JP6687360B2 - Rebar binding machine - Google Patents

Description

  The technique disclosed in this specification relates to a reinforcing bar binding machine.

  Patent Document 1 discloses a reinforcing bar binding machine that binds a plurality of reinforcing bars with wires. The reinforcing bar binding machine includes a binding machine body, a grip provided at a lower portion of the binding machine body, and a battery mounting portion provided at a lower portion of the grip. In the reinforcing bar binding machine, the battery can be attached to and detached from the lower portion of the battery mounting portion. In the reinforcing bar binding machine, the binding machine body feeds a wire by rotation of a feed motor, a guide mechanism that guides the wire sent from the feeding mechanism around a plurality of reinforcing bars, and a wire sent from the feeding mechanism. The cutting mechanism that cuts the wire, the twisting mechanism that twists the wires around the rebars by the rotation of the twisting motor, and the main microcomputer that controls the operation of the feed motor and the twisting motor that are housed under the binding machine body. It has a main board mounted on it and an operation unit provided on the outer surface of the binding machine body. In the rebar tying machine, the grip includes a trigger switch that instructs the rebar tying machine to perform an operation. In the reinforcing bar binding machine, the operation unit and the trigger switch are respectively connected to the main board via wiring.

JP, 2010-184313, A

  In the reinforcing bar binding machine of Patent Document 1, a main switch for switching on / off the power supply of the reinforcing bar binding machine and an on / off state of the power supply of the reinforcing bar binding machine are notified to an operation unit arranged on the outer surface of the binding machine body. The lamp and the adjustment dial for adjusting the wire feed amount are arranged. With such a configuration, it is necessary to connect many wirings between the operation unit and the main board. Movable parts such as a feeding mechanism, a cutting mechanism, and a twisting mechanism are densely arranged between the operation unit arranged on the outer surface of the binding machine body and the main board below the inside of the binding machine body. Since it is necessary to connect the wiring between the operation unit and the main board so as not to interfere with the parts, the assembly work becomes difficult. A technique that can further improve the assembly workability of the reinforcing bar binding machine is expected.

  The present specification discloses a reinforcing bar binding machine for binding a plurality of reinforcing bars by a wire. The reinforcing bar binding machine includes a binding machine body, a grip provided at a lower portion of the binding machine body, and a battery mounting portion provided at a lower portion of the grip. In the reinforcing bar binding machine, the battery can be attached to and detached from the lower portion of the battery mounting portion. In the reinforcing bar binding machine, the binding machine body feeds a wire by rotation of a feed motor, a guide mechanism that guides the wire sent from the feeding mechanism around a plurality of reinforcing bars, and a wire sent from the feeding mechanism. A cutting mechanism for cutting the wire, a twisting mechanism for twisting the wires around the reinforcing bars by the rotation of a twisting motor, a first operating portion provided on the outer surface of the binding machine body, and a lower operation inside the binding machine body. The main board is equipped with a main microcomputer that controls the operations of the feed motor and the torsion motor. In the rebar tying machine, the grip includes a trigger switch that instructs the rebar tying machine to perform an operation. In the reinforcing bar binding machine, the battery mounting portion includes the second operating portion provided on the outer surface of the battery mounting portion. In the reinforcing bar binding machine, the first operating unit, the trigger switch, and the second operating unit are respectively connected to the main board via wiring. The first operation unit may be provided on the upper surface, the rear surface, or any of the left and right side surfaces of the binding machine body. The second operation portion may be provided on the front upper surface, front surface, rear surface, or left or right side surface of the battery mounting portion.

  In the above reinforcing bar binding machine, the first operation section provided on the outer surface of the binding machine body and the second operation section provided on the outer surface of the battery mounting section share the functions, respectively, so that the main board and the first board The number of wires between the operation parts can be reduced. The wiring between the main board and the first operation section must be connected so as to avoid interference with moving parts such as the feeding mechanism, the cutting mechanism, and the twisting mechanism, but the wiring between the main board and the second operation section. Does not need to pass through a place where these movable parts are arranged, and wiring can be easily connected. According to the reinforcing bar binding machine described above, the number of wires that must be connected to avoid interference with moving parts such as the feeding mechanism, the cutting mechanism, and the twisting mechanism without impairing the convenience of the operator is reduced. Assembling workability of the reinforcing bar binding machine can be improved.

It is a perspective view which shows the external appearance of the reinforcing bar binding machine 2 which concerns on an Example. It is a perspective view which shows the internal structure of the binding machine main body 4 of the reinforcing bar binding machine 2 which concerns on an Example. It is sectional drawing which shows the internal structure of the binding machine main body 4 of the reinforcing bar binding machine 2 which concerns on an Example. It is a perspective view which shows the internal structure of the binding machine main body 4 and the grip 6 of the reinforcing bar binding machine 2 which concerns on an Example. It is a perspective view which shows the structure of the main board case 80 and the main board 82 of the reinforcing bar binding machine 2 which concerns on an Example. It is a perspective view which shows the internal structure of the battery attachment part 8 of the reinforcing bar binding machine 2 which concerns on an Example. It is a block diagram which shows the electric system of the reinforcing bar binding machine 2 which concerns on an Example. It is a perspective view showing a situation of wiring which passes along wiring passage part 80c of main board case 80 of rebar binding machine 2 concerning an example. It is a block diagram which shows the modification of the electric system of the reinforcing bar binding machine 2 which concerns on an Example.

  In one or more embodiments, the first operating unit may include a main switch for switching on / off the power source of the reinforcing bar binding machine, and the second operating section sets for switching the operation setting of the reinforcing bar binding machine. Means may be provided. The operation setting mentioned here refers to settings relating to various modes of operation performed by the reinforcing bar binding machine, for example, setting of the wire feed amount and the number of windings by the feed mechanism, and the twisting strength of the wire by the twisting mechanism. Includes settings for the number of sheath twists.

  According to the above configuration, the main switch, which is frequently operated by the operator, is arranged in the first operation section on the outer surface of the binding machine body, and the setting means, which is less frequently operated by the operator, is the outer surface of the battery mounting section. Therefore, it is possible to improve the assembling workability of the reinforcing bar binding machine by reducing the number of wirings between the main board and the first operating portion without impairing the convenience of the operator.

  In one or more embodiments, the first operating portion may be provided on the upper surface of the binding machine body, and the second operating portion may be provided on the upper surface of the battery mounting portion.

  According to the above configuration, since the first operating portion is provided on the upper surface of the binding machine body, the size of the binding machine body in the front-rear direction and the left-right direction can be reduced. Further, according to the above configuration, since the second operation portion is provided on the upper surface of the battery mounting portion, the size of the battery mounting portion in the front-rear direction and the left-right direction can be reduced.

