End machine

Abstract

The present invention provides a binding machine that allows for forced cooling, suppresses an increase in dimensions in the front-to-back direction, and prevents the intrusion of dust, moisture, etc., through the exhaust port. [Solution] The rebar tying machine 1A comprises a main body 10A, a wire feeding unit 3A for feeding wire W, a curl forming unit 5A that forms a path for winding the wire W fed by the wire feeding unit 3A around the rebar S, a tying unit 7A driven by a motor 80 for twisting the wire W wound around the rebar S, a fan 15A that generates airflow through the inside of the main body 10A, and a second air intake port 17Ab into which outside air is drawn into the inside of the main body 10A. The second air intake port 17Ab is formed in the gap between the trigger 12A and the power switch 19b, which are movable members that are exposed to the outside from the main body 10A and move relative to the main body 10A.

Description

Technical Field

[0001] The present invention relates to a tying machine for tying bundles such as reinforcing bars with a wire.

Background Art

[0002] Reinforcing bars are used in concrete structures to improve strength, and they are tied with a wire so that the reinforcing bars do not shift from their predetermined positions during concrete placement.

[0003] Conventionally, a tying machine called a reinforcing bar tying machine has been proposed, in which a wire is wound around two or more reinforcing bars, and the wire wound around the reinforcing bars is twisted to tie the two or more reinforcing bars with the wire.

[0004] The reinforcing bar tying machine includes a tying wire feeding mechanism for feeding a tying wire such as a wire, and a tying wire twisting and torsion mechanism for twisting the tying wire. The tying wire feeding mechanism and the tying wire twisting and torsion mechanism are driven by a motor. However, when the motor is driven, the temperature of the motor rises, and when the temperature of the motor rises, the temperature inside the housing rises. In order to increase the tying strength, if the wire diameter of the wire is increased, a high output of the motor for twisting the wire is required. Further, in a reinforcing bar tying machine configured to feed the wire in the reverse direction and wind it around the reinforcing bar, a high output of the motor for feeding the wire is required. A high-output motor generates a large amount of heat, so it is necessary to cool the inside of the housing. Furthermore, in continuous operation, since the time during which the motor stops is short, the temperature of the motor is difficult to decrease.

[0005] Therefore, a reinforcing bar tying machine has been proposed in which a cooling fan and an exhaust slit are arranged at the rear end of the housing as a cooling means inside the housing (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0007] However, in a rebar tying machine with a cooling fan and exhaust vents located at the rear of the casing, the front-to-back dimension of the casing along the axial direction of the torsion axis increases. In a configuration with a handle, the shape in which the casing extends rearward from the handle leads to a deterioration in usability. Also, in the usage configuration of a rebar tying machine, the exhaust vents face upward, making it easy for dust and moisture to enter the casing through the exhaust vents.

[0008] This invention was made to solve these problems, and aims to provide a binding machine that can perform forced cooling while suppressing an increase in dimensions in the front-to-back direction. [Means for solving the problem]

[0009] To solve the above-mentioned problems, the present invention provides a binding machine comprising: a main body; a wire feeding unit for feeding wire; a curling unit that forms a path for winding the wire fed by the wire feeding unit around the object to be bound; a binding unit driven by a drive unit for twisting the wire wound around the object to be bound; a blower that generates an airflow through the inside of the main body; and a second air intake port into which outside air is drawn into the inside of the main body, wherein the second air intake port is exposed to the outside from the main body and is formed in the gap between the main body and a movable member that moves relative to the main body.

[0010] In this invention, when the blower is driven, a flow of air is generated that passes through the inside of the main body and is exhausted to the outside. [Effects of the Invention]

[0011] According to the present invention, air is drawn into the main body from the outside, and the air that has become hotter inside the main body is exhausted to the outside, thereby suppressing the rise in temperature inside the main body. Therefore, the temperature rise of the motor and other components can be suppressed. In addition, by not providing a blower on the rear surface of the main body, it is possible to suppress an increase in the dimensions of the main body along the axial direction of the rotating shaft. Furthermore, according to the present invention, even when the handle is gripped and one side of the rotating shaft of the rebar tying machine is facing downwards or sideways, the exhaust port does not face upwards. This prevents moisture such as rainwater and debris from entering the housing through the exhaust port. [Brief explanation of the drawing]

[0012] [Figure 1A] This is a partially exploded side view, seen from one side, showing an example of the overall configuration of the rebar tying machine according to the first embodiment. [Figure 1B] This is a rear cross-sectional view showing an example of the main components of a rebar tying machine according to the first embodiment. [Figure 2A] This is a perspective view of one side of a rebar tying machine, taken from below, showing an example of the overall configuration of the first embodiment. [Figure 2B] This is an external side view from the other side, showing an example of the overall configuration of the rebar tying machine according to the first embodiment. [Figure 3A] This is an internal configuration diagram viewed from the other side, showing an example of the overall configuration of the rebar tying machine according to the first embodiment. [Figure 3B] This is an internal configuration diagram viewed from the other side, showing an example of the overall configuration of the rebar tying machine according to the first embodiment. [Figure 4A] This is a side view showing the main components of a rebar tying machine according to the first embodiment. [Figure 4B] This is a top view showing the main components of a rebar tying machine according to the first embodiment. [Figure 4C] This is a top cross-sectional view showing the main components of the rebar tying machine according to the first embodiment. [Figure 5A] This is an internal diagram viewed from the other side, showing an example of the overall configuration of the rebar tying machine according to the second embodiment. [Figure 5B]It is an external perspective view seen from the other side showing an example of the overall configuration of the steel bar tying machine according to the second embodiment. [Figure 6A] It is an internal configuration view seen from the other side showing an example of the overall configuration of the steel bar tying machine according to the third embodiment. [Figure 6B] It is an external perspective view seen from below the other side showing an example of the overall configuration of the steel bar tying machine according to the third embodiment. [Figure 7A] It is an internal configuration view seen from the other side showing an example of the overall configuration of the steel bar tying machine according to the fourth embodiment. [Figure 7B] It is an external perspective view seen from the other side showing an example of the overall configuration of the steel bar tying machine according to the fourth embodiment. [Figure 8A] It is an internal configuration view seen from one side showing an example of the overall configuration of the steel bar tying machine according to the fifth embodiment. [Figure 8B] It is an internal configuration view seen from the other side showing an example of the overall configuration of the steel bar tying machine according to the fifth embodiment. [Figure 8C] It is an external perspective view seen from above one side showing an example of the overall configuration of the steel bar tying machine according to the fifth embodiment. [Figure 8D] It is an external perspective view seen from below the other side showing an example of the overall configuration of the steel bar tying machine according to the fifth embodiment.

Mode for Carrying Out the Invention

[0013] Hereinafter, an example of a steel bar tying machine as an embodiment of the tying machine of the present invention will be described with reference to the drawings. In the present embodiment, the side, top, bottom, front, and rear surfaces constituting the main body of the steel bar tying machine include flat surfaces and curved surfaces.

[0014] <First Embodiment> <Example of the Configuration of the Steel Bar Tying Machine of the Present Embodiment> Figure 1A is a partially exploded side view from one side showing an example of the overall configuration of the rebar tying machine of this embodiment, and Figure 1B is a rear cross-sectional view showing an example of the main components of the rebar tying machine of this embodiment. Figure 2A is an external perspective view from below one side showing an example of the overall configuration of the rebar tying machine of this embodiment, and Figure 2B is an external side view from the other side showing an example of the overall configuration of the rebar tying machine of this embodiment. Furthermore, Figures 3A and 3B are internal configuration diagrams viewed from the other side showing an example of the overall configuration of the rebar tying machine of this embodiment. Note that Figure 1B is a cross-sectional view of AA in Figure 3B.

[0015] The rebar tying machine 1A is designed to be held and used by a worker, and comprises a main body 10A and a handle 11A provided on the lower surface 10a6 of one side of the main body 10A in the first direction D1. The rebar tying machine 1A feeds the wire W in the forward direction indicated by arrow F, wraps it around the rebar S to be tied, feeds the wire W that is wrapped around the rebar S in the reverse direction indicated by arrow R, wraps it around the rebar S and cuts it, then twists the wire W to tie the rebar S with the wire W.

[0016] To achieve the functions described above, the rebar tying machine 1A includes a magazine 2A for storing wire W, a wire feeding unit 3A for feeding wire W, and a wire guide 4A for guiding the wire W fed to the wire feeding unit 3A. The rebar tying machine 1A also includes a curling unit 5A that forms a path for winding the wire W fed by the wire feeding unit 3A around the rebar S, and a cutting unit 6A for cutting the wire W wrapped around the rebar S. Furthermore, the rebar tying machine 1A includes a tying unit 7A for twisting the wire W wrapped around the rebar S, and a drive unit 8A for driving the tying unit 7A.

[0017] Magazine 2A is an example of a storage section, in which a reel 20, on which a long wire W is wound so as to be dispensed, is rotatably and detachably housed. The wire W can be made of a metal wire that can be plastically deformed, a metal wire coated with resin, or a stranded wire. One or more wires W are wound around a hub (not shown) on the reel 20, and one or more wires W can be pulled out from the reel 20 simultaneously.

[0018] The wire feeding unit 3A includes a pair of feed gears 30 that grip and feed one or more parallel wires W, a feed motor 31 that drives the feed gears 30, and a transmission mechanism 32 that transmits the rotational motion of the feed motor 31 to the feed gears 30. The feed motor 31 is an example of a drive unit and is mounted on one side surface 10a1, which is an example of one side in the second direction D2 of the main body 10A, in a form that protrudes laterally outward. In the wire feeding unit 3A, the rotational motion of the feed motor 31 is transmitted via the transmission mechanism 32 to the feed gears 30, causing them to rotate.

