JP6000399B2 - Electric working machine manufacturing method - Google Patents

Description

  The present invention relates to a method for manufacturing an electric working machine that controls driving of an electric motor fed from a battery based on a switch operation and uses the rotational force of the electric motor for tillage work or the like.

  Patent Document 1 discloses a constant speed type walking work machine that controls an electric power supplied from a battery to a constant speed electric motor by operating an operation device such as an operation lever switch or a main switch provided in a control unit. Yes. The walking type working machine described in Patent Document 1 includes a tilling rotary that is operated by a constant speed motor and a battery case that supplies power to the constant speed motor. As an operation device for operating the drive of the motor, a power switch, A limit switch that is turned ON / OFF by a lever is attached. As an electronic control system for motor control, a charge control board and a discharge control board are provided in the battery case, and a signal control board is provided on the machine body side. The signal control board is connected to a power switch and a limit switch that is linked to the operation lever. The signal control board has a function of outputting a control signal to the discharge control board based on signals from the power switch and the limit switch. The discharge control board supplies power from the battery of the battery case to the motor based on the control signal from the signal control board, and drives the motor.

  Further, Patent Document 2 discloses a shift type walking work machine that controls operation of an operation device such as an operation lever switch, a main switch, or a speed setter provided in a control unit to control power supply from a battery to an electric motor. It has been. The speed change type walking type work machine described in Patent Document 2 includes a tilling rotary that is operated by a speed change motor, and a battery case that supplies power to the speed change motor. As an operation device for operating the drive of the speed change motor, a key is used. A switch and a limit switch that is turned on and off by a lever are attached. Furthermore, a rotation speed setting dial for the motor is also provided. As an electronic control system for motor control, a charge control board and a discharge control board are provided in the battery case, and a signal control board is provided on the machine body side. The signal control board is connected to a power switch, a limit switch linked to the operation lever, and a rotation speed setting dial. The signal control board has a function of outputting a control signal to the discharge control board based on signals from a power switch, a limit switch, and a rotation speed setting dial. The discharge control board includes an output control circuit, a current detection circuit, a switching circuit, a current smoothing circuit, an overdischarge prevention circuit, and a short circuit prevention circuit, and generates a desired motor speed based on a control signal from the signal control board. Electric power is generated and supplied to the transmission motor.

  In the constant speed type walking type work machine, the power supplied from the battery to the constant speed motor through the discharge control board may be constant, but in the variable speed type walking type work machine, the power from the battery is supplied to the discharge control board. Electric power adjusted based on a signal from the rotation speed setting dial is supplied to the transmission motor. Therefore, the structure of the battery case that has a battery and a discharge control board and is mounted on the body of the walking type working machine is completely different between the constant speed type walking type working machine and the variable speed type walking type working machine. These are not interchangeable, and need to be prepared separately when manufacturing a constant speed type walking type working machine and a variable speed type walking type working machine. This is disadvantageous in both inventory management and production management.

JP 2011-72211 A (paragraph number [0017-0052], FIG. 6) JP 2011-93493 A (paragraph number [0010-0063], FIG. 7)

  In view of the above circumstances, an object of the present invention is to provide a method for effectively producing both a constant speed type walking type working machine and a variable speed type walking type working machine having a detachable battery unit.

A battery-side connector having a main switch terminal and a signal terminal which is connected with the feeding terminal and the signal line which is connected to the feed line, a power supply switch provided on the feed line, feed through the main switch terminals and said signal terminals A battery unit including a motor power supply control unit that controls opening and closing of the power supply switch based on a signal to be transmitted;
A constant-speed electric motor for transmitting power to the work unit, a main switch provided on the steering unit, and a said battery-side connector part which can be connected body side connector unit, to the body-side connector portion, the constant speed and the feeding terminal which is connected with an electric motor, a first terminal coupled with the main switch, and the constant speed aircraft and a motor signal line terminal connected to the constant-speed electric motor,
Transmission and speed electric motor for transmitting power to the work unit, provided in the steering unit and the main switch及beauty motors speed setter, the transmit power based on the speed setting by the motor speed setter to the speed electric motor a drive control unit which includes a said battery-side connector part which can be connected body side connector unit, to the body-side connector portion, and the feeding terminal which is connected to the drive control unit, the terminal which is connected with the main switch When the shifting body and a control signal line terminal connected to the drive control unit,
In the electric working machine manufacturing method for manufacturing a constant speed electric working machine and a variable speed electric working machine in combination, in order to achieve the above object,
In the battery unit, the power supply terminal and the power-supplied terminal are energized, the main switch terminal and the first terminal are energized, and the signal terminal and the motor signal are supplied to the constant speed body. It is attached so that the wire terminal is energized,
In the battery unit, the power feeding terminal and the power-supplied terminal are energized, the main switch terminal and the main terminal are energized, and the signal terminal and the control signal line terminal are connected to the shifting machine body. And are attached to energize.

