connection lock drive state and (2) a strong connection lock drive state for description.

[0063] In the present embodiment, when the trigger 9 is quickly pulled (pressed) twice, if the pulling amount of the trigger 9 exceeds the threshold value twice (see appropriately), Figure 5 In the strong on-lock driving state in the on-lock mode, the amount of power supplied to the motor 10 is greater than that in (1) above, so that stronger air (wind) is discharged (blown) from the front end of the main nozzle 6.

[0064] On the other hand, when the trigger 9 is quickly pulled (pressed) twice, even if the amount of pulling the trigger 9 once is less than the threshold value (see appropriately). Figure 5 In the weak on-lock driving state in the on-lock mode, the amount of power supplied to the motor 10 is smaller than that in the above (2), so a weaker wind is blown.

[0065] As a modified example, the total value of the amount of the trigger 9 being pulled twice (in other words, the average value) may be used as a threshold value to switch between the weak on-lock drive state and the strong on-lock drive state.

[0066] In addition, when expressed metaphorically for easy understanding, this operation can be said to be equivalent to a double-click operation of a mouse, and therefore, for convenience, this operation may be referred to as a “double-click” below.

[0067] Next, refer to Figure 6 , the relationship between the pulling amount of the trigger 9 and the rotation speed of the motor 10 is described. Figure 6 This is a timing chart for comparing and explaining the relationship between the duty ratio and the motor speed with respect to the amount of trigger pull.

[0068] exist Figure 6The graphs arranged in three sections are timing diagrams showing the values ​​of the trigger 9 pull amount (hereinafter, sometimes referred to as the pull amount), the duty ratio, and the motor speed from the top, respectively, and the horizontal axis of the graph represents the time axis. In addition, the range in which the pull amount of the trigger 9 is greater than 0 and less than the contact connection corresponds to the disconnection area of ​​the operating part, and the range in which the pull amount of the trigger 9 is greater than the contact connection and less than the full pull amount corresponds to the connection area of ​​the operating part.

[0069] Reference Figure 6 In the initial state after the main power is turned on (time t0 at the left end of each graph), the values ​​of the triggering amount, duty cycle and motor speed are all zero.

[0070] Thereafter, when the trigger 9 is pulled from the initial position from the time point of time t1, the contact of the trigger switch 9A is turned on after the pulling amount (refer to the "contact turned on" in the graph of time t2 and pulling amount), and the duty ratio at this timing increases to 6%. In the state of the duty ratio of 6%, the motor speed increases to about 30,000 (rpm) in this example (refer to the graph of the speed at time t3).

[0071] After that, when the amount of pulling the trigger 9 further increases, the speed adjustment of the motor 10 starts (refer to the value of "starting speed adjustment" in the figure), and the duty ratio increases from 6%. With this increase, the rotation speed of the motor 10 further increases (refer to the values ​​of each graph in the period from time t3 to time t4 as appropriate). Here, when the duty ratio increases from 6% to 100%, the rotation speed of the motor 10 increases to the maximum speed (about 80,000 revolutions in this example) (refer to the graph of the rotation speed at time t4).

[0072] Furthermore, in the normal mode, the duty cycle is maintained at 100% within the range of the trigger 9 being pulled from the amount corresponding to the maximum speed adjustment to the total pull amount, and the rotation speed of the motor 10 is also maintained at the maximum speed (approximately 80,000 rpm).

[0073] Thereafter, when the amount of trigger 9 pulled is gradually reduced from the total amount of pulling, the rotation speed of motor 10 is maintained at the highest speed (about 80,000 rpm) until the amount of pulling corresponding to the maximum speed regulation (refer to the values ​​of each graph at time t5 as appropriate).

[0074] When the pull amount of the trigger 9 is further reduced from the pull amount corresponding to the maximum speed adjustment, the duty ratio and the rotation speed of the motor 10 also decrease as the pull amount decreases (refer to the values ​​of each graph during the period from time t5 to time t6 as appropriate).

[0075] (Transition to on-lock mode)

[0076] Next, the states of the triggering amount, the duty ratio, and the motor rotation speed when switching to the on-lock mode are described.