[0019] As a result, the wire feeding unit 3A feeds the wire W, which is held between the pair of feed gears 30, along the direction in which the wire W extends. In a configuration that feeds multiple wires, for example, two wires W, the two wires W are fed in parallel.

[0020] The wire feeding unit 3A switches the rotation direction of the feed gear 30 by switching the forward and reverse rotation direction of the feed motor 31, thereby switching the feeding direction of the wire W between the forward direction, which is one direction, and the reverse direction, which is the other direction opposite to the forward direction.

[0021] The wire guide 4A is provided at a predetermined position upstream of the wire feeding section 3A with respect to the feeding direction that feeds the wire W in the forward direction. In a configuration that feeds two wires W, the wire guide 4A restricts the radial orientation of the two wires W, guiding the two incoming wires W in parallel between the pair of feed gears 30.

[0022] The wire guide 4A has a shape such that the downstream opening, relative to the feeding direction of the wire W being fed in the forward direction, restricts the radial orientation of the wire W. In contrast, the upstream opening, relative to the feeding direction of the wire W being fed in the forward direction, has a larger opening area than the downstream opening.

[0023] The curl-forming section 5A includes a curl guide 50 that gives the wire W, which is fed by the wire feeding section 3A, a guide guide 51 that guides the wire W, which has been given a curl by the curl guide 50, to the binding section 7A. In the rebar binding machine 1A, the path of the wire W, which is fed by the wire feeding section 3A, is restricted by the curl-forming section 5A, so that the trajectory of the wire W becomes a loop Ru as shown by the dashed line in Figure 3A, and the wire W is wrapped around the rebar S.

[0024] The cutting section 6A comprises a fixed blade section 60, a movable blade section 61 that cuts the wire W in cooperation with the fixed blade section 60, and a transmission mechanism 62 that transmits the operation of the binding section 7A to the movable blade section 61. The cutting section 6A cuts the wire W by the rotational movement of the movable blade section 61 with the fixed blade section 60 as the pivot axis.

[0025] The binding section 7A includes a wire locking body 70 to which the wire W is locked, and a rotating shaft 72 that operates the wire locking body 70. The drive section 8A includes a motor 80, which is an example of another drive section, and a reduction gear 81 that performs reduction and torque amplification. The binding section 7A and the drive section 8A are connected via the reduction gear 81 between the rotating shaft 72 and the motor 80, and the rotating shaft 72 is driven by the motor 80 via the reduction gear 81.

[0026] The rotating shaft 72 is located approximately in the center of the main body 10A when viewed from above, and extends in the front-rear direction indicated by arrows A1 and A2. The reduction gear 81, for example, uses a configuration in which the input shaft and output shaft are located coaxially. As a result, the motor 80 is located at the rear of the main body 10A, which is the other side of the rotating shaft 72 along its axial direction, and is mounted coaxially with the rotating shaft 72.

[0027] The rebar tying machine 1A has the curl guide 50 and guide guide 51 of the curl forming section 5A described above, which protrude from the front surface 10a4 of the main body section 10A, which is one side along the axial direction of the rotating shaft 72. The rebar tying machine 1A also has a feed restricting section 90 that abuts the tip of the wire W in the feed path of the wire W, which is guided by the curl forming section 5A and locked by the wire locking body 70. Furthermore, the rebar tying machine 1A has a stopper section 91 against which the rebar S abuts, which is provided at the front end of the main body section 10A, between the curl guide 50 and the guide guide 51.

[0028] The rebar tying machine 1A has a handle section 11A that extends downward from the main body section 10A. A battery 9A is detachably attached to the lower part of the handle section 11A. Furthermore, the rebar tying machine 1A has a magazine 2A located in front of the handle section 11A. The rebar tying machine 1A houses the wire feeding section 3A, cutting section 6A, tying section 7A, and the drive section 8A that drives the tying section 7A, etc., as described above, in the main body section 10A.

[0029] The rebar tying machine 1A has a trigger 12A, which is an example of an operating part, on the front side of the handle part 11A, and a switch 13A is provided inside the handle part 11A. The control unit 14A controls the motor 80 and the feed motor 31 according to the state of the switch 13A which is pressed by the operation of the trigger 12A.

[0030] The rebar tying machine 1A is equipped with an operating unit 19 that receives operations such as turning the power on and off and setting the tying strength using the wire W. The operating unit 19 is located on the rear surface 10a3, which is an example of the other side of the main body 10A along the axial direction of the rotation axis 72, and includes a tying strength setting unit 19a for setting the tying strength using the wire W, and a power switch 19b, etc.

[0031] The rebar tying machine 1A is equipped with a fan 15A that cools a motor 80 and a feed motor 31, which generate heat when driven by an airflow passing through the main body 10A. The rebar tying machine 1A is also equipped with a mounting portion 15Aa for the fan 15A on one side surface 10a1 of the main body 10A in a second direction D2 that intersects the axial direction of the rotating shaft 72 and the direction in which the handle portion 11A extends. The fan 15A is an example of a blower and is mounted on the mounting portion 15Aa on one side surface 10a1 of the main body 10A in a form that protrudes laterally outward. The feed motor 31 is located on the front side, which is one side along the axial direction of the rotating shaft 72, via the fan 15A. That is, the fan 15A is located behind the feed motor 31. The fan 15A is also located to the side of the motor 80. For example, an axial flow fan, centrifugal fan, blower fan, etc., can be used as the fan 15A.

[0032] In the main body 10A, the mounting portion 15Aa has an opening where the fan 15A is attached, and the air intake of the fan 15A and the inside of the main body 10A are connected so that air can pass through.

[0033] The rebar tying machine 1A is equipped with a cover 16A on one side 10a1 of the main body 10A that covers the mounting portion 15Aa. The cover 16A is an example of a convex exterior portion and is shaped to cover the fan 15A attached to one side 10a1 of the main body 10A, as well as the feed motor 31 of the wire feeding section 3A, the transmission mechanism 32, and one of the feed gears 30, etc., and is configured to protrude laterally outward.

[0034] The rebar tying machine 1A is equipped with a first air intake port 17Aa into which outside air is drawn into the main body 10A by the airflow generated by the fan 15A. The first air intake port 17Aa is configured by providing an opening at a predetermined position on the side of the main body 10A, for example, on the other side 10a2 which is an example of the other side of the main body 10A in the second direction D2. On the other side 10a2 of the main body 10A, the part connected to the handle part 11A is a convex part 10b that protrudes laterally outward, and below the convex part 10b, a recess 10c that is recessed inward is provided in a part of the part connected to the handle part 11A. The first air intake port 17Aa is provided in the recess 10c and is configured so that the first air intake port 17Aa is not exposed when the rebar tying machine 1A is viewed from above.

[0035] Furthermore, the rebar tying machine 1A may also have a second air intake port 17Ab in the gap between the trigger 12A and the main body 10A, into which air is drawn in. Since the trigger 12A is a movable component relative to the main body 10A, a gap is provided between the trigger 12A and the main body 10A. When the fan 15A generates an airflow through the main body 10A, air is also drawn in from this gap between the trigger 12A and the main body 10A. Thus, the gap between the trigger 12A and the main body 10A constitutes the second air intake port 17Ab. Note that the air intake port may also be formed in the gap between switches other than the trigger 12A, for example, the tying force setting unit 19a or the power switch 19b provided on the operating unit 19 located behind the motor 80 and the main body 10A, or the gap between the main body 10A and movable components such as switches that are exposed to the outside from the main body 10A and move relative to the main body 10A.

[0036] The rebar tying machine 1A is equipped with a filter 17c inside the main body 10A located inside the first air intake port 17Aa. The filter 17c removes dust and other particles from the air drawn into the main body 10A by the fan 15A, and also prevents foreign matter such as dust, dirt, and moisture from entering the main body 10A.

[0037] The rebar tying machine 1A has an exhaust port 18A on one side 10a1, which is the side opposite to the other side 10a2 where the first air intake port 17Aa of the main body 10A is provided, with an opening facing downward along the direction in which the handle portion 11A extends. The exhaust port 18A is formed by providing an opening on the lower surface of the portion of the cover 16A that protrudes laterally outward and faces outward, in the part facing the fan 15A. The rebar tying machine 1A also has a filter 18a inside the exhaust port 18A. The filter 18a prevents foreign matter such as dust, dirt, and moisture from entering the main body 10A. The fan 15A may be provided on the other side 10a2 of the main body 10A in the second direction D2. In this case, it is preferable to provide the first intake port 17Aa on one side surface 10a1 of the main body 10A, and the exhaust port 18A on the other side surface 10a2 of the main body 10A, which is on the same side as the fan 15A.

[0038] Figure 4A is a side view showing the main components of the rebar tying machine of this embodiment, Figure 4B is a top view showing the main components of the rebar tying machine of this embodiment, and Figure 4C is a top cross-sectional view showing the main components of the rebar tying machine of this embodiment. Next, the details of the tying unit 7A and the connection structure between the tying unit 7A and the drive unit 8A will be described with reference to each figure.

[0039] As described above, the binding section 7A includes a wire locking body 70 to which the wire W is locked, and a rotating shaft 72 that operates the wire locking body 70. The binding section 7A and the drive section 8A are connected by a reduction gear 81 between the rotating shaft 72 and the motor 80, and the rotating shaft 72 is driven by the motor 80 via the reduction gear 81.