The battery unit used in this method is specialized in the function of supplying power to the machine side through the power supply line based on the switch state sent from the machine side through the signal line. It is configured to be used for both electric work machines. When this battery unit is attached to the body of a constant-speed electric work machine, that is, the machine for constant speed, or when it is attached to the body of a variable-speed electric work machine, that is, the body for shifting, the power supply line and the signal line are connected. The motor power supply control unit incorporated in the battery unit has a signal line (electric connection between the signal terminal and the motor signal line terminal in the constant speed electric work machine, and electric connection between the signal terminal and the control signal terminal in the variable speed electric work machine). Based on the signal indicating the switch state input through the constant-speed electric motor provided to the constant-speed machine body from the power supply line , or to the variable- speed electric motor via the drive control unit provided to the transmission machine body Supply. In the speed change device, the drive control unit further converts the received electric power into speed change power based on the speed setting by the motor speed setter and supplies it to the speed change electric motor. As a result, the variable speed electric motor rotates or stops in the switched state, and the rotation speed at that time is a speed corresponding to the speed setting of the motor speed setting device.
Therefore, the same battery unit can be used regardless of whether the constant speed electric working machine is manufactured or the variable speed electric working machine is manufactured, so that efficient manufacturing is possible. Furthermore, since the battery unit is provided with a motor power supply control unit and a power supply switch that supply predetermined power according to the switch state, the configuration of the electronic control system on the airframe side can be minimized. .

  Further, in one of the preferred embodiments, a single connector unit is used in which the power supply line and the signal line are simultaneously connected through attachment of the battery unit to the constant speed machine body or the transmission machine body. . With this configuration, it is convenient that the battery unit is mounted on the machine body and the power supply line and the signal line on the battery unit side and the machine body side are connected at the same time. In addition, the use of a connector with a common power supply line and signal line simplifies the routing of the electric wire.

It is a schematic diagram illustrating the basic technique of a method for manufacturing a constant speed electric work machine and a variable speed electric work machine with a common battery unit according to the present invention. It is a perspective view which shows the external appearance of the constant-speed electric working machine manufactured with the method by this invention. It is a perspective view which shows the external appearance of the transmission electric working machine manufactured with the method by this invention. It is a side view of an electric working machine. It is a top view of the speed setting device and main switch which were provided in the handle. It is a side view of the body part of an electric working machine. It is a side view which shows mounting | wearing of the battery unit to the body of an electrically-driven working machine. It is a front view which shows mounting | wearing of the battery unit to the body of an electrically-driven working machine in a cross section. It is a functional block diagram of the control electronic system in a constant speed electric working machine. It is a functional block diagram of the control electronic system in a variable speed electric working machine.

  Before describing specific embodiments of the present invention, basic technology of a method for manufacturing a constant speed electric working machine and a variable speed electric working machine, which are manufactured by the manufacturing method according to the present invention and which share a battery unit. Will be described with reference to the schematic diagram of FIG. In FIG. 1, functions of an electric motor drive control electronic system of a constant speed electric work machine ((a) in FIG. 1) and a variable speed electric work machine ((b) in FIG. 1) are schematically shown. Here, it is assumed that the electric working machine is a walking type tiller, and its control unit is a pair of left and right handles, one handle having a main switch and the other handle having a sub switch. An electric motor (hereinafter simply referred to as a motor) transmits rotational power to a working unit configured as a tilling rotor. In the example of FIG. 1, a motor power supply control unit that controls power supply from a battery to a motor is incorporated with a battery in a battery unit that is removably mounted on the body of the electric working machine. Furthermore, a power supply switch that creates an open state (power supply state) and a closed state (cut-off state) by a control signal output from the motor power supply control unit is interposed in the power supply line from the battery to the motor.

