Reinforcement binding machine

Abstract

To provide technology that can suppress detachment of wire from a guide unit.SOLUTION: A reinforcement binding machine comprises: a feeding unit for feeding wire; a guide unit for guiding the wire around reinforcements; a reel supporting member for rotatably supporting a reel that comprises the wire around a reel rotation axis; a wire guide member that is disposed between the feeding unit and the reel supporting member and guides the wire toward the feeding unit; and an abutment body that is capable of coming into contact with the wire in a direction in which the reel rotation axis extends, between the wire guide member and the reel supporting member.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present specification relates to a rebar binding machine. [Background technology]

[0002] Patent Document 1 discloses a rebar tying machine that includes a feed unit that feeds wire, a guide unit that guides the wire around the rebar, a reel support member that supports a reel equipped with the wire so that the reel can rotate about the reel rotation axis, a wire guide member that is disposed between the feed unit and the reel support member and guides the wire toward the feed unit, and a contact body that can contact the wire in the front-rear direction. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-25700 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-described rebar tying machine, the abutment body abuts against the wire in the front-rear direction when the wire slackens, thereby preventing the wire from bending or breaking in the front-rear direction. However, with this configuration, when the wire is guided by the wire guide member, the abutment body cannot sufficiently regulate the path along which the wire is guided by the wire guide member. This causes variations in the bending tendency of the wire. As a result, the variation in the trajectory of the wire fed from the feed unit becomes stable, and the wire may become dislodged from the guide unit. The present specification aims to provide a technology that can prevent the wire from becoming dislodged from the guide unit. [Means for solving the problem]

[0005] The rebar tying machine disclosed in this specification comprises a feed unit that feeds wire, a guide unit that guides the wire around the rebar, a reel support member that supports a reel carrying the wire so that it can rotate around the reel rotation axis, a wire guide member that is arranged between the feed unit and the reel support member and guides the wire toward the feed unit, and an abutment body that can abut against the wire in the direction in which the reel rotation axis extends between the wire guide member and the reel support member.

[0006] According to the above configuration, the abutment body abuts between the wire guide member and the reel support member in the direction in which the wire and the reel rotation axis extend. Therefore, the path along which the wire is guided by the wire guide member is restricted by the abutment body in the direction in which the reel rotation axis extends. As a result, it is possible to suppress variations in the bending of the wire. This suppresses variations in the trajectory of the wire fed from the feed unit, and prevents the wire from coming off the guide unit.

[0007] The reinforcing bar binding machine disclosed in this specification includes a feeding unit that feeds a wire, a guide unit that guides the wire around the reinforcing bar, a reel support member that rotatably supports a reel equipped with the wire about a reel rotation axis, a wire guide member that is disposed between the feeding unit and the reel support member and guides the wire toward the feeding unit, an abutment body that abuts against the wire between the wire guide member and the reel support member, and a reel stopper that is switchable between a prohibiting state that prohibits the reel from being removed from the reel support member and an allowing state that allows the reel to be removed from the reel support member. The reel stopper moves in a first direction when switched from the allowing state to the prohibiting state, and the abutment body is disposed in the reel stopper and can abut against the wire in the first direction between the wire guide member and the reel support member when the reel stopper is in the prohibiting state.

[0008] According to the above configuration, the abutment body abuts against the wire in the first direction between the wire guide member and the reel support member. Therefore, the path along which the wire is guided by the wire guide member is restricted in the first direction by the abutment body. As a result, it is possible to suppress variations in the bending of the wire. This suppresses variations in the trajectory of the wire fed from the feed unit, and prevents the wire from coming off the guide unit.

[0009] The reinforcing bar binding machine disclosed in this specification includes a feed unit that feeds a wire, a guide unit that guides the wire around the reinforcing bar, a reel support member that supports a reel equipped with the wire so that the reel can rotate about the reel rotation axis, a wire guide member that is disposed between the feed unit and the reel support member and guides the wire toward the feed unit, a contact body that contacts the wire between the wire guide member and the reel support member, and a reel stopper that can be switched between a prohibiting state that prohibits the reel from being removed from the reel support member and an allowing state that allows the reel to be removed from the reel support member. The wire guide member has a wire guide hole through which the wire passes. When the reinforcing bar tying machine is viewed in a direction along a line connecting the center of the entrance to the wire guide hole and the center of the exit of the wire guide hole, the abutment body blocks part of the entrance to the wire guide hole when the reel stopper is in a prohibited state, and does not block the entrance to the wire guide hole when the reel stopper is in an allowed state, or blocks part of the entrance so that the area of ​​the area of ​​the entrance blocked by the abutment body is smaller than the area of ​​the area of ​​the entrance blocked by the abutment body when the reel stopper is in a prohibited state.

[0010] According to the above configuration, the abutment body blocks a portion of the entrance of the wire guide hole when the reel stopper is in the prohibiting state. Therefore, the path of the wire through the wire guide hole is restricted by the abutment body. As a result, it is possible to suppress variations in the bending of the wire. This suppresses variations in the trajectory of the wire fed from the feeding unit and prevents the wire from coming off the guide unit. Furthermore, when the reel stopper is in the allowing state, the abutment body does not block the entrance of the wire guide hole, or the area of ​​the entrance blocked by the abutment body is smaller than the area of ​​the entrance blocked by the abutment body when the reel stopper is in the prohibiting state. This makes it easier to insert the wire into the entrance of the wire guide hole.

[0011] The rebar tying machine disclosed in this specification includes a feed unit that feeds a wire, a guide unit that guides the wire around a rebar, a reel support member that rotatably supports a reel equipped with the wire about a reel rotation axis, and a wire guide wall that is disposed between the feed unit and the reel support member and guides the wire toward the feed unit. The reel includes a bobbin that includes a body portion around which the wire is wound, a first flange portion disposed at one end of the body portion in the direction in which the reel rotation axis extends, and a second flange portion disposed at the other end of the body portion in the direction in which the reel rotation axis extends. The wire guide wall includes a first wire abutment portion that abuts the wire when the wire is unwound from a position adjacent to the first flange portion, and a second wire abutment portion that abuts the wire when the wire is unwound from a position adjacent to the second flange portion. When the direction in which the wire heading toward the feeding unit passes through the wire guide wall is defined as the second direction, and the direction opposite to the second direction is defined as the third direction, each of the first wire abutment portion and the second wire abutment portion is located in the third direction when viewed from an imaginary plane that bisects the wire guide wall in the second direction and the third direction.