  In one or more embodiments, the main switch may be a momentary type switch.

  If an alternate type switch is used as the main switch, even if the power of the reinforcing bar binding machine is switched from on to off due to a cause other than the operation of the main switch, such as the auto power off function, the main switch will not It is kept in the ON state. Therefore, in order to switch the power source of the reinforcing bar binding machine from OFF to ON thereafter, it is necessary to once switch the main switch from the ON state to the OFF state and then switch the main switch from the OFF state to the ON state again. On the other hand, when the momentary type switch is used as the main switch as in the above configuration, when the power of the reinforcing bar binding machine is switched from on to off due to a cause other than the operation of the main switch, the main switch is It is off. Therefore, when the power source of the reinforcing bar binding machine is switched from OFF to ON after that, only the operation of turning the main switch on is performed as usual. According to the above configuration, when the power of the rebar tying machine is switched from on to off due to a cause other than the operation of the main switch, the operation for switching the power of the rebar tying machine from off to on can be simplified. Can be one.

  In one or more embodiments, the main microcomputer, when the power of the reinforcing bar binding machine is on and the state in which the trigger switch and the setting means are not operated continues for a predetermined time, the reinforcing bar. The binding machine may be turned off.

  According to the above configuration, when the reinforcing bar binding machine remains powered on and the reinforcing bar binding machine is not used for a long time, the reinforcing bar binding machine is automatically turned off even if the main switch is not operated. Can be It is possible to suppress the consumption of the battery and prevent a situation where the reinforcing bar binding machine malfunctions when the worker does not intend to use the reinforcing bar binding machine.

  In one or more embodiments, the first operation unit may be provided with a first informing unit for informing an ON / OFF state of the power source of the reinforcing bar binding machine.

  According to the above configuration, the first notifying unit is arranged in the first operation unit that easily draws the operator's attention, so that the operator can surely recognize the ON / OFF state of the power source of the reinforcing bar binding machine. You can Accordingly, when the operator performs maintenance of the reinforcing bar binding machine such as replacement of the reel for supplying the wire, it is possible to prevent the maintenance work from being mistakenly performed with the power of the reinforcing bar binding machine turned on. The first notification means may be, for example, a display device such as an LED that lights up according to the ON / OFF state of the power source of the reinforcing bar binding machine. Alternatively, the first notification means may be a sound generation device such as a buzzer that notifies the power on / off state of the reinforcing bar binding machine by sound. Alternatively, the first notification means may be integrated with the main switch, and may be a slide switch, a rocker switch, or a dial switch that allows the operator to visually recognize the on / off state of the power supply of the reinforcing bar binding machine. .

  In one or more embodiments, the second operation unit may be provided with a second informing unit for informing the operation setting state of the reinforcing bar binding machine.

  According to the above configuration, the operator can perform the operation of switching the operation setting while confirming the current state of the operation setting of the reinforcing bar binding machine, so that the operator mistakenly switches the content of the operation setting. It is possible to prevent it. The second notification means may be, for example, a display device such as an LED that displays the operation setting state of the reinforcing bar binding machine. Alternatively, the second notifying unit may be integrated with the setting unit, and may be a slide switch, a rocker switch, or an adjustment dial that allows the operator to visually recognize the operation setting state of the reinforcing bar binding machine.

  In one or more embodiments, serial communication may be possible between the main board and the second operation unit.

  According to the above configuration, the number of wires between the main board and the second operation portion can be reduced, and the workability of assembling the reinforcing bar binding machine can be further improved.

  In one or more embodiments, the second operation unit may include a sub-microcomputer capable of executing serial communication with the main microcomputer mounted on the main board.

  According to the above configuration, the amount of data transmitted from the main board to the second operation unit can be reduced by controlling the operation of the second notification unit via the sub-microcomputer.

  In one or more embodiments, the content of notification by the second notification means may be transmitted from the main microcomputer to the sub-microcomputer.

  According to the above configuration, the processing performed by the sub-microcomputer can be simplified.

  In one or more embodiments, the setting means may be connected to the main board via a setting signal line different from the serial communication line used for serial communication.

  According to the above configuration, the input from the setting means is recognized by the main microcomputer, so that the process performed by the sub-microcomputer can be simplified.

  In one or more embodiments, the main board may store operational settings for the rebar tying machine.

  According to the above configuration, since it is not necessary to store the operation setting of the reinforcing bar binding machine in the second operation unit, the configuration of the second operation unit can be simplified.

  In one or more embodiments, the setting means may be connected to the sub-microcomputer.

  According to the above configuration, the number of wires between the second operation section and the main board can be further reduced, and the workability of assembling the reinforcing bar binding machine can be further improved.

  In one or more embodiments, the operation content of the setting means may be transmitted from the sub-microcomputer to the main microcomputer by serial communication, and the operation setting of the reinforcing bar binding machine may be stored in the main board.

  According to the above configuration, since it is not necessary to store the operation setting of the reinforcing bar binding machine in the second operation unit, the configuration of the second operation unit can be simplified.

  In one or more embodiments, the operation setting of the reinforcing bar binding machine stored in the main board may be transmitted from the main microcomputer to the sub-microcomputer by serial communication as the notification content of the second notification means.

  According to the above configuration, the processing performed by the sub-microcomputer can be simplified.

  In one or more embodiments, when the reinforcing bar binding machine has an error, the reinforcing bar binding machine uses the first notifying means and / or the second notifying means that the error has occurred and / or the type of the error. May be notified.

  According to the above configuration, the operator can be notified of the occurrence of an error and the type of error by using the first notifying means and the second notifying means without using a dedicated notifying means for notifying an error. it can.

  In one or more embodiments, on the main board, a wire connecting between the second operation unit and the main board and / or a wire connecting between the battery and the main board and / or between the trigger switch and the main board. There may be formed a notch through which the wiring connecting the wires can pass.

  According to the above configuration, the wiring that connects the second operation unit and the main board, the wiring that connects the battery and the main board, and the wiring that connects the trigger switch and the main board are connected to the main board. Since the cutout can be passed through and the main board can be connected, the workability of assembling the reinforcing bar binding machine can be further improved.

  In one or more embodiments, the wiring that connects between the main board and the first operation unit may be a communication line that communicates signals.

  In general, a communication line that communicates a signal can use a narrower wire than a power line that supplies power from a battery to a motor or an actuator. According to the above configuration, it is necessary to use thick wiring for the wiring between the main board and the first operation unit, which must be connected so as to avoid interference with moving parts such as the feeding mechanism, the cutting mechanism, and the twisting mechanism. Therefore, the workability of assembling the reinforcing bar binding machine can be further improved.