  A connector unit is provided between the battery unit and the airframe to be connected / disconnected when the battery unit is attached / detached to / from the airframe. Between the battery unit and the fuselage, there is only a power supply line for supplying power from the battery to the motor (including a power supply ground line on the power supply return side) and a signal line for sending a switch status signal to the motor power supply control unit. If a power supply line and a signal line are included in the, a single connector unit is sufficient. Accordingly, the battery unit side connector portion is provided with a power supply terminal for a power supply line (including a ground power supply terminal), a main switch terminal for a main switch, and a sub switch terminal for a sub switch. In addition, the connector portion on the constant-speed machine body side is directly connected to the main switch terminal and connected to the main switch terminal with a power-supplied terminal (including a ground power supply terminal) for a power supply line connected to the power supply terminal. A first terminal and a second terminal connected directly to the sub switch and connected to the sub switch terminal are provided.

  The connector part on the transmission body side includes a power-supplied terminal (including a ground power supply terminal) for a power supply line connected to the power supply terminal, a main terminal that is directly connected to the main switch and connected to the main switch terminal, Similarly, a dummy terminal that is directly connected to the main switch and connected to the sub switch terminal is provided. In other words, in the transmission machine body, the signal line of the sub switch is not connected to the battery unit, and the signal line of the main switch is connected to the battery unit as a dummy of the sub switch. The shift body is provided with a drive control unit that converts electric power sent from the battery unit into shift electric power based on the rotation setting by the rotation setting device. The signal line of the sub switch is connected to the drive control unit.

  In both electric work machines, the main switch can be selectively switched between ON and OFF, and when the switch is switched ON, an ON state signal is given to the motor power supply control unit. On the other hand, the sub switch that can be selectively switched ON and OFF similarly gives the ON state signal or the OFF state signal to the motor power supply control unit in the constant speed electric work machine and is driven in the variable speed electric work machine. Give to the control unit. Therefore, in the constant speed electric working machine, the motor power supply control unit creates a power supply state or a non-power supply state according to the switch state signals of the main switch and the sub switch. On the other hand, in the variable speed electric work machine, the motor power supply control unit creates a power supply state or a non-power supply state according to a switch state signal of only the main switch. However, even if power is supplied from the battery unit, the drive control unit controls power supply to the motor in accordance with the switch status signal of the sub switch. Power will be supplied.

  In the transmission body, a speed setting device for setting the speed of a variable speed electric motor (hereinafter simply referred to as a motor) is provided on the body of the electric working machine, preferably the handle. A drive control unit provided on the power supply line on the machine body controls the electric power sent from the battery, converts the electric power into the driving electric power of the motor, and controls the driving of the motor. In other words, the basic power supply control from the battery to the motor is performed by the motor power supply control unit incorporated in the battery unit, and the power supplied from the battery unit is input and the drive power for driving the motor is output. The final motor drive control is performed by a drive control unit provided in the machine body. In order to perform forward / reverse variable rotation control of the motor, the drive control unit is preferably provided with an inverter control function.

  Hereinafter, a specific embodiment of the present invention will be described by taking an example in which an electric working machine is applied to a walking tiller. FIG. 2 shows a constant speed type walking type tiller, and FIG. 3 shows a speed changing type walking type tiller.

  As shown in FIGS. 2 and 3, the walking type tiller (hereinafter simply referred to as a tiller) 1 illustrated in this embodiment has a tiller rotor 2 at the bottom of the body 10, and a posture change by swinging back and forth. A steering handle 3 as a possible steering unit, a motor 5 for transmitting rotational power to the tilling rotor 2, and a battery unit 4 serving as a power source for the motor 5 are provided. The battery unit 4 is mounted on the support frame 14 rising obliquely rearward from the rear part of the body 10 so that the battery unit 4 can be mounted from the upper side and pulled out upward. A handle 4a is provided on the upper surface of the battery unit 4 so as to be easily carried. The steering handle 3 includes an arm-like right handle portion 3B and a left handle portion 3A, and is pivotally connected to a rearward projecting end portion of the support frame 14 on the base end side. Thereby, when not in use, the steering handle 3 can be folded forward. An artificial resin cover 11 covering the entire motor 5 and the lower half of the battery unit 4 forms the upper surface contour of the tiller 1 in a curved shape. The mounting table 100 whose outline is indicated by a two-dot chain line is a box body into which the lower part of the tiller 1 is inserted, and improves the stability and transportability of the tiller 1 when not in use.