[0012] According to the above configuration, the path along which the wire is guided by the wire guide wall is regulated by the first wire abutment portion and the second wire abutment portion. As a result, it is possible to suppress variations in the bending tendency of the wire. This suppresses variations in the trajectory of the wire fed from the feed unit, and prevents the wire from coming off the guide unit. Furthermore, each of the first wire abutment portion and the second wire abutment portion is located in the third direction (i.e., the direction approaching the bobbin) as viewed from an imaginary plane that bisects the wire guide wall in the second and third directions. Therefore, each of the first wire abutment portion and the second wire abutment portion abuts the wire at a position close to the bobbin. This allows the trajectory of the wire drawn out from the bobbin to be stabilized immediately after the wire is drawn out from the bobbin. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a perspective view of a reinforcing bar binding machine 2 of a first embodiment. [Figure 2] 1 is a left side view of the reinforcing bar binding machine 2 of the first embodiment with the reel cover 6 and the left housing 10 removed. FIG. [Figure 3] 2 is a cross-sectional view of a reel support part 22 of the reinforcing bar binding machine 2 of the first embodiment and its vicinity. FIG. [Figure 4] 1 is a perspective view of the reinforcing bar binding machine 2 of the first embodiment when the reel cover 6 is in an allowable state. FIG. [Figure 5] 2 is a front cross-sectional view of a wire guide member 52 and its vicinity when the reel cover 6 is in a prohibited state in the reinforcing bar binding machine 2 of the first embodiment. FIG. [Figure 6] FIG. 1 is a front view of a reel RL, a feed unit 50, a wire guide member 52, a guide unit 54, a twisting unit 58, and a contact body 130 of the first embodiment. [Figure 7] FIG. 2 is a cross-sectional view of a torsion unit 58 and a rotation limiting unit 60 of the first embodiment. [Figure 8] 1 is a right cross-sectional view of a side plate 106, a slide unit 108, and a detection sensor 110 according to the first embodiment. [Figure 9]2 is a top cross-sectional view of a slide plate 112 and its vicinity in the reinforcing bar binding machine 2 of the first embodiment. FIG. [Figure 10] 2 is a left cross-sectional view of the wire guide member 52 and its vicinity when the reel cover 6 is in the prohibited state in the reinforcing bar binding machine 2 of the first embodiment. FIG. [Figure 11] 2 is a front cross-sectional view of a wire guide member 52 and its vicinity when a reel cover 6 is in an allowable state in the reinforcing bar binding machine 2 of the first embodiment. FIG. [Figure 12] FIG. 2 is a front view of the wire guide member 52, the contact body 130, and the reel RL in the reinforcing bar binding machine 2 of the first embodiment. [Figure 13] 10 is a front cross-sectional view of a wire guide member 52 and its vicinity when the reel cover 6 is in a prohibited state in the reinforcing bar binding machine 2 of the second embodiment. FIG. [Figure 14] 10 is a left cross-sectional view of the wire guide member 52 and its vicinity when the reel cover 6 is in the prohibited state in the reinforcing bar binding machine 2 of the third embodiment. FIG. [Figure 15] 10 is a front cross-sectional view of a wire guide member 52 and its vicinity when the reel cover 6 is in an allowable state in the reinforcing bar binding machine 2 of the fourth embodiment. FIG. [Figure 16] 10 is a front cross-sectional view of a wire guide member 52 and its vicinity when the reel cover 6 is in a prohibited state in the reinforcing bar binding machine 2 of the fourth embodiment. FIG. [Figure 17] 10 is a left cross-sectional view of a wire guide member 52 and its vicinity when the reel cover 6 is in a prohibited state in the reinforcing bar binding machine 2 of the fifth embodiment. FIG. [Figure 18] FIG. 13 is a perspective view of a contact body 130 and its vicinity in a reinforcing bar binding machine 2 of a sixth embodiment. [Figure 19] 13 is a front cross-sectional view of a wire guide member 52 and its vicinity when the reel cover 6 is in a prohibited state in the reinforcing bar binding machine 2 of the seventh embodiment. FIG. [Figure 20] 13 is a front cross-sectional view of a wire guide wall 404 and its vicinity when the reel cover 6 is in a prohibited state in the reinforcing bar binding machine 2 of the eighth embodiment. FIG. [Figure 21]13 is a perspective view of the wire guide wall 404 and its vicinity in the reinforcing bar binding machine 2 of the eighth embodiment, as viewed from the front left below. FIG. [Figure 22] FIG. 13 is a diagram showing the configuration of a contact body 430 of a reinforcing bar binding machine 2 of an eighth embodiment. [Figure 23] 13 is a front cross-sectional view of a wire guide wall 504 and its vicinity when the reel cover 6 is in a prohibited state in the reinforcing bar binding machine 2 of the ninth embodiment. FIG. [Figure 24] FIG. 13 is a perspective view of the wire guide wall 504 and its vicinity in the reinforcing bar binding machine 2 of the ninth embodiment, as viewed from the front left below. [Figure 25] 19 is a front cross-sectional view of the wire guide wall 604 and its vicinity when the reel cover 6 is in the prohibited state in the reinforcing bar binding machine 2 of the tenth embodiment. FIG. [Figure 26] FIG. 20 is a perspective view of the wire guide wall 604 and its vicinity in the reinforcing bar binding machine 2 of the tenth embodiment, as viewed from the front left below. [Figure 27] 19 is a diagram showing how the wire W drawn out from a position adjacent to the left flange 28L is guided by the wire guide wall 604 in the reinforcing bar binding machine 2 of the tenth embodiment. FIG. [Figure 28] 19 is a diagram showing how the wire W drawn out from a position adjacent to the right flange 28R is guided by the wire guide wall 604 in the reinforcing bar binding machine 2 of the tenth embodiment. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0014] Representative, non-limiting examples of the present invention will now be described in detail with reference to the drawings. This detailed description is intended simply to provide those skilled in the art with details for implementing preferred examples of the present invention, and is not intended to limit the scope of the present invention. Additionally, additional features and inventions disclosed below can be used separately or together with other features and inventions to provide further improved rebar tying machines, methods of manufacturing and using the same.

[0015] Furthermore, the combinations of features and steps disclosed in the following detailed description are not essential to practicing the invention in its broadest sense, but are described solely to specifically illustrate exemplary embodiments of the invention. Furthermore, the various features of the exemplary embodiments described above and below, and those described in the independent and dependent claims, do not necessarily have to be combined in the exact embodiments described herein, or in the exact order listed, to provide additional and useful embodiments of the invention.

[0016] All features described in this specification and / or claims are intended to be disclosed individually and independently of one another as limitations on the original disclosure and claimed particulars, apart from any configuration of features described in the examples and / or claims. Furthermore, all numerical ranges and group or aggregation descriptions are intended to disclose intermediate configurations thereof as limitations on the original disclosure and claimed particulars.

[0017] The rebar tying machine disclosed in this specification comprises a feed unit that feeds wire, a guide unit that guides the wire around the rebar, a reel support member that supports a reel carrying the wire so that it can rotate around the reel rotation axis, a wire guide member that is arranged between the feed unit and the reel support member and guides the wire toward the feed unit, and an abutment body that can abut against the wire in the direction in which the reel rotation axis extends between the wire guide member and the reel support member.

[0018] In one or more embodiments, the rebar binding machine may further include a reel stopper switchable between a prohibiting state that prohibits the reel from being removed from the reel support member and an allowing state that allows the reel to be removed from the reel support member. The abutment body may be disposed on the reel stopper and may be able to abut against the wire when the reel stopper is in the prohibiting state.

[0019] According to the above configuration, by switching the reel stopper from the permissive state to the inhibited state, the abutting body can be brought into a state in which it can abut against the wire.

[0020] In one or more embodiments, the reel stopper may move in a first direction when switching from the allowing state to the prohibiting state, and the abutment body may abut against the wire in the first direction between the wire guide member and the reel support member when the reel stopper is in the prohibiting state.

[0021] According to the above configuration, the path along which the wire is guided by the wire guide member is restricted in the first direction by the abutment body. This reduces variations in the bending of the wire. This reduces variations in the trajectory of the wire fed from the feed unit and prevents the wire from coming off the guide unit.

