Steel bar binding machine

Abstract

A rebar binding machine is provided with: a first brushless motor that conveys a wire wound around a reel; a second brushless motor that twists the metal wires; a head part on which the second brushless motor is arranged; a handle portion extending downward from the head portion; a foot part which is disposed below the handle part and to which a battery is connected; a connecting part which is disposed in front of the handle part and connects the head part and the foot part, and in which the reel and the first brushless motor are disposed; and a controller that controls the first brushless motor and the second brushless motor. The controller is arranged on the handle part.

Description

Technical Field

[0001] The technology disclosed in this specification relates to a steel bar bundling machine. Background Art

[0002] In the technical field of reinforcing bar binding machines, a reinforcing bar binding machine as disclosed in Patent Document 1 is known.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2022-011577 Summary of the invention

[0006] Problem that the invention aims to solve

[0007] When a brushless motor is used as a power source of a reinforcing bar binding machine, a controller for controlling the brushless motor is required. In order to suppress the increase in size of the reinforcing bar binding machine, the controller needs to be arranged at an appropriate position.

[0008] An object of the technology disclosed in this specification is to arrange a controller at an appropriate position in a reinforcing bar tying machine.

[0009] Solutions for solving problems

[0010] The present specification discloses a steel bar bundling machine. Alternatively, the steel bar bundling machine includes: a first brushless motor that conveys a metal wire wound on a reel; a second brushless motor that twists the metal wire; a head portion, on which the second brushless motor is arranged; a handle portion that extends downward from the head portion; a foot portion that is arranged below the handle portion, on which a battery is connected; a connecting portion that is arranged in front of the handle portion and connects the head portion and the foot portion, on which the reel and the first brushless motor are arranged; and a controller that controls the first brushless motor and the second brushless motor, and the controller is arranged on the handle portion.

[0011] Effects of the Invention

[0012] According to the technology disclosed in this specification, in the reinforcing bar tying machine, the controller is arranged at an appropriate position. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a perspective view of the reinforcing bar binding machine according to the first embodiment as viewed from the upper left front.

[0014] Figure 2 This is a perspective view of the reinforcing bar binding machine according to the first embodiment as viewed from the upper left rear.

[0015] Figure 3 This is a diagram showing the internal structure of the reinforcing bar tying machine according to the first embodiment when viewed from the left.

[0016] Figure 4 This is an exploded perspective view of the feed motor according to the first embodiment as viewed from the lower right rear side.

[0017] Figure 5 This is an exploded perspective view of the feed motor according to the first embodiment as viewed from the lower right front.

[0018] Figure 6 This is an exploded perspective view of the twist motor according to the first embodiment as seen from the upper right front.

[0019] Figure 7 This is an exploded perspective view of the twist motor according to the first embodiment as viewed from the upper right rear.

[0020] Figure 8 It is a front view showing the controller of the first embodiment.

[0021] Fig. 9 It is a rear view showing the controller according to the first embodiment.

[0022] Fig.10 It is a diagram schematically showing an example of arrangement of a controller according to the first embodiment.

[0023] Fig.11 It is a diagram schematically showing an example of arrangement of a controller according to the second embodiment.

[0024] Fig.12 It is a diagram schematically showing a configuration example of a controller according to the third embodiment.

[0025] Fig.13 It is a diagram schematically showing a configuration example of a controller according to a fourth embodiment.

[0026] Fig.14 It is a diagram schematically showing a configuration example of a controller according to the fifth embodiment.

[0027] Fig.15 This is an exploded perspective view of the feed motor according to the fifth embodiment as viewed from the lower right rear side.

[0028] Fig.16 This is an exploded perspective view of the feed motor according to the fifth embodiment as viewed from the lower right front.

[0029] Fig.17 This is an exploded perspective view of the twist motor according to the fifth embodiment as viewed from the upper right front.

[0030] Fig.18 This is an exploded perspective view of the twist motor according to the fifth embodiment as viewed from the upper right rear.

[0031] Fig.19 It is a front view of the controller of the fifth embodiment.

[0032] Fig. 20 This is a diagram schematically showing a configuration example of a controller according to the sixth embodiment.

[0033] Fig.21 This is a diagram schematically showing an example of the configuration of the controller according to the seventh embodiment.

[0034] Fig. 22 It is a diagram schematically showing a configuration example of a controller according to the eighth embodiment.

[0035] Fig.23 This is a diagram schematically showing an example of a configuration of a controller according to the ninth embodiment.

[0036] Fig.24 It is a diagram schematically showing a configuration example of a controller according to the tenth embodiment.

[0037] Fig.25 It is a perspective schematic diagram showing a controller according to the tenth embodiment.

[0038] Fig.26 This is an exploded perspective view of the feed motor according to the tenth embodiment as viewed from the lower right rear side.

[0039] Fig. 27 This is an exploded perspective view of the feed motor according to the tenth embodiment as viewed from the lower right front.

[0040] Fig.28 This is an exploded perspective view of the twist motor according to the tenth embodiment as viewed from the lower right rear side.

[0041] Fig.29 This is an exploded perspective view of the twist motor according to the tenth embodiment as viewed from the lower right front.

[0042] Fig.30 It is a diagram schematically showing a configuration example of a controller according to the eleventh embodiment.

[0043] Fig.31 This is a diagram schematically showing a configuration example of a controller according to the twelfth embodiment. DETAILED DESCRIPTION

[0044] In one or more embodiments, the steel bar bundling machine may include: a first brushless motor that transports the metal wire wound on a reel; a second brushless motor that twists the metal wire; a head portion at which the second brushless motor is arranged; a handle portion that extends downward from the head portion; a foot portion that is arranged below the handle portion and at which a battery is connected; a connecting portion that is arranged in front of the handle portion and connects the head and the foot portion, at which the reel and the first brushless motor are arranged; and a controller that controls the first brushless motor and the second brushless motor, and the controller is arranged on the handle portion.

[0045] In the above structure, the controller is arranged at an appropriate position in the reinforcing bar binding machine.

[0046] In one or more embodiments, the first cable connecting the first brushless motor and the controller may pass through the head.

[0047] In the above structure, in the reinforcing bar binding machine, the first brushless motor, the controller, and the first cable are arranged at appropriate positions.

[0048] In one or more embodiments, the reinforcing bar binding machine may include an operation display unit disposed on the head portion. The operation display unit and the controller may be connected via a second cable.

[0049] In the above configuration, in the reinforcing bar tying machine, the operation display unit, the controller, and the second cable are arranged in an appropriate positional relationship.

[0050] In one or more embodiments, the first brushless motor may include a first stator and a first rotor disposed around the first stator. The first brushless motor may be disposed in such a manner that the axis of rotation of the first rotor extends in the front-to-back direction. The first terminal connecting the plurality of coils of the first stator may be disposed on the upper portion of the first stator. The first sensor substrate for detecting the rotation of the first rotor may be disposed at a position further rearward than the first stator. The first terminal and the controller may be connected by a first power cable. The first sensor substrate and the controller may be connected by a first signal cable.

[0051] In the above structure, the first brushless motor and the controller are arranged in an appropriate positional relationship.

[0052] In one or more embodiments, the second brushless motor may include a second stator and a second rotor disposed around the second stator. The second brushless motor may be disposed in such a manner that the axis of rotation of the second rotor extends in the front-to-back direction. The second terminal connecting the plurality of coils of the second stator may be disposed at the lower portion of the second stator. The second sensor substrate for detecting the rotation of the second rotor may be disposed at a position forward of the second stator. The second terminal and the controller may be connected by a second power cable. The second sensor substrate and the controller may be connected by a second signal cable.

[0053] In the above structure, the second brushless motor and the controller are arranged in an appropriate positional relationship.

[0054] In one or more embodiments, the steel bar bundling machine may include: a first brushless motor that transports the metal wire wound on a reel; a second brushless motor that twists the metal wire; a head portion at which the second brushless motor is arranged; a handle portion that extends downward from the head portion; a foot portion that is arranged below the handle portion and at which a battery is connected; a connecting portion that is arranged in front of the handle portion and connects the head and the foot portion, at which the reel and the first brushless motor are arranged; and a controller that controls the first brushless motor and the second brushless motor, the controller being arranged between the first brushless motor and the second brushless motor in the up and down direction.

[0055] In the above structure, the controller is arranged at an appropriate position in the reinforcing bar binding machine.

[0056] In one or more embodiments, the first brushless motor and the controller may be connected by a first cable. The first cable may be connected to a lower surface of a circuit board of the controller.

[0057] In the above structure, the first brushless motor, the controller, and the first cable are arranged in an appropriate positional relationship.

[0058] In one or more embodiments, the reinforcing bar binding machine may include an operation display unit disposed on the head. The operation display unit and the controller may be connected by a second cable. The second cable may be connected to the upper surface of the circuit board of the controller.

[0059] In the above configuration, in the reinforcing bar tying machine, the operation display unit, the controller, and the second cable are arranged at appropriate positions.

[0060] In one or more embodiments, the first brushless motor may include a first stator and a first rotor disposed around the first stator. The first brushless motor may be disposed in such a manner that the axis of rotation of the first rotor extends in the front-to-back direction. The first terminal connecting the plurality of coils of the first stator may be disposed on the upper portion of the first stator. The first sensor substrate for detecting the rotation of the first rotor may be disposed at a position further rearward than the first stator. The first terminal and the controller may be connected by a first power cable. The first sensor substrate and the controller may be connected by a first signal cable.

[0061] In the above structure, the first brushless motor and the controller are arranged in an appropriate positional relationship.

[0062] In one or more embodiments, the second brushless motor may include a second stator and a second rotor disposed around the second stator. The second brushless motor may be disposed in such a manner that the axis of rotation of the second rotor extends in the front-to-back direction. The second terminal connecting the plurality of coils of the second stator may be disposed at the lower portion of the second stator. The second sensor substrate for detecting the rotation of the second rotor may be disposed at a position forward of the second stator. The second terminal and the controller may be connected by a second power cable. The second sensor substrate and the controller may be connected by a second signal cable.

[0063] In the above structure, the second brushless motor and the controller are arranged in an appropriate positional relationship.

[0064] In one or more embodiments, the steel bar bundling machine may include: a first brushless motor that transports the metal wire wound on a reel; a second brushless motor that twists the metal wire; a head portion, at which the second brushless motor is arranged; a handle portion that extends downward from the head portion; a foot portion that is arranged below the handle portion, at which a battery is connected; a connecting portion that is arranged in front of the handle portion and connects the head and the foot portion, at which the reel and the first brushless motor are arranged; and a controller that includes a circuit substrate, the controller controls the first brushless motor and the second brushless motor, the second surface of the circuit substrate and the first brushless motor are connected by a cable, and the first surface of the circuit substrate and the second brushless motor are connected by a cable.

[0065] In the above structure, the controller is arranged at an appropriate position in the reinforcing bar binding machine.

[0066] In one or more embodiments, the controller may be configured on the head.

[0067] In the above structure, the controller is arranged at an appropriate position in the reinforcing bar binding machine.

[0068] In one or more embodiments, the reinforcing bar binding machine may include an operation display unit disposed on the head portion. The first surface of the circuit board and the operation display unit may be connected by a cable.

[0069] In the above structure, in the reinforcing bar tying machine, the operation display unit, the controller, and the cables are arranged in an appropriate positional relationship.

[0070] In one or more embodiments, the first brushless motor may include a first stator and a first rotor disposed around the first stator. The first brushless motor may be disposed in such a manner that the axis of rotation of the first rotor extends in the front-to-back direction. The first terminal connecting the plurality of coils of the first stator may be disposed on the upper portion of the first stator. The first sensor substrate for detecting the rotation of the first rotor may be disposed at a position further rearward than the first stator. The first terminal and the controller may be connected by a first power cable. The first sensor substrate and the controller may be connected by a first signal cable.