[0040] The wire locking body 70 includes a center hook 70C connected to the rotating shaft 72, a first side hook 70L and a second side hook 70R that open and close relative to the center hook 70C, and a sleeve 71 that operates the first side hook 70L and the second side hook 70R in conjunction with the rotational movement of the rotating shaft 72.

[0041] In the fastening section 7A, the side on which the center hook 70C, the first side hook 70L, and the second side hook 70R are provided is the front side, and the side on which the rotating shaft 72 is connected to the reduction gear 81 is the rear side.

[0042] The center hook 70C is connected to the front end, which is one end of the rotating shaft 72, via a configuration that allows it to rotate relative to the rotating shaft 72 and move integrally with the rotating shaft 72 in the axial direction.

[0043] The first side hook 70L has a front end, which is one end along the axial direction of the rotation axis 72, positioned on one side relative to the center hook 70C. The other end of the first side hook 70L, which is the rear end, is rotatably supported by the center hook 70C on axis 71b, along the axial direction of the rotation axis 72.

[0044] The second side hook 70R has a front end, which is one end along the axial direction of the rotation axis 72, positioned on the other side relative to the center hook 70C. The rear end, which is the other end along the axial direction of the rotation axis 72, is rotatably supported by the center hook 70C on axis 71b.

[0045] As a result, the wire locking body 70 rotates with the axis 71b as the pivot point, causing the tip of the first side hook 70L to open and close in a direction away from the center hook 70C. Also, the tip of the second side hook 70R opens and closes in a direction away from the center hook 70C.

[0046] The rotating shaft 72 is connected to the reduction gear 81 at its rear end via a connecting portion 72b, which is configured to rotate integrally with the reduction gear 81 and to be movable axially relative to the reduction gear 81. The connecting portion 72b includes a spring 72c that biases the rotating shaft 72 towards the reduction gear 81, thereby restricting the position of the rotating shaft 72 along the axial direction. As a result, the rotating shaft 72 is configured to be movable forward, away from the reduction gear 81, while being pushed backward by the spring 72c. Therefore, when a force is applied that moves the wire locking body 70 forward along the axial direction, the rotating shaft 72 is able to move forward while being pushed backward by the spring 72c.

[0047] The sleeve 71 is shaped so that a predetermined length of the sleeve, extending from the front end indicated by arrow A1 along the axial direction of the rotating shaft 72, is divided radially into two sections, into which the first side hook 70L and the second side hook 70R can be opened and closed. The sleeve 71 is cylindrical and covers the circumference of the rotating shaft 72, and has a protrusion (not shown) that projects from the inner circumferential surface of the cylindrical space into which the rotating shaft 72 is inserted. This protrusion fits into a groove of the feed screw 72a formed along the axial direction on the outer circumference of the rotating shaft 72. When the rotating shaft 72 rotates, the sleeve 71 moves in the forward and backward direction, which is along the axial direction of the rotating shaft 72, in accordance with the rotation direction of the rotating shaft 72, due to the action of the protrusion (not shown) and the feed screw 72a of the rotating shaft 72. The sleeve 71 also rotates integrally with the rotating shaft 72.

[0048] The sleeve 71 is equipped with an opening / closing pin 71a for opening and closing the first side hook 70L and the second side hook 70R.

[0049] The opening / closing pin 71a is inserted into the opening / closing guide hole 73 provided in the first side hook 70L and the second side hook 70R. The opening / closing guide hole 73 extends along the direction of movement of the sleeve 71 and has a shape that converts the linear movement of the opening / closing pin 71a, which moves in conjunction with the sleeve 71, into an opening / closing operation by rotation of the first side hook 70L and the second side hook 70R with the axis 71b as the pivot point.

[0050] As the sleeve 71 moves in the rearward direction indicated by arrow A2, the wire locking body 70 causes the first side hook 70L and the second side hook 70R to move away from the center hook 70C in a rotational motion with the axis 71b as the pivot point, due to the trajectory of the opening / closing pin 71a and the shape of the opening / closing guide hole 73.

[0051] As a result, the first side hook 70L and the second side hook 70R open relative to the center hook 70C, forming a feeding path for the wire W between the first side hook 70L and the center hook 70C, and between the second side hook 70R and the center hook 70C.

[0052] When the first side hook 70L and the second side hook are open relative to the center hook 70C, the wire W fed by the wire feeding section 3A passes between the center hook 70C and the first side hook 70L. The wire W passing between the center hook 70C and the first side hook 70L is guided to the curl forming section 5A. The wire W, which has been given a curl in the curl forming section 5A and guided to the binding section 7A, passes between the center hook 70C and the second side hook 70R.

[0053] As the wire locking body 70 moves forward in the direction indicated by arrow A1, the first side hook 70L and the second side hook 70R move toward the center hook 70C in a rotational motion with the axis 71b as the pivot point, due to the trajectory of the opening / closing pin 71a and the shape of the opening / closing guide hole 73. As a result, the first side hook 70L and the second side hook 70R close toward the center hook 70C.

[0054] When the first side hook 70L closes against the center hook 70C, the wire W sandwiched between the first side hook 70L and the center hook 70C is locked in a manner that allows it to move between the first side hook 70L and the center hook 70C. Similarly, when the second side hook 70R closes against the center hook 70C, the wire W sandwiched between the second side hook 70R and the center hook 70C is locked in a manner that prevents it from coming out from between the second side hook 70R and the center hook 70C.

[0055] The wire locking body 70 includes a bending portion 71c1 that shapes the wire W into a predetermined shape by pushing and bending one end of the wire W, the tip end, in a predetermined direction. The wire locking body 70 also includes a bending portion 71c2 that shapes the wire W into a predetermined shape by pushing and bending the other end of the wire W, the terminal end, which has been cut at the cutting portion 6A, in a predetermined direction.

[0056] The sleeve 71 has a shape in which the front end indicated by arrow A1 is divided into two parts, with the first side hook 70L and the second side hook 70R and the center hook 70C in between. In the non-rotating region, a bent portion 71c1 is formed at the upper front end, and a bent portion 71c2 is formed at the lower front end.

[0057] After the wire W is cut at the cutting section 6A, the sleeve 71 moves further forward as indicated by arrow A1, pressing the tip end of the wire W, which is locked by the center hook 70C and the second side hook 70R, with the bending section 71c1, bending it toward the reinforcing bar S. The sleeve 71 is also locked by the center hook 70C and the first side hook 70L, and presses the end end of the wire W, which was cut at the cutting section 6A, with the bending section 71c2, bending it toward the reinforcing bar S.

[0058] The binding section 7A includes a rotation restricting section 74 that restricts the rotation of the wire locking body 70 and sleeve 71, which are linked to the rotational movement of the rotating shaft 72. The rotation restricting section 74 has a rotation restricting vane 74a on the sleeve 71 and a rotation restricting claw 74b on the main body 10A.

[0059] The rotation restricting vane 74a is constructed by providing a plurality of protrusions that project radially from the outer circumference of the sleeve 71 at predetermined intervals in the circumferential direction of the sleeve 71. The rotation restricting vane 74a is fixed to the sleeve 71 and moves and rotates integrally with the sleeve 71.

[0060] In the rotation restricting section 74, the wire W is secured by the wire locking body 70, the wire W is wrapped around the reinforcing bar S, then cut by the cutting section 6A, and further, the wire W is bent and shaped by the bending sections 71c1 and 71c2 of the sleeve 71. In this operating range, the rotation restricting blade 74a is locked to the rotation restricting claw 74b. When the rotation restricting blade 74a is locked to the rotation restricting claw 74b, the rotation of the sleeve 71, which is linked to the rotation of the rotating shaft 72, is restricted, and the sleeve 71 moves in the front-back direction as the rotating shaft 72 rotates.

[0061] Furthermore, in the operating range where the wire W locked by the wire locking body 70 is twisted, the rotation restricting section 74 releases its engagement with the rotation restricting claw 74b of the rotation restricting vane 74a. When the rotation restricting vane 74a releases its engagement with the rotation restricting claw 74b, the sleeve 71 rotates in conjunction with the rotation of the rotating shaft 72. In conjunction with the rotation of the sleeve 71, the wire locking body 70's center hook 70C, first side hook 70L, and second side hook 70R rotate, locking the wire W. In the operating range of the sleeve 71 and wire locking body 70 along the axial direction of the rotating shaft 72, the operating range where the wire W is locked by the wire locking body 70 is referred to as the first operating range. In addition, the operating range in the first operating range where the wire W locked by the wire locking body 70 is twisted is referred to as the second operating range.

[0062] The fastening section 7A is provided with a movable member 83 that is movable in conjunction with the sleeve 71. The movable member 83 is rotatably attached to the sleeve 71 and moves in the front-rear direction in conjunction with the sleeve 71, but not in conjunction with the rotation of the sleeve 71.

[0063] The movable member 83 is equipped with an engaging portion 83a that engages with the transmission mechanism 62. When the movable member 83 moves in the forward and backward direction in conjunction with the sleeve 71, the transmission mechanism 62 transmits the movement of the movable member 83 to the movable blade portion 61, causing the movable blade portion 61 to rotate. As a result, the movable blade portion 61 rotates in a predetermined direction as the sleeve 71 moves forward, and the wire W is cut.

[0064] The binding section 7A includes a tension-applying spring 92 that allows binding to be performed while tension is applied to the wire W. The tension-applying spring 92 is provided on the outside of the sleeve 71 and biases the sleeve 71 and the wire locking body 70 toward the abutment section 91 along the axial direction of the rotation shaft 72. The tension-applying spring 92 is, for example, a coil spring that expands and contracts in the axial direction and is fitted around the outer circumference of the sleeve 71 between the rotation restricting vane 74a and the support frame 76d that supports the sleeve 71 so that it can rotate and slide in the axial direction.