(Example)
A reinforcing bar binding machine 2 according to an embodiment will be described with reference to the drawings. The reinforcing bar binding machine 2 shown in FIG. 1 is an electric tool for binding a plurality of reinforcing bars R with wires W.

  The reinforcing bar binding machine 2 includes a binding machine body 4, a grip 6 provided at a lower portion of the binding machine body 4, and a battery mounting portion 8 provided at a lower portion of the grip 6. The battery B is detachably attached to the lower portion of the battery attachment portion 8. The binding machine body 4, the grip 6, and the battery mounting portion 8 are integrally formed.

  As shown in FIG. 2, the reel 10 around which the wire W is wound is detachably accommodated in the upper rear part of the binding machine body 4. It should be noted that in FIG. 2, the wiring inside the reinforcing bar binding machine 2 is omitted for clarity. The binding machine body 4 mainly includes a feed mechanism 12, a guide mechanism 14, a brake mechanism 16, a cutting mechanism 18 (see FIGS. 3 and 4), and a twisting mechanism 20.

  The feed mechanism 12 feeds the wire W supplied from the reel 10 to the guide mechanism 14 in front of the binding machine body 4. The feeding mechanism 12 includes a feeding motor 22, a driving roller 24, and a driven roller 26. The wire W is sandwiched between the driving roller 24 and the driven roller 26. The feed motor 22 rotates the driving roller 24. When the feed motor 22 rotates the driving roller 24, the driven roller 26 rotates in the opposite direction, and the wire W sandwiched between the driving roller 24 and the driven roller 26 is fed to the guide mechanism 14, and the wire W is reeled from the reel 10. Is withdrawn.

  The guide mechanism 14 guides the wire W fed from the feed mechanism 12 around the rebar R in an annular shape. The guide mechanism 14 includes a guide pipe 28, an upper curl guide 30, and a lower curl guide 32. The rear end of the guide pipe 28 is open toward the space between the main driving roller 24 and the driven roller 26. The wire W sent from the sending mechanism 12 is sent into the inside of the guide pipe 28. The front end of the guide pipe 28 opens toward the inside of the upper curl guide 30. The upper curl guide 30 is provided with a first guide passage 34 for guiding the wire W fed from the guide pipe 28 and a second guide passage 36 for guiding the wire W fed from the lower curl guide 32. ing.

  As shown in FIG. 3, in the first guide passage 34, a plurality of guide pins 38 that guide the wire W so that the wire W is wound downward and a cutter that constitutes a part of the cutting mechanism 18 described later. 40 is provided. It should be noted that in FIG. 3, the wiring inside the reinforcing bar binding machine 2 is omitted for clarity. The wire W sent from the guide pipe 28 is guided by the guide pin 38 in the first guide passage 34, passes through the cutter 40, and is sent out from the front end of the upper curl guide 30 to the lower curl guide 32.

  The lower curl guide 32 is provided with a return plate 42. The sending-back plate 42 guides the wire W sent from the front end of the upper curl guide 30 and sends it back toward the rear end of the second guide passage 36 of the upper curl guide 30.

  As shown in FIG. 4, the wire W sent from the lower curl guide 32 is guided through the second guide passage 36 of the upper curl guide 30 so as to be directed from the front end of the upper curl guide 30 to the lower curl guide 32. A guide wall 44 is provided for sending. It should be noted that in FIG. 4, a part of the wiring inside the reinforcing bar binding machine 2 is omitted for the sake of clarity.

  The wire W fed from the feeding mechanism 12 is wound around the reinforcing bar R in an annular shape by the upper curl guide 30 and the lower curl guide 32. The number of turns of the wire W around the reinforcing bar R can be preset by the operator. When the feed mechanism 12 feeds out the wire W having a length corresponding to the set number of turns, the feed mechanism 22 stops the feed motor 22 to stop the feed of the wire W.

  The brake mechanism 16 shown in FIG. 2 stops the rotation of the reel 10 in conjunction with the feeding mechanism 12 stopping the feeding of the wire W. The brake mechanism 16 includes a solenoid 46, a link 48, and a brake arm 50. Engaging portions 10a with which the brake arms 50 are engaged are formed on the reel 10 in the radial direction at predetermined angular intervals. When the solenoid 46 is not energized, the brake arm 50 is separated from the engaging portion 10 a of the reel 10. When the solenoid 46 is energized, the link 48 causes the brake arm 50 to engage with the engaging portion 10 a of the reel 10. When the feed mechanism 12 feeds out the wire W, the brake mechanism 16 does not energize the solenoid 46, but separates the brake arm 50 from the engaging portion 10 a of the reel 10. As a result, the reel 10 can freely rotate, and the feeding mechanism 12 can pull out the wire W from the reel 10. When the feed mechanism 12 stops feeding the wire W, the brake mechanism 16 energizes the solenoid 46 to engage the brake arm 50 with the engaging portion 10 a of the reel 10. As a result, the rotation of the reel 10 is prohibited. Accordingly, even after the feeding mechanism 12 stops feeding the wire W, it is possible to prevent the reel 10 from continuing to rotate due to inertia and the wire W from being loosened between the reel 10 and the feeding mechanism 12.

  The cutting mechanism 18 shown in FIG. 3 cuts the wire W while the wire W is wound around the reinforcing bar R. The cutting mechanism 18 includes a cutter 40 and a link 52. The link 52 interlocks with the twisting mechanism 20 described later to rotate the cutter 40. As the cutter 40 rotates, the wire W passing through the inside of the cutter 40 is cut.

  The twisting mechanism 20 shown in FIG. 4 binds the reinforcing bar R with the wire W by twisting the wire W wound around the reinforcing bar R. The twisting mechanism 20 includes a twisting motor 54, a speed reduction mechanism 56, a screw shaft 58 (see FIG. 3), a sleeve 60, and a pair of hooks 62.