[0077] <Transition to weak mode>

[0078] Reference Figure 6 As can be seen from the left and right centers of each graph (time t8 to time t11), when the trigger 9 is pulled twice (double-clicked) within a predetermined threshold time (200 milliseconds (ms) in this example), the waveform of the duty ratio also rises twice. In addition, the action of the motor 10 corresponding to the two rises of the waveform of the duty ratio is slightly rotated as shown in the graph of the "rotation speed".

[0079] At this time, no more than 2 times of the trigger 9 are pulled. Figure 6 If the threshold value TH (in this example, the detent amount of 95% of the maximum speed adjustment) shown is actuated even once, a transition process to the weak mode is performed.

[0080] More specifically, when the second pull of the trigger 9 ends, that is, when the contact of the trigger switch 9A becomes disconnected, the transition to the weak mode begins, and the motor 10 is kept at a low speed (about 30,000 revolutions in this example) to enter the on-lock state (see time t11 to time t12). In the on-lock state in the weak mode, according to Figure 6 As can be seen from the graph shown in the middle section of , the duty ratio is maintained at approximately 6%. The rotation speed of the motor 10 at a low speed (approximately 30,000 rpm in this example) corresponds to the second rotation speed.

[0081] <Transition to strong mode>

[0082] Reference Figure 6 As can be seen from time t12 to time t15 in the graphs shown, similarly to the above, when the trigger 9 is pulled twice within a predetermined time (200 ms) and both of the two pulling actions exceed the threshold TH (95% of the maximum speed adjustment), the transition process to the strong mode is performed.

[0083] In more detail, referring to the graph of "rotation speed" from time t12 to time t15, it can be seen that the period from the first pull (time t12) to the completion of the second pull (time t15) in the action of pulling the trigger 9 twice from the on-lock state (period B) becomes the normal state. Then, when the second pull of the trigger 9 is completed (when the contact of the trigger switch 9A becomes disconnected), the transition to the strong mode begins, and the motor 10 is kept at a high speed (about 80,000 revolutions in this example) to become the on-lock state (refer to time t15 to time t16). In the on-lock state of this strong mode, according to Figure 6As can be seen from the graph shown in the middle section of , the duty ratio is maintained at approximately 100%. The rotation speed of the motor 10 at high speed (approximately 80,000 revolutions in this example) corresponds to the first rotation speed.

[0084] <Return to normal mode>

[0085] exist Figure 6 In the example shown, as shown at time t16, by pulling the trigger 9 in the above-mentioned on-lock state, the contacts of the trigger switch 9A become on, thereby returning to the normal mode (refer to period E). In this example, at time t17, the trigger 9 returns to the initial state (the duty cycle and the number of revolutions are 6% and 30,000 rpm, respectively), and the motor 10 stops at time t18.

[0086] As described in detail above, the working machine (blower 1) of the present embodiment includes: a motor 10; an operating unit 9 that can be moved from an initial position by an operator's operation; and a control unit 100 that controls the driving of the motor 10 according to the operating state of the operating unit 9 and can detect the position of the operating unit 9. In addition, the control unit 100 performs control to switch to a plurality of operation modes including a normal mode and an on-lock mode. Specifically, in the normal mode, the control unit 100 drives the motor 10 while the operating unit 9 is in the on region, and stops the driving of the motor 10 while the operating unit 9 is in the off region. In addition, in the on-lock mode, the control unit 100 drives the motor 10 regardless of the position of the operating unit 9. In addition, when a switching operation including the operating unit 9 being in the on region multiple times is performed in the normal mode, the control unit 100 switches to the on-lock mode, and in the on-lock mode, controls the operation of the motor 10 so that the rotation speed of the motor 10 is fixedly set according to the movement amount of the operating unit 9 from the initial position in the switching operation.

[0087] According to the working machine of this embodiment having such a configuration, workability can be improved.

[0088] The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the invention.