[0065] The tension-applying spring 92 is compressed between the support frame 76d and the rotation-restricting vane 74a depending on the position of the sleeve 71 along the axial direction of the rotation axis 72, biasing the sleeve 71 backward in the direction away from the abutment portion 91 along the axial direction of the rotation axis 72. As a result, the tension-applying spring 92 biases the wire locking body 70 equipped with the sleeve 71 in a direction that maintains the tension applied to the wire W during the operation of feeding the wire W in the reverse direction and wrapping it around the reinforcing bar S.

[0066] As a result, when the sleeve 71 moves forward and is compressed, the tension-applying spring 92 applies tension to the wire W, which is wrapped around the reinforcing bar S and then cut at the cutting section 6A, with a force greater than the force acting in the direction that would loosen the wire W wrapped around the reinforcing bar S. Therefore, it becomes possible to tie the wires while tension is applied to the wire W after it has been cut.

[0067] Furthermore, the wire locking body 70 is configured to be movable forward while the sleeve 71 is subjected to a force pushing it backward by the tension-applying spring 92, and the rotating shaft 72 is subjected to a force pushing it backward by the spring 72c.

[0068] <Example of operation of the rebar tying machine of this embodiment> Next, with reference to the figures, the operation of tying reinforcing bars S with wire W using the reinforcing bar tying machine 1A of this embodiment will be described. Here, there are two ways of using the reinforcing bar tying machine 1A: for example, when the reinforcing bar tying machine 1A is used facing downwards, and when the reinforcing bar tying machine 1A is used facing sideways. In this embodiment, when the reinforcing bar tying machine 1A is used facing downwards, the fastening work is performed when the object to be tied is on the floor side, with the handle part 11A facing sideways and the curl forming part 5A on one side of the rotation shaft 72 facing downwards. When the reinforcing bar tying machine 1A is used sideways, the fastening work is performed when the object to be tied is on the wall side, with the handle part 11A facing downwards and the curl forming part 5A on one side of the rotation shaft 72 facing sideways.

[0069] When the reinforcing bar S is placed between the curl guide 50 and the guide guide 51 of the curl forming section 5A and the trigger 12A is operated, the feed motor 31 is driven in the forward rotation direction, and the wire W is fed in the forward direction indicated by the arrow F in the wire feed section 3A.

[0070] In a configuration where multiple wires, for example two wires W, are used to tie together the reinforcing bars S, the wire guide 4A ensures that the two wires W are fed in parallel along the axial direction of the loop Ru formed by the wires W.

[0071] The wire W, fed in the forward direction, passes between the center hook 70C and the first side hook 70L and is sent to the curl guide 50 of the curl forming section 5A. As the wire W passes through the curl guide 50, it acquires a curl that causes it to wrap around the reinforcing bar S.

[0072] The wire W, which has been coiled by the curl guide 50, is guided by the guide guide 51 and further fed in the forward direction by the wire feeding section 3A, so that it is guided by the guide guide 51 between the center hook 70C and the second side hook 70R. The wire W is then fed until its tip abuts against the feed restricting section 90. When the tip of the wire W reaches the position where it abuts against the feed restricting section 90, the drive of the feed motor 31 is stopped.

[0073] After stopping the forward feeding of the wire W, the motor 80 is driven in the forward rotation direction. In the first operating range where the wire W is locked by the wire locking body 70, the rotation restricting vane 74a is locked to the rotation restricting claw 74b, thereby restricting the rotation of the sleeve 71 which is linked to the rotation of the rotating shaft 72. As a result, the rotation of the motor 80 is converted into linear motion, and the sleeve 71 moves in the forward direction, as indicated by arrow A1.

[0074] As the sleeve 71 moves forward, the opening / closing pin 71a passes through the opening / closing guide hole 73. As a result, the first side hook 70L moves toward the center hook 70C in a rotational motion with the axis 71b as the pivot point. When the first side hook 70L closes toward the center hook 70C, the wire W sandwiched between the first side hook 70L and the center hook 70C is locked in a manner that allows it to move between the first side hook 70L and the center hook 70C.

[0075] Furthermore, the second side hook 70R moves toward the center hook 70C by a rotational motion with the axis 71b as the pivot point. When the second side hook 70R closes toward the center hook 70C, the wire W sandwiched between the second side hook 70R and the center hook 70C is locked in a manner that prevents it from slipping out from between the second side hook 70R and the center hook 70C.

[0076] After the sleeve 71 is advanced to a position where the wire W is locked by the closing of the first side hook 70L and the second side hook 70R, the rotation of the motor 80 is temporarily stopped and the feed motor 31 is driven in the reverse direction.

[0077] As a result, the pair of feed gears 30 reverse direction, and the wire W, which is held between the pair of feed gears 30, is fed in the opposite direction indicated by arrow R. Since the tip of the wire W is locked in a manner that prevents it from coming out between the second side hook 70R and the center hook 70C, the wire W is wrapped around the reinforcing bar S by the motion of feeding the wire W in the reverse direction.

[0078] After wrapping the wire W around the reinforcing bar S and stopping the reverse rotation of the feed motor 31, the motor 80 is driven in the forward rotation direction to move the sleeve 71 further forward, as indicated by arrow A1.

[0079] The forward movement of the sleeve 71 is transmitted to the cutting section 6A by the transmission mechanism 62, causing the movable blade section 61 to rotate, and the wire W, which is locked by the first side hook 70L and the center hook 70C, is cut by the movement of the fixed blade section 60 and the movable blade section 61.

[0080] When the wire W is cut, the tension on the wire W is released, and the sleeve 71 attempts to move forward. As the sleeve 71 moves forward, the force pulling the wire W, which is locked in place by the wire locking body 70, backward decreases, and the wire W wrapped around the reinforcing bar S loosens before it can twist.

[0081] In contrast, in this embodiment, the rebar tying machine 1A moves the sleeve 71 and wire locking body 70 forward to cut the wire W. In the operating range, the rotation restricting vane 74a contacts the tension-applying spring 92, and the tension-applying spring 92 is compressed between the support frame 76d and the rotation restricting vane 74a, causing the sleeve 71 and wire locking body 70 to be biased backward by the tension-applying spring 92.

[0082] This suppresses the forward movement of the sleeve 71, thereby preventing a decrease in the force pulling the wire W, which is locked by the wire locking body 70, backward, and preventing the wire W wrapped around the reinforcing bar S from loosening before it twists.

[0083] By driving the motor 80 in the forward rotation direction, the sleeve 71 moves forward as indicated by arrow A1, cutting the wire W. Almost simultaneously, the bending portion 71c1 moves in a direction approaching the reinforcing bar S. This causes the tip of the wire W, which is locked between the center hook 70C and the second side hook 70R, to be pressed toward the reinforcing bar S by the bending portion 71c1, bending it toward the reinforcing bar S with the locking position as a fulcrum. As the sleeve 71 moves further forward, the wire W, which is locked between the second side hook 70R and the center hook 70C, is held in a state where it is sandwiched by the bending portion 71c1.

[0084] Furthermore, the wire W, which is held between the first wire holding portion 71c2a and the second wire holding portion 71c2b that constitute the bent portion 71c2 of the sleeve 71 and the anti-slip portion 70La of the first side hook 70L, is further pressed toward the reinforcing bar S by the bent portion 71c2, and bent toward the reinforcing bar S with the locking position as a fulcrum. As the sleeve 71 moves further forward, the wire W, which is locked between the first side hook 70L and the center hook, is held in a state where it is sandwiched between the bent portion 71c2.

[0085] After the tip and end of the wire W are bent toward the reinforcing bar S, the motor 80 is further driven in the forward rotation direction, causing the sleeve 71 to move further forward. When the sleeve 71 moves to a predetermined position and reaches the operating range in which the wire W, which is locked by the wire locking body 70, is twisted, the locking of the rotation restricting vane 74a with the rotation restricting claw 74b is released.

[0086] As a result, the motor 80 is driven further in the forward rotation direction, causing the sleeve 71 to rotate in conjunction with the rotating shaft 72, and the wire W, which is locked in the wire locking body 70, to twist.

[0087] In the second operating range where the sleeve 71 rotates and twists the wire W, the wire W, which is locked by the wire locking body 70, is twisted, and a force is applied to the wire locking body 70 that pulls it forward along the axial direction of the rotation axis 72. On the other hand, as the sleeve 71 moves forward to a position where it can rotate, the tension-applying spring 92 is further compressed, and the sleeve 71 receives a force that pushes it backward from the tension-applying spring 92.

[0088] As a result, when a force is applied to the wire locking body 70 that moves it forward along the axial direction, the sleeve 71 receives a force that pushes it backward by the tension-applying spring 92, and the rotating shaft 72 receives a force that pushes it backward by the spring 72c, while moving forward and twisting the wire W as it moves forward.

[0089] Therefore, the portion of the wire W locked by the wire locking body 70 is pulled backward, tension is applied tangentially to the reinforcing bar S, and the wire is pulled to be in close contact with the reinforcing bar S. In the second range of motion where the sleeve 71 rotates and twists the wire W, the wire locking body 70 rotates further in conjunction with the rotating shaft 72, causing the wire locking body 70 and the rotating shaft 72 to move forward, which is the direction in which the gap between the twisted portion of the wire W and the reinforcing bar S becomes smaller, thereby twisting the wire W further.