As can be understood from FIG. 4, the airframe 10 is substantially composed of a main frame 15 and a transmission case 17. The main frame 15 creates a motor support surface region for supporting the motor 5 and a battery support surface region for supporting the battery unit 4, and the motor support surface region and the battery support surface region are bent at an angle of about 30 degrees. ing. A swing arm 16 that can swing around a horizontal axis in the transverse direction of the aircraft is attached to the rear end of the main frame 15. The swing arm 16 has a downward posture (shown by a solid line in FIG. 3) and a rearward posture. (Indicated by a two-dot chain line in FIG. 3), a fixing means for fixing the swing arm 16 to the main frame 15 in each posture is provided. This fixing means is simply a lock pin and a lock hole.

  A moving wheel 12 is provided on the free end side of the swing arm 16, and a resistance rod 13 is attached to an intermediate portion of the swing arm 16. The moving wheel 12 is grounded in the downward posture of the swing arm 16, and the resistance bar 13 is grounded in the backward posture of the swing arm 16. The lifting height of the airframe 10 can be changed by changing the attachment position of the resistance rod 13 with respect to the swing arm 16 by the pin connection method.

  The transmission case 17 has a left and right bifurcated structure having a substantially L-shape in side view, in which the worm speed reducer 18 is incorporated, and the motor 5 is bolted to a flange portion formed at the upper end portion thereof. The output shaft of the motor 5 and the input shaft of the worm speed reducer 18 are connected by an intermediate transmission shaft drawn in dotted lines in FIG. 4, and the intermediate transmission shaft extends vertically in the transmission case 17. The output of the worm reducer 18 is transmitted to the drive shaft 20 of the tilling rotor 2 that extends from the lower end of the transmission case 17 to the left and right. A front guard 19 made of a round pipe steel material that extends forward in a loop shape that can be used as a grip portion when carrying the cultivator 1 is bolted to the upper portion of the transmission case 17.

  As shown in FIG. 1, the right handle portion 3B and the left handle portion 3A constituting the steering handle 3 are made of a round pipe material, and grips 3a and 3b are provided in free end regions thereof. A nut-tightening mechanism with a knob is provided to fasten and fix the steering handle 3 to the support frame 14 by a swinging connection portion 30 between the steering handle 3 and the support frame 14. From this configuration, the steering handle 3 can set the steering handle 3 to an arbitrary posture with respect to the support frame 14 by operating the nut with knob.

  As shown in FIG. 2, in the constant speed type walking type tiller, a lever switch device 32 is provided immediately on the machine body side of the grip 3a of the right handle part 3B, and pushed to the machine body side of the grip 3b of the left handle part 3A. A button switch device 31 is provided. The lever switch device 32 incorporates a sub switch 82 that is turned ON / OFF by an operation displacement of a lever that can be operated by a hand holding the grip 3a. The push button switch device 31 incorporates a main switch 81 that is turned ON / OFF by a push operation.

  Further, as shown in FIG. 3, in the shift type walking type tiller, a push button switch device 31 and a speed setting lever device 33 are provided immediately on the body side of the grip 3 b of the right handle portion 3 B, and the left handle portion 3 A A lever switch device 32 is provided immediately on the machine body side of the grip 3a. The speed setting lever device 33 has a horizontal swing lever, and a volume switch 83 linked to the lever is incorporated as a speed setting device. It is possible to output a speed setting signal for setting the speed of the motor 5 in accordance with the volume switch 83 lever swing angle. The push button switch device 31 and the speed setting lever device 33 have a common housing structure, and the lever of the speed setting lever device 33 protrudes from the back of the haze, and the hand of the speed setting lever device 33 holds the grip 3b. The lever is operable.

FIG. 5 shows a push button switch device 31 and a speed setting lever device 33 provided near the grip 3b of the right handle portion 3B.
In this push button switch device 31, when the operation unit is pressed while rotating from the stop position, the operation unit is displaced downward in the rotation axis direction to the ON position, and the main switch 81 is turned on. Since the operation unit at the ON position is held by the meshing method, the ON state of the main switch 81 is held. When the operation unit in the pushed-in state is hit and further pressed, the operation unit is disengaged and rotated, and further displaced upward to return to the initial position (home position) and the main switch 81 is turned off. That is, the push button switch device 31 is a type that mechanically holds ON.