[0071] In the above structure, the first brushless motor and the controller are arranged in an appropriate positional relationship.

[0072] In one or more embodiments, the second brushless motor may include a second stator and a second rotor disposed around the second stator. The second brushless motor may be disposed in such a manner that the axis of rotation of the second rotor extends in the front-to-back direction. The second terminal connecting the plurality of coils of the second stator may be disposed at the lower portion of the second stator. The second sensor substrate for detecting the rotation of the second rotor may be disposed at a position forward of the second stator. The second terminal and the controller may be connected by a second power cable. The second sensor substrate and the controller may be connected by a second signal cable.

[0073] In the above structure, the second brushless motor and the controller are arranged in an appropriate positional relationship.

[0074] In one or more embodiments, at least one of the first brushless motor and the second brushless motor may include a sensor substrate for detecting rotation of the rotor. The sensor substrate may include an inverter circuit for driving the motor.

[0075] In the above structure, the structure of the controller is simplified and the degree of freedom of configuration of the controller is improved.

[0076] In one or more embodiments, the controller may include a circuit board including an inverter circuit for driving the motor and a heat sink thermally connected to the inverter circuit.

[0077] In the above configuration, it is possible to suppress a temperature increase in the controller.

[0078] In one or more embodiments, the reinforcing bar tying machine may further include a wireless communication unit provided on the handle.

[0079] In the above structure, the wireless communication unit and the controller are arranged in an appropriate positional relationship.

[0080] In one or more embodiments, the reinforcing bar binding machine may include a noise removing member for removing electromagnetic noise on a power line connecting at least one of the first brushless motor and the second brushless motor and the controller.

[0081] In the above structure, the influence of electromagnetic noise can be suppressed by arranging the brushless motor and the controller in an appropriate positional relationship.

[0082] In one or more embodiments, the steel bar bundling machine may include: a first brushless motor that transports the metal wire wound on a reel; a second brushless motor that twists the metal wire; a head portion at which the second brushless motor is arranged; a handle portion that extends downward from the head portion; a foot portion that is arranged below the handle portion and at which a battery is connected; a connecting portion that is arranged in front of the handle portion and connects the head and the foot portion, at which the reel and the first brushless motor are arranged; and a controller that controls the first brushless motor and the second brushless motor, the controller being arranged at the foot portion, the controller having a circuit substrate, a controller housing that accommodates the circuit substrate, and a terminal that connects the battery and the circuit substrate.

[0083] In the above structure, the controller is arranged at an appropriate position in the reinforcing bar binding machine.

[0084] Hereinafter, the embodiment will be described with reference to the drawings. In the embodiment, the terms left, right, front, rear, top, and bottom are used to describe the positional relationship of each part. These terms represent relative positions or directions with respect to the center of the reinforcing bar binding machine 2 as a reference.

[0085] [First embodiment]

[0086] <Rebar tying machine>

[0087] The first embodiment will be described. Figure 1 This is a perspective view of the reinforcing bar binding machine 2 according to the present embodiment as viewed from the upper left front. Figure 2 This is a perspective view of the reinforcing bar binding machine 2 according to the present embodiment as viewed from the upper left rear. Figure 3 This is a diagram showing the internal structure of the reinforcing bar binding machine 2 according to the present embodiment as viewed from the left. The reinforcing bar binding machine 2 is an electric tool for binding a plurality of reinforcing bars together using wires.

[0088] The reinforcing bar binding machine 2 includes a feeding motor 100, a twisting motor 200, a head 4, a handle 6, a leg 8, a connecting part 26, and a controller 300. A metal wire is wound around a reel 33. The feeding motor 100 conveys the metal wire wound around the reel 33. The twisting motor 200 twists the metal wire conveyed by the feeding motor 100. The twisting motor 200 is arranged at the head 4. The handle 6 extends downward from the head 4 and is held by a user. The leg 8 is arranged below the handle 6 and is connected to a battery 10. The battery 10 is detachable from the lower part of the leg 8. The battery 10 is a sliding type battery that can be detached by sliding relative to the leg 8. The battery 10 is a lithium ion battery that can be charged by a charger. When the battery 10 is mounted on the leg 8, power is supplied from the battery 10 to the reinforcing bar binding machine 2. A battery terminal electrically connected to the battery 10 is provided on the lower surface of the leg 8. The battery terminal is electrically connected to the controller 300. The connection part 26 is arranged in front of the handle part 6 and connects the head part 4 and the leg part 8. The winding drum 33 and the feeding motor 100 are arranged in the connection part 26. The controller 300 controls the feeding motor 100 and the twisting motor 200. The controller 300 is arranged in the handle part 6.

[0089] A trigger 12 is attached to the upper front surface of the grip portion 6. The battery 10 can be slidably attached and detached with respect to the leg portion 8. The battery 10 includes a secondary battery such as a lithium ion battery, for example.

[0090] The reinforcing bar binding machine 2 includes a housing 16. The housing 16 includes a right housing 18, a left housing 20, and a motor cover 22. The right housing 18 defines the shape of the right half of the head 4, the handle 6, and the leg 8. The left housing 20 defines the shape of the left half of the head 4, the handle 6, and the leg 8. The motor cover 22 is attached to the outside of the right housing 18. A first operation display unit 24 is provided at the upper rear portion of the left housing 20. The first operation display unit 24 includes a main power switch and a mode switching switch as an operation unit, and a main power LED and a mode display LED as a display unit.

[0091] The connecting portion 26 is connected to the front lower portion of the head 4 and the front portion of the foot 8. The cover member 28 is mounted on the connecting portion 26 so as to be rotatable around the rotation axis of the lower portion of the connecting portion 26. A locking lever 32 is provided at the front lower portion of the left housing 20, and the locking lever 32 is used to keep the cover member 28 in a closed state. A reel 33 wound with a wire is stored in the storage space of the connecting portion 26. The reel 33 is supported by the connecting portion 26 and the cover member 28 so as to be rotatable.

[0092] A second operation display unit 34 is provided on the rear surface of the connection unit 26. The second operation display unit 34 includes a setting changeover switch as an operation unit and a setting display LED as a display unit.

[0093] The reinforcing bar tying machine 2 includes a wire feeding mechanism 38, a wire guiding mechanism 40, a reinforcing bar contact mechanism 42, a wire cutting mechanism 44, a wire twisting mechanism 46, a speed reducing mechanism 47, and a reinforcing bar pressing mechanism 48. The wire feeding mechanism 38 is accommodated in the front lower portion of the head 4. The wire guiding mechanism 40 is arranged in the front portion of the head 4. The reinforcing bar contact mechanism 42 is arranged in the front portion of the head 4. The wire twisting mechanism 46 is accommodated in the head 4. The speed reducing mechanism 47 reduces the rotation of the twisting motor 200 and transmits it to the wire twisting mechanism 46. The reinforcing bar pressing mechanism 48 is arranged in the front portion of the head 4. The wire feeding mechanism 38 includes a feeding motor 100. The reinforcing bar contact mechanism 42 includes a contact arm 118. The wire twisting mechanism 46 includes a twisting motor 200. The reinforcing bar pressing mechanism 48 includes a contact plate 58 and a contact plate 60.

[0094] When the trigger 12 is operated to rotate the feed motor 100 in the forward direction, the wire feed mechanism 38 feeds a predetermined length of the wire wound on the drum 33. The wire is wound around the reinforcing bar in a circular ring shape, and when the wire feeding is completed, the feed motor 100 stops. After the feeding process is completed, the wire is cut by the wire cutting mechanism 44, and the wire is twisted by the rotation of the twisting motor 200.

[0095] <Motor>

[0096] Figure 4 This is an exploded perspective view of the feed motor 100 according to the present embodiment as viewed from the lower right rear side. Figure 5 1 is an exploded perspective view of the feed motor 100 of the present embodiment as viewed from the lower right front. The feed motor 100 generates a rotational force. The feed motor 100 is an electric motor. The feed motor 100 is an inner rotor type brushless motor. The feed motor 100 has a stator 101, a rotor 102, and a rotor shaft 103. The stator 101 is arranged around the rotor 102. The rotor 102 is arranged around the rotor shaft 103. The rotor shaft 103 is fixed to the rotor 102. The rotor 102 and the rotor shaft 103 rotate relative to the stator 101. The rotor 102 and the rotor shaft 103 rotate around a rotation axis extending in the front-rear direction.

[0097] The stator 101 has a stator core 104, an insulator 112, and a coil 105. The stator core 104 has a circular yoke and a plurality of teeth protruding radially inward from the inner circumference of the yoke. The stator core 104 is arranged at a position radially outward from the rotor 102. The stator core 104 includes a plurality of stacked steel plates. The steel plate is a plate made of metal with iron as the main component. The stator core 104 is cylindrical. The teeth of the stator core 104 support the coil 105. In this embodiment, 6 teeth are provided.

[0098] The coil 105 is mounted on the stator core 104 via an insulator 112. A plurality of coils 105 are arranged. The coil 105 is wound around the teeth of the stator core 104 via the insulator 112. The insulator 112 is an electrical insulating member made of synthetic resin. The coil 105 and the stator core 104 are electrically insulated by the insulator 112. The plurality of coils 105 are connected via a bus bar and a terminal 106 (fusing terminal). In the present embodiment, six coils 105 are provided. Two coils 105 are assigned to the U-phase coil, two coils 105 are assigned to the V-phase coil, and two coils 105 are assigned to the W-phase coil. Three terminals 106 are provided. The first terminal 106 connects a pair of U-phase coils. The second terminal 106 connects a pair of V-phase coils. The third terminal 106 connects a pair of W-phase coils. In the present embodiment, the three terminals 106 are arranged at the rear of the stator core 104. The three terminals 106 are arranged side by side in the left-right direction.

[0099] The rotor 102 has a rotor core 107, a rotor magnet 108, and a balance correction plate 113. The rotor core 107 and the rotor shaft 103 are respectively made of steel. The rotor shaft 103 is arranged in a through hole provided at the center of the rotor core 107. The rotor core 107 and the rotor shaft 103 are fixed. The front part of the rotor shaft 103 protrudes forward from the front end surface of the rotor core 107. An output pinion 114 is fixed to the front part of the rotor shaft 103. The rotational force of the rotor shaft 103 is output via the output pinion 114. The rear part of the rotor shaft 103 protrudes rearward from the rear end surface of the rotor core 107. The rotor magnet 108 is fixed to the rotor core 107. The rotor magnet 108 is arranged inside the magnet hole provided in the rotor core 107. In the present embodiment, four rotor magnets 108 are arranged in the circumferential direction of the rotor core 107. The balance correction plate 113 is fixed to the front end surface of the rotor core 107. The balance correction plate 113 is made of brass. The balance correction plate 113 corrects the rotational balance of the rotor 102 to improve the rotational balance of the rotor 102 .

[0100] A sensor substrate 109 is mounted on the stator 101. The sensor substrate 109 includes an annular circuit substrate portion 109A facing the rear end surface of the rotor core 107 and a support portion 109B connected to the upper portion of the stator core 104. A magnetic sensor 110 is arranged on the circuit substrate portion 109A. At least a portion of the circuit substrate portion 109A faces the rotor magnet 108. The magnetic sensor 110 detects the position of the rotor magnet 108 based on the magnetic flux, thereby detecting the position of the rotor 102 in the rotation direction.

[0101] A fan 111 is fixed to the front end of the rotor shaft 103. When the rotor shaft 103 rotates, the fan 111 rotates together with the rotor shaft 103. By rotating the fan 111, an air flow for cooling the feed motor 100 is generated.