  The rotation of the torsion motor 54 is transmitted to the screw shaft 58 via the reduction mechanism 56. The torsion motor 54 can rotate in forward and reverse directions, and the screw shaft 58 accordingly can also rotate in forward and reverse directions. The sleeve 60 is arranged so as to cover the periphery of the screw shaft 58. In a state where the rotation of the sleeve 60 is prohibited, when the screw shaft 58 rotates in the forward direction, the sleeve 60 moves forward, and when the screw shaft 58 rotates in the reverse direction, the sleeve 60 moves backward. To do. When the screw shaft 58 rotates while the sleeve 60 is allowed to rotate, the sleeve 60 rotates together with the screw shaft 58. Further, when the sleeve 60 advances from the initial position to a predetermined position, the link 52 of the cutting mechanism 18 rotates the cutter 40. The pair of hooks 62 are provided at the front end of the sleeve 60, and open and close according to the position of the sleeve 60 in the front-rear direction. When the sleeve 60 moves forward, the pair of hooks 62 closes and holds the wire W. On the contrary, when the sleeve 60 moves rearward, the pair of hooks 62 are opened to release the wire W.

  The twisting mechanism 20 rotates the twisting motor 54 in a state where the wire W is wound around the reinforcing bar R. At this time, the rotation of the sleeve 60 is prohibited, and the rotation of the screw shaft 58 causes the sleeve 60 to move forward and the pair of hooks 62 to move forward to close the pair of hooks 62 to grip the wire W. When the rotation of the sleeve 60 is allowed, the rotation of the screw shaft 58 rotates the sleeve 60 and the pair of hooks 62. Thereby, the wire W is twisted and the reinforcing bars R are bound. The twisting strength of the wire W can be preset by the operator. The twisting mechanism 20 rotates the twisting motor 54 in the opposite direction when twisting the wire W to the set twisting strength. At this time, the rotation of the sleeve 60 is prohibited, and after the pair of hooks 62 are opened and the wire W is released, the sleeve 60 is retracted by the rotation of the screw shaft 58 and the pair of hooks 62 is retracted, and the initial position When the pair of hooks 62 retracts to, the pair of hooks 62 returns to the initial angle.

  As shown in FIGS. 2 and 4, a first operation portion 64 is provided on the upper surface of the binding machine body 4. The first operation portion 64 is arranged in front of the reel 10 and behind the feed motor 22, and is provided above the torsion motor 54. The first operation unit 64 is provided with a first operation display plate 70 having a push button 66 and a display window 68. A first operation board 72 is arranged immediately below the first operation display plate 70. As shown in FIG. 7, the first operation board 72 is provided with a main switch 74 for detecting ON / OFF of the push button 66, a main power LED 76 for turning on / off the display window 68, and a buzzer 78. . The main switch 74 is normally off, and is turned on when the push button 66 is pressed by an operator, and is a momentary type switch, not an alternate type switch. The momentary type switch referred to in the present specification means a switch that is turned on only while an operator is operating it, and turns off when the operator releases his / her hand, and, for example, a tactile switch. And so on. The alternate type switch referred to in the present specification means a switch which is turned on by an operator operating the switch and which holds the on state even if the operator releases the hand after the operation, for example, Examples include slide switches and rocker switches.

  As shown in FIG. 4, a main board case 80 is accommodated in the lower inside of the binding machine body 4. As shown in FIG. 5, a main board 82 is housed inside the main board case 80. The main board 82 is formed in a substantially rectangular shape having a longitudinal direction in the front-back direction of the binding machine body 4, and has a substantially square cutout 82a on a side portion. The main board case 80 includes a bottom plate 80 a and a wall plate 80 b extending from the bottom plate 80 a along the outer shape of the main board 82. A wiring passage portion 80c is formed in a portion of the main substrate case 80 corresponding to the cutout 82a of the main substrate 82. A wiring hook 80d extending from the wall plate 80b is formed outside the wiring passage portion 80c.

  As shown in FIG. 4, a trigger 84 that can be pulled by an operator is provided on the front upper portion of the grip 6. Inside the grip 6, a trigger switch 86 for detecting ON / OFF of the trigger 84 is provided. When the operator pulls the trigger 84 to turn on the trigger switch 86, the reinforcing bar binding machine 2 winds the wire W around the reinforcing bar R by the feed mechanism 12, the guide mechanism 14 and the brake mechanism 16. The cutting mechanism 18 and the twisting mechanism 20 cut the wire W and twist the wire W wound around the reinforcing bar R to perform a series of operations.

  As shown in FIG. 6, a battery terminal 88 to which the battery B can be attached / detached is provided in the lower portion of the battery attachment portion 8. A second operation portion 90 is provided on the front upper surface of the battery attachment portion 8. The second operation unit 90 includes display windows 92 and 94, a 7-segment display window 96, and a second operation display plate 102 including setting buttons 98 and 100. A second operation board 104 is provided immediately below the second operation display plate 102. As shown in FIG. 7, the second operation board 104 includes LEDs 106 and 108 for turning on and off the display windows 92 and 94, a 7-segment LED 110 for performing 7-segment display on the 7-segment display window 96, and an LED 106. A sub-microcomputer 112 that controls the operations of the 108 and 7-segment LEDs 110 and setting switches 114 and 116 that detect ON / OFF of the setting buttons 98 and 100 are provided. The setting switches 114 and 116 are momentary type switches that are normally off, and are turned on when the operator presses the setting buttons 98 and 100.

  FIG. 7 is a block diagram showing an electric system of the reinforcing bar binding machine 2. The main substrate 82 is provided with a latch relay 118, a regulator 120, a transistor 160, a main microcomputer 122, and drivers 124, 126, 128.

  The latch relay 118 includes a FET 130, resistors 132 and 134, and a transistor 136. The FET 130 is provided between the power supply potential line of the battery B and the power supply potential line of the regulator 120. When the FET 130 is turned on, power is supplied from the battery B to the regulator 120. In this specification, a state in which power is being supplied from the battery B to the regulator 120 is referred to as a state in which the power of the reinforcing bar binding machine 2 is on. When the FET 130 is turned off, the power supply from the battery B to the regulator 120 is cut off. In this specification, a state in which power is not being supplied from the battery B to the regulator 120 is referred to as a state in which the power of the reinforcing bar binding machine 2 is off. The control input of the FET 130 is connected to the power supply potential line of the battery B via the resistor 132. Further, the control input of the FET 130 is connected to the ground potential via the resistor 134 and the main switch 74. Further, the control input of FET 130 is connected to ground potential via resistor 134 and transistor 136. Switching on / off of the transistor 136 is performed by the main microcomputer 122.

  The transistor 160 is provided to detect ON / OFF of the main switch 74. When the main switch 74 is turned on, the transistor 160 outputs an on signal to the main microcomputer 122. When the main switch 74 is turned off, the transistor 160 outputs an off signal to the main microcomputer 122. The main microcomputer 122 can recognize the on / off state of the main switch 74 based on the signal output from the transistor 160.