[0090] Therefore, as the wire W moves forward and is twisted while the wire locking body 70 and the rotating shaft 72 are subjected to a force pushing backward by the tension-applying springs 92 and 72c, the gap between the twisted portion of the wire W and the reinforcing bar S becomes smaller, and the wire W adheres closely to the reinforcing bar S in a manner that follows the shape of the reinforcing bar S. This eliminates the slack in the wire W before twisting, and allows the wire W to be tied in a state of close contact with the reinforcing bar S.

[0091] When the load on the motor 80 is detected to be at its maximum due to the twisting of the wire W, the forward rotation of the motor 80 is stopped. Next, when the motor 80 is driven in the reverse direction, the rotating shaft 72 rotates in the reverse direction, and as the sleeve 71 rotates in the reverse direction following the rotation of the rotating shaft 72, the rotation restricting vane 74a is locked into the rotation restricting claw 74b, thereby restricting the rotation of the sleeve 71 which is linked to the rotation of the rotating shaft 72. As a result, the sleeve 71 moves in the direction of arrow A2, which is the rear direction.

[0092] As the sleeve 71 moves backward, the bent portions 71c1 and 71c2 separate from the wire W, and the wire W is no longer held by the bent portions 71c1 and 71c2. Also, as the sleeve 71 moves backward, the opening / closing pin 71a passes through the opening / closing guide hole 73. As a result, the first side hook 70L moves away from the center hook 70C in a rotational motion with the shaft 71b as the pivot point. Similarly, the second side hook 70R moves away from the center hook 70C in a rotational motion with the shaft 71b as the pivot point. As a result, the wire W is released from the wire locking body 70.

[0093] In the rebar tying machine 1A, the motor 80 is driven by actions such as twisting the wire W, causing the temperature of the motor 80 to rise. Additionally, the feed motor 31 is driven by actions such as feeding the wire W, causing the temperature of the feed motor 31 to rise.

[0094] In contrast, when the fan 15A of the rebar tying machine 1A is driven, air is drawn into the main body 10A from a first air intake port 17Aa located on the other side 10a2 of the main body 10A. The air drawn in from the first air intake port 17Aa passes through the main body 10A and is exhausted from an exhaust port 18A located on one side 10a1 of the main body 10A. Air is also drawn into the main body 10A from a second air intake port 17Ab, which is formed by the gap between a movable member such as the trigger 12A and the main body 10A.

[0095] As a result, air is drawn into the main body 10A from the outside, and the air that has become hotter inside the main body 10A is exhausted to the outside, thereby suppressing the temperature rise inside the main body 10A. Therefore, the temperature rise of the motor 80 and the feed motor 31 can be suppressed. In particular, by providing a first intake port 17Aa on the other side surface 10a2 of the main body 10A near the location where the motor 80 is installed, and an exhaust port 18A on the other side surface 10a1, an airflow CA passing around the motor 80 is more likely to occur, as shown by the dashed line in Figure 1B, thereby enhancing the effect of suppressing the temperature rise of the motor 80.

[0096] In power tools such as strapping machines, which have a handle and a motor located at the rear of the main body, a configuration in which a fan is installed at the rear of the main body is known. With such a configuration, the length of the main body in the front-to-back direction increases, resulting in a difference in user experience compared to configurations without a fan. Also, with the exhaust port at the rear of the main body, when the power tool is used facing downwards, the exhaust port faces upwards. As a result, dust and moisture can easily enter through the exhaust port.

[0097] In contrast, the rebar tying machine 1A has a feed motor 31 that protrudes from one side 10a1 of the main body 10A, and one side 10a1 of the main body 10A has a protruding portion. Therefore, even if the fan 15A is installed on one side 10a1 of the main body 10A, there is little difference in the feel of using it.

[0098] Furthermore, the rebar tying machine 1A is equipped with an exhaust port 18A on one side surface 10a1 of the main body 10A, with an opening facing in the direction in which the handle 11A extends. This ensures that when the rebar tying machine 1A is used horizontally, the exhaust port 18A faces downward, and when the rebar tying machine 1A is used downward, the exhaust port 18A faces sideways. This prevents dust, moisture, etc. from entering through the exhaust port 18A. In addition, the rebar tying machine 1A is equipped with a first air intake port 17Aa on the other side surface 10a2 of the main body 10A, with a recess 10c. This ensures that when the rebar tying machine 1A is used horizontally, the first air intake port 17Aa does not face upward and is not exposed when viewed from above, and when the rebar tying machine 1A is used downward, the first air intake port 17Aa faces sideways. This prevents dust, moisture, and other contaminants from entering through the first air intake port 17Aa.

[0099] <Second Embodiment> The second embodiment differs from the first embodiment in that the fan 15A is located to the side of the motor 80, in that the fan 15B is located above the motor 80. Regarding the configuration and operation of the rebar tying machine 1B in the second embodiment that are common to the rebar tying machine 1A in the first embodiment, redundant explanations will be omitted by referring to the description of the first embodiment.

[0100] Figure 5A is an internal configuration diagram viewed from the other side, showing an example of the overall configuration of the rebar tying machine according to the second embodiment. Figure 5B is an external perspective view viewed from the other side, showing an example of the overall configuration of the rebar tying machine according to the second embodiment.

[0101] As shown in Figures 5A and 5B, the rebar tying machine 1B includes, in addition to the wire feeding section 3A, curling section 5A, cutting section 6A, tying section 7A, main body section 10A, and handle section 11A described above, a fan 15B, an example of a blower, a first intake port 17Ba, a second intake port 17Bb, and an exhaust port 18B. Furthermore, the main body section 10A has one side surface 10a1 and the other side surface 10a2 in each of the second direction D2 that intersects the axial direction of the rotating shaft 72 and the direction in which the handle section 11A extends.

[0102] The fan 15B generates airflow through the main body 10A, cooling the motor 80 and the feed motor 31, which generate heat when driven. The fan 15B is located above the motor 80, on the upper surface 10a5 side, which is an example of the other side of the main body 10A in the first direction D1. More specifically, the fan 15B is positioned in the space enclosed by the upper surface of the motor 80, the rear surface of the control unit 14A, and the upper and rear surfaces of the housing that constitutes the main body 10A. The fan 15B may also be positioned between the control unit 14A and the upper surface 10a5 of the main body 10A, between the control unit 14A and the motor 80, or between the control unit 14A and one side surface 10a1 or the other side surface 10a2 of the main body 10A. For example, an axial flow fan, centrifugal fan, blower fan, etc., can be used as the fan 15B. The fan 15B is attached to a mounting part 15Ba fixed at a predetermined position on the main body 10A. An opening (not shown) is formed in the mounting portion 15Ba at the position where the fan 15B will be mounted, and the air intake port of the fan 15B and the inside of the main body portion 10A are in communication through this opening.

[0103] The first air intake port 17Ba draws outside air into the main body 10A using the airflow generated by the fan 15B. The first air intake port 17Ba is located on the front surface 10a4 side of the main body 10A and is provided between the base end of the curl guide 50, which is the first guide, and the base end of the guided guide 51, which is the second guide. For example, the first air intake port 17Ba can be formed by the gap between the wire locking body 70 and the housing of the main body 10A, or the gap between the wire locking body 70 and the curl forming part 5A.

[0104] The second air intake port 17Bb is provided in the gap between the trigger 12A and the main body 10A, and draws outside air into the main body 10A using the airflow generated by the fan 15B. Alternatively, the second air intake port 17Bb may be formed in the gap between switches other than the trigger 12A, such as the binding force setting unit 19a or power switch 19b provided on the operating unit 19 located behind the motor 80 and the main body 10A.

[0105] The exhaust port 18B exhausts air drawn into the main body 10A from the first intake port 17Ba or the like to the outside. The exhaust port 18B is provided on the other side surface 10a2 of the main body 10A, which is an example of the other side in a second direction D2 that intersects the axial direction of the rotating shaft 72 and the direction in which the handle portion 11A extends. Specifically, the exhaust port 18B is formed on the other side surface 10a2 of the main body 10A in the vicinity of the motor 80 and at a position facing the other side of the motor 80. The exhaust port 18B is composed of multiple openings that penetrate the housing of the main body 10A in the thickness direction, and these openings face sideways and are formed in the front-rear direction of the other side surface 10a2 of the main body 10A. The exhaust port 18B may also be composed of a single opening. The exhaust port 18B may also be provided on one side surface 10a1 of the main body 10A opposite to the other side surface 10a2.

[0106] In the second embodiment, a first air intake port 17Ba is provided on the front side of the main body 10A, and an exhaust port 18B is provided on the rear side of the main body 10A, with a feed motor 31 and a motor 80 arranged between the first air intake port 17Ba and the exhaust port 18B.

[0107] When the fan 15B is driven in the rebar tying machine 1B, air is drawn into the main body 10A through the first air intake 17Ba formed on the front surface 10a4 side of the main body 10A and the second air intake 17Bb formed in the gap between the trigger 12A and the main body 10A. The air drawn in from the first air intake 17Ba, etc., flows along the rotation axis 72 from the front to the rear of the main body 10A due to the air suction caused by the drive of the fan 15B, passing above, below, and to the left and right sides, which are the periphery of the feed motor 31 and motor 80. In the second embodiment, as shown by the dashed line in Figure 5A, an airflow (air passage) CB is formed in the main body 10A from the front to the rear. Air around the motor 80 is drawn in by the fan 15B. The air drawn in is converted by the fan 15B from flowing axially to flowing laterally perpendicular to the axial direction, and is exhausted to the outside through the exhaust port 18B provided on the other side 10a2 of the main body 10A.