[0102] Figure 6 This is an exploded perspective view of the twist motor 200 according to the present embodiment as viewed from the upper right front. Figure 7 This is an exploded perspective view of the twisted motor 200 of this embodiment as viewed from the upper right rear. The twisted motor 200 generates a rotational force. The twisted motor 200 is an electric motor. The twisted motor 200 is an inner rotor type brushless motor. The twisted motor 200 has a stator 201, a rotor 202, and a rotor shaft 203. The stator 201 is arranged around the rotor 202. The rotor 202 is arranged around the rotor shaft 203. The rotor shaft 203 is fixed to the rotor 202. The rotor 202 and the rotor shaft 203 rotate relative to the stator 201. The rotor 202 and the rotor shaft 203 rotate around the rotation axis extending in the front-rear direction.

[0103] The stator 201 has a stator core 204, an insulator 212, and a coil 205. The stator core 204 has a circular yoke and a plurality of teeth protruding radially inward from the inner circumference of the yoke. The stator core 204 is arranged at a position radially outward from the rotor 202. The stator core 204 includes a plurality of stacked steel plates. The steel plate is a plate made of metal with iron as the main component. The stator core 204 is cylindrical. The teeth of the stator core 204 support the coil 205. In this embodiment, 6 teeth are provided.

[0104] The coil 205 is mounted on the stator core 204 via an insulator 212. A plurality of coils 205 are provided. The coil 205 is wound around the teeth of the stator core 204 via the insulator 212. The insulator 212 is an electrical insulating member made of synthetic resin. The coil 205 and the stator core 204 are electrically insulated by the insulator 212. The plurality of coils 205 are connected via a bus bar and a terminal 206 (welding terminal). In the present embodiment, six coils 205 are provided. Two coils 205 are assigned to the U-phase coil, two coils 205 are assigned to the V-phase coil, and two coils 205 are assigned to the W-phase coil. Three terminals 206 are provided. The first terminal 206 connects a pair of U-phase coils. The second terminal 206 connects a pair of V-phase coils. The third terminal 206 connects a pair of W-phase coils. In the present embodiment, three terminals 206 are arranged at the lower part of the stator core 204. The three terminals 206 are arranged side by side in the left-right direction.

[0105] The rotor 202 has a rotor core 207, a rotor magnet 208, and a balance correction plate 213. The rotor core 207 and the rotor shaft 203 are respectively made of steel. The rotor shaft 203 is arranged in a through hole provided at the center of the rotor core 207. The rotor core 207 and the rotor shaft 203 are fixed. The front part of the rotor shaft 203 protrudes forward from the front end surface of the rotor core 207. An output pinion 214 is fixed to the front part of the rotor shaft 203. The rotational force of the rotor shaft 203 is output via the output pinion 214. The rear part of the rotor shaft 203 protrudes rearward from the rear end surface of the rotor core 207. The rotor magnet 208 is fixed to the rotor core 207. The rotor magnet 208 is arranged inside the magnet hole provided in the rotor core 207. In the present embodiment, four rotor magnets 208 are arranged in the circumferential direction of the rotor core 207. The balance correction plate 213 is fixed to the rear end surface of the rotor core 207. The balance correction plate 213 is made of brass. The balance correction plate 213 corrects the rotational balance of the rotor 202 to improve the rotational balance of the rotor 202 .

[0106] A sensor substrate 209 is mounted on the stator 201. The sensor substrate 209 includes a circular circuit substrate portion 209A facing the rear end surface of the rotor core 207 and a support portion 209B connected to the lower portion of the stator core 204. A magnetic sensor 210 is arranged on the circuit substrate portion 209A. At least a portion of the circuit substrate portion 209A faces the rotor magnet 208. The magnetic sensor 210 detects the position of the rotor magnet 208 based on the magnetic flux, thereby detecting the position of the rotor 202 in the rotation direction.

[0107] A fan 211 is fixed to the rear of the rotor shaft 203. When the rotor shaft 203 rotates, the fan 211 rotates together with the rotor shaft 203. By rotating the fan 211, an air flow for cooling the twist motor 200 is generated.

[0108] <Controller>

[0109] Figure 8 It is a front view showing the controller 300 of this embodiment. Fig. 9 Controller 300 of this embodiment is a rear view. Controller 300 includes circuit board 301, first control circuit 310 mounted on circuit board 301, and second control circuit 320 mounted on circuit board 301. First control circuit 310 controls feed motor 100. Second control circuit 320 controls twisting motor 200.

[0110] The circuit board 301 is in the shape of a long plate that is long in a predetermined direction. The circuit board 301 has a first surface 301A and a second surface 301B that faces the opposite direction of the first surface 301A. The first control circuit 310 and the second control circuit 320 are mounted on the first surface 301A of the circuit board 301, respectively.

[0111] The first control circuit 310 includes a microcomputer 311, a gate drive circuit 312, an inverter circuit 313, and a capacitor 314. The microcomputer 311 includes a processor such as a CPU (Central Processing Unit), a non-volatile memory such as a ROM (Read Only Memory), and a volatile memory such as a RAM (Random Access Memory). The inverter circuit 313 supplies a drive current to the coil 205 based on the power supplied from the battery 10. The inverter circuit 313 has 6 switching elements. The switching element includes a field effect transistor (FET: Field Effect Transistor). In addition, the switching element can be an IGBT or a MOSFET. The gate drive circuit 312 is a drive circuit that drives the switching element of the inverter circuit 313. The microcomputer 311 outputs a control signal to the gate drive circuit 312 to drive the switching element of the inverter circuit 313. The capacitor 314 is provided to reduce the noise when the switching element is opened and closed. The capacitor 314 is provided to reduce the inductance when the battery 10 is mounted on the leg portion 8 .

[0112] The second control circuit 320 includes a microcomputer 321, a gate drive circuit 322, an inverter circuit 323, and a capacitor 324. The structure and function of the microcomputer 321 are substantially the same as the structure and function of the microcomputer 311. The structure and function of the gate drive circuit 322 are substantially the same as the structure and function of the gate drive circuit 312. The structure and function of the inverter circuit 323 are substantially the same as the structure and function of the inverter circuit 313. The structure and function of the capacitor 324 are substantially the same as the structure and function of the capacitor 314. The description of the microcomputer 321, the gate drive circuit 322, the inverter circuit 323, and the capacitor 324 is omitted.

[0113] <Controller Configuration>

[0114] Fig.10 : is a diagram schematically showing an example of the configuration of the controller 300 of the present embodiment. The controller 300 is configured on the handle portion 6. The controller 300 is configured on the handle portion 6 in a manner that the circuit substrate 301 extends in the up-down direction. The controller 300 is configured on the handle portion 6 in a manner that the first surface 301A of the circuit substrate 301 on which the first control circuit 310 and the second control circuit 320 are mounted faces the left. In addition, the controller 300 may be configured on the handle portion 6 in a manner that the first surface 301A of the circuit substrate 301 faces the left.

[0115] The feed motor 100 is arranged in front of the controller 300. The twisting motor 200 is arranged above the controller 300. The feed motor 100 is arranged in the connection portion 26. The twisting motor 200 is arranged in the head portion 4. The feed motor 100 is arranged in front of the twisting motor 200.

[0116] The feed motor 100 is arranged in such a manner that the rotation axis of the rotor 102 and the rotor shaft 103 extends in the front-to-back direction. The fan 111 is arranged at a position forward of the stator 101. The terminal 106 that connects the plurality of coils of the stator 101 is arranged at an upper portion of the stator 101. The sensor substrate 109 that detects the rotation of the rotor 102 is arranged at a position backward of the stator 101. The terminal 106 and the controller 300 are connected by a power cable 401. As described above, three terminals 106 are provided. One terminal 106 and the controller 300 are connected by one power cable 401. Three power cables 401 are provided. Five signal cables 402 are provided. The power cable 401 and the signal cable 402 are respectively passed through the head 4.

[0117] The twisted motor 200 is configured in such a manner that the rotation axis of the rotor 202 and the rotor shaft 203 extends in the front-to-back direction. The fan 211 is configured at a position rearward of the stator 201. The terminal 206 that connects the plurality of coils of the stator 201 is configured at a lower portion of the stator 201. The sensor substrate 209 that detects the rotation of the rotor 202 is configured at a position forward of the stator 201. The terminal 206 and the controller 300 are connected by the power cable 403. As described above, three terminals 206 are provided. One terminal 206 and the controller 300 are connected by one power cable 403. Three power cables 403 are provided. Five signal cables 404 are provided.

[0118] The controller 300 and the battery terminal of the battery 10 are connected by a power supply cable 405. Two power supply cables 405 are provided. Electric power is output from the battery 10 to the controller 300 via the power supply cable 405.

[0119] The controller 300 and the trigger 12 are connected by a signal cable 406. One signal cable 406 is provided. An operation signal generated by operating the trigger 12 is transmitted to the controller 300 via the signal cable 406.

[0120] The first operation display unit 24 is arranged on the head 4. The controller 300 and the first operation display unit 24 are connected by a signal cable 407. A plurality of signal cables 407 are provided. The first signal cable 407 connects the controller 300 and the operation unit of the first operation display unit 24. The second signal cable 407 connects the controller 300 and the display unit of the first operation display unit 24. An operation signal generated by operating the operation unit of the first operation display unit 24 is sent to the controller 300 via the first signal cable 407. A display command signal generated in the controller 300 is sent to the display unit of the first operation display unit 24 via the second signal cable 407.

[0121] The second operation display unit 34 is arranged on the connection unit 26. The controller 300 and the second operation display unit 34 are connected by a signal cable 408. A plurality of signal cables 408 are provided. The first signal cable 408 connects the controller 300 and the operation unit of the second operation display unit 34. The second signal cable 408 connects the controller 300 and the display unit of the second operation display unit 34. An operation signal generated by operating the operation unit of the second operation display unit 34 is sent to the controller 300 via the first signal cable 408. A display command signal generated in the controller 300 is sent to the display unit of the second operation display unit 34 via the second signal cable 408.

[0122] The first control circuit 310 supplies power from the battery 10 to the terminal 106 via the power cable 401. The power supplied to the terminal 106 is supplied to the coil of the feed motor 100. By supplying power to the coil of the feed motor 100, the rotor 102 of the feed motor 100 rotates. The detection signal of the sensor substrate 109 that detects the rotation of the rotor 102 is input to the first control circuit 310 via the signal cable 402. The first control circuit 310 controls the power supplied to the coil of the feed motor 100 based on the detection signal from the sensor substrate 109.

[0123] The second control circuit 320 supplies power from the battery 10 to the terminal 206 via the power cable 403. The power supplied to the terminal 206 is supplied to the coil of the twisting motor 200. By supplying power to the coil of the twisting motor 200, the rotor 202 of the twisting motor 200 rotates. The detection signal of the sensor substrate 209 that detects the rotation of the rotor 202 is input to the second control circuit 320 via the signal cable 404. The second control circuit 320 controls the power supplied to the coil of the twisting motor 200 based on the detection signal from the sensor substrate 209.

[0124] <Effect>

[0125] As described above, in the embodiment, the reinforcing bar binding machine 2 includes: a feed motor 100 which is a first brushless motor and feeds the metal wire wound on the drum 33; a twisting motor 200 which is a second brushless motor and twists the metal wire; a head 4 on which the twisting motor 200 is arranged; a handle 6 which extends downward from the head 4; a foot 8 which is arranged below the handle 6 and to which the battery 10 is connected; a connecting part 26 which is arranged in front of the handle 6 and connects the head 4 and the foot 8 and to which the drum 33 and the feed motor 100 are arranged; and a controller 300 which controls the feed motor 100 and the twisting motor 200. The controller 300 is arranged on the handle 6.

[0126] In the above-mentioned structure, in the reinforcing bar tying machine 2, the controller 300 is arranged at an appropriate position.

[0127] In the embodiment, the power cable 401 and the signal cable 402 as first cables connecting the feed motor 100 as the first brushless motor and the controller 300 are passed through the head 4 .