  When the FET 130 is off (that is, the power source of the reinforcing bar binding machine 2 is off) and the main switch 74 of the first operation board 72 is switched from off to on, the FET 130 is switched to on. As a result, power is supplied from the battery B to the regulator 120, and the power of the reinforcing bar binding machine 2 is turned on. When power is supplied to the regulator 120, the main microcomputer 122 is activated, and the main microcomputer 122 recognizes that the main switch 74 is pressed by the ON signal from the transistor 160. In this case, the main microcomputer 122 switches on the transistor 136. In this state, even if the main switch 74 is switched from ON to OFF, the control input of the FET 130 is connected to the ground potential by the transistor 136, so that the FET 130 maintains the ON state and the power of the reinforcing bar binding machine 2 is turned ON. Maintained as is. Therefore, even when a momentary type switch is used as the main switch 74, the power of the reinforcing bar binding machine 2 can be kept on.

  Further, when the FET 130 is in the ON state (that is, the power source of the reinforcing bar binding machine 2 is in the ON state), when the main switch 74 of the first operation board 72 is switched from OFF to ON, the main microcomputer 122 causes the main microcomputer 122 to output an ON signal from the transistor 160. By recognizing that the main switch 74 is being pressed, the transistor 136 is turned off. As a result, the FET 130 is switched to the off state, the power supply from the battery B to the regulator 120 is cut off, and the power of the reinforcing bar binding machine 2 is turned off. In this state, even if the main switch 74 is switched from on to off, the FET 130 remains off, and the power of the reinforcing bar binding machine 2 remains off.

  According to the reinforcing bar binding machine 2 of the present embodiment, the power of the reinforcing bar binding machine 2 is switched on / off by a simple combination of the main switch 74 using a momentary type switch, the latch relay 118, and the main microcomputer 122. It can be easily realized.

  Further, when the FET 130 is on (that is, the power of the reinforcing bar binding machine 2 is on), the main microcomputer 122 operates the main switch 74 when the main microcomputer 122 attempts to turn off the power of the reinforcing bar binding machine 2 at an arbitrary timing. Even if not performed, the FET 130 is switched to the off state by the main microcomputer 122 switching the transistor 136 to the off state. As a result, even if the main switch 74 is not operated, the power supply from the battery B to the regulator 120 can be shut off and the power of the reinforcing bar binding machine 2 can be turned off. In the rebar tying machine 2 of the present embodiment, the main microcomputer 122 operates the first operation unit 64, the second operation unit 90, and the trigger 84 by the operator while power is being supplied from the battery B. When the state in which the operation is not performed continues for a predetermined time (for example, 3 minutes), the transistor 136 is turned off and the power of the reinforcing bar binding machine 2 is turned off. Thereby, the auto power off function can be realized. It is possible to suppress the consumption of the battery B and prevent a situation where the reinforcing bar binding machine 2 malfunctions when an operator does not intend to use the reinforcing bar binding machine 2.

  If an alternate type switch is used as the main switch 74, when the power of the reinforcing bar binding machine 2 is switched from on to off due to a cause other than the operation of the main switch 74, such as the auto power off function described above. However, the main switch 74 is held in the ON state. Therefore, in order to switch the power source of the reinforcing bar binding machine 2 from OFF to ON thereafter, it is necessary to switch the main switch 74 from the ON state to the OFF state once and then switch the main switch 74 from the OFF state to the ON state again. Becomes On the other hand, when the momentary type switch is used as the main switch 74 as in the reinforcing bar binding machine 2 of the present embodiment, the power of the reinforcing bar binding machine 2 is switched from on to off due to a cause other than the operation of the main switch 74. When it is switched, the main switch 74 is in the off state. Therefore, when the power source of the reinforcing bar binding machine 2 is switched from off to on after that, only the operation of turning on the main switch 74 may be performed as usual. According to the reinforcing bar binding machine 2 of the present embodiment, when the power of the reinforcing bar binding machine 2 is switched from on to off due to a cause other than the operation of the main switch 74, the power of the reinforcing bar binding machine 2 is switched from off to on. The operation for switching to can be simplified.

  The regulator 120 adjusts the electric power supplied from the battery B to a predetermined voltage and supplies it to the main microcomputer 122.

  The driver 124 is a driver circuit that drives the torsion motor 54. The main microcomputer 122 can control the operation of the torsion motor 54 via the driver 124.

  The driver 126 is a driver circuit that drives the feed motor 22. The main microcomputer 122 can control the operation of the feed motor 22 via the driver 126.

  The driver 128 is a driver circuit that drives the solenoid 46. The main microcomputer 122 can control the operation of the solenoid 46 via the driver 128.

  The main power LED 76 of the first operation board 72 is connected to the main microcomputer 122. The main microcomputer 122 lights the main power supply LED 76 when the power of the reinforcing bar binding machine 2 is on, that is, when the power is being supplied from the battery B to the regulator 120. When the power of the reinforcing bar binding machine 2 is off, that is, when the power supply from the battery B to the regulator 120 is not performed, the main microcomputer 122 does not operate, and the main power supply LED 76 is turned off.

  The buzzer 78 of the first operation board 72 is connected to the main microcomputer 122. For example, when the main microcomputer 122 uses up the wire W wound around the reel 10 and detects that the wire W has become empty, the main microcomputer 122 uses the buzzer 78 and the main power LED 76 to allow the worker to replace the reel 10. Notify the timing. Further, when the main microcomputer 122 detects an error state such as the wire W being entangled with the twisting mechanism 20, the main buzzer 78 and the main power supply LED 76 inform the operator of the occurrence of the error and the type of the error. . Further, when the worker tries to perform maintenance on the reinforcing bar binding machine 2 while the reinforcing bar binding machine 2 is powered on, the main microcomputer 122 causes the buzzer 78 to turn on the reinforcing bar binding machine 2 to the operator. Notify that it is in a state. As a result, it is possible to prevent an operator from performing maintenance by mistake while the power of the reinforcing bar binding machine 2 is turned on. Note that whether or not the worker is going to perform maintenance of the reinforcing bar binding machine 2 may be determined based on a detection signal from the sensor, for example, by providing a sensor that monitors the mounting state of the reel 10. It is also possible to provide a sensor for monitoring the open / closed state of the lower curl guide 32 and make a determination based on a detection signal from the sensor.

  The trigger switch 86 is connected to the main microcomputer 122 via a trigger signal line. The main microcomputer 122 recognizes whether the trigger switch 86 is on or off. When the trigger switch 86 is switched from OFF to ON, the main microcomputer 122 controls the operation of the feed motor 22 and the solenoid 46 to perform the operation of winding the wire W around the reinforcing bar R, and also the torsion motor 54. Is controlled to cut the wire W and twist the wire W wound around the reinforcing bar R.