  The speed setting lever device 33 is incorporated in a common housing with the push button switch device 31, but only the swing lever that is the operation lever protrudes from the rear of the housing. This operation lever is connected to a rotor of a volume switch (rotary switch), and can output a signal corresponding to the swing angle of the operation lever. Since the motor 5 can rotate in the forward and reverse directions, the speed of the motor 5 can be adjusted from the maximum forward rotation speed to the maximum reverse rotation speed of the motor 5 through neutral (neutral) where the motor 5 stops by swinging the operation lever. It is.

  As apparent from FIGS. 6, 7, and 8, in the battery support surface region of the main frame 15, the cover 11 forms a battery housing wall 11 a that creates a box-shaped housing space. The battery unit 4 has a rectangular cross section, and the rectangular cross section has the same or slightly larger area than the rectangular cross section of the storage space created by the battery storage wall 11a. Therefore, the battery unit 4 inserted into the housing space of the battery housing wall 11a is firmly held by the elasticity of the battery housing wall 11a.

  A connector 9 for electrical connection between the battery housing wall 11a and the battery unit 4 is provided. The connector 9 includes a battery side connector portion 9a provided at the center of the bottom surface of the battery unit 4 and a machine body side connector portion 9b provided at the center of the bottom surface of the battery housing wall 11a. Here, the battery-side connector portion 9a has a socket shape and the fuselage-side connector portion 9b has a plug shape, but they may be reversed. Since the battery unit 4 is guided by the battery housing wall 11a so that the center is not accurately shifted by the elasticity of the battery housing wall 11a, the battery unit 4 can be reliably inserted into the housing space with the help of gravity. The side connector portion 9a and the fuselage side connector portion 9b are connected. The battery unit 4 accommodated in the accommodation space is pressed and fixed from above by a clamp-type fixture 14 a provided on the handle support frame 14.

  The connector 9 includes a terminal for a power supply line that supplies power from the battery unit 4 to the motor 5, a terminal for a signal line such as the main switch 81, a ground terminal, and a spare terminal for future use. A plurality of connection terminals each including a pin and a pin socket are provided.

Next, the internal structure of the battery unit 4 and the power supply wiring to the motor 5 and the signal wiring for driving control of the motor 5 in the constant speed type walking tiller are shown in the functional block diagram of FIG. It explains using.
The battery unit 4 includes a battery main body 40, a charge / discharge switch unit 41, a controller 42, a power supply 43, a power supply line (positive power supply line) 44 connected to the positive side of the battery main body 40, and a negative side of the battery main body 40. Connected ground wire (minus side feed line) 4
5. Various signal lines 46 and a current switching unit 7 are provided.

  The charge / power supply switch unit 41 includes a power supply switch 41a and a charge switch 41b arranged in series with the power supply line 44, and each is constituted by an FET and a diode as is well known. The power supply switch 41a cuts off the power supply line 44 in the OFF state and connects the power supply line 44 in the ON state to enable power supply from the battery body 40 to the external load. The charging switch 41b enables power from a power adapter (not shown) to be supplied to the battery body 40 via the power supply line 44 during charging.

  The controller 42 is substantially composed of a one-chip microcomputer, and a motor power supply control unit 50 that performs power supply control on the motor 5 and a charge control unit that performs charge control on the battery body 40 by executing hardware and programs. 52 is produced. The motor power supply control unit 50 turns on the power supply switch 41 a based on the ON state of the main switch 81 and the ON state of the sub switch 82, permits power supply from the battery body 40 to the motor 5, and drives the motor 5. Let The power supply unit 43 functions as an internal power supply for the battery unit 4 and supplies power to the controller 42 and the current switching unit 7.

The battery-side connector portion 9a provided in the battery unit 4 includes a power supply socket 91a as a power supply terminal for the power supply line 44 and a first socket (also referred to as a signal terminal) that is a battery side terminal for the first signal line 46a. ) 92a, a second socket 93a is a battery-side terminal (auxiliary switch terminal) for the second signal line 46b, the third socket 94a is a battery terminal for a third signal line 46c (main switch terminal), the A fourth socket 95a which is a battery side terminal for the fourth signal line 46d, a fifth socket 96a which is a battery side terminal for the fifth signal line 46e, and an earth socket 97a as an earth terminal of the earth wire 45 are provided. Yes.