[0128] In the above-described structure, in the reinforcing bar tying machine 2, the feed motor 100, the controller 300, the power cable 401, and the signal cable 402 are arranged at appropriate positions.

[0129] In the embodiment, the reinforcing bar binding machine 2 includes the first operation display unit 24 disposed in the head 4. The first operation display unit 24 and the controller 300 are connected by a signal cable 407 as a second cable.

[0130] In the above-described configuration, in the reinforcing bar tying machine 2, the first operation display unit 24, the controller 300, and the signal cable 407 are arranged in an appropriate positional relationship.

[0131] In the embodiment, the feed motor 100 as the first brushless motor has a stator 101 as the first stator and a rotor 102 as the first rotor arranged around the stator 101. The feed motor 100 is arranged in a manner such that the rotation axis of the rotor 102 extends in the front-rear direction. A terminal 106 as a first terminal connecting a plurality of coils 105 of the stator 101 is arranged at an upper portion of the stator 101. A sensor substrate 109 as a first sensor substrate for detecting the rotation of the rotor 102 is arranged at a position rearward of the stator 101. The terminal 106 and the controller 300 are connected by a power cable 401 as a first power cable. The sensor substrate 109 and the controller 300 are connected by a signal cable 402 as a first signal cable.

[0132] In the above-described structure, the feed motor 100 and the controller 300 are arranged in an appropriate positional relationship.

[0133] In the embodiment, the twisted motor 200 as the second brushless motor has a stator 201 as the second stator and a rotor 202 as the second rotor arranged around the stator 201. The twisted motor 200 is arranged in a manner such that the rotation axis of the rotor 202 extends in the front-rear direction. The terminal 206 as the second terminal connecting the plurality of coils 205 of the stator 201 is arranged at the lower part of the stator 201. The sensor substrate 209 as the second sensor substrate for detecting the rotation of the rotor 202 is arranged at a position forward of the stator 201. The terminal 206 and the controller 300 are connected by a power cable 403 as a second power cable. The sensor substrate 209 and the controller 300 are connected by a signal cable 404 as a second signal cable.

[0134] In the above structure, the second brushless motor and the controller are arranged in an appropriate positional relationship.

[0135] [Second embodiment]

[0136] In the following description, the same reference numerals are given to the same or equivalent components as those in the above-described embodiment, and the description of the components is simplified or omitted.

[0137] Fig.11 Schematically shows an example of the configuration of the controller 300 of this embodiment. Fig.11 In the example shown, the controller 300 is arranged in the head 4. The controller 300 is arranged between the feed motor 100 and the twisting motor 200 in the up-down direction. The controller 300 is arranged in the head 4 in such a manner that the circuit board 301 extends in the front-back direction. The controller 300 is arranged in the head 4 in such a manner that the first surface 301A of the circuit board 301 on which the first control circuit 310 and the second control circuit 320 are mounted faces upward.

[0138] A first control circuit 310 including a gate drive circuit 312 and an inverter circuit 313 for controlling the feed motor 100 is mounted on the front side of the circuit board 301. A second control circuit 320 including a gate drive circuit 322 and an inverter circuit 323 for controlling the twisting motor 200 is mounted on the rear side of the circuit board 301.

[0139] The second surface 301B of the circuit substrate 301 and the feed motor 100 are connected by a power cable 401, and the second surface 301B of the circuit substrate 301 and the sensor substrate 109 are connected by a signal cable 402. The first surface 301A of the circuit substrate 301 and the twisting motor 200 are connected by a power cable 403, and the first surface 301A of the circuit substrate 301 and the sensor substrate 209 are connected by a signal cable 404.

[0140] As described above, the controller 300 is arranged between the feed motor 100 and the twisting motor 200 in the vertical direction. In addition, the second surface 301B of the circuit substrate 301 and the feed motor 100 are connected by the power cable 401, and the second surface 301B of the circuit substrate 301 and the sensor substrate 109 are connected by the signal cable 402. The first surface 301A of the circuit substrate 301 and the twisting motor 200 are connected by the power cable 403, and the first surface 301A of the circuit substrate 301 and the sensor substrate 209 are connected by the signal cable 404. In addition, when the twisting motor 200 is arranged at a position rearward of the feed motor 100, the first control circuit 310 for controlling the feed motor 100 is mounted on the front side of the circuit substrate 301, and the second control circuit 320 for controlling the twisting motor 200 is mounted on the rear side of the circuit substrate 301. Thus, the lengths of the power cable 401 , the signal cable 402 , the power cable 403 , and the signal cable 404 can be shortened.

[0141] In the embodiment, the feed motor 100 as the first brushless motor and the controller 300 are connected by the power cable 401 and the signal cable 402 as the first cables. The power cable 401 and the signal cable 402 are connected to the second surface 301B which is the lower surface of the circuit board 301 of the controller 300.

[0142] In the above-described structure, the feed motor 100 , the controller 300 , the power cable 401 , and the signal cable 402 are arranged in an appropriate positional relationship.

[0143] In the embodiment, the reinforcing bar binding machine 2 includes the first operation display unit 24 disposed on the head 4. The first operation display unit 24 and the controller 300 are connected by a signal cable 407 as a second cable. The signal cable 407 is connected to the first surface 301A which is the upper surface of the circuit board 301 of the controller 300.

[0144] In the above-described configuration, in the reinforcing bar tying machine 2, the first operation display unit 24, the controller 300, and the signal cable 407 are arranged at appropriate positions.

[0145] In the embodiment, the feed motor 100 as the first brushless motor has a stator 101 as the first stator and a rotor 102 as the first rotor arranged around the stator 101. The feed motor 100 is arranged in a manner such that the rotation axis of the rotor 102 extends in the front-rear direction. A terminal 106 as a first terminal connecting a plurality of coils 105 of the stator 101 is arranged at an upper portion of the stator 101. A sensor substrate 109 as a first sensor substrate for detecting the rotation of the rotor 102 is arranged at a position rearward of the stator 101. The terminal 106 and the controller 300 are connected by a power cable 401 as a first power cable. The sensor substrate 109 and the controller 300 are connected by a signal cable 402 as a first signal cable.

[0146] In the above-described structure, the feed motor 100 and the controller 300 are arranged in an appropriate positional relationship.

[0147] In the embodiment, the twisted motor 200 as the second brushless motor has a stator 201 as the second stator and a rotor 202 as the second rotor arranged around the stator 201. The twisted motor 200 is arranged in a manner such that the rotation axis of the rotor 202 extends in the front-rear direction. The terminal 206 as the second terminal connecting the plurality of coils 205 of the stator 201 is arranged at the lower part of the stator 201. The sensor substrate 209 as the second sensor substrate for detecting the rotation of the rotor 102 is arranged at a position forward of the stator 201. The terminal 106 and the controller 300 are connected by a power cable 403 as a second power cable. The sensor substrate 209 and the controller 300 are connected by a signal cable 404 as a second signal cable.

[0148] In the above structure, the twisting motor 200 and the controller 300 are arranged in an appropriate positional relationship.

[0149] [Third Embodiment]

[0150] In the following description, the same reference numerals are given to the same or equivalent components as those in the above-described embodiment, and the description of the components is simplified or omitted.

[0151] Fig.12 Schematic diagram of a configuration example of the controller 300 of this embodiment. Fig.12In the example shown, the controller 300 is arranged in the head 4. The controller 300 is arranged between the feed motor 100 and the twisting motor 200 in the up-down direction. The controller 300 is arranged in the head 4 in such a manner that the circuit substrate 301 extends in the front-back direction. The first control circuit 310 is mounted on the second surface 301B of the circuit substrate 301, and the second control circuit 320 is mounted on the first surface 301A of the circuit substrate 301. The controller 300 is arranged in the head 4 in such a manner that the first surface 301A of the circuit substrate 301 faces the upward direction.

[0152] A first control circuit 310 including a gate drive circuit 312 and an inverter circuit 313 for controlling the feed motor 100 is mounted on the front side of the circuit board 301. A second control circuit 320 including a gate drive circuit 322 and an inverter circuit 323 for controlling the twisting motor 200 is mounted on the rear side of the circuit board 301.

[0153] The second surface 301B of the circuit substrate 301 and the feed motor 100 are connected by a power cable 401, and the second surface 301B of the circuit substrate 301 and the sensor substrate 109 are connected by a signal cable 402. The first surface 301A of the circuit substrate 301 and the twisting motor 200 are connected by a power cable 403, and the first surface 301A of the circuit substrate 301 and the sensor substrate 209 are connected by a signal cable 404.

[0154] As described above, the controller 300 is disposed between the feed motor 100 and the twisting motor 200 in the vertical direction. In addition, the second surface 301B of the circuit substrate 301 and the feed motor 100 are connected by the power cable 401, and the second surface 301B of the circuit substrate 301 and the sensor substrate 109 are connected by the signal cable 402. The first surface 301A of the circuit substrate 301 and the twisting motor 200 are connected by the power cable 403, and the first surface 301A of the circuit substrate 301 and the sensor substrate 209 are connected by the signal cable 404. In addition, when the twisting motor 200 is disposed at a position rearward of the feed motor 100, the first control circuit 310 for controlling the feed motor 100 is mounted on the front side of the circuit substrate 301, and the second control circuit 320 for controlling the twisting motor 200 is mounted on the rear side of the circuit substrate 301. Thus, the lengths of the power cable 401 , the signal cable 402 , the power cable 403 , and the signal cable 404 can be shortened.

[0155] In the embodiment, the controller 300 is disposed in the head 4 .

[0156] In the above-mentioned structure, in the reinforcing bar tying machine 2, the controller 300 is arranged at an appropriate position.

[0157] In the embodiment, the reinforcing bar binding machine 2 includes the first operation display unit 24 disposed in the head 4. The first surface 201A of the circuit board 301 and the first operation display unit 24 are connected by a signal cable 407.

[0158] In the above-described configuration, in the reinforcing bar tying machine 2, the first operation display unit 24, the controller 300, and the signal cable 407 are arranged in an appropriate positional relationship.

[0159] In the embodiment, the feed motor 100 as the first brushless motor has a stator 101 as the first stator and a rotor 102 as the first rotor arranged around the stator 101. The feed motor 100 is arranged in a manner such that the rotation axis of the rotor 102 extends in the front-rear direction. A terminal 106 as a first terminal connecting a plurality of coils 105 of the stator 101 is arranged at an upper portion of the stator 101. A sensor substrate 109 as a first sensor substrate for detecting the rotation of the rotor 102 is arranged at a position rearward of the stator 101. The terminal 106 and the controller 300 are connected by a power cable 401 as a first power cable. The sensor substrate 109 and the controller 300 are connected by a signal cable 402 as a first signal cable.

[0160] In the above-described structure, the feed motor 100 and the controller 300 are arranged in an appropriate positional relationship.

[0161] In the embodiment, the twisted motor 200 as the second brushless motor has a stator 201 as the second stator and a rotor 202 as the second rotor arranged around the stator 201. The twisted motor 200 is arranged in a manner such that the rotation axis of the rotor 202 extends in the front-rear direction. The terminal 206 as the second terminal connecting the plurality of coils 205 of the stator 201 is arranged at the lower part of the stator 201. The sensor substrate 209 as the second sensor substrate for detecting the rotation of the rotor 102 is arranged at a position forward of the stator 201. The terminal 106 and the controller 300 are connected by a power cable 403 as a second power cable. The sensor substrate 209 and the controller 300 are connected by a signal cable 404 as a second signal cable.

[0162] In the above structure, the twisting motor 200 and the controller 300 are arranged in an appropriate positional relationship.

[0163] [Fourth embodiment]

[0164] In the following description, the same reference numerals are given to the same or equivalent components as those in the above-mentioned embodiment, and the description of the components is simplified or omitted.