[0022] In one or more embodiments, the wire guide member may have a wire guide hole through which the wire passes. When the rebar tie machine is viewed in a direction along a line connecting the center of the entrance of the wire guide hole and the center of the exit of the wire guide hole, the abutment may block a portion of the entrance of the wire guide hole when the reel stopper is in the prohibiting state and may not block the entrance of the wire guide hole when the reel stopper is in the allowing state, or may block a portion of the entrance so that the area of ​​the area of ​​the entrance blocked by the abutment is smaller than the area of ​​the area of ​​the entrance blocked by the abutment when the reel stopper is in the prohibiting state.

[0023] According to the above configuration, the abutment member blocks a portion of the entrance of the wire guide hole when the reel stopper is in the prohibiting state. Therefore, the abutment member restricts the path of the wire through the wire guide hole. As a result, it is possible to suppress variations in the bending of the wire. This suppresses variations in the trajectory of the wire fed from the feeding unit and prevents the wire from coming off the guide unit. Furthermore, it is possible to make it easier for the user to insert the wire into the entrance of the wire guide hole when the reel stopper is in the allowing state.

[0024] In one or more embodiments, the rebar binding machine may further include a guide surface disposed along the periphery of the entrance of the wire guide hole to guide the wire into the entrance of the wire guide hole. The guide surface may face the abutment when the reel stopper is in the inhibited state.

[0025] According to the above configuration, the guide surface can easily guide the wire to the entrance of the wire guide hole.

[0026] In one or more embodiments, the rebar binding machine may further include a first guide wall having a guide surface formed thereon and separate from the wire guide member.

[0027] According to the above configuration, the degree of freedom in designing the guide surface can be increased.

[0028] In one or more embodiments, the guiding surface may be formed on the wire guiding member.

[0029] According to the above configuration, the number of components of the reinforcing bar binding machine can be reduced.

[0030] In one or more embodiments, the abutment may block an area of ​​50% or more of the opening area of ​​the entrance of the wire guide hole when the rebar tying machine is viewed in a direction along a line connecting the center of the entrance of the wire guide hole and the center of the exit of the wire guide hole with the reel stopper in the inhibited state.

[0031] According to the above configuration, the abutment body is more likely to abut against the wire. Furthermore, the abutment body can more effectively regulate the path along which the wire is guided by the wire guide member. This can further reduce variations in the bending of the wire. This can further reduce variations in the path of the wire fed from the feed unit, and can further reduce the wire coming off the guide unit.

[0032] In one or more embodiments, the wire guide hole may have a frustum shape with an entrance opening area larger than an exit opening area, and the abutment may block the entrance such that, when the reel stopper is in the inhibited state, the area of ​​the entrance not blocked by the abutment is equal to or smaller than the exit opening area.

[0033] According to the above configuration, the abutment body is more likely to abut against the wire. Furthermore, the abutment body can more effectively regulate the path along which the wire is guided by the wire guide member. This can further reduce variations in the bending of the wire. This can further reduce variations in the path of the wire fed from the feed unit, and can further reduce the wire coming off the guide unit.

[0034] In one or more embodiments, the abutment may be rotatable relative to the reel stop.

[0035] According to the above configuration, it is possible to suppress wear of the outer surface of the abutting body due to sliding contact with the wire.

[0036] In one or more embodiments, the rebar tying machine may further include a housing that supports the reel stopper so that the reel stopper can be switched between a prohibiting state and an allowing state. The abutment body may include a rotatable main body and a shaft that penetrates the main body and is supported by the reel stopper. When the reel stopper is in the prohibiting state, the shaft may be able to abut against the housing while penetrating the main body in a direction in which the shaft penetrates the main body.

[0037] According to the above configuration, when the reel stopper is in the prohibited state, it is possible to prevent the shaft portion from coming out of the main body portion, and thereby to prevent the abutment body from coming off the reel stopper when the reel stopper is in the prohibited state.

[0038] In one or more embodiments, the abutment may be a roller having a larger diameter at each end of the abutment than at the center of the abutment.

[0039] According to the above configuration, the wire passes through the center of the abutment body and a position in its vicinity. Therefore, the path along which the wire is guided by the wire guide member can be more regulated by using the abutment body. As a result, the variation in the bending tendency of the wire can be more effectively suppressed. This reduces the variation in the trajectory of the wire fed from the feed unit, and more effectively prevents the wire from coming off the guide unit.

[0040] In one or more embodiments, the abutment may be integrally formed with the reel stopper.

[0041] According to the above configuration, the number of components of the reinforcing bar binding machine can be reduced.

[0042] In one or more embodiments, the rebar binding machine may further include a reel stopper switchable between a prohibiting state that prohibits the reel from being removed from the reel support member and an allowing state that allows the reel to be removed from the reel support member, a housing that supports the reel stopper switchably between the prohibiting state and the allowing state and that movably supports the abutment body, and an operating member that is supported by the reel stopper and operates the abutment body. The operating member may operate the abutment body when the reel stopper switches from the allowing state to the prohibiting state, and switch the abutment body from a non-abutment state in which it does not abut against the wire to an abutment state in which it can abut against the wire.

[0043] According to the above configuration, the user can switch the abutment body from the non-abutment state to the abutment state by operating the reel stopper without directly operating the operating member.

[0044] In one or more embodiments, the abutment may be made of a metallic material.

[0045] According to the above configuration, it is possible to suppress wear of the contact body due to contact with the wire.

[0046] The rebar tying machine disclosed in this specification includes a feed unit that feeds a wire, a guide unit that guides the wire around a rebar, a reel support member that rotatably supports a reel equipped with the wire about a reel rotation axis, and a wire guide wall that is disposed between the feed unit and the reel support member and guides the wire toward the feed unit. The reel includes a bobbin that includes a body portion around which the wire is wound, a first flange portion disposed at one end of the body portion in the direction in which the reel rotation axis extends, and a second flange portion disposed at the other end of the body portion in the direction in which the reel rotation axis extends. The wire guide wall includes a first wire abutment portion that abuts the wire when the wire is unwound from a position adjacent to the first flange portion, and a second wire abutment portion that abuts the wire when the wire is unwound from a position adjacent to the second flange portion. When the direction in which the wire heading toward the feeding unit passes through the wire guide wall is defined as the second direction, and the direction opposite to the second direction is defined as the third direction, each of the first wire abutment portion and the second wire abutment portion is located in the third direction when viewed from an imaginary plane that bisects the wire guide wall in the second direction and the third direction.

[0047] In one or more embodiments, when a direction from the second flange to the first flange along the extension direction of the reel rotation shaft is defined as a fourth direction and a direction from the first flange to the second flange along the extension direction of the reel rotation shaft is defined as a fifth direction, an end of the wire guide wall in the third direction, which is located in the fourth direction as seen from the wire passing through the wire guide wall, may function as the first wire abutment. An end of the wire guide wall in the third direction, which is located in the fifth direction as seen from the wire passing through the wire guide wall, may function as the second wire abutment.

[0048] According to the above configuration, the first wire abutment portion and the second wire abutment portion are each positioned as close as possible to the bobbin within the wire guide wall. Therefore, the first wire abutment portion and the second wire abutment portion each abut the wire at a position close to the bobbin. This makes it possible to stabilize the trajectory of the wire drawn out from the bobbin immediately after the wire is drawn out from the bobbin.