A fuselage-side connector portion 9b provided on the fuselage 10 side so as to correspond to the battery-side connector portion 9a includes a feed pin 91b as a power-supplied terminal for the feed wire 44 and a fuselage side for the first signal line 46a. first pin (also referred to as a motor signal line terminal) 92b is a terminal, the second pin 93b is inboard terminal (second terminal) for the second signal line 46b, inboard terminal for the third signal line 46c A third pin 94b (first terminal), a fourth pin 95b serving as a fuselage side terminal for the fourth signal line 46d, a fifth pin 96b serving as a fuselage side terminal for the fifth signal line 46e, and a ground wire A ground pin 97b as a ground terminal 45 is provided.

  The current switching unit 7 allows a weak current to flow through the signal line when the controller 42 is in a sleep state for the purpose of energy saving when the cultivator 1 is not working, and when the controller 42 wakes up, the signal line is larger than the weak current. Has the function of flowing a large current.

  On the machine body side, the power supply line 44 is connected to the positive contact of the motor 5, and the ground wire 45 is connected to the negative contact of the motor 5. In order to detect overheating of the motor 5, the motor 5 is provided with an overheat switch 84 that is turned off in an overheat state of a predetermined value or more. The overheat switch 84 has one sub-switch 82 connected to the second signal line 46b and the other connected to the upstream side of the overheat switch 84 of the first signal line 46a. As a result, when the overheat switch 84 is operated due to motor overheating, even if the sub switch 82 is in the ON state, the controller 42 can consider the sub switch 82 to be in the OFF state, and stops power supply to the motor 5. be able to. One of the main switches 81 is connected to the third signal line 46c, and the other is connected to the fifth signal line 46e, which is a ground line.

  As described above, the motor 5, the main switch 81, and the sub switch 82 are arranged on the machine body side, and all the control system devices that control the driving of the motor 5 based on signals from the main switch 81 and the sub switch 82 are batteries. Arranged in the unit 4. That is, the drive control of the motor 5 is replaced with the power supply control of the battery unit 4, and the discharge switch for the discharge control originally provided in the battery unit 4 is replaced with the charge / power supply switch unit 41 for the drive control of the motor 5. Therefore, the electronic devices and wiring on the fuselage side are simplified.

  Next, the internal structure of the battery unit 4 and the flow of signals for supplying power to the motor 5 and controlling the motor 5 in the machine body 10 in the variable-speed walking type tiller 1 will be described with reference to the functional block diagram of FIG. I will explain.

  The battery unit 4 is the same as that of the shift type walking type tiller 1 shown in FIG. However, as will be described later, any switch state signal that enters the controller 42 of the battery unit 4 through the two signal lines 46 is the signal state of the main switch 81. Therefore, the motor power supply control unit 50 turns on the power supply switch 41 a based on the ON state of the main switch 81 and permits power supply from the battery body 40 to the motor 5.

  A drive control unit 60 that outputs drive power to the motor 5 is provided on the machine body side. The drive control unit 60 includes an inverter unit 61 and a control management unit 62. A signal line 46 x for a volume switch (speed setting device) 83 and a signal line 46 y for a sub switch 82 are connected to the drive control unit 60, and the volume switch (speed setting device) 83 and the sub switch 82 are connected. The switch state signal from is input. The drive control unit 60 controls the inverter unit 61 so as to output drive power based on a signal from the volume switch 83 when the battery unit 4 is in the power supply permission state and the sub switch 82 is in the ON state. For this reason, the power supply line 44 from the power supply pin 91b and the ground line 45 to the ground pin 97b are connected to the drive control unit 60. In addition, the motor 5 is provided with an overheat switch 84 that is turned off in an overheat state of a predetermined value or more in order to detect overheat of the motor 5, and the overheat switch 84 is connected to the drive control unit 60.

The drive control unit 60 is connected by a first pin (also referred to as a control signal line terminal) 92b and a signal line 46w to inform the battery unit 4 of a control state such as motor rotation or abnormal motor stop (overheating). The second pin 93b and the third pin 94b are common terminals and are connected to the main switch 81 through the signal line 46z. The fifth pin 96b is also connected to the main switch 81 as a ground terminal. That is, the second pin 93b corresponding to the second socket 93a among the pin terminals provided on the fuselage side connector portion 9b provided on the fuselage side 10 so as to correspond to the battery side connector portion 9a is a dummy of the sub switch 82. The third pin 94b corresponding to the third socket 94a functions as a main terminal of the main switch 81.