[0165] Fig.13Schematic diagram of a configuration example of the controller 3000 of this embodiment. Fig.13 In the example shown, the controller 3000 is disposed on the grip portion 6. The circuit board 3010 of the controller 3000 has a holding portion 330 for holding the trigger 12. The trigger 12 is directly held by the circuit board 3010 of the controller 3000 via the holding portion 330. The controller 3000 is an integrated controller integrated with the trigger 12. In this embodiment, the signal cable 406 is omitted.

[0166] [Fifth embodiment]

[0167] In the following description, the same reference numerals are given to the same or equivalent components as those in the above-described embodiment, and the description of the components is simplified or omitted.

[0168] Fig.14 : is a diagram schematically showing an example of the configuration of the controller 300 of the present embodiment. In the fifth embodiment, at least one of the feed motor 100 (first brushless motor) and the twisting motor 200 (second brushless motor) has a sensor substrate for detecting the rotation of the rotor, and the sensor substrate has an inverter circuit for driving the motor. Fig.14 , an example is shown in which the inverter circuit 313 is provided on the sensor substrate 109 of the feed motor 100 and the inverter circuit 323 is provided on the sensor substrate 209 of the twist motor 200 .

[0169] exist Fig.14 In the example shown, the controller 300 is arranged on the handle portion 6. The controller 300 is connected to the sensor substrate 109 of the feed motor 100 by using both a power cable 401 and a signal cable 402. The controller 300 is electrically connected to the stator 101 of the feed motor 100 via the sensor substrate 109. The controller 300 is connected to the sensor substrate 209 of the twisting motor 200 by using both a power cable 403 and a signal cable 404. The controller 300 is electrically connected to the stator 201 of the twisting motor 200 via the sensor substrate 209.

[0170] Fig.15 This is an exploded perspective view of the feed motor 100 according to the present embodiment as viewed from the lower right rear side. Fig.16 This is an exploded perspective view of the feed motor 100 according to the present embodiment as viewed from the lower right front.

[0171] A sensor substrate 109 is mounted on the stator 101. The circuit substrate portion 109A of the sensor substrate 109 is provided with not only a magnetic sensor 110 but also an inverter circuit 313. The inverter circuit 313 is provided on the rear surface of the sensor substrate 109. The inverter circuit 313 includes 6 switching elements that control the supply of current to the U-phase coil, the V-phase coil, and the W-phase coil, respectively. The inverter circuit 313 is connected to the controller 300 (gate drive circuit 312) via a power cable 401 and a signal cable 402 connected to the sensor substrate 109. The inverter circuit 313 is connected to each coil 105 (U-phase coil, V-phase coil, W-phase coil) of the stator 101 from the sensor substrate 109 by wiring not shown in the figure. Therefore, in Fig.15 and Fig.16 In the example, the terminal 106 for supplying power to each coil 105 is not provided (see Figure 5 ).

[0172] Fig.17 This is an exploded perspective view of the twist motor 200 according to the present embodiment as viewed from the upper right front. Fig.18 This is an exploded perspective view of the twist motor 200 according to the present embodiment as viewed from the upper right rear.

[0173] A sensor substrate 209 is mounted on the stator 201. The circuit substrate portion 209A of the sensor substrate 209 is provided with not only a magnetic sensor 210 but also an inverter circuit 323. The inverter circuit 323 is provided on the front surface of the sensor substrate 209. The inverter circuit 323 includes 6 switching elements that control the supply of current to the U-phase coil, the V-phase coil, and the W-phase coil, respectively. The inverter circuit 323 is connected to the controller 300 (gate drive circuit 322) via a power cable 403 and a signal cable 404 connected to the sensor substrate 209. The inverter circuit 323 is connected to each coil 205 (U-phase coil, V-phase coil, W-phase coil) of the stator 201 from the sensor substrate 209 by wiring not shown in the figure. Therefore, in Fig.17 and Fig.18 In the example, the terminal 206 for supplying power to each coil 205 is not provided (see Figure 7 ).

[0174] Fig.19 Controller 300 of this embodiment is a front view. Controller 300 includes a first control circuit 310 for controlling feed motor 100 and a second control circuit 320 for controlling twisting motor 200. First control circuit 310 and second control circuit 320 are mounted on first surface 301A of circuit board 301, respectively.

[0175] The first control circuit 310 includes a microcomputer 311, a gate drive circuit 312, and a capacitor 314. In this embodiment, since the inverter circuit 313 is provided on the sensor substrate 109, the controller 300 (first control circuit 310) does not include the inverter circuit 313. The gate drive circuit 312 drives the inverter circuit 313 of the sensor substrate 109 via the signal cable 402.

[0176] The second control circuit 320 includes a microcomputer 321, a gate drive circuit 322, and a capacitor 324. In this embodiment, since the inverter circuit 323 is provided on the sensor substrate 209, the controller 300 (the second control circuit 320) does not include the inverter circuit 323. The gate drive circuit 322 drives the inverter circuit 323 of the sensor substrate 209 via the signal cable 404.

[0177] In the fifth embodiment, the sensor substrate 109 of the feed motor 100 (first brushless motor) is provided with the inverter circuit 313 for driving the motor, and the sensor substrate 209 of the twisted motor 200 (second brushless motor) is provided with the inverter circuit 323 for driving the motor, but the inverter circuit may be provided on only one of the sensor substrates. A part of the inverter circuit may also be provided on the controller 300.

[0178] As described above, the controller 300 is disposed on the handle portion 6. Thus, in the reinforcing bar tying machine 2, the controller 300 is disposed at an appropriate position.

[0179] In the embodiment, the feed motor 100 as the first brushless motor has a sensor substrate 109 as the first sensor substrate for detecting the rotation of the rotor 102. The sensor substrate 109 has an inverter circuit 313 for motor driving. Thus, the connection of the power cable 401 for supplying driving current to the feed motor 100 and the signal cable 402 for signal transmission can be integrated into the sensor substrate 109. There is no need to provide a terminal for connecting the power cable 401 on the feed motor 100. Since it is not easy to be restricted by the configuration associated with the wiring process, the freedom of configuration of the controller 300 is improved.

[0180] In the embodiment, the twisted motor 200 as the second brushless motor has a sensor substrate 209 as the second sensor substrate for detecting the rotation of the rotor 202. The sensor substrate 209 has an inverter circuit 323 for driving the motor. Thus, the connection of the power cable 403 for supplying the driving current to the twisted motor 200 and the signal cable 404 for signal transmission can be integrated into the sensor substrate 209. There is no need to provide a terminal for connecting the power cable 403 on the twisted motor 200. Since it is not easy to be restricted by the configuration associated with the wiring process, the freedom of configuration of the controller 300 is improved.

[0181] [Sixth embodiment]

[0182] In the following description, the same reference numerals are given to the same or equivalent components as those in the above-mentioned embodiment, and the description of the components is simplified or omitted.

[0183] Fig. 20 Schematic diagram of a configuration example of the controller 300 of this embodiment. Fig. 20 In the example shown, the controller 300 is arranged in the head 4. The controller 300 is arranged between the feed motor 100 and the twisting motor 200 in the up-down direction. The controller 300 is arranged in the head 4 in such a manner that the circuit board 301 extends in the front-back direction. The controller 300 is arranged in the head 4 in such a manner that the first surface 301A of the circuit board 301 on which the first control circuit 310 and the second control circuit 320 are mounted faces upward.

[0184] The sensor substrate 109 is arranged at a position behind the stator 101 of the feed motor 100. The first control circuit 310 including the gate drive circuit 312 for controlling the feed motor 100 is mounted on the front side of the circuit substrate 301. That is, the first control circuit 310 is arranged at a position on the sensor substrate 109 side of the circuit substrate 301. The sensor substrate 109 is arranged below the first control circuit 310. The sensor substrate 109 is provided with an inverter circuit 313 for controlling the feed motor 100. Therefore, the inverter circuit 313 is not provided in the first control circuit 310.

[0185] The sensor substrate 209 is arranged at a position in front of the stator 201 of the twisted motor 200. The second control circuit 320 including the gate drive circuit 322 for controlling the twisted motor 200 is mounted on the rear side of the circuit substrate 301. That is, the second control circuit 320 is arranged at a position close to the sensor substrate 209 in the circuit substrate 301. The sensor substrate 209 is arranged above the second control circuit 320. The sensor substrate 209 is provided with an inverter circuit 323 for controlling the twisted motor 200. Therefore, the inverter circuit 323 is not provided in the second control circuit 320.

[0186] The second surface 301B of the circuit substrate 301 is connected to the sensor substrate 109 by means of a power cable 401 and a signal cable 402. The sensor substrate 109 and the stator 101 are connected by means of wiring. The inverter circuit 313 is driven by the gate drive circuit 312, thereby supplying power from the power cable 401 to each coil 105 (U-phase coil, V-phase coil, W-phase coil) of the feed motor 100. The first surface 301A of the circuit substrate 301 is connected to the sensor substrate 209 by means of a power cable 403 and a signal cable 404. The sensor substrate 209 and the stator 201 are connected by means of wiring. The inverter circuit 323 is driven by the gate drive circuit 322, thereby supplying power from the power cable 403 to each coil 205 (U-phase coil, V-phase coil, W-phase coil) of the twisted motor 200.

[0187] As described above, the controller 300 is arranged between the feed motor 100 and the twisting motor 200 in the vertical direction. In addition, the inverter circuit 313 for controlling the feed motor 100 is provided on the sensor substrate 109. The inverter circuit 323 for controlling the twisting motor 200 is provided on the sensor substrate 209. In addition, the second surface 301B of the circuit substrate 301 and the sensor substrate 109 of the feed motor 100 are connected by the power cable 401 and the signal cable 402. The first surface 301A of the circuit substrate 301 and the sensor substrate 209 of the twisting motor 200 are connected by the power cable 403 and the signal cable 404. In addition, the first control circuit 310 for controlling the feed motor 100 is mounted at a position of the circuit substrate 301 close to the sensor substrate 109. The second control circuit 320 for controlling the twisting motor 200 is mounted at a position of the circuit substrate 301 close to the sensor substrate 209. Thus, the lengths of the power cable 401 , the signal cable 402 , the power cable 403 , and the signal cable 404 can be shortened.

[0188] [Seventh embodiment]

[0189] In the following description, the same reference numerals are given to the same or equivalent components as those in the above-mentioned embodiment, and the description of the components is simplified or omitted.

[0190] Fig.21 Schematic diagram of a configuration example of the controller 300 of this embodiment. Fig.21 In the example shown, the controller 300 is arranged in the head 4. The controller 300 is arranged between the feed motor 100 and the twisting motor 200 in the up-down direction. The controller 300 is arranged in the head 4 in such a manner that the circuit substrate 301 extends in the front-back direction. The first control circuit 310 is mounted on the second surface 301B of the circuit substrate 301, and the second control circuit 320 is mounted on the first surface 301A of the circuit substrate 301. The controller 300 is arranged in the head 4 in such a manner that the first surface 301A of the circuit substrate 301 faces the upward direction.

[0191] A sensor substrate 109 is disposed at a position behind the stator 101 of the feed motor 100. A first control circuit 310 including a gate drive circuit 312 for controlling the feed motor 100 is mounted on the front side of the circuit substrate 301. The first control circuit 310 is disposed at a position closer to the sensor substrate 109 than the second control circuit 320. The sensor substrate 109 is disposed below the first control circuit 310, and the sensor substrate 109 and the first control circuit 310 are arranged in an upper and lower direction. An inverter circuit 313 for controlling the feed motor 100 is provided on the sensor substrate 109. Therefore, the inverter circuit 313 is not provided on the first control circuit 310.