[0049] (First Example) As shown in FIG. 1, the rebar binding machine 2 is a handheld device. The rebar binding machine 2 uses a wire W to bind multiple rebars R. The rebar binding machine 2 uses wires W of various diameters (e.g., 0.5 mm to 2.5 mm) depending on the diameter of the rebars R to be bound. For example, when binding thin rebars R having a diameter of 16 mm or less (e.g., 16 mm), a wire W having a diameter of 1.6 mm or less (e.g., 0.8 mm) is used, and when binding thick rebars R having a diameter greater than 16 mm (e.g., 25 mm or 32 mm), a wire W having a diameter greater than 1.6 mm (e.g., 2.0 mm) is used. Hereinafter, the longitudinal direction of the twisting unit 58 (see FIG. 2) will be referred to as the front-rear direction, the direction perpendicular to the front-rear direction will be referred to as the up-down direction, and the direction perpendicular to the front-rear direction and the up-down direction will be referred to as the left-right direction.

[0050] The rebar binding machine 2 includes a main body housing 4, a reel cover 6, and a battery pack BP. The main body housing 4 and the reel cover 6 are made of, for example, a resin material. The main body housing 4 includes a right housing 8 that defines the outer shape of the right half of the main body housing 4, and a left housing 10 that defines the outer shape of the left half of the main body housing 4.

[0051] The main body housing 4 includes a twisting unit accommodating section 14, a grip section 16, a battery attachment section 18, a feeding unit accommodating section 20, and a reel support section 22. The twisting unit accommodating section 14, the grip section 16, and the battery attachment section 18 are formed by the right housing 8 and the left housing 10. The feeding unit accommodating section 20 and the reel support section 22 are formed by the right housing 8, the left housing 10, and the reel cover 6.

[0052] As shown in Fig. 2, the twisting unit housing 14 extends in the front-to-rear direction. The grip part 16 is disposed below the rear part of the twisting unit housing 14. The grip part 16 is held by a user. A trigger 23 is attached to the upper front part of the grip part 16 so as to be retractable. When the trigger 23 is operated by a user, the rebar binding machine 2 binds multiple rebars R using the wire W.

[0053] The battery attachment portion 18 is disposed below the grip portion 16. The battery pack BP is detachably attached to the lower end of the battery attachment portion 18. The battery pack BP includes a secondary battery such as a lithium-ion battery. A control circuit board 24 is housed in the battery attachment portion 18. The control circuit board 24 performs a bundling process for bundling multiple reinforcing bars R using wire W.

[0054] The feeding unit accommodating section 20 is disposed below the front portion of the twisting unit accommodating section 14. The feeding unit accommodating section 20 is disposed in front of the grip section 16.

[0055] The reel support portion 22 is disposed below the feeding unit housing portion 20. In FIG. 2, the reel support portion 22 is shown by a dashed line. The reel support portion 22 is disposed forward of the grip portion 16, the battery attachment portion 18, and the battery pack BP. The reel support portion 22 is connected to the front end of the battery attachment portion 18. As shown in FIG. 3, the reel support portion 22 can accommodate a reel RL. The reel RL includes a wire W and a bobbin 26. The bobbin 26 includes a body portion 27 around which the wire W is wound, and a pair of flange portions 28 disposed on both ends of the body portion 27.

[0056] The reel support portion 22 includes a base member 30 and a reel support member 32. The base member 30 is made up of the left housing 10. The base member 30 has a reel accommodating space 36 therein. The left end of the base member 30 is open.

[0057] The reel support member 32 is disposed in the reel storage space 36. The reel support member 32 extends leftward from the base member 30. The reel support member 32 is inserted into the body portion 27. By inserting the reel support member 32 into the body portion 27, the reel RL is stored in the reel storage space 36. The reel support member 32 supports the reel RL rotatably about a reel rotation axis AX1. The reel rotation axis AX1 extends left-right.

[0058] As shown in FIG. 1, the reel cover 6 is rotatably supported by the left housing 10. In this embodiment, the reel cover 6 is supported by the left housing 10 of the feeding unit accommodating section 20. The reel cover 6 is rotatable around a cover rotation axis AX2. By rotating the reel cover 6, the reel cover 6 can be switched between a prohibited state and an allowed state (see FIG. 4). The cover rotation axis AX2 is located above the battery mounting section 18 and the reel rotation axis AX1 (see FIG. 2).

[0059] As shown in FIG. 3, the reel cover 6 is located at the first position when in the prohibited state. At this time, the reel storage space 36 is closed by the reel cover 6. This prevents the reel RL from being detached from the reel support member 32, i.e., the reel RL from slipping out of the reel storage space 36. As shown in FIG. 4, the reel cover 6 is located at the second position when in the permitted state. At this time, the reel storage space 36 is opened. This allows the reel RL to be detached from the reel support member 32 (see FIG. 3), i.e., the reel RL is allowed to slip out of the reel storage space 36. With the lock lever 40 pressed in, the reel cover 6 rotates from the prohibited state in the opening direction D1 (see FIG. 3) to the second position. Furthermore, the reel cover 6 rotates from the permitted state in the closing direction D2 (see FIG. 3) to the first position. The closing direction D2 is the direction opposite to the opening direction D1.

[0060] As shown in FIG. 2, the rebar binding machine 2 further includes a feeding unit 50, a wire guide member 52, a guide unit 54, a cutting unit 56, a twisting unit 58, and a rotation limiting unit 60.

[0061] The feed unit 50 is accommodated in the feed unit accommodating section 20. The feed unit 50 is supported by the main body housing 4. As shown in FIG. 5, the feed unit 50 includes a feed motor 66 (see FIG. 2), a transmission roller 68, a first roller 70, and a second roller 72.

[0062] As shown in Fig. 2, the feed motor 66 is rotated by power supplied from the battery pack BP. The feed motor 66 is, for example, a brushless motor. When the feed motor 66 rotates, the transmission roller 68 (see Fig. 5) rotates. The transmission roller 68 is, for example, a spur gear.

[0063] 5, the first roller 70 is, for example, a spur gear. The first roller 70 is engaged with the transmission roller 68. Therefore, when the transmission roller 68 rotates, the first roller 70 rotates around the first rotation axis AX3.

[0064] The second roller 72 is, for example, a spur gear. The second roller 72 is configured to mesh with the first roller 70. When the first roller 70 rotates while the second roller 72 is meshed with it, the second roller 72 rotates about the second rotation axis AX4. The second rotation axis AX4 is approximately parallel to the first rotation axis AX3. When the second roller 72 is disposed between the first roller 70 and the second roller 72 while meshing with it, the wire W is sandwiched between the first roller 70 and the second roller 72. When the first roller 70 rotates in the forward direction in this state, the wire W is pulled out from the bobbin 26 (see FIG. 3) and fed toward the guide unit 54 (see FIG. 2). When the first roller 70 rotates in the reverse direction in this state, the wire W is pulled back toward the bobbin 26.

[0065] As shown in FIG. 2, the wire guide member 52 is housed in the feeding unit housing 20. The wire guide member 52 is supported by the main housing 4. The wire guide member 52 is disposed between the first roller 70 and the reel support member 32. As shown in FIG. 5, the wire guide member 52 has a wire guide hole 76 that penetrates the wire guide member 52 in the longitudinal direction of the wire guide member 52. The wire guide hole 76 has a generally truncated cone shape. The wire guide hole 76 extends forward and upward. The wire guide hole 76 has an entrance 78 located at one end of the wire guide hole 76 and an exit 80 located at the other end of the wire guide hole 76. The opening area of ​​the entrance 78 is larger than the opening area of ​​the exit 80. After being drawn out from the bobbin 26, the wire W enters the wire guide hole 76 through the entrance 78, passes through the wire guide hole 76, and is then fed from the exit 80 to the first roller 70 and the second roller 72. The wire W is guided toward the feeding unit 50 by the wire guide member 52 .