[0108] According to the rebar tying machine 1B of the second embodiment, outside air is drawn into the main body 10A from the first air intake port 17Ba, and the air inside the main body 10A whose temperature has risen is exhausted to the outside from the exhaust port 18B, thereby suppressing the temperature rise inside the main body 10A. Therefore, the temperature rise of the motor 80 and the feed motor 31 can be suppressed. In particular, by providing the exhaust port 18B on the side of the motor 80 and the fan 15B in the main body 10A, when using the fan 15B that blows the inhaled air to the side, the airflow drawn in axially from the first air intake port 17Ba is converted to a lateral flow, and the air can be efficiently exhausted from the exhaust port 18B on the side, thereby enhancing the effect of suppressing the temperature rise of the motor 80.

[0109] Furthermore, the rebar tying machine 1B has an exhaust port 18B on the other side 10a2 of the main body 10A, rather than on the rear side 10a3 of the main body 10A. This ensures that when the rebar tying machine 1B is used horizontally, the exhaust port 18B faces sideways, and even when the rebar tying machine 1B is used downwards, the exhaust port 18B also faces sideways. This prevents dust, moisture, etc. from entering through the exhaust port 18B. In addition, the rebar tying machine 1B has a first air intake port 17Ba on the front side 10a4 of the main body 10A. This ensures that when the rebar tying machine 1B is used horizontally, the first air intake port 17Ba does not face upwards and is not exposed when viewed from above, and when the rebar tying machine 1B is used downwards, the first air intake port 17Ba faces downwards. This prevents dust, moisture, and other contaminants from entering through the first air intake port 17Ba.

[0110] Furthermore, according to the second embodiment, the feed motor 31 and the motor 80 are positioned in the airflow CB between the first intake port 17Ba and the exhaust port 17B, so that both the feed motor 31 and the motor 80 can be efficiently cooled by the airflow CB.

[0111] Furthermore, in the second embodiment, since the exhaust port 18B is not provided on the lower surface 10a6 side of the main body 10A, it is possible to prevent the air exhausted from the exhaust port 18B from hitting the user's hands when the user grips the handle 11A and performs work. This prevents the user from feeling uncomfortable due to the air heated by the motor 80 hitting their hands, even when performing binding work in hot seasons such as summer, and prevents a decrease in work efficiency.

[0112] <Third Embodiment> The third embodiment differs from the first embodiment in that the fan 15A is located to the side of the motor 80, in that the fan 15C is located below the motor 80. Regarding the configuration and operation of the rebar tying machine 1C in the third embodiment that are common to the rebar tying machine 1A in the first embodiment, redundant explanations will be omitted by referring to the description of the first embodiment.

[0113] Figure 6A is an internal configuration diagram viewed from the other side, showing an example of the overall configuration of the rebar tying machine of the third embodiment. Figure 6B is an external perspective view viewed from below the other side, showing an example of the overall configuration of the rebar tying machine of the third embodiment.

[0114] As shown in Figures 6A and 6B, the rebar tying machine 1C includes, in addition to the wire feeding section 3A, curling section 5A, cutting section 6A, tying section 7A, main body section 10A, and handle section 11A described above, a fan 15C, an example of a blower, a first air intake port 17Ca, a second air intake port 17Cb, and an exhaust port 18C.

[0115] The fan 15C generates an airflow through the main body 10A, cooling the motor 80 and the feed motor 31, which generate heat when driven. The fan 15C is located on the lower surface 10a6 side, which is an example of one side of the main body 10A in the first direction D1, and is positioned below the motor 80. More specifically, the fan 15C is located behind the handle 11A, in the space enclosed by the lower surface of the motor 80 and the lower and rear surfaces of the housing that constitutes the main body 10A. For example, an axial fan, centrifugal fan, or blower fan can be used as the fan 15C. The fan 15C is attached to a mounting part 15Ca fixed at a predetermined position on the main body 10A. An opening (not shown) is formed in the mounting part 15Ca at the position where the fan 15C is attached, and the intake port of the fan 15C communicates with the inside of the main body 10A through this opening.

[0116] The first air intake port 17Ca draws outside air into the main body 10A by the airflow generated by the fan 15C. The first air intake port 17Ca is located on the front surface 10a4 side of the main body 10A and is provided between the base end of the curl guide 50, which is the first guide, and the base end of the guide guide 51, which is the second guide. For example, the first air intake port 17Ca can be formed by the gap between the wire locking body 70 and the housing that constitutes the main body 10A, or by the gap between the wire locking body 70 and the curl forming part 5A.

[0117] The second air intake port 17Cb is provided in the gap between the trigger 12A and the main body 10A, and draws outside air into the main body 10A using the airflow generated by the fan 15C. Alternatively, the second air intake port 17Cb may be formed in the gap between switches other than the trigger 12A, such as the binding force setting unit 19a or power switch 19b provided on the operating unit 19 located behind the motor 80 and the main body 10A.

[0118] The exhaust port 18C exhausts air drawn into the main body 10A from the first intake port 17Ca or the like to the outside. The exhaust port 18C is provided on the other side surface 10a2 of the main body 10A, which is an example of the other side in a second direction D2 that intersects the axial direction of the rotating shaft 72 and the direction in which the handle portion 11A extends. More specifically, the exhaust port 18C is formed on the other side surface 10a2 of the main body 10A in the vicinity of the motor 80, at a position opposite one side of the motor 80. The exhaust port 18C is composed of multiple openings that penetrate the housing of the main body 10A in the thickness direction, and these openings face approximately to the side and are formed in the front-rear direction of the other side surface 10a2 of the main body 10A. The exhaust port 18C may also be composed of a single opening. The exhaust port 18C may also be provided on one side surface 10a1 of the main body 10A opposite to the other side surface 10a2.

[0119] In the third embodiment, a first air intake port 17Ca is provided on the front side of the main body 10A, and an exhaust port 18C is provided on the rear side of the main body 10A, with a feed motor 31 and a motor 80 arranged between the first air intake port 17Ca and the exhaust port 18C.

[0120] In the rebar tying machine 1C, when the fan 15C is driven, air is drawn into the main body 10A through the first air intake 17Ca formed on the front surface 10a4 side of the main body 10A and the second air intake 17Cb formed in the gap between the trigger 12A and the main body 10A. The air drawn in from the first air intake 17Ca, etc., flows from the front to the rear of the main body 10A along the rotation axis 72 due to the air suction caused by the drive of the fan 15C, passing above, below, and to the left and right sides, which are the periphery of the feed motor 31 and motor 80. In the third embodiment, as shown by the dashed line in Figure 6A, an airflow (air passage) CC is formed in the main body 10A from the front to the rear. Air around the motor 80 is drawn in by the fan 15C. The air drawn in is converted by the fan 15C from flowing axially to flowing laterally perpendicular to the axial direction, and is exhausted to the outside through the exhaust port 18C provided on the other side 10a2 of the main body 10A.

[0121] In the third embodiment of the rebar tying machine 1C, air is drawn into the main body 10A from the outside through the first air intake port 17Ca, and the air inside the main body 10A whose temperature has risen is exhausted to the outside through the exhaust port 18C, thereby suppressing the temperature rise inside the main body 10A. Therefore, the temperature rise of the motor 80 and the feed motor 31 can be suppressed. In particular, by providing the exhaust port 18C on the side of the motor 80 and the fan 15C in the main body 10A, when using a fan 15C that blows the inhaled air to the side, the airflow drawn in axially from the first air intake port 17Ca is converted to a lateral flow, and the air can be efficiently exhausted from the exhaust port 18C on the side, thereby enhancing the effect of suppressing the temperature rise of the motor 80.

[0122] Furthermore, the rebar tying machine 1C is equipped with an exhaust port 18C on the other side 10a2 of the main body 10A, rather than on the rear side 10a3 of the main body 10A. This ensures that when the rebar tying machine 1C is used horizontally, the exhaust port 18C faces sideways, and even when the rebar tying machine 1C is used downwards, the exhaust port 18C also faces sideways. This prevents dust, moisture, etc. from entering through the exhaust port 18C. In addition, the rebar tying machine 1C is equipped with a first air intake port 17Ca on the front side 10a4 of the main body 10A. This ensures that when the rebar tying machine 1C is used horizontally, the first air intake port 17Ca does not face upwards and is not exposed when the rebar tying machine 1C is viewed from above. Also, when the rebar tying machine 1C is used downwards, the first air intake port 17Ca faces downwards. This prevents dust, moisture, etc. from entering through the first air intake port 17Ca.

[0123] Furthermore, according to the third embodiment, the feed motor 31 and the motor 80 are positioned in the airflow CC between the first intake port 17Ca and the exhaust port 18C, so that both the feed motor 31 and the motor 80 can be efficiently cooled by the airflow CC.

[0124] Furthermore, in the third embodiment, since the exhaust port 18C is not provided on the lower surface 10a6 side of the main body 10A, it is possible to prevent the air exhausted from the exhaust port 18C from hitting the user's hands when the user grips the handle 11A and performs work. This prevents the user from feeling uncomfortable due to the air heated by the motor 80 hitting their hands, even when performing binding work in hot seasons such as summer, and prevents a decrease in work efficiency.

[0125] <Fourth Embodiment> The fourth embodiment differs from the first embodiment in that the fan 15A is located to the side of the motor 80, in that the fan 15D is located behind the motor 80. Regarding the configuration and operation of the rebar tying machine 1D in the fourth embodiment that are common to the rebar tying machine 1A in the first embodiment, redundant explanations will be omitted by referring to the description of the first embodiment.