[0192] A sensor substrate 209 is disposed at a position in front of the stator 201 of the twisted motor 200. A second control circuit 320 including a gate drive circuit 322 for controlling the twisted motor 200 is mounted on the rear side of the circuit substrate 301. The second control circuit 320 is disposed at a position closer to the sensor substrate 209 than the first control circuit 310. The sensor substrate 209 is disposed above the second control circuit 320, and the sensor substrate 209 and the second control circuit 320 are arranged in an upper and lower direction. An inverter circuit 323 for controlling the twisted motor 200 is provided on the sensor substrate 209. Therefore, the inverter circuit 323 is not provided in the second control circuit 320.

[0193] The second surface 301B of the circuit board 301 and the sensor board 109 are connected via a power cable 401 and a signal cable 402. The first surface 301A of the circuit board 301 and the sensor board 209 are connected via a power cable 403 and a signal cable 404.

[0194] As described above, the controller 300 is arranged between the feed motor 100 and the twisting motor 200 in the vertical direction. In addition, the inverter circuit 313 for controlling the feed motor 100 is provided on the sensor substrate 109. The inverter circuit 323 for controlling the twisting motor 200 is provided on the sensor substrate 209. In addition, the second surface 301B of the circuit substrate 301 is connected to the sensor substrate 109 by the power cable 401 and the signal cable 402. The first surface 301A of the circuit substrate 301 and the sensor substrate 209 are connected by the power cable 403 and the signal cable 404. In addition, the first control circuit 310 for controlling the feed motor 100 is installed at a position closer to the sensor substrate 109 than the second control circuit 320. The second control circuit 320 for controlling the twisting motor 200 is installed at a position closer to the sensor substrate 209 than the first control circuit 310. Thus, the lengths of the power cable 401 , the signal cable 402 , the power cable 403 , and the signal cable 404 can be shortened.

[0195] [Eighth embodiment]

[0196] In the following description, the same reference numerals are given to the same or equivalent components as those in the above-mentioned embodiment, and the description of the components is simplified or omitted.

[0197] Fig. 22 Schematic diagram of a configuration example of the controller 3000 of this embodiment. Fig. 22 In the example shown, the controller 3000 is disposed on the grip portion 6. The circuit board 3010 of the controller 3000 has a holding portion 330 for holding the trigger 12. The trigger 12 is directly held by the circuit board 3010 of the controller 3000 via the holding portion 330. The controller 3000 is an integrated controller integrated with the trigger 12. In this embodiment, the signal cable 406 is omitted.

[0198] The feed motor 100 is provided with a sensor substrate 109. The sensor substrate 109 is provided with an inverter circuit 313 for controlling the feed motor 100. Therefore, the inverter circuit 313 is not provided in the first control circuit 310. The twisting motor 200 is provided with a sensor substrate 209. The sensor substrate 209 is provided with an inverter circuit 323 for controlling the twisting motor 200. Therefore, the inverter circuit 323 is not provided in the second control circuit 320.

[0199] The circuit substrate 3010 and the sensor substrate 109 are connected by a power cable 401 and a signal cable 402. The controller 3000 controls the driving of the feed motor 100 via the sensor substrate 109. The circuit substrate 3010 and the sensor substrate 209 are connected by a power cable 403 and a signal cable 404. The controller 3000 controls the driving of the twisting motor 200 via the sensor substrate 209.

[0200] As described above, the sensor substrate 109 is provided with the inverter circuit 313 for controlling the feed motor 100. The sensor substrate 209 is provided with the inverter circuit 323 for controlling the twist motor 200. Thus, by providing the inverter circuits 313 and 323 on the sensor substrates 109 and 209 for detecting the rotation of the rotor, the inverter circuits 313 and 323 can be omitted from the circuit substrate 3010 of the controller 3000. Since the configuration is not easily restricted by the wiring process, the degree of freedom of the configuration of the controller 300 is improved.

[0201] [Ninth embodiment]

[0202] A ninth embodiment will be described. In the following description, the same reference numerals are given to components that are the same as or equivalent to those in the above-described embodiment, and description of the components will be simplified or omitted.

[0203] Fig.23 3 is a diagram schematically showing an example of the arrangement of the controller 3001 of the present embodiment. The controller 3001 is arranged on the leg 8. The controller 3001 is arranged on the leg 8 in such a manner that the circuit substrate 3011 extends in the front-rear direction. The controller 3001 is arranged on the leg 8 in such a manner that the first surface 3011A of the circuit substrate 3011 on which the first control circuit 310 and the second control circuit 320 are mounted faces upward.

[0204] The feed motor 100 is provided with a sensor substrate 109. The sensor substrate 109 is provided with an inverter circuit 313 for controlling the feed motor 100. Therefore, the inverter circuit 313 is not provided in the first control circuit 310. The twisting motor 200 is provided with a sensor substrate 209. The sensor substrate 209 is provided with an inverter circuit 323 for controlling the twisting motor 200. Therefore, the inverter circuit 323 is not provided in the second control circuit 320.

[0205] The circuit board 3011 and the sensor board 109 are connected by a power cable 401 and a signal cable 402. The controller 3001 controls the driving of the feed motor 100 via the sensor board 109. The circuit board 3011 and the sensor board 209 are connected by a power cable 403 and a signal cable 404. The controller 3001 controls the driving of the twisting motor 200 via the sensor board 209. In addition, the controller 3001 is connected to the trigger 12 by a signal cable 406, connected to the first operation display unit 24 by a signal cable 407, and connected to the second operation display unit 34 by a signal cable 408.

[0206] In the ninth embodiment, the controller 3001 includes a circuit substrate 3011, a controller housing 3020 that houses the circuit substrate 3011, and a terminal 3030 that connects the battery 10 and the circuit substrate 3011. In the ninth embodiment, the controller 3001 (circuit substrate 3011) is directly connected to the battery 10 using the terminal 3030. Therefore, in this embodiment, the power supply cable 405 is omitted.

[0207] The controller housing 3020 has a flat disk or tray shape with a concave upper surface. The controller housing 3020 accommodates the circuit substrate 3011 inside the concave portion. The controller housing 3020 is accommodated in the housing 16. The lower surface of the controller housing 3020 constitutes a part of the connection surface of the leg 8 connected to the battery 10. The terminal 3030 is provided on the second surface 3011B of the circuit substrate 3011. The lower surface of the controller housing 3020 exposes a part of the terminal 3030 so that it can be connected to the terminal of the battery 10. A guide 3040 may be formed on the lower surface of the controller housing 3020. The guide 3040 partially covers the terminal 3030 so that it is not affected by the outside, and the guide 3040 guides the battery 10 when the terminal of the battery 10 is connected to the terminal 3030. In the connected state of the battery 10 , the lower surface of the controller housing 3020 , the terminal 3030 , and the guide 3040 are covered by the housing of the battery 10 and are not exposed to the outside.

[0208] As described above, in the embodiment, the reinforcing bar binding machine 2 includes: a feeding motor 100, which is a first brushless motor, and the feeding motor 100 feeds the metal wire wound on the reel; a twisting motor 200, which is a second brushless motor, and the twisting motor 200 twists the metal wire; a head 4, and the twisting motor 200 is arranged on the head 4; a handle 6, which extends downward from the head 4; a foot 8, which is arranged below the handle 6, and the battery 10 is connected to the foot 8; a connecting part 26, and a connecting part 26 is arranged on the head 4. Placed in front of the handle portion 6, the connecting portion 26 connects the head 4 and the foot 8, and the reel 33 and the feeding motor 100 are arranged on the connecting portion 26; and the controller 3001, which controls the feeding motor 100 and the twisting motor 200, is arranged on the foot 8, and the controller 3001 has a circuit substrate 3011, a controller housing 3020 for storing the circuit substrate 3011, and a terminal 3030 for connecting the battery 10 and the circuit substrate 3011.

[0209] In the above-mentioned structure, the controller 3001 is arranged at an appropriate position in the reinforcing bar binding machine 2. The power supply cable 405 can be omitted, and the structure inside the device can be simplified.

[0210] [10th embodiment]

[0211] In the following description, the same reference numerals are given to the same or equivalent components as those in the above-mentioned embodiment, and the description of the components is simplified or omitted.

[0212] Fig.24 3 is a diagram schematically showing an example of the configuration of the controller 300 of this embodiment. In the tenth embodiment, a wireless communication unit 500, a heat sink (315, 325) and a noise removal member 510 are further provided in addition to the configuration shown in the first embodiment.

[0213] The wireless communication unit 500 is provided in the handle portion 6. The wireless communication unit 500 is arranged in the handle portion 6 so as to overlap with the circuit substrate 301 of the controller 300 in the left-right direction. The wireless communication unit 500 is arranged on the left side of the circuit substrate 301 in the handle portion 6. The wireless communication unit 500 is arranged between the circuit substrate 301 and the left housing 20. The wireless communication unit 500 may also be arranged on the right side of the circuit substrate 301 in the handle portion 6. For example, the wireless communication unit 500 may be arranged between the circuit substrate 301 and the right housing 18.

[0214] Alternatively, the wireless communication unit 500 can be detachably mounted relative to the housing 16. For example, a structure may be as follows: an assembly port for mounting the wireless communication unit 500 is formed on the outer surface of the left housing 20 (or the outer surface of the right housing 18), and the wireless communication unit 500 is mounted in the assembly port from the outside of the housing 16. In the case of this structure, the wireless communication unit 500 is electrically connected to the controller 300 by being mounted in the assembly port. In addition, the wireless communication unit 500 may also be provided in the head 4, the foot 8, or the battery 10.

[0215] exist Fig.24 In the embodiment, the wireless communication unit 500 may be connected to the controller 300 by wire, or may be directly mounted on the circuit board 301. The controller 300 supplies power from the battery 10 to the wireless communication unit 500. The controller 300 communicates with an external device via the wireless communication unit 500.

[0216] The wireless communication unit 500 has an interface circuit for wireless communication. The method of wireless communication is not particularly limited. The wireless communication unit 500 communicates, for example, through short-range wireless communication such as Bluetooth (registered trademark), WLAN communication such as Wi-Fi (registered trademark), microwaves, infrared rays (optical signals), mobile communication systems such as the so-called 5G, etc. The wireless communication unit 500 can communicate with other communication terminals, such as computers, mobile devices, cloud servers, other electric tools such as rebar tying machines, external battery cells, etc. through wireless communication. As an example, the wireless communication unit 500 communicates with a terminal (tablet-type terminal, PC, etc.) for managing electric tools owned by a user including the rebar tying machine 2.

[0217] The controller 300 can transmit information of the reinforcing bar bundling machine 2 via the wireless communication unit 500. The information of the reinforcing bar bundling machine 2 may include information such as the remaining power of the battery 10, the voltage value, and the current value. The information of the reinforcing bar bundling machine 2 may include information or log data of each motor of the reinforcing bar bundling machine 2. The information of each motor may include motor speed, torque, rotation direction, etc. The information of the reinforcing bar bundling machine 2 may include the current setting content (operation mode, etc.) of the reinforcing bar bundling machine 2. The information of the reinforcing bar bundling machine 2 may include, for example, the cumulative value of the number of times the reinforcing bar is bundled or the remaining amount of the metal wire wound on the drum 33 (the remaining number of bundles). In this case, the controller 300 can count the number of times the reinforcing bar is bundled from the driving information of the feeding motor 1000 and subtract the count value from the initial value of the number of bundles set on the drum 33 to calculate the remaining number of bundles. The controller 300 may periodically transmit the information of the reinforcing bar bundling machine 2 to the set destination, or transmit the information of the reinforcing bar bundling machine 2 in response to a request from the destination. The controller 300 may receive a control signal via the wireless communication unit 500. The control signal may include information instructing to switch the power on / off of the reinforcing bar tying machine 2, information instructing to change the operation mode, etc. The controller 300 controls each part of the reinforcing bar tying machine 2 according to the received control signal.