[0066] As shown in FIG. 6 , when the rebar binding machine 2 is viewed from the front side in the left-right direction in which the reel rotation axis AX1 extends, the position of the left-right center of the wire guide hole 76 is substantially the same as the position of the center 78a of the entrance 78 and the position of the center 80a of the exit 80. The left-right center of the wire guide hole 76 is located between the pair of flanges 28. Here, being located between the pair of flanges 28 means being located between the two side surfaces of the pair of opposing flanges 28 (i.e., between the left side surface of the right flange 28 and the right side surface of the left flange 28). This makes it possible to suppress deformation of the wire W compared to a configuration in which the left-right center of the wire guide hole 76 is not located between the pair of flanges 28. The left-right center of the wire guide hole 76 is offset to the left with respect to the left-right center of the bobbin 26. The center position of the wire guide hole 76 in the left-right direction is substantially the same as the center position between the first rotation axis AX3 of the first roller 70 and the second rotation axis AX4 of the second roller 72 in the left-right direction.

[0067] As shown in FIG. 2, the guide unit 54 is supported by the main housing 4. The guide unit 54 includes a first guide member 84 and a second guide member 86. The first guide member 84 and the second guide member 86 extend forward from the front end of the twisting unit accommodating section 14. The first guide member 84 has a first wire passage 88 having an upwardly convex curved shape. The second guide member 86 is disposed below the first guide member 84 at a distance. The reinforcing bar R is disposed between the first guide member 84 and the second guide member 86 during bundling. The second guide member 86 has a second wire passage 90.

[0068] The wire W fed out from the feeding unit 50 is first guided by the first guide member 84 and passes through the first wire passage 88 from rear to front. While the wire W passes through the first wire passage 88, a downward curl occurs in the wire W. Next, the wire W is guided by the second guide member 86 and passes through the second wire passage 90 from front to rear. Next, the wire W moves rearward and upward. As a result, the wire W is wound around the reinforcing bar R.

[0069] As shown in FIG. 6 , the position of the left-right center of the first wire passage 88 is substantially the same as the position of the left-right center of the wire guide hole 76. The left-right center of the first wire passage 88 is located between the pair of flanges 28. The left-right center of the second wire passage 90 is located to the left of the left-right center of the first wire passage 88. The left-right center of the first wire passage 88 is located between the right end and the left end of the second wire passage 90. The left-right centers of the first wire passage 88 and the second wire passage 90 are offset to the left with respect to the left-right center of the bobbin 26.

[0070] 2, the cutting unit 56 is housed in the twisting unit housing 14. The cutting unit 56 cuts the wire W around the reinforcing bar R.

[0071] The twisting unit 58 is housed in the twisting unit housing 14. The twisting unit 58 includes a twisting motor 94, a sleeve unit 96, and a gripping unit 98.

[0072] The torsion motor 94 is rotated by power supplied from the battery pack BP and is, for example, a brushless motor.

[0073] When the torsion motor 94 rotates, the sleeve unit 96 moves in the front-to-rear direction or rotates around a sleeve rotation axis AX5 extending in the front-to-rear direction. As shown in Fig. 7, the sleeve unit 96 has a plurality of fins 100 arranged at equal intervals around the sleeve rotation axis AX5. The plurality of fins 100 has seven short fins 100a and one long fin 100b.

[0074] As shown in FIG. 2, when the sleeve unit 96 moves forward, the gripping unit 98 grips both ends of the wire W around the rebar R. Furthermore, when the sleeve unit 96 rotates, the gripping unit 98 rotates. This causes the gripping unit 98 to twist the wire W. As a result, the rebar R is bound using the wire W.

[0075] As shown in FIG. 7 , the rotation limiting unit 60 is disposed near the sleeve unit 96. The rotation limiting unit 60 allows and prohibits rotation of the sleeve unit 96. The rotation limiting unit 60 includes an abutment plate 102. The long fins 100b abut against the upper end of the abutment plate 102 from above, thereby prohibiting rotation of the sleeve unit 96. In terms of the vertical direction, the upper end of the abutment plate 102 is positioned lower than the vertical position of the sleeve rotation axis AX5 by half the thickness of the long fins 100b. This prevents the long fins 100b from moving too far below the vertical position of the sleeve rotation axis AX5, even if the long fins 100b abut against the upper end of the abutment plate 102 from above and the rotation limiting unit 60 is pushed downward. Furthermore, when the long fin 100b abuts against the right surface of the abutment plate 102, the abutment plate 102 is pushed to the left by the long fin 100b, and when the long fin 100b moves away from the right surface of the abutment plate 102, the abutment plate 102 returns to its initial position due to the biasing force of a biasing member not shown.

[0076] As shown in FIG. 4, the reinforcing bar binding machine 2 further includes a pair of side plates 106. The pair of side plates 106 are rotatably supported at the front end of the twisting unit housing 14. The pair of side plates 106 are pressed against the reinforcing bars R when binding the reinforcing bars R using the wire W. The pair of side plates 106 open, for example, when the ends of the wire W come into contact with each other after the reinforcing bars R have been bound.

[0077] As shown in Figure 8, the rebar binding machine 2 further includes a slide unit 108 and a detection sensor 110. The slide unit 108 biases the side plates 106 in a direction to open them. The slide unit 108 includes a slide plate 112, a plate guide member 114 (see Figure 9), a magnet support member 116, a magnet 118, and a biasing member 120.

[0078] As shown in Figure 9, the slide plate 112 extends forward from the rear end of the slide plate 112, then bends, extends in a direction tilted leftward relative to the forward direction, and then bends again and extends forward again. The slide plate 112 is supported on rails 122 of the torsion unit housing 14 so as to be slidable in the front-to-rear direction. The slide plate 112 abuts against the side plate 106 from the rear side due to the biasing force of the biasing member 120. The side plate 106 is biased in the closing direction by a biasing member (not shown) with a force greater than the biasing force of the biasing member 120. For this reason, the side plate 106 is normally closed.

[0079] The plate guide member 114 is disposed forward of the rail 122. The plate guide member 114 is disposed near the front end of the slide plate 112. When the side plate 106 switches from the open state to the closed state, a force is applied to the slide plate 112 in a direction D3 inclined relative to the rearward direction, causing the slide plate 112 to abut against the plate guide member 114. The plate guide member 114 guides the slide plate 112 in the rearward direction, thereby preventing the slide plate 112 from being pressed against the rail 122. This reduces the frictional force acting between the slide plate 112 and the rail 122. As a result, it is possible to prevent the slide plate 112 from becoming difficult to slide in the rearward direction.

[0080] As shown in FIG. 8, the magnet support member 116 is fixed to the rear end of the slide plate 112 . The magnet support member 116 supports a magnet 118 .

[0081] The detection sensor 110 includes a sensor element 110a that detects magnetism. When the side plate 106 is closed, the sensor element 110a faces the magnet 118. When the side plate 106 is open, the sensor element 110a does not face the magnet 118. Note that in FIG. 8, the magnet support member 116 and the magnet 118 are shown by dashed lines when the side plate 106 is open. The sensor element 110a detects changes in the magnetism of the magnet 118, allowing the detection sensor 110 to detect whether the side plate 106 is open or closed.