[0126] Figure 7A is an internal configuration diagram viewed from the other side, showing an example of the overall configuration of the rebar tying machine according to the fourth embodiment. Figure 7B is an external perspective view viewed from the other side, showing an example of the overall configuration of the rebar tying machine according to the fourth embodiment.

[0127] As shown in Figures 7A and 7B, the rebar tying machine 1D includes, in addition to the wire feeding section 3A, curling section 5A, cutting section 6A, tying section 7A, main body section 10A, and handle section 11A described above, a fan 15D, an example of a blower, a first air intake port 17Da, a second air intake port 17Db, and an exhaust port 18D.

[0128] The fan 15D generates airflow through the main body 10A, cooling the motor 80 and feed motor 31, which generate heat when driven. The fan 15D is located on the rear surface 10a3 side of the main body 10A, which is the other side in the axial direction of the rotating shaft 72 than the motor 80, and is positioned behind the motor 80. More specifically, the fan 15D is positioned in the space enclosed by the rear surface of the motor 80, the operating section 19, and the upper and lower surfaces of the housing that constitute the main body 10A. For example, an axial flow fan, centrifugal fan, blower fan, etc., can be used as the fan 15D. The fan 15D is attached to a mounting part 15Da fixed at a predetermined position on the main body 10A. An opening (not shown) is formed in the mounting part 15Da at the position where the fan 15D is attached, and the intake port of the fan 15D communicates with the inside of the main body 10A through this opening.

[0129] The first air intake port 17Da draws outside air into the main body 10A by the airflow generated by the fan 15D. The first air intake port 17Da is located on the front surface 10a4 side of the main body 10A and is provided between the base end of the curl guide 50, which is the first guide, and the base end of the guided guide 51, which is the second guide. For example, the first air intake port 17Da can be formed by the gap between the wire locking body 70 and the housing that constitutes the main body 10A, or by the gap between the wire locking body 70 and the curl forming part 5A.

[0130] The second air intake port 17Db is provided in the gap between the trigger 12A and the main body 10A, and draws outside air into the main body 10A using the airflow generated by the fan 15D. Alternatively, the second air intake port 17Db may be formed in the gap between switches other than the trigger 12A, such as the binding force setting unit 19a or power switch 19b provided on the operating unit 19 located behind the motor 80 and the main body 10A.

[0131] The exhaust port 18D exhausts air drawn into the main body 10A from the first intake port 17Da, etc., to the outside. The exhaust port 18D is provided on the other side surface 10a2 of the main body 10A, which is an example of the other side in a second direction D2 that intersects the axial direction of the rotating shaft 72 and the direction in which the handle portion 11A extends. The exhaust port 18D is formed on the other side surface 10a2 of the main body 10A in the vicinity of the motor 80, at a position facing the other side of the motor 80. The exhaust port 18D is composed of multiple openings that penetrate the housing of the main body 10A in the thickness direction, and these openings face sideways and are formed in a vertical direction on the other side surface 10a2 of the main body 10A. The exhaust port 18D may also be composed of a single opening. Furthermore, the exhaust port 18D may be provided on one side surface 10a1 of the main body 10A opposite to the other side surface 10a2.

[0132] In the fourth embodiment, a first air intake port 17Da is provided on the front side of the main body 10A, and an exhaust port 18D is provided on the rear side of the main body 10A, with a feed motor 31 and a motor 80 arranged between the first air intake port 17Da and the exhaust port 18D.

[0133] When the fan 15D is driven in the rebar tying machine 1D, air is drawn into the main body 10A through the first air intake 17Da formed on the front surface 10a4 side of the main body 10A and the second air intake 17Db formed in the gap between the trigger 12A and the main body 10A. The air drawn in through the first air intake 17Da, etc., flows from the front to the rear of the main body 10A along the rotation axis 72 due to the air intake caused by the drive of the fan 15D, passing above, below, and to the left and right sides, which are the periphery of the feed motor 31 and motor 80. In this way, in the fourth embodiment, an airflow (air passage) CD is formed in the main body 10A from the front to the rear, as shown by the dashed line in Figure 7A. Air around the motor 80 is drawn in by the fan 15D. The air drawn in is transformed by the fan 15D from flowing axially to flowing laterally perpendicular to the axial direction, and is exhausted to the outside through the exhaust port 18D provided on the other side 10a2 of the main body 10A.

[0134] According to the rebar tying machine 1D of the fourth embodiment, air is drawn into the main body 10A from the outside through the first air intake port 17Da, and the air inside the main body 10A whose temperature has risen is exhausted to the outside through the exhaust port 18D, thereby suppressing the temperature rise inside the main body 10A. Therefore, the temperature rise of the motor 80 and the feed motor 31 can be suppressed. In particular, by providing the exhaust port 18D on the side of the motor 80 and the fan 15D in the main body 10A, when using the fan 15D that blows the inhaled air to the side, the airflow drawn in axially from the first air intake port 17Da is converted to a lateral flow, and the air can be efficiently exhausted from the exhaust port 18D on the side, thereby enhancing the effect of suppressing the temperature rise of the motor 80.

[0135] Furthermore, the rebar tying machine 1D is equipped with an exhaust port 18D on the other side 10a2 of the main body 10A, rather than on the rear side 10a3 of the main body 10A. This ensures that when the rebar tying machine 1D is used horizontally, the exhaust port 18D faces sideways, and even when the rebar tying machine 1D is used downwards, the exhaust port 18D also faces sideways. This prevents dust, moisture, etc. from entering through the exhaust port 18D. In addition, the rebar tying machine 1D is equipped with a first air intake port 17Da on the front end of the main body 10A. This ensures that when the rebar tying machine 1D is used horizontally, the first air intake port 17Da does not face upwards and is not exposed when viewed from above. Also, when the rebar tying machine 1D is used downwards, the first air intake port 17Da faces downwards. This prevents dust, moisture, etc. from entering through the first air intake port 17Da.

[0136] Furthermore, according to the fourth embodiment, the feed motor 31 and the motor 80 are positioned in the airflow CD between the first intake port 17Da and the exhaust port 18D, so that both the feed motor 31 and the motor 80 can be efficiently cooled by the airflow CD.

[0137] Furthermore, in the fourth embodiment, since the exhaust port 18D is not provided on the lower surface 10a6 side of the main body 10A, it is possible to prevent the air exhausted from the exhaust port 18D from hitting the user's hands when the user grips the handle 11A and performs work. As a result, even when performing binding work in hot seasons such as summer, it is possible to avoid the user feeling uncomfortable due to the air heated by the motor 80 etc. hitting the user's hands, and a decrease in work efficiency can be prevented.

[0138] <Fifth Embodiment> Figure 8A is an internal configuration diagram viewed from one side, showing an example of the overall configuration of the rebar tying machine of the fifth embodiment, and Figure 8B is an internal configuration diagram viewed from the other side, showing an example of the overall configuration of the rebar tying machine of the fifth embodiment. Figure 8C is an external perspective view viewed from one side, showing an example of the overall configuration of the rebar tying machine of the fifth embodiment, and Figure 8D is an external perspective view viewed from the other side, showing an example of the overall configuration of the rebar tying machine of the fifth embodiment.

[0139] As shown in Figures 8A to 8D, the rebar tying machine 1E includes, in addition to the wire feeding section 3A, curling section 5A, cutting section 6A, tying section 7A, main body section 10A, and handle section 11A described above, a fan 15E, a first air intake port 17Ea, a second air intake port 17Eb, and an exhaust port 18E, which are examples of blowers.

[0140] The fan 15E generates airflow through the main body 10A, cooling the motor 80 and feed motor 31, which generate heat when driven. The fan 15E is located on the front 10a4 side, which is one side in the axial direction of the rotating shaft 72 of the main body 10A, and is positioned in front of the feed motor 31. In this embodiment, as shown in Figures 8A and 8C, the feed motor 31 is housed inside a convex portion 16E, which is an example of a convex exterior portion that protrudes outward from one side 10a1 of the main body 10A. The fan 15E is located inside the convex portion 16E that constitutes the main body 10A, in front of the feed motor 31, that is, in the space formed between the feed motor 31 and the feed gear 30. For example, an axial flow fan, centrifugal fan, blower fan, etc., can be used as the fan 15E. The fan 15E is attached to a mounting portion 15Ea fixed at a predetermined position on the main body 10A. An opening (not shown) is formed in the mounting portion 15Ea at the position where the fan 15E is mounted, and the intake port of the fan 15E communicates with the inside of the main body portion 10A through this opening.

[0141] The first air intake port 17Ea draws outside air into the main body 10A through the airflow generated by the fan 15E. The first air intake port 17Ea is provided on the other side 10a2 of the main body 10A, which is an example of the other side in a second direction D2 that intersects the axial direction of the rotating shaft 72 and the direction in which the handle portion 11A extends. In this embodiment, as shown in Figure 8D, a cover 10E that protrudes slightly outward is attached to the other side 10a2 of the main body 10A, and the portion where the main body 10A and the cover 10E connect is a stepped portion 10Ea. The exhaust port 18E is formed in the stepped portion 10Ea of the cover 10E near the motor 80, at a position facing one side of the motor 80. Furthermore, the exhaust port 18E is composed of multiple openings that penetrate the housing of the main body 10A in the thickness direction, and these openings are oriented approximately to the side and are formed in the front-to-back direction on the other side surface 10a2 of the main body 10A. Note that the exhaust port 18E may also be composed of a single opening.

[0142] The second air intake port 17Eb is provided in the gap between the trigger 12A and the main body 10A, and draws outside air into the main body 10A using the airflow generated by the fan 15E. Alternatively, the second air intake port 17Eb may be formed in the gap between switches other than the trigger 12A, such as the binding force setting unit 19a or power switch 19b provided on the operating unit 19 located behind the motor 80 and the main body 10A. Furthermore, as described in the second embodiment above, the gap provided at the front end of the main body 10A may also be used as the air intake port.