  The setting switches 114 and 116 of the second operation board 104 are connected to the main microcomputer 122 via setting signal lines. The operator operates the setting switches 114 and 116 to control the amount of wire W or the number of windings of the wire W by the feeding mechanism 12 and the twisting strength or the number of twists of the wire W by the twisting mechanism 20. Operation settings can be switched. In this embodiment, the setting switch 114 is for setting the number of windings of the wire W, and the setting switch 116 is for setting the torsional strength of the wire W. The main microcomputer 122 includes a flash memory (not shown) that stores the content of the operation setting of the reinforcing bar binding machine 2. The main microcomputer 122 recognizes ON / OFF of each of the setting switches 114 and 116. When one of the setting switches 114 and 116 is turned on, the main microcomputer 122 reads the contents of the operation setting associated with the setting switches 114 and 116 from the flash memory and operates according to the operation of the setting switches 114 and 116. Switch the setting contents. Then, the main microcomputer 122 newly stores the changed operation setting content in the flash memory. The main microcomputer 122 may store the changed operation setting content in an EEPROM outside the main microcomputer 122.

  The sub-microcomputer 112 of the second operation board 104 is connected to the main board 82 via a serial communication line. The main microcomputer 122 and the sub-microcomputer 112 can perform bidirectional communication by serial communication via UART, for example. The communication with the sub-microcomputer 112 may be performed by a microcomputer mounted on the main board 82, which is different from the main microcomputer 122 that controls the feed motor 22, the solenoid 46, and the torsion motor 54.

  The LEDs 106 and 108 and the 7-segment LED 110 of the second operation board 104 are connected to the sub-microcomputer 112. The main microcomputer 122 instructs the sub-microcomputer 112 what to display on the LEDs 106, 108 and the 7-segment LED 110. In the reinforcing bar binding machine 2 of the present embodiment, when the operator operates the setting switches 114 and 116, the main microcomputer 122 displays the contents of the operation settings changed by the operation on the LEDs 106, 108 and the 7-segment LED 110. Then, the sub-microcomputer 112 is instructed. The sub-microcomputer 112 controls the operations of the LEDs 106, 108 and the 7-segment LED 110 according to an instruction from the main microcomputer 122. On the LEDs 106, 108 and the 7-segment LED 110, the contents of the current operation settings of the reinforcing bar binding machine 2 set by operating the setting switches 114, 116 are displayed. Further, when the main microcomputer 122 detects an error state such as the wire W being entangled with the twisting mechanism 20, the LEDs 106, 108 and the 7-segment LED 110 indicate that an error has occurred to the operator and the type of error. Notify me.

  The battery terminal 88 and the main board 82 are connected by three wirings 140, which are a power supply potential line, a ground potential line, and a battery monitoring signal line. Note that in FIG. 7, only the power supply potential line and the ground potential line are shown among these wirings 140 for the sake of clarity. As shown in FIGS. 4 and 6, these wirings 140 pass from the battery terminals 88 at the lower portion of the battery mounting portion 8 through the inside of the grip 6 and are connected to the main board 82 at the lower portion of the binding machine body 4. ing.

  Between the second operation board 104 and the main board 82, one power supply potential line, one ground potential line, two serial communication lines, and two setting signal lines, a total of six wiring lines. They are connected by 142. Note that in FIG. 7, the power supply potential line and the ground potential line are not shown in these wirings 142 and two serial communication lines are shown as one for the sake of clarity. As shown in FIGS. 4 and 6, these wirings 142 pass through the inside of the grip 6 from the second operation board 104 housed in the battery mounting portion 8 and then the main board 82 below the binding machine body 4. It is connected to the.

  The trigger switch 86 and the main board 82 are connected by a wiring 138 composed of two trigger signal lines. Note that, in FIG. 7, one of these wirings 138 is illustrated for the sake of clarity. As shown in FIG. 4, these wirings 138 pass through the inside of the grip 6 from the trigger switch 86 housed in the upper portion of the grip 6 and are connected to the main board 82 below the binding machine body 4. .

  As described above, the wirings 138, 140, 142 are connected to the main board 82 from the trigger switch 86 provided on the grip 6, the battery terminal 88 provided on the battery mounting portion 8 and the second operation board 104. It As shown in FIG. 8, the wiring 138 extending from the trigger switch 86, the wiring 140 extending from the battery terminal 88, and the wiring 142 extending from the second operation board 104 pass through the inside of the grip 6 and are connected to the main board case 80. It passes through the provided wiring passage portion 80c and is connected to the upper surface of the main substrate 82. In this way, the notch 82a is formed in the main board 82, and the space is used as the wiring passage portion 80c, so that the grip 6 and the battery mounting portion 8 below the binding machine body 4 are connected to the main board 82. The wirings 138, 140, 142 can be easily handled. Further, by forming the wiring hook 80d on the outside of the wiring passage portion 80c of the main board case 80, the wirings passing through the wiring passage portion 80c can be gathered together.

  In the reinforcing bar binding machine 2 of the present embodiment, the first operation section 64 provided on the outer surface of the binding machine body 4 and the second operation section 90 provided on the outer surface of the battery mounting section 8 are caused to share the respective functions. Thus, the number of wirings 150 (see FIG. 4) between the main board 82 and the first operation unit 64 can be reduced. The wiring 150 between the main board 82 and the first operating portion 64 must be connected so as to avoid interference with moving parts such as the feed mechanism 12, the brake mechanism 16, the cutting mechanism 18, and the twisting mechanism 20. The wiring 142 between the substrate 82 and the second operation unit 90 does not need to pass through the place where these movable parts are arranged, and the wiring can be easily connected. According to the reinforcing bar binding machine 2 of the present embodiment, the reinforcing bar binding machine 2 is connected so as to avoid interference with movable parts such as the feed mechanism 12, the brake mechanism 16, the cutting mechanism 18, and the twisting mechanism 20 without impairing the convenience of the operator. It is possible to improve the assembling workability of the reinforcing bar binding machine 2 by reducing the number of wires that must be provided.

  According to the reinforcing bar binding machine 2 of the present embodiment, the main switch 74, which is frequently operated by the operator, is arranged on the first operation portion 64 on the outer surface of the binding machine body 4, and the setting is performed by the operator at low frequency. Since the switches 114 and 116 are arranged on the outer surface of the battery mounting portion 8, the number of wires 150 between the main board 82 and the first operating portion 64 can be reduced without impairing the convenience of the operator, and the reinforcing bar Assembling workability of the binding machine 2 can be improved.