[0082] As shown in FIG. 2, the rebar binding machine 2 further includes an abutment body 130. The abutment body 130 is disposed between the reel support member 32 and the wire guide member 52. When the reel RL is attached to the reel support member 32, the abutment body 130 is disposed between the reel RL and the wire guide member 52. The abutment body 130 can abut against the wire W between the reel support member 32 and the wire guide member 52 (i.e., between the bobbin 26 and the wire guide member 52). In this embodiment, the abutment body 130 can abut against the wire W both when the wire W is taut and when the wire W is slack. As shown in FIG. 5, the abutment body 130 is a rotatable roller. The abutment body 130 is rotatable relative to the reel cover 6. The abutment body 130 is disposed in a guide space 132 defined between the left housing 10 of the feeding unit accommodating section 20 and the reel cover 6 when the reel cover 6 is in the inhibited state. The guide space 132 is part of the feeding unit accommodating portion 20. Therefore, the abutment body 130 is disposed in the feeding unit accommodating portion 20, not in the reel support portion 22. The guide space 132 is disposed between the reel accommodating space 36 and the entrance 78 of the wire guide member 52. Therefore, the guide space 132 is different from the reel accommodating space 36. The guide space 132 is in communication with both the reel accommodating space 36 and the wire guide hole 76.

[0083] The reel cover 6 has a rib 136 that protrudes from the inner surface of the reel cover 6, and the abutment body 130 is supported by the rib 136. As shown in FIG. 10 , the abutment body 130 has a main body portion 138 and a shaft portion 140.

[0084] The main body 138 is made of, for example, a metal material. The main body 138 has a substantially cylindrical shape. The diameter of the main body 138 is constant along the longitudinal direction of the main body 138. The distance between the main body 138 and the inlet 78 of the wire guide member 52 is constant along the longitudinal direction of the main body 138. The length of the main body 138 in the longitudinal direction is greater than the diameter of the inlet 78. When the reel cover 6 is in the inhibited state, the main body 138 does not abut against the wall surface of the reel support 22 (i.e., the wall surface of the left housing 10). For example, the main body 138 is spaced apart from the front and rear wall surfaces of the reel support 22 in the front-rear direction.

[0085] The shaft portion 140 is made of, for example, a metal material. In a modified example, the shaft portion 140 may be made of a resin material. The shaft portion 140 has a substantially cylindrical shape. The shaft portion 140 penetrates the main body portion 138 in the longitudinal direction of the main body portion 138. The main body portion 138 is rotatable around the shaft portion 140. A rotation axis AX6 of the main body portion 138 extends in the longitudinal direction of the main body portion 138. The rotation axis AX6 extends along a plane substantially perpendicular to the reel rotation axis AX1 (see FIG. 2). As shown in FIG. 5, the rotation axis AX6 is substantially parallel to the cover rotation axis AX2, the first rotation axis AX3, and the second rotation axis AX4. As shown in FIG. 10, both ends of the shaft portion 140 are supported by the reel cover 6. The shaft portion 140 is attached to the rib 136 by a ring member 142. The ring member 142 is an elastic member, for example, an O-ring. The shaft portion 140 is detachable from the reel cover 6 .

[0086] The feeding unit accommodating portion 20 includes a retaining surface 144 that defines a portion of the guide space 132. The retaining surface 144 is formed on the left housing 10. When the reel cover 6 is in the prohibited state, the retaining surface 144 faces the shaft portion 140 and is spaced apart from the shaft portion 140. The distance between the shaft portion 140 and the retaining surface 144 is shorter than both the length of the shaft portion 140 and the length of the main body portion 138. Therefore, even when the shaft portion 140 slides in direction D4 relative to the main body portion 138, the shaft portion 140 abuts against the retaining surface 144 while penetrating the main body portion 138. This prevents the shaft portion 140 from slipping out of the main body portion 138 in direction D4 when the reel cover 6 is in the prohibited state. This prevents the abutment member 130 from coming off the reel cover 6 when the reel cover 6 is in the prohibited state. Furthermore, although not shown in the drawings, when the reel cover 6 is in the permissible state, the shaft portion 140 does not face the retaining surface 144. Therefore, the abutment body 130 can be removed from the reel cover 6 by moving the shaft portion 140 in direction D4 using a member such as a pin.

[0087] As shown in FIGS. 5 and 11 , the abutment body 130 moves integrally with the reel cover 6. As shown in FIG. 5 , when the reel cover 6 is in the prohibited state, the abutment body 130 is positioned near the entrance 78 of the wire guide member 52. The abutment body 130 is positioned between the reel RL and the entrance 78. At least a portion of the abutment body 130 is positioned within an incoming wire passage 134 defined between the periphery of the entrance 78 and a pair of flanges 28 of the reel RL. In FIG. 5 , the end of the incoming wire passage 134 is illustrated by a dashed line. The wire W passes through the incoming wire passage 134. When the rebar binding machine 2 is viewed in a direction along a line L1 connecting the center 78a of the entrance 78 and the center 80a of the exit 80, the abutment body 130 blocks a portion of the entrance 78. In this embodiment, when the rebar binding machine 2 is viewed in a direction along the line L1, the abutment body 130 blocks an area of ​​50% or more of the area of ​​the entrance 78. The area of ​​the entrance 78 that is not blocked by the abutting body 130 is larger than the area of ​​the exit 80 and the cross-sectional area of ​​the wire W. In the left-right direction, the right end of the abutting body 130 can abut against the wire W in the incoming wire passage 134 from the left side. The right end of the abutting body 130 corresponds to a contact portion that abuts against the wire W. The right end of the abutting body 130 can also abut against the wire W in the incoming wire passage 134 in the closing direction D2 (see FIG. 3). This allows the abutting body 130 to restrict the area through which the wire W passes in the incoming wire passage 134. Therefore, the abutting body 130 can restrict the area through which the wire W passes in the wire guide hole 76. As a result, variation in the bending tendency of the wire W can be suppressed. Note that in FIG. 5, the wire W extending from the bobbin 26 to the first roller 70 and the second roller 72 is illustrated by a black line. Furthermore, the abutment body 130 rotates by abutting against the wire W when the wire W is pulled out from or retracted into the bobbin 26. This makes it possible to prevent the outer surface of the abutment body 130 (i.e., the outer surface of the main body 138) from being worn due to sliding with the wire W. Furthermore, as shown in FIG. 12, when the wire W is pulled out from or retracted into the bobbin 26, the wire W around the bobbin 26 spreads outward in the radial direction of the bobbin 26. This prevents the wire W from bending in the direction in which the reel rotation axis AX1 extends.Furthermore, the wire W is prevented from coming into contact with the contact body 130 from the vicinity of the left flange portion 28, and the wire W is prevented from becoming bent.

[0088] As shown in FIG. 5 , the feeding unit accommodating portion 20 further includes a guide surface 150 that defines a portion of the guide space 132. The guide surface 150 also defines a portion of the wire-inlet passage 134. The guide surface 150 guides the wire W drawn from the bobbin 26 toward the entrance 78 of the wire guide member 52. The guide surface 150 is formed on the left housing 10. The guide surface 150 is disposed along the periphery of the entrance 78. The guide surface 150 has a curved shape. When the reel cover 6 is in the inhibited state, the guide surface 150 faces the main body portion 138 of the abutment body 130 and the rib 136 of the reel cover 6. The guide surface 150 is spaced apart from the main body portion 138. When the reel cover 6 is in the inhibited state, the maximum distance between the guide surface 150 and the main body portion 138 is smaller than the diameter of the entrance 78.