[0143] The exhaust port 18E exhausts air drawn into the main body 10A from the first intake port 17Ea, etc., to the outside. The exhaust port 18E is provided on one side surface 10a1 of the main body 10A, which is an example of one side in a second direction D2 that intersects the axial direction of the rotating shaft 72 and the direction in which the handle portion 11A extends. In this embodiment, the exhaust port 18E is located in the front of the fan 15E and is provided on the front end surface 16Ea of a protrusion 16E that protrudes from one side surface 10a1 of the main body 10A, opposite to the side where the first intake port 17Ea is provided. The exhaust port 18E is composed of multiple openings that penetrate the housing constituting the protrusion 16E in the thickness direction, and these openings face approximately forward and are formed in the vertical direction of the front end surface 16Ea. The exhaust port 18E may also be composed of a single opening.

[0144] In the fifth embodiment, a first air intake port 17Ea is provided on the front side of the main body 10A, and an exhaust port 18E is also provided on the front side of the main body 10A, with a feed motor 31 and a motor 80 arranged between the first air intake port 17Ea and the exhaust port 18E.

[0145] When the fan 15E is driven in the rebar tying machine 1E, air is drawn into the main body 10A from the first air intake port 17Ea, etc., formed on the other side surface 10a2 of the main body 10A. The air drawn in from the first air intake port 17Ea, etc., flows from the rear to the front of the main body 10A along the rotation axis 72 due to the air intake caused by the drive of the fan 15E, and passes above, below, and to the left and right sides, which are the periphery of the feed motor 31 and motor 80. In this way, in the fifth embodiment, an airflow (air passage) CE is formed from the rear to the front of the main body 10A, as shown by the dashed lines in Figures 8A and 8B. The air around the motor 80 is exhausted to the outside from the exhaust port 18E provided on one side surface 10a1 of the main body 10A.

[0146] According to the fifth embodiment of the rebar tying machine 1E, air is drawn into the main body 10A from the outside through the first air intake port 17Ea, and the air whose temperature has risen inside the main body 10A is exhausted to the outside through the exhaust port 18E, thereby suppressing the temperature rise inside the main body 10A. As a result, the temperature rise of the motor 80 and the feed motor 31 can be suppressed. In particular, by providing the exhaust port 18E on one side surface 10a1 of the main body 10A near the location where the motor 80 is installed, an airflow CE passing around the motor 80 is more likely to occur, as shown by the dashed line in Figures 8A and 8B, thereby enhancing the effect of suppressing the temperature rise of the motor 80.

[0147] Furthermore, the rebar tying machine 1E is configured such that the feed motor 31 protrudes from one side 10a1 of the main body 10A, and one side 10a1 of the main body 10A has a protruding portion. For this reason, even if the fan 15E is installed on one side 10a1 of the main body 10A, there will be little difference in the user experience.

[0148] Furthermore, the rebar tying machine 1E is equipped with an exhaust port 18E on one side 10a1 of the main body 10A, rather than on the rear side 10a3 of the main body 10A. This ensures that when the rebar tying machine 1E is used horizontally, the exhaust port 18E faces approximately to the side, and even when the rebar tying machine 1E is used downwards, the exhaust port 18E also faces to the side. This prevents dust, moisture, etc. from entering through the exhaust port 18E. In addition, the rebar tying machine 1E is equipped with a first air intake port 17Ea on the other side 10a2 of the main body 10A. This ensures that when the rebar tying machine 1E is used horizontally, the first air intake port 17Ea does not face upwards and is not exposed when viewed from above. Also, when the rebar tying machine 1E is used downwards, the first air intake port 17Ea faces downwards. This prevents dust, moisture, and other contaminants from entering through the first air intake port 17Ea.

[0149] Furthermore, according to the fifth embodiment, the feed motor 31 and the motor 80 are positioned in the airflow CE between the first intake port 17Ea and the exhaust port 18E, so that both the feed motor 31 and the motor 80 can be efficiently cooled by the airflow CE.

[0150] Furthermore, in the fifth embodiment, since the exhaust port 18E is not provided on the lower surface 10a6 side of the main body 10A, it is possible to prevent the air exhausted from the exhaust port 18E from hitting the user's hands when the user grips the handle 11A and performs work. As a result, even when performing binding work in hot seasons such as summer, it is possible to avoid the user feeling uncomfortable due to the air heated by the motor 80 hitting their hands, and thus prevent a decrease in work efficiency.

[0151] Fans 15A, 15B, 15C, 15D, and 15E may be configured to be driven continuously while the power is on, or they may be configured to be driven only when the trigger 12A is operated. For example, their drive may be controlled by the control unit 14A. Alternatively, a temperature sensor may be provided to detect the temperature inside the main unit 10A, and the drive status and output may be controlled according to the temperature. Furthermore, in the first to fifth embodiments described above, examples were given in which each of the fans 15A, 15B, 15C, 15D, and 15E is provided individually inside the main unit 10A, but the invention is not limited to this. For example, two or more fans from among fans 15A, 15B, 15C, 15D, and 15E may be combined and installed inside the main unit 10A. In addition, fans 15B, 15C, 15D, and 15E may also be provided with filters to suppress the entry of foreign matter such as dust, dirt, and moisture into the main unit 10A, similar to fan 15A. [Explanation of symbols]

[0152] 1A, 1B, 1C, 1D, 1E... Rebar tying machine, 10A... Main body, one side (one side in the second direction)... 10a1, the other side (the other side in the second direction)... 10a2, top surface (the other side in the first direction)... 10a5, bottom surface (one side in the first direction)... 10a6, 10c... Recess, 11A... Handle part, 12A...Trigger (operating part), 15A, 15B, 15C, 15D, 15E...Fan (blower), 15Aa, 15Ba, 15Ca, 15Da, 15Ea...Mounting part, 16A...Cover (convex outer part), 16E...Convex part (convex outer part), 17Aa, 17Ba, 17Ca, 17Da, 17Ea...First air intake, 17A b, 17Bb, 17Cb, 17Db, 17Eb...Second air intake, 17c...Filter, 18A, 18B, 18C, 18D, 18E...Exhaust port, 18a...Filter, 19...Operating unit, 19a...Binding force setting unit, 19b...Power switch, 2A...Magazine, 20...Reel, 3A...Wire feeding unit, 30...Feed gear, 31...Feed motor (first drive unit), 5A...Curl forming unit, 50...Curl guide (first guide), 51...Guiding guide (second guide), 6A...Cutting unit, 7A...Binding unit, 70...Wire locking body, 72...Rotating shaft, 8A...Drive unit, 80...Motor (other drive unit), W...Wire

Claims

1. The main body and A wire feeding section that feeds the wire, A curl-forming section that forms a path for winding the wire fed by the wire feeding section around the bundled object, A binding unit that is driven by a drive unit and twists the wire that is wound around the object to be bound, A blower that generates airflow passing through the inside of the main body, It includes a second air intake port through which external air is drawn into the main body, The second air intake port is exposed to the outside from the main body and is formed in the gap between the main body and a movable member that moves relative to the main body. Binding machine.

2. The second air intake port is provided with a filter to prevent foreign matter from entering the main body. The binding machine according to claim 1.

3. The fastening portion includes a rotating shaft that operates a wire locking body to which the wire is locked, A handle portion provided on one side of the main body portion in a first direction intersecting the axial direction of the rotation shaft, The main body is provided on one or the other side in the axial direction of the rotation shaft and in a second direction intersecting the first direction, and includes an exhaust port for exhausting air generated by the blower and passing through the inside of the main body. The binding machine according to claim 1.

4. The exhaust port is provided with a filter to prevent foreign matter from entering the main body. The binding machine according to claim 3.

5. The fastening portion includes a rotating shaft that operates a wire locking body to which the wire is locked, The main body is provided with a handle portion on one side in a first direction intersecting the axial direction of the rotation shaft, The blower is provided on one side or the other side of the main body in a second direction intersecting the axial direction of the rotation shaft and the first direction with respect to the drive unit. The binding machine according to claim 1.

6. The fastening portion includes a rotating shaft that operates a wire locking body to which the wire is locked, The main body is provided with a handle portion on one side in a first direction intersecting the axial direction of the rotation shaft, The blower is provided on one side or the other side of the main body in the first direction relative to the drive unit. The binding machine according to claim 1.

7. The fastening portion includes a rotating shaft that operates a wire locking body to which the wire is locked, The blower is provided on one side or the other side of the rotation shaft in the axial direction relative to the drive unit. The binding machine according to claim 1.

8. It is equipped with a first air intake port into which air passing through the inside of the main body is drawn in, The first intake port is provided on one side or the other side of the main body opposite to the side on which the exhaust port is provided. The binding machine according to claim 3.

9. The aforementioned one side or the aforementioned other side is the side of the main body. The binding machine according to claim 8.

10. The fastening portion includes a rotating shaft that operates a wire locking body to which the wire is locked, The main body is provided with a handle portion that extends to one side in a first direction intersecting the axial direction of the rotation shaft, The movable member is a trigger provided on the handle portion of the main body. The binding machine according to claim 1.

11. The fastening portion includes a rotating shaft that operates a wire locking body to which the wire is locked, The movable member is a power switch provided on the end face of the main body on the side opposite to the curl-forming portion, which is provided on one side in the axial direction of the rotation shaft relative to the drive unit. The binding machine according to claim 1.

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