[0218] Fig.25 : is a perspective schematic diagram showing the controller 300 of the present embodiment. The controller 300 includes a circuit substrate 301 having an inverter circuit (313, 323) for driving a motor and a heat sink (315, 325) thermally connected to the inverter circuit. That is, the circuit substrate 301 includes a heat sink 315 thermally connected to the inverter circuit 313 of the first control circuit 310. The heat sink 315 is in contact with the surface of the switching element constituting the inverter circuit 313 via a heat conductive material. The heat conductive material is a heat conductive grease, a heat conductive adhesive, etc., and fills the gap between the surface of the heat sink 315 and the surface of the switching element. The heat sink 315 includes a main body having a heat transfer surface in contact with a heat absorbing object such as a switching element and a plurality of fins 315A standing from the main body. The fins 315A have a plate shape, a pin shape, a lattice shape, etc., so that the heat dissipation area of ​​the heat sink 315 is increased. The heat sink 315 is made of a high heat conductive material such as an aluminum material (aluminum or aluminum alloy). One heat sink 315 may be provided for one switching element or one heat sink 315 may be provided for a plurality of switching elements. The inverter circuit 313 may include, for example, one or two power modules in which a plurality of switching elements are packaged. In this case, a heat sink 315 may be provided for each power module.

[0219] The circuit substrate 301 includes a heat sink 325 thermally connected to the inverter circuit 323 of the second control circuit 320. The heat sink 325 is in contact with the surface of the switching element constituting the inverter circuit 323 via a heat conductive material. The heat conductive material is a heat conductive grease, a heat conductive adhesive, etc., which fills the gap between the surface of the heat sink 325 and the surface of the switching element. The heat sink 325 includes a main body having a heat transfer surface in contact with a heat absorbing object such as a switching element and a plurality of fins 325A rising from the main body. The fins 325A have a plate-like, pin-like, lattice-like shape, etc., so that the heat dissipation area of ​​the heat sink 325 is increased. The heat sink 325 is made of a high thermal conductive material such as aluminum (aluminum or aluminum alloy). One heat sink 325 can be provided for one switching element, or one heat sink 325 can be provided for multiple switching elements. The inverter circuit 323 can, for example, contain one or two power modules encapsulating multiple switching elements. In this case, a heat sink 325 may be provided for each power module.

[0220] The reinforcing bar binding machine 2 has a noise removing member 510 for removing electromagnetic noise on the power line connecting at least one of the feed motor 1000 (first brushless motor) and the twisting motor 2000 (second brushless motor) to the controller 300. The noise removing member 510 is provided in common with respect to a plurality of power lines. The noise removing member 510 is a plate-shaped member having a plurality of through holes 511 formed therein for the power lines to pass through. One power line is passed through each through hole 511. Fig.25 In the figure, the noise removing member 510 is an elliptical flat plate having three through holes 511 penetrating in the thickness direction. The three through holes 511 are arranged linearly along the long axis direction of the noise removing member 510 in a plan view. The noise removing member 510 is made of a ferromagnetic body. The noise removing member 510 is, for example, a permanent magnet.

[0221] exist Fig.25 In the embodiment, two noise removing members 510 are provided. The first noise removing member 510 is provided on the power cable 401 that supplies power to the feeding motor 1000. The three power lines (the power lines of the U phase, the V phase, and the W phase) included in the power cable 401 are respectively passed through the three through holes 511 of the first noise removing member 510. The second noise removing member 510 is provided on the power cable 403 that supplies power to the twisting motor 2000. The three power lines (the power lines of the U phase, the V phase, and the W phase) included in the power cable 403 are respectively passed through the three through holes 511 of the second noise removing member 510.

[0222] Fig.26 This is an exploded perspective view of the feed motor 1000 according to the present embodiment as viewed from the lower right rear side. Fig. 27 This is an exploded perspective view of the feed motor 1000 of this embodiment as viewed from the lower right front. Figure 4 , Figure 5 ) shows a feed motor 100 as an IPM (Interior Permanent Magnet) motor, in which a rotor magnet 108 of the feed motor 100 is arranged in a magnet hole provided in a rotor core 107. Fig.26 , Fig. 27 In the illustrated example, the feed motor 1000 is an SPM (Surface Permanent Magnet) motor in which a rotor magnet 1080 is disposed on the outer peripheral surface of a rotor core 1070 .

[0223] The rotor 1020 of the feed motor 1000 has a rotor core 1070, a rotor magnet 1080 and a retaining tube 1021. The rotor magnet 1080 is fixed to the rotor core 1070. The rotor magnet 1080 is arranged on the outer peripheral surface of the rotor core 1070. The rotor magnet 1080 is bent along the outer peripheral surface of the rotor core 1070. The rotor magnet 1080 is fixed to the outer peripheral surface of the rotor core 1070 by bonding or the like. In the present embodiment, four rotor magnets 1080 are arranged in the circumferential direction of the rotor core 1070. The number of poles of the feed motor 1000 is 4. The number of rotor magnets 1080 is not particularly limited and may be a number other than 4. The retaining tube 1021 has a cylindrical shape. The retaining tube 1021 surrounds the outer circumference of each rotor magnet 1080. The inner peripheral surface of the holding tube 1021 presses the outer surface of each rotor magnet 1080 toward the rotor core 1070 (radial center side). The holding tube 1021 prevents the rotor magnet 1080 from being separated from the rotor core 1070. The holding tube 1021 is made of steel material, resin material, or the like.

[0224] Fig.28 This is an exploded perspective view of the twist motor 2000 according to the present embodiment as viewed from the lower right rear side. Fig.29 This is an exploded perspective view of the twist motor 2000 of this embodiment as viewed from the lower right front. Figure 6 , Figure 7 ), a twisted motor 200 is shown as an IPM motor, but Fig.28 , Fig.29 In the illustrated example, the twisted-coil motor 2000 is an SPM motor in which a rotor magnet 2080 is arranged on the outer peripheral surface of a rotor core 2070 .

[0225] The rotor 2020 of the twisted motor 2000 has a rotor core 2070, a rotor magnet 2080 and a retaining tube 2021. The rotor magnet 2080 is fixed to the rotor core 2070. The rotor magnet 2080 is arranged on the outer peripheral surface of the rotor core 2070. The rotor magnet 2080 is bent along the outer peripheral surface of the rotor core 2070. The rotor magnet 2080 is fixed to the outer peripheral surface of the rotor core 2070 by bonding or the like. In the present embodiment, four rotor magnets 2080 are arranged in the circumferential direction of the rotor core 2070. The number of poles of the twisted motor 2000 is 4. The number of rotor magnets 2080 is not particularly limited, and may be a number other than 4. The retaining tube 2021 has a cylindrical shape. The retaining tube 2021 surrounds the outer periphery of each rotor magnet 2080. The inner peripheral surface of the retaining tube 2021 presses the outer surface of each rotor magnet 2080 toward the rotor core 2070 side. The holding pipe 2021 prevents the rotor magnet 2080 from being separated from the rotor core 2070. The holding pipe 2021 is made of a steel material, a resin material, or the like.

[0226] In the second to ninth embodiments described above, a motor may be provided instead of the feed motor 100 and the twist motor 200. Figure 26 to Figure 29 The feeding motor 1000 and the twisting motor 2000 are provided.

[0227] As described above, in the embodiment, the controller 300 includes the circuit board 301 including the inverter circuit 313 for driving the feed motor 1000 as the first brushless motor and the heat sink 315 thermally connected to the inverter circuit 313 .

[0228] In the above-described structure, it is possible to suppress a temperature increase in the controller 300 .

[0229] In the embodiment, the controller 300 includes a circuit board 301 including an inverter circuit 323 for driving the twisted motor 2000 as the second brushless motor and a heat sink 325 thermally connected to the inverter circuit 323 .

[0230] In the above-described structure, it is possible to suppress a temperature increase in the controller 300 .

[0231] In the embodiment, the reinforcing bar tying machine 2 further includes a wireless communication unit 500 provided on the handle portion 6 .

[0232] In the above structure, the wireless communication unit 500 and the controller 300 are arranged in an appropriate positional relationship.

[0233] In the embodiment, the reinforcing bar tying machine 2 has a noise removing member 510 for removing electromagnetic noise on the power line of the power cable 401 connecting the feed motor 1000 as the first brushless motor and the controller 300. The reinforcing bar tying machine 2 has a noise removing member 510 for removing electromagnetic noise on the power line of the power cable 403 connecting the twisting motor 2000 as the second brushless motor and the controller 300.

[0234] In the above-described structure, the influence of electromagnetic noise can be suppressed by arranging the brushless motor (feed motor 1000, twist motor 2000) and the controller 300 in an appropriate positional relationship.

[0235] [11th embodiment]

[0236] In the following description, the same reference numerals are given to the same or equivalent components as those in the above-mentioned embodiment, and the description of the components is simplified or omitted.

[0237] Fig.30 3 is a diagram schematically showing an example of the configuration of the controller 300 of this embodiment. In the eleventh embodiment, a wireless communication unit 500, a heat sink (315, 325) and a noise removal member 510 are further provided in addition to the configuration shown in the second embodiment.

[0238] The controller 300 is disposed in the head 4. The controller 300 is disposed between the feed motor 100 and the twisting motor 200 in the up-down direction. The controller 300 is disposed in the head 4 in such a manner that the circuit substrate 301 extends in the front-back direction. The controller 300 is disposed in the head 4 in such a manner that the first surface 301A of the circuit substrate 301 on which the first control circuit 310 and the second control circuit 320 are mounted faces upward.

[0239] The first control circuit 310 is mounted on the front side of the circuit substrate 301. A heat sink 315 is provided on the inverter circuit 313 of the first control circuit 310. The heat sink 315 is in contact with the surface of the switching element constituting the inverter circuit 313 via a heat conductive material. The second control circuit 320 is mounted on the rear side of the circuit substrate 301. A heat sink 325 is provided on the inverter circuit 323 of the second control circuit 320. The heat sink 325 is in contact with the surface of the switching element constituting the inverter circuit 323 via a heat conductive material. Therefore, the heat sinks 315 and 325 are provided on the first surface 301A side of the circuit substrate 301.

[0240] The wireless communication unit 500 is disposed on the handle portion 6. The wireless communication unit 500 is connected to the controller 300 by wire. The wireless communication unit 500 is connected to the second surface 301B of the circuit substrate 301 by wire using the connection cable 409. The connection cable 409 includes a signal line and a power line. The controller 300 supplies power from the battery 10 to the wireless communication unit 500 via the connection cable 409. The controller 300 exchanges signals with the wireless communication unit 500 via the connection cable 409.

[0241] The second surface 301B of the circuit board 301 and the feed motor 100 are connected by the power cable 401. The first noise removal member 510 is provided on the power cable 401 for supplying power to the feed motor 100. The first noise removal member 510 is arranged between the second surface 301B of the circuit board 301 and the feed motor 100. The three power lines (U-phase, V-phase, and W-phase power lines) included in the power cable 401 are respectively passed through the three through holes 511 (see FIG. 5 ) of the first noise removal member 510. Fig.25 ). The first surface 301A of the circuit substrate 301 and the twisted motor 200 are connected by a power cable 403. The second noise removal member 510 is provided on the power cable 403 for supplying power to the twisted motor 200. The second noise removal member 510 is arranged between the first surface 301A of the circuit substrate 301 and the twisted motor 200. The three power lines (U-phase, V-phase, and W-phase power lines) included in the power cable 403 are respectively passed through the three through holes 511 (see Fig.25 ).

[0242] In the third embodiment described above, the wireless communication unit 500 , the heat sinks 315 and 325 , and the noise removing member 510 may be provided.

[0243] [12th embodiment]

[0244] In the following description, the same reference numerals are given to the same or equivalent components as those in the above-mentioned embodiment, and the description of the components is simplified or omitted.

[0245] Fig.31 3 is a diagram schematically showing an example of the configuration of the controller 3001 of this embodiment. In the twelfth embodiment, a wireless communication unit 500, heat sinks 315, 325, and a noise removal member 510 are further provided in addition to the configuration shown in the ninth embodiment.