[0089] As shown in FIG. 6, when the reel cover 6 (see FIG. 5) is in the inhibited state, the left-right center of the abutment body 130 (i.e., the rotation axis AX6) and the right end of the abutment body 130 are offset to the left with respect to the left-right center of the bobbin 26. The left-right center of the abutment body 130 and the right end of the abutment body 130 are located between the pair of flanges 28. The left-right center of the abutment body 130 is located between the left-right center of the wire guide hole 76 and the left flange 28. The left-right position of the right end of the abutment body 130 is approximately the same as the left-right center of the wire guide hole 76. In this embodiment, with respect to the left-right direction, the left-right center of the abutment body 130, the right end of the abutment body 130, the left-right center of the wire guide hole 76, the left-right center between the first rotation axis AX3 and the second rotation axis AX4, the left-right center of the first wire passage 88, and the left-right center of the second wire passage 90 are all offset to the left, i.e., to the same side, relative to the left-right center of the bobbin 26.

[0090] In this embodiment, the right end of the abutment body 130 can abut against the wire W when the wire W is unwound from or retracted into the bobbin 26. Furthermore, when the rebar binding machine 2 is viewed in a direction along line L1 (see FIG. 5) with the reel cover 6 in the prohibited state, the abutment body 130 blocks a portion of the entrance 78. This restricts the area through which the wire W passes through the wire guide hole 76. This reduces variations in the bending of the wire W. As a result, variations in the trajectory of the wire W fed by the first roller 70 and the second roller 72 are reduced. This prevents the wire W from passing through the second wire passage 90 after passing through the first wire passage 88 (see FIG. 2), for example, prevents the wire W from passing through the right side of the second wire passage 90.

[0091] As shown in FIG. 11 , when the reel cover 6 is in the permissive state, the abutment body 130 is positioned to the left of the entrance 78 of the wire guide member 52. The abutment body 130 is positioned outside the wire-inlet passage 134. When the rebar binding machine 2 is viewed in the direction along line L1, the abutment body 130 does not block the entrance 78. Therefore, when the rebar binding machine 2 is viewed in the direction along line L1, the area of ​​the entrance 78 through which the wire W can pass when the reel cover 6 is in the permissive state is larger than the area of ​​the entrance 78 through which the wire W can pass when the reel cover 6 is in the prohibited state. This allows the user to easily insert the tip of the wire W into the entrance 78 when replacing the reel RL. Note that when the reel cover 6 is in the permissive state and the reel binding machine 2 is viewed in the direction along line L1, the abutment body 130 may block part of the entrance 78. In this configuration, when the rebar binding machine 2 is viewed in the direction along line L1, the area of ​​the entrance 78 that is blocked by the abutment body 130 when the reel cover 6 is in the permissive state is smaller than the area of ​​the entrance 78 that is blocked by the abutment body 130 when the reel cover 6 is in the prohibited state. Even with this configuration, the user can easily insert the tip of the wire W into the entrance 78 when replacing the reel RL.

[0092] (effect) The rebar tying machine 2 of this embodiment comprises a feed unit 50 that feeds the wire W, a guide unit 54 that guides the wire W around the rebar R, a reel support member 32 that supports a reel RL carrying the wire W so that it can rotate around the reel rotation axis AX1, a wire guide member 52 that is arranged between the feed unit 50 and the reel support member 32 and guides the wire W toward the feed unit 50, and an abutment body 130 that can abut against the wire W between the wire guide member 52 and the reel support member 32 in the direction in which the reel rotation axis AX1 extends.

[0093] According to the above configuration, the abutment body 130 abuts between the wire guiding member 52 and the reel support member 32 in the direction in which the wire W and the reel rotation axis AX1 extend. Therefore, the path along which the wire W is guided by the wire guiding member 52 is restricted by the abutment body 130 in the direction in which the reel rotation axis AX1 extends. As a result, it is possible to suppress variation in the bending tendency of the wire W. This suppresses variation in the trajectory of the wire W fed from the feed unit 50, and prevents the wire W from coming off the guide unit 54.

[0094] The rebar binding machine 2 further includes a reel cover 6 (an example of a reel stopper) that can be switched between a prohibiting state that prohibits the reel RL from being removed from the reel support member 32 and an allowing state that allows the reel RL to be removed from the reel support member 32. The abutment body 130 is disposed on the reel cover 6 and can come into contact with the wire W when the reel cover 6 is in the prohibiting state.

[0095] According to the above configuration, the abutment body 130 can be brought into contact with the wire W by switching the reel cover 6 from the permitting state to the prohibiting state.

[0096] Furthermore, the reel cover 6 moves in the closing direction D2 (an example of the first direction) when switching from the permitted state to the prohibited state. When the reel cover 6 is in the prohibited state, the abutment body 130 abuts against the wire W in the closing direction D2 between the wire guide member 52 and the reel support member 32.

[0097] According to the above configuration, the passage through which the wire W is guided by the wire guiding member 52 is restricted to the closing direction D2 by the abutting body 130. This makes it possible to suppress variations in the bending tendency of the wire W. This suppresses variations in the trajectory of the wire W fed from the feeding unit 50, and prevents the wire W from coming off the guiding unit 54.

[0098] Furthermore, the wire guide member 52 has a wire guide hole 76 through which the wire W passes. When the rebar binding machine 2 is viewed in a direction along a line L1 connecting the center 78a of the entrance 78 of the wire guide hole 76 and the center 80a of the exit 80 of the wire guide hole 76, the abutment body 130 blocks a portion of the entrance 78 of the wire guide hole 76 when the reel cover 6 is in the prohibited state, and does not block the entrance 78 of the wire guide hole 76 when the reel cover 6 is in the permitted state, or blocks a portion of the entrance 78 so that the area of ​​the region of the entrance 78 blocked by the abutment body 130 is smaller than the area of ​​the region of the entrance 78 blocked by the abutment body 130 when the reel cover 6 is in the prohibited state.

[0099] According to the above configuration, the abutment body 130 blocks a portion of the entrance 78 of the wire guide hole 76 when the reel cover 6 is in the prohibited state. Therefore, the path of the wire W passing through the wire guide hole 76 is restricted by the abutment body 130. As a result, it is possible to suppress variation in the bending of the wire W. This suppresses variation in the trajectory of the wire W fed from the feed unit 50, and prevents the wire W from coming off the guide unit 54. Furthermore, it is possible to make it easier for the user to insert the wire W into the entrance 78 of the wire guide hole 76 when the reel cover 6 is in the permitted state.

[0100] The rebar binding machine 2 also includes a guide surface 150 that is disposed along the periphery of the entrance 78 of the wire guide hole 76 and that guides the wire W to the entrance 78 of the wire guide hole 76. The guide surface 150 faces the abutment body 130 when the reel cover 6 is in the prohibited state.

[0101] According to the above configuration, the guide surface 150 can easily guide the wire W to the entrance 78 of the wire guide hole 76.

[0102] The reinforcing bar binding machine 2 further includes a left housing 10 (an example of a first guide wall) on which a guide surface 150 is formed and which is separate from the wire guide member 52.