[Another embodiment]
[1] The electric working machine is not limited to an electric power tiller in which a working rotor is applied to the working unit 2, and various electric motors such as an electric lawn mower and an electric snowblower can be changed by appropriately changing the working unit. The present invention can be applied to a work machine.
[2] The mechanical structures of the control unit 3 and the airframe 10 are not limited in the present invention, and various forms can be employed.
[3] Various cross-sectional shapes of the battery unit 4 can be adopted, and the shape of the battery housing wall 11a may be determined so as to create a housing space suitable for the shape.
[4] Various types of switches other than the volume switch can be applied as the speed setting unit 83, and the mounting location thereof may be near the sub switch or may be other than the handle 3.

  The present invention can be applied to various electric working machines equipped with the battery unit 4 and driving the work unit 2 with the motor 5.

1: Electric power tiller (electric working machine)
2: Tillage rotor (work unit)
3: Handle (control section)
4: Battery unit 5: Motor (constant speed electric motor, variable speed electric motor)
9: Connector unit 9a: Battery side connector part 9b: Airframe side connector part 31: Lever switch device (lever switch)
32: Push button switch device (push button switch)
33: Speed setting lever device 10: Airframe (constant speed airframe, speed change airframe)
40: battery 41a: power supply switch 42: controller 44: power supply line 46: signal line 50: motor power supply control unit 60: drive control unit 61: inverter unit 62: control management unit 81: main switch 82: sub switch 83: volume switch (Motor speed setting device)
91a: Power supply socket (power supply terminal)
92a: First socket ( signal terminal )
93a: Second socket (sub switch terminal, terminal)
94a: Third socket (main switch terminal, terminal)
95a: 4 sockets (terminal)
96a: 5th socket (terminal)
97a: Earth socket (terminal)
91b: Feeding pin (powered terminal)
92b: 1st pin ( motor signal line terminal, control signal line terminal )
93b: Second pin (second terminal, dummy terminal)
94b: Third pin (first terminal, main terminal)
97b: Ground pin (terminal)

Claims (3)

A battery-side connector having a main switch terminal and a signal terminal which is connected with the feeding terminal and the signal line which is connected to the feed line, a power supply switch provided on the feed line, feed through the main switch terminals and said signal terminals A battery unit including a motor power supply control unit that controls opening and closing of the power supply switch based on a signal to be transmitted;
A constant-speed electric motor for transmitting power to the work unit, a main switch provided on the steering unit, and a said battery-side connector part which can be connected body side connector unit, to the body-side connector portion, the constant speed and the feeding terminal which is connected with an electric motor, a first terminal coupled with the main switch, and the constant speed aircraft and a motor signal line terminal connected to the constant-speed electric motor,
Transmission and speed electric motor for transmitting power to the work unit, provided in the steering unit and the main switch及beauty motors speed setter, the transmit power based on the speed setting by the motor speed setter to the speed electric motor a drive control unit which includes a said battery-side connector part which can be connected body side connector unit, to the body-side connector portion, and the feeding terminal which is connected to the drive control unit, the terminal which is connected with the main switch When the shifting body and a control signal line terminal connected to the drive control unit,
An electric work machine manufacturing method for manufacturing a constant speed electric work machine and a variable speed electric work machine in combination,
In the battery unit, the power supply terminal and the power-supplied terminal are energized, the main switch terminal and the first terminal are energized, and the signal terminal and the motor signal are supplied to the constant speed body. It is attached so that the wire terminal is energized,
In the battery unit, the power feeding terminal and the power-supplied terminal are energized, the main switch terminal and the main terminal are energized, and the signal terminal and the control signal line terminal are connected to the shifting machine body. A method for manufacturing an electric working machine that is attached to energize.
Machine manufacturing method.   In the constant speed machine, the constant speed electric motor is provided with an overheat switch for detecting heating of the constant speed electric motor,
  The electric working machine manufacturing method according to claim 1, wherein the motor signal line terminal is connected to the overheat switch.   3. The electric working machine manufacturing method according to claim 1, wherein, in the constant speed aircraft, a sub switch is provided in the control unit, and the motor signal line terminal is connected to the sub switch. 4.

Images