[0089] <Modification>

[0090] In the above embodiment, the threshold value (first threshold value) TH of the pull amount is described as 95% of the maximum speed of the trigger (operating unit) 9. The value of the threshold value TH is not limited to this, and can be set to any value in the range of 60% to 100% of the maximum speed.

[0091] In addition, in the above-mentioned embodiment, the case where the time threshold is 200 ms is described, but the time threshold is not limited to this, and can be set to any value within the range of 60 ms to 2000 ms.

[0092] Description of Reference Numerals

[0093] 1…blower (operating machine), 2…housing, 3…motor housing (first housing), 4…handle, 5…battery mounting portion (second housing), 6…main nozzle (nozzle), 6a…front end portion (one end portion, first housing end), 6b…base end portion (other end portion, second housing end), 6c…outer periphery, 6d…air intake port, 6e…exhaust port, 6f…convex portion, 7…battery pack, 8…control board, 9…trigger (operating portion), 9A…trigger switch, 10…motor, 10a…fan, 10b…stator, 10c…rotor, 10d…inner wall, 10e…motor board, 11…air intake portion, 11a…mesh portion, 12…exhaust portion, 12a…groove portion, 13…upper retaining portion (first retaining portion retaining portion), 13a…first groove portion, 13b…second groove portion 14…lower side retaining portion (second retaining portion retaining portion), 14a…protrusion, 15…protrusion, 16…sub-nozzle (nozzle portion), 17…LED, 18…accommodation space, 19…operation space, 30…motor output portion, 31…motor control base, 80…substrate unit, 81…rotation speed detection circuit, 82…control signal output circuit, 83…current detection circuit, 84…power switch circuit, 85…power circuit, 86…trigger switch detection circuit, 87…trigger switch operation amount detection portion, 88, 89…connector, 100…control portion, C1…axial direction, D1, D2…caliber, E1…extension direction, F1…air flow, G1, G2…diameter, L1…length of handle portion, L2…length of handle portion + trigger, L3, L4, L5…distance.

Claims

1. A working machine, characterized in that: The working machine includes a motor, an operating unit and a control unit, and can be switched, wherein the operating unit can be moved from an initial position by an operator's operation, and the control unit controls the driving of the motor according to the operating state of the operating unit and can detect the position of the operating unit. In the normal mode, the control unit drives the motor while the operation unit is in the on region, and stops driving the motor while the operation unit is in the off region. The control unit drives the motor regardless of the position of the operating unit in the on-lock mode. When a switching action including the operating unit being located in the connection area multiple times is performed in the normal mode, the control unit switches the action mode to the connection lock mode, in which the rotation speed of the motor is set according to the movement amount of the operating unit from the initial position in the switching action.

2. The working machine according to claim 1, characterized in that: The switching operation is a reciprocating operation in which the operating unit moves from the ON region to the OFF region, passes through the ON region again, and then moves to the OFF region again.

3. The working machine according to claim 1, characterized in that: The control unit controls the motor to be driven at a first rotation speed and a second rotation speed lower than the first rotation speed in the on-lock mode. When a maximum value of the movement amount of the operating portion from the initial position exceeds a first threshold value in all operations in which the operating portion is located in the on-range a plurality of times during the switching operation, the control portion drives the motor at the first rotation speed.

4. The working machine according to claim 1, characterized in that: In the on-lock mode, when the operation portion moves from the off region to the on region, the control portion controls the driving of the motor so as to switch to the normal mode.

5. The working machine according to claim 1, characterized in that: The multiple times is 2 times.

6. The working machine according to claim 3, characterized in that: The first threshold is set to a range of 60% to 100% of the maximum speed adjustment of the operating unit.

7. The working machine according to claim 5, characterized in that: The control unit performs a process of shifting to the on-lock mode when the time of each of the two reciprocating operations is within a range of 60 ms to 300 ms.

8. The working machine according to claim 1, characterized in that: The working machine comprises: a fan driven by the driving force of the motor; a housing that accommodates the motor and the fan and has an air intake port that serves as an inlet for an air flow generated by the fan and an air discharge port that serves as an outlet for the air flow generated by the fan; as well as The nozzle is detachably mounted to the exhaust port.

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