  In the reinforcing bar binding machine 2 of the present embodiment, since the first operation portion 64 is provided on the upper surface of the binding machine body 4, the size of the binding machine body 4 in the front-rear direction and the left-right direction can be reduced. Further, in the reinforcing bar binding machine 2 of the present embodiment, since the second operating portion 90 is provided on the upper surface of the battery mounting portion 8, the size of the battery mounting portion 8 in the front-rear direction and the left-right direction can be reduced.

  In the reinforcing bar binding machine 2 of the present embodiment, since the main power supply LED 76 and the buzzer 78 are arranged on the first operation portion 64 on the upper surface of the binding machine body 4 that easily attracts the operator's attention, It is possible to make the operator surely recognize the on / off state. Thus, when the worker performs maintenance of the reinforcing bar binding machine 2 such as replacement of the reel 10 for supplying the wire W, it is possible to prevent accidental maintenance with the power of the reinforcing bar binding machine 2 turned on. You can

  In the reinforcing bar binding machine 2 of the present embodiment, LEDs 106, 108 and a 7-segment LED 110 for displaying the contents of the operation setting are provided on the second operation unit 90 including the setting switches 114, 116. Since the operator can perform the operation of switching the operation setting while confirming the current operation setting state of the reinforcing bar binding machine 2, it is possible to prevent the operator from accidentally switching the content of the operation setting. it can.

  In the reinforcing bar binding machine 2 of the present embodiment, serial communication can be executed between the main board 82 and the second operation unit 90. Thereby, the number of wirings 142 between the main board 82 and the second operating section 90 can be reduced, and the workability of assembling the reinforcing bar binding machine 2 can be further improved.

  In the reinforcing bar binding machine 2 of the present embodiment, the second operation section 90 includes the sub-microcomputer 112 capable of executing serial communication with the main microcomputer 122 mounted on the main board 82, and the LEDs 106, 108 and 7 are provided. The operation of the segment LED 110 is controlled by the sub-microcomputer 112. As a result, the amount of data transmitted from the main microcomputer 122 to the second operation unit 90 can be reduced. Further, in the reinforcing bar binding machine 2 of the present embodiment, the display contents of the LEDs 106, 108 and the 7-segment LED 110 are transmitted from the main microcomputer 122 to the sub-microcomputer 112. As a result, the processing performed by the sub-microcomputer 112 can be simplified. In addition, in the reinforcing bar binding machine 2 of the present embodiment, the setting switches 114 and 116 are connected to the main microcomputer 122 via the setting signal line. With such a configuration, the main microcomputer 122 recognizes the inputs from the setting switches 114 and 116, so that the process performed by the sub-microcomputer 112 can be simplified.

  In the reinforcing bar binding machine 2 of the present embodiment, the display contents of the LEDs 106, 108 and the 7-segment LED 110 of the second operation board 104 are transmitted from the main board 82 to the second operation board 104 by serial communication. The number of wirings 142 between the main board 82 and the second operation board 104 is smaller than that in the configuration in which the display contents of the LEDs 106, 108 and the 7-segment LED 110 are transmitted from the main board 82 to the second operation board 104 by parallel communication. can do. When the main board 82 is housed in the binding machine body 4 and the second operation board 104 is housed in the battery mounting portion 8 as in the present embodiment, the main board 82 passes through the grip 6 and the binding machine body 4 moves. The number of wires that need to be routed inside can be reduced.

  In the second operation board 104, an IC capable of serial communication is mounted instead of the sub-microcomputer 112, and the LEDs 106 and 108 and the 7-segment LED 110 are connected to the main microcomputer 122 via the IC capable of serial communication. It may be configured as follows. Also in this case, the display contents of the LEDs 106, 108 and the 7-segment LED 110 can be transmitted from the main board 82 to the second operation board 104 by serial communication. Also in this case, the wiring 142 between the main board 82 and the second operation board 104 is different from the configuration in which the display contents of the LEDs 106, 108 and the 7-segment LED 110 are transmitted from the main board 82 to the second operation board 104 by parallel communication. The number of can be reduced.

  As shown in FIG. 9, the setting switches 114 and 116 on the second operation board 104 may be connected to the sub-microcomputer 112. In this case, the sub-microcomputer 112 recognizes ON / OFF of the setting switches 114 and 116, and the sub-microcomputer 112 transmits the ON / OFF state of the setting switches 114 and 116 to the main microcomputer 122 by serial communication. When any of the setting switches 114 and 116 is turned on, the main microcomputer 122 reads out the contents of the operation setting associated with the setting switches 114 and 116 from the flash memory, and in response to the operation of the setting switches 114 and 116. Switch the operation settings. Then, the main microcomputer 122 newly stores the changed operation setting content in the flash memory. Further, the main microcomputer 122 instructs the sub-microcomputer 112 to display the changed operation setting contents on the LEDs 106, 108 and the 7-segment LED 110. The sub-microcomputer 112 controls the operations of the LEDs 106, 108 and the 7-segment LED 110 according to an instruction from the main microcomputer 122. On the LEDs 106, 108 and the 7-segment LED 110, the contents of the current operation settings of the reinforcing bar binding machine 2 set by operating the setting switches 114, 116 are displayed. With such a configuration, the number of wirings 142 between the main board 82 and the second operation board 104 can be further reduced.

  Specific examples of the present invention have been described above in detail, but these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes of the specific examples illustrated above. The technical elements described in the present specification or the drawings exert technical utility alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technique illustrated in the present specification or the drawings can simultaneously achieve a plurality of objects, and achieving the one object among them has technical utility.

2: Reinforcing bar binding machine 4: Binding machine body 6: Grip 8: Battery mounting part 10: Reel 10a: Engaging part 12: Feed mechanism 14: Guide mechanism 16: Brake mechanism 18: Cutting mechanism 20: Twisting mechanism 22: Feed motor 24: driving roller 26: driven roller 28: guide pipe 30: upper curl guide 32: lower curl guide 34: first guide passage 36: second guide passage 38: guide pin 40: cutter 42: return plate 44: guide wall 46: Solenoid 48: Link 50: Brake arm 52: Link 54: Motor 56: Reduction mechanism 58: Screw shaft 60: Sleeve 62: A pair of hooks 64: First operation part 66: Push button 68: Display window 70: First Operation display board 72: First operation board 74: Main switch 76: Main power LED
78: Buzzer 80: Main board case 80a: Bottom plate 80b: Wall plate 80c: Wiring passage part 80d: Wiring hook 82: Main board 82a: Notch 84: Trigger 86: Trigger switch 88: Battery terminal 90: Second operation part 92 : Display window 94: Display window 96: 7-segment display window 98: Setting button 100: Setting button 102: Second operation display board 104: Second operation board 106: LED
108: LED
110: 7 segment LED
112: Sub-microcomputer 114: Setting switch 116: Setting switch 118: Latch relay 120: Regulator 122: Main microcomputer 124: Driver 126: Driver 128: Driver 130: FET
132: Resistor 134: Resistor 136: Transistor 138: Wiring 140: Wiring 142: Wiring 150: Wiring 160: Transistor