[0246] The controller 3001 is disposed on the leg 8. The controller 3001 is disposed on the leg 8 such that the circuit board 3011 extends in the front-rear direction. The controller 3001 is disposed on the leg 8 such that the first surface 3011A of the circuit board 3011 on which the first control circuit 310 and the second control circuit 320 are mounted faces upward.

[0247] The feed motor 100 is provided with a sensor substrate 109. The sensor substrate 109 is provided with an inverter circuit 313 for controlling the feed motor 100. Therefore, the inverter circuit 313 is not provided in the first control circuit 310. The inverter circuit 313 of the sensor substrate 109 is provided with a heat sink 315. The heat sink 315 is in contact with the surface of the switching element constituting the inverter circuit 313 via a heat conductive material.

[0248] The twist motor 200 is provided with a sensor substrate 209. The sensor substrate 209 is provided with an inverter circuit 323 for controlling the twist motor 200. Therefore, the inverter circuit 323 is not provided in the second control circuit 320. The inverter circuit 323 of the sensor substrate 209 is provided with a heat sink 325. The heat sink 325 is in contact with the surface of the switching element constituting the inverter circuit 323 via a heat conductive material.

[0249] The wireless communication unit 500 is disposed on the handle portion 6 . The wireless communication unit 500 is connected to the controller 300 via a connection cable 409 .

[0250] The circuit substrate 3011 and the sensor substrate 109 are connected by the power cable 401 and the signal cable 402. The first noise removing member 510 is provided on the power cable 401. The first noise removing member 510 is arranged between the circuit substrate 3011 and the sensor substrate 109. The three power lines (U-phase, V-phase, and W-phase power lines) included in the power cable 401 are respectively passed through the three through holes 511 (see FIG. 4 ) of the first noise removing member 510. Fig.25 ). The circuit substrate 3011 and the sensor substrate 209 are connected by the power cable 403 and the signal cable 404. The second noise removal member 510 is provided on the power cable 403. The second noise removal member 510 is arranged between the circuit substrate 3011 and the sensor substrate 209. The three power lines (U-phase, V-phase, and W-phase power lines) included in the power cable 403 are respectively passed through the three through holes 511 of the second noise removal member 510 (refer to Fig.25 ).

[0251] Description of Reference Numerals

[0252] 2. Steel bar tying machine; 4. Head; 6. Handle; 8. Foot; 10. Battery; 12. Trigger; 16. Housing; 18. Right housing; 20. Left housing; 22. Motor cover; 24. First operation display; 26. Connecting part; 28. Cover member; 32. Locking lever; 33. Reel; 34. Second operation display; 38. Wire feeding mechanism; 40. Wire guiding mechanism; 42. Steel bar contact mechanism; 44. Wire cutting mechanism; 46. Wire twisting mechanism; 48. Steel bar pressing mechanism; 58. Contact plate; 60. Contact plate; 118. Contact arm; 100. Feed motor (first brushless motor); 101. Stator; 10 2. rotor; 103. rotor shaft; 104. stator core; 105. coil; 106. terminal; 107. rotor core; 108. rotor magnet; 109. sensor substrate; 109A. circuit substrate; 109B. support; 110. magnetic sensor; 111. fan; 112. insulator; 113. balance correction plate; 114. output pinion; 200. twisted motor (second brushless motor); 201. stator; 202. rotor; 203. rotor shaft; 204. stator core; 205. coil; 206; terminal; 207. rotor core; 208. rotor magnet; 209. sensor substrate; 209A. circuit substrate; 2 09B, support part; 210, magnetic sensor; 211, fan; 212, insulator; 213, balance correction plate; 214, output pinion; 300, controller; 301, circuit board; 301A, first surface; 301B, second surface; 310, first control circuit; 311, microcomputer; 312, gate drive circuit; 313, inverter circuit; 314, capacitor; 320, second control circuit; 321, microcomputer; 322, gate drive circuit; 323, inverter circuit; 324, capacitor; 330, holding part; 401, power cable; 402, signal cable; 403, power cable; 404, signal Cable; 405, power supply cable; 406, signal cable; 407, signal cable; 408, signal cable; 409, connecting cable; 1000, feed motor; 1020, rotor; 1021, retaining tube; 1070, rotor core; 1080, rotor magnet; 2000, twisted motor; 2020, rotor; 2021, retaining tube; 2070, rotor core; 2080, rotor magnet; 3000, controller; 3001, controller; 3010, circuit substrate; 3011, circuit substrate; 3011A, first surface; 3011B, second surface; 3020, controller housing; 3030, terminal; 3040, guide.

Claims

1. A steel bar bundling machine, wherein: The steel bar tying machine has: a first brushless motor for conveying the wire wound on the drum; a second brushless motor for twisting the metal wires; a head portion, on which the second brushless motor is disposed; a handle portion extending downward from the head portion; A foot portion, which is disposed below the handle portion and to which a battery is connected; a connecting portion, which is arranged in front of the handle portion and connects the head portion and the foot portion, and the reel and the first brushless motor are arranged in the connecting portion; and a controller that controls the first brushless motor and the second brushless motor, The controller is configured on the handle portion.

2. The steel bar bundling machine according to claim 1, wherein: A first cable connecting the first brushless motor and the controller passes through the head.

3. The steel bar bundling machine according to claim 1, wherein: The reinforcing bar binding machine includes an operation display unit disposed on the head portion, and the operation display unit and the controller are connected by a second cable.

4. The steel bar bundling machine according to claim 1, wherein: The first brushless motor includes a first stator and a first rotor disposed around the first stator. The first brushless motor is arranged such that the rotation axis of the first rotor extends in the front-rear direction. A first terminal for connecting the plurality of coils of the first stator is disposed on an upper portion of the first stator. A first sensor substrate for detecting the rotation of the first rotor is arranged at a rearward position relative to the first stator. The first terminal and the controller are connected by a first power cable. The first sensor substrate and the controller are connected by a first signal cable.

5. The steel bar bundling machine according to claim 1, wherein: The second brushless motor includes a second stator and a second rotor disposed around the second stator. The second brushless motor is arranged so that the rotation axis of the second rotor extends in the front-rear direction. A second terminal for connecting the plurality of coils of the second stator is disposed at a lower portion of the second stator. A second sensor substrate for detecting the rotation of the second rotor is arranged in front of the second stator. The second terminal and the controller are connected by a second power cable. The second sensor substrate and the controller are connected via a second signal cable.

6. A steel bar bundling machine, wherein: The steel bar tying machine has: a first brushless motor for conveying the wire wound on the drum; a second brushless motor for twisting the metal wires; a head portion, on which the second brushless motor is disposed; a handle portion extending downward from the head portion; A foot portion, which is disposed below the handle portion and to which a battery is connected; a connecting portion, which is arranged in front of the handle portion and connects the head portion and the foot portion, and the reel and the first brushless motor are arranged in the connecting portion; and a controller that controls the first brushless motor and the second brushless motor, The controller is disposed between the first brushless motor and the second brushless motor in a vertical direction.

7. The steel bar bundling machine according to claim 6, wherein: The first brushless motor and the controller are connected by a first cable, and the first cable is connected to a lower surface of a circuit board of the controller.

8. The steel bar bundling machine according to claim 6, wherein: The reinforcing bar binding machine includes an operation display unit disposed on the head portion, the operation display unit and the controller are connected by a second cable, and the second cable is connected to an upper surface of a circuit board of the controller.

9. The steel bar bundling machine according to claim 6, wherein: The first brushless motor includes a first stator and a first rotor disposed around the first stator. The first brushless motor is arranged such that the rotation axis of the first rotor extends in the front-rear direction. A first terminal for connecting the plurality of coils of the first stator is disposed on an upper portion of the first stator. A first sensor substrate for detecting the rotation of the first rotor is arranged at a rearward position relative to the first stator. The first terminal and the controller are connected by a first power cable. The first sensor substrate and the controller are connected by a first signal cable.

10. The steel bar bundling machine according to claim 6, wherein: The second brushless motor includes a second stator and a second rotor disposed around the second stator. The second brushless motor is arranged so that the rotation axis of the second rotor extends in the front-rear direction. A second terminal for connecting the plurality of coils of the second stator is disposed at a lower portion of the second stator. A second sensor substrate for detecting the rotation of the second rotor is arranged in front of the second stator. The second terminal and the controller are connected by a second power cable. The second sensor substrate and the controller are connected via a second signal cable.

11. A steel bar bundling machine, wherein: The steel bar tying machine has: a first brushless motor for conveying the wire wound on the drum; a second brushless motor for twisting the metal wires; a head portion, on which the second brushless motor is disposed; a handle portion extending downward from the head portion; A foot portion, which is disposed below the handle portion and to which a battery is connected; a connecting portion, which is arranged in front of the handle portion and connects the head portion and the foot portion, and the reel and the first brushless motor are arranged in the connecting portion; and a controller including a circuit board, the controller controlling the first brushless motor and the second brushless motor, The second surface of the circuit substrate and the first brushless motor are connected by a cable. The first surface of the circuit board and the second brushless motor are connected by a cable.

12. The steel bar bundling machine according to claim 11, wherein: The controller is configured on the head.

13. The steel bar bundling machine according to claim 11, wherein: The reinforcing steel bar binding machine includes an operation display unit arranged on the head. The first surface of the circuit board and the operation display unit are connected by a cable.

14. The steel bar bundling machine according to claim 11, wherein: The first brushless motor includes a first stator and a first rotor disposed around the first stator. The first brushless motor is arranged such that the rotation axis of the first rotor extends in the front-rear direction. A first terminal for connecting the plurality of coils of the first stator is disposed on an upper portion of the first stator. A first sensor substrate for detecting the rotation of the first rotor is arranged at a rearward position relative to the first stator. The first terminal and the controller are connected by a first power cable. The first sensor substrate and the controller are connected by a first signal cable.

15. The steel bar bundling machine according to claim 11, wherein: The second brushless motor includes a second stator and a second rotor disposed around the second stator. The second brushless motor is arranged so that the rotation axis of the second rotor extends in the front-rear direction. A second terminal for connecting the plurality of coils of the second stator is disposed at a lower portion of the second stator. A second sensor substrate for detecting the rotation of the second rotor is arranged in front of the second stator. The second terminal and the controller are connected by a second power cable. The second sensor substrate and the controller are connected via a second signal cable.

16. The steel bar bundling machine according to claim 1, 6 or 11, wherein: At least one of the first brushless motor and the second brushless motor includes a sensor substrate for detecting rotation of a rotor. The sensor substrate includes an inverter circuit for driving a motor.

17. The steel bar tying machine according to claim 1, 6 or 11, wherein: The controller includes a circuit board having an inverter circuit for driving a motor and a heat sink thermally connected to the inverter circuit.

18. The steel bar tying machine according to claim 1, 6 or 11, wherein: The reinforcing bar binding machine further includes a wireless communication unit provided on the handle portion.

19. The steel bar tying machine according to claim 1, 6 or 11, wherein: A noise removing member for removing electromagnetic noise is provided on a power line connecting at least one of the first brushless motor and the second brushless motor and the controller.

20. A steel bar bundling machine, wherein: The steel bar tying machine has: a first brushless motor for conveying the wire wound on the drum; a second brushless motor for twisting the metal wires; a head portion, on which the second brushless motor is disposed; a handle portion extending downward from the head portion; A foot portion, which is disposed below the handle portion and to which a battery is connected; a connecting portion, which is arranged in front of the handle portion and connects the head portion and the foot portion, and the reel and the first brushless motor are arranged in the connecting portion; and a controller that controls the first brushless motor and the second brushless motor, The controller is arranged on the foot. The controller includes a circuit substrate, a controller case that houses the circuit substrate, and a terminal that connects the battery and the circuit substrate.

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