Claims (13)

A reinforcing bar binding machine for binding a plurality of reinforcing bars with wires,
With the binding machine body,
A grip provided at the bottom of the binding machine body,
It is provided with a battery mounting portion provided at the bottom of the grip,
A battery can be attached to and detached from the lower portion of the battery mounting portion,
The binding machine body is
A feed mechanism that feeds the wire by rotation of a feed motor,
A guide mechanism that guides the wire sent from the feed mechanism around the plurality of reinforcing bars,
A cutting mechanism for cutting the wire sent from the feeding mechanism,
A twisting mechanism for twisting the wire around the plurality of reinforcing bars by rotation of a twisting motor,
A first operation portion provided on the outer surface of the binding machine body;
The main board is housed in the lower inside of the binding machine body, and includes a main board on which a main microcomputer that controls the operations of the feed motor and the torsion motor is mounted.
The grip includes a trigger switch for instructing the reinforcing bar binding machine to perform an operation,
The battery mounting portion includes a second operation portion provided on an outer surface of the battery mounting portion,
The first operation unit, the trigger switch, and the second operation unit are respectively connected to the main board via wiring,
The first operation unit includes a main switch for switching on / off a power source of the reinforcing bar binding machine,
The second operation unit includes a setting unit that switches operation settings of the reinforcing bar binding machine,
A reinforcing bar binding machine in which the main switch is a momentary type switch.   The main microcomputer, when the power supply of the reinforcing bar binding machine is on, and when the state in which the trigger switch and the setting means are not operated continues for a predetermined time, turn off the power supply of the reinforcing bar binding machine, The reinforcing bar binding machine according to claim 1. A reinforcing bar binding machine for binding a plurality of reinforcing bars with wires,
With the binding machine body,
A grip provided at the bottom of the binding machine body,
It is provided with a battery mounting portion provided at the bottom of the grip,
A battery can be attached to and detached from the lower portion of the battery mounting portion,
The binding machine body is
A feed mechanism that feeds the wire by rotation of a feed motor,
A guide mechanism that guides the wire sent from the feed mechanism around the plurality of reinforcing bars,
A cutting mechanism for cutting the wire sent from the feeding mechanism,
A twisting mechanism for twisting the wire around the plurality of reinforcing bars by rotation of a twisting motor,
A first operation portion provided on the outer surface of the binding machine body;
The main board is housed in the lower inside of the binding machine body, and includes a main board on which a main microcomputer that controls the operations of the feed motor and the torsion motor is mounted.
The grip includes a trigger switch for instructing the reinforcing bar binding machine to perform an operation,
The battery mounting portion includes a second operation portion provided on an outer surface of the battery mounting portion,
The first operation unit, the trigger switch, and the second operation unit are respectively connected to the main board via wiring,
The first operation unit includes a main switch for switching on / off a power source of the reinforcing bar binding machine,
The second operation unit includes a setting unit that switches operation settings of the reinforcing bar binding machine,
The second operation unit is provided with a second informing unit for informing a state of operation setting of the reinforcing bar binding machine,
A reinforcing bar binding machine capable of performing serial communication between the main board and the second operation unit.   The reinforcing bar binding machine according to claim 3, wherein the second operation unit includes a sub-microcomputer capable of performing the serial communication with the main microcomputer mounted on the main board.   The reinforcing bar binding machine according to claim 4, wherein the content of the notification by the second notification means is transmitted from the main microcomputer to the sub-microcomputer.   The reinforcing bar binding machine according to claim 5, wherein the setting means is connected to the main board via a setting signal line different from a serial communication line used for the serial communication.   The reinforcing bar binding machine according to claim 6, wherein operation settings of the reinforcing bar binding machine are stored in the main board.   The reinforcing bar binding machine according to claim 5, wherein the setting means is connected to the sub-microcomputer. The operation content of the setting means is transmitted from the sub-microcomputer to the main microcomputer by the serial communication,
The reinforcing bar binding machine according to claim 8, wherein operation settings of the reinforcing bar binding machine are stored in the main board.   10. The operation setting of the reinforcing bar binding machine stored in the main board is transmitted by the serial communication from the main microcomputer to the sub-microcomputer as the content of notification by the second notification means. The rebar tying machine of item 1.   The reinforcing bar binding machine according to any one of claims 3 to 10, wherein, when an error occurs in the reinforcing bar binding machine, the second notification means notifies that the error has occurred and / or the type of the error. . Wiring connecting between the second operating unit and the main board and / or connecting between the battery and the main board and / or connecting between the trigger switch and the main board to the main board. 4. A notch through which the wiring can pass is formed.
11. The reinforcing bar binding machine according to any one of 1 to 11. A reinforcing bar binding machine for binding a plurality of reinforcing bars with wires,
With the binding machine body,
A grip provided at the bottom of the binding machine body,
It is provided with a battery mounting portion provided at the bottom of the grip,
A battery can be attached to and detached from the lower portion of the battery mounting portion,
The binding machine body is
A feed mechanism that feeds the wire by rotation of a feed motor,
A guide mechanism that guides the wire sent from the feed mechanism around the plurality of reinforcing bars,
A cutting mechanism for cutting the wire sent from the feeding mechanism,
A twisting mechanism for twisting the wire around the plurality of reinforcing bars by rotation of a twisting motor,
A first operation portion provided on the outer surface of the binding machine body;
The main board is housed in the lower inside of the binding machine body, and includes a main board on which a main microcomputer that controls the operations of the feed motor and the torsion motor is mounted.
The grip includes a trigger switch for instructing the reinforcing bar binding machine to perform an operation,
The battery mounting portion includes a second operation portion provided on an outer surface of the battery mounting portion,
The first operation unit, the trigger switch, and the second operation unit are respectively connected to the main board via wiring,
The first operation unit includes a main switch for switching on / off a power source of the reinforcing bar binding machine,
The wiring connecting between the main board and the first operation unit is a communication line for communicating signals, which is provided separately from a power line that supplies power from the battery to the feed motor or the torsion motor. Rebar binding machine .

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