[0103] According to the above configuration, the degree of freedom in designing the guide surface 150 can be increased.

[0104] Furthermore, when the reel cover 6 is in the prohibited state and the rebar binding machine 2 is viewed in a direction along the line L1 connecting the center 78a of the entrance 78 of the wire guide hole 76 and the center 80a of the exit 80 of the wire guide hole 76, the abutment body 130 blocks an area of ​​50% or more of the area of ​​the entrance 78 of the wire guide hole 76.

[0105] According to the above configuration, the abutting body 130 can more easily come into contact with the wire W. Furthermore, the path along which the wire W is guided by the wire guiding member 52 can be more effectively regulated by using the abutting body 130. This can further reduce variations in the bending tendency of the wire W. This can reduce variations in the trajectory of the wire W fed from the feeding unit 50, and can further reduce the wire W from coming off the guide unit 54.

[0106] In addition, the contact body 130 is rotatable relative to the reel cover 6.

[0107] According to the above configuration, it is possible to prevent the outer surface of the abutting body 130 from being worn down due to sliding contact with the wire W.

[0108] The rebar binding machine 2 also includes a left-side housing 10 (an example of a housing) that supports the reel cover 6 so that the reel cover 6 can be switched between a prohibited state and an allowed state. The abutment body 130 includes a rotatable main body portion 138 and a shaft portion 140 that penetrates the main body portion 138 and is supported by the reel cover 6. When the reel cover 6 is in the prohibited state, the shaft portion 140 can abut against the left-side housing 10 while penetrating the main body portion 138 in a direction D4 in which the shaft portion 140 comes out of the main body portion 138.

[0109] According to the above configuration, when the reel cover 6 is in the prohibited state, it is possible to prevent the shaft portion 140 from coming out of the main body portion 138. As a result, it is possible to prevent the abutment body 130 from coming off the reel cover 6 when the reel cover 6 is in the prohibited state.

[0110] The contact body 130 is made of a metal material.

[0111] According to the above configuration, it is possible to prevent the abutting body 130 from being worn down due to contact with the wire W.

[0112] The rebar tying machine 2 of this embodiment includes a feed unit 50 that feeds the wire W, a guide unit 54 that guides the wire W around the rebar R, a reel support member 32 that supports a reel RL carrying the wire W so that it can rotate around the reel rotation axis AX1, a wire guide member 52 that is arranged between the feed unit 50 and the reel support member 32 and guides the wire W toward the feed unit 50, an abutment body 130 that abuts the wire W between the wire guide member 52 and the reel support member 32, and a reel cover 6 (an example of a reel stopper) that can be switched between a prohibiting state that prohibits the reel RL from being removed from the reel support member 32 and an allowing state that allows the reel RL to be removed from the reel support member 32. The reel cover 6 moves in the closing direction D2 (an example of the first direction) when switching from the permitted state to the prohibited state, and the abutment body 130 is arranged on the reel cover 6 and can abut against the wire W in the closing direction D2 between the wire guide member 52 and the reel support member 32 when the reel cover 6 is in the prohibited state.

[0113] According to the above configuration, the abutment body 130 abuts against the wire W in the closing direction D2 between the wire guiding member 52 and the reel support member 32. Therefore, the path along which the wire W is guided by the wire guiding member 52 is restricted in the closing direction D2 by the abutment body 130. As a result, it is possible to suppress variation in the bending tendency of the wire W. This suppresses variation in the trajectory of the wire W fed from the feeding unit 50, and prevents the wire W from coming off the guiding unit 54.

[0114] The rebar binding machine 2 disclosed in this specification includes a feed unit 50 that feeds a wire W, a guide unit 54 that guides the wire W around a rebar R, a reel support member 32 that supports a reel RL equipped with the wire W so that the reel RL is rotatable about a reel rotation axis AX1, a wire guide member 52 that is disposed between the feed unit 50 and the reel support member 32 and guides the wire W toward the feed unit 50, a contact member 130 that contacts the wire W between the wire guide member 52 and the reel support member 32, and a reel cover 6 (an example of a reel stopper) that can be switched between a prohibiting state that prohibits the reel RL from being removed from the reel support member 32 and an allowing state that allows the reel RL to be removed from the reel support member 32. The wire guide member 52 has a wire guide hole 76 through which the wire W passes. When the rebar tying machine 2 is viewed in a direction along a line L1 connecting the center 78a of the entrance 78 of the wire guide hole 76 and the center 80a of the exit 80 of the wire guide hole 76, the abutment body 130 blocks part of the entrance 78 of the wire guide hole 76 when the reel cover 6 is in a prohibited state, and does not block the entrance 78 of the wire guide hole 76 when the reel cover 6 is in an allowed state, or blocks part of the entrance 78 so that the area of ​​the area of ​​the entrance 78 blocked by the abutment body 130 is smaller than the area of ​​the area of ​​the entrance 78 blocked by the abutment body 130 when the reel cover 6 is in a prohibited state.

[0115] According to the above configuration, the abutment body 130 blocks a portion of the entrance 78 of the wire guide hole 76 when the reel cover 6 is in the prohibited state. Therefore, the path of the wire W passing through the wire guide hole 76 is restricted by the abutment body 130. As a result, variation in the bending of the wire W can be suppressed. This suppresses variation in the trajectory of the wire W fed from the feed unit 50, and prevents the wire W from coming off the guide unit 54. Furthermore, when the reel cover 6 is in the permitted state, the abutment body 130 does not block the entrance 78 of the wire guide hole 76, or the area of ​​the area of ​​the entrance 78 that is blocked by the abutment body 130 is smaller than the area of ​​the area of ​​the entrance 78 that is blocked by the abutment body 130 when the reel cover 6 is in the prohibited state. This makes it easier to insert the wire W into the entrance 78 of the wire guide hole 76.

[0116] (Second Example) In the second embodiment, differences from the first embodiment will be described. As shown in Fig. 13, the guide surface 150 is formed on the wire guiding member 52. The wire guiding member 52 includes a first portion 200 having the wire guiding hole 76, and a second portion 202 having the guide surface 150. The shape of the first portion 200 is substantially the same as the shape of the wire guiding member 52 of the first embodiment.

[0117] The second portion 202 is formed integrally with the first portion 200. The second portion 202 has a shape obtained by dividing a truncated cone-shaped member into two halves. The guide surface 150 extends along the periphery of the entrance 78 of the first portion 200. The guide surface 150 is disposed flush with the inner surface of the first portion 200 that defines the wire guide hole 76. Therefore, the guide surface 150 can reliably guide the wire W toward the entrance 78.

[0118] (effect) In this embodiment, the guide surface 150 is formed on the wire guide member 52 .

[0119] According to the above configuration, the number of components of the reinforcing bar binding machine 2 can be reduced.

[0120] (Third Example) In the third embodiment, differences from the first embodiment will be described. As shown in FIG. 14 , the rebar binding machine 2 includes a contact body 230 instead of the contact body 130 of the first embodiment. The contact body 230 is integrally formed with the reel cover 6. For example, the reel cover 6 and the contact body 230 are manufactured by molding. This prevents the contact body 230 from coming off the reel cover 6. The contact body 230 does not rotate relative to the reel cover 6. The contact body 230 has a substantially cylindrical shape. The contact body 230 extends from the inner surface of the reel cover 6. When the reel cover 6 is in the prohibited state, the position of the contact body 230 is substantially the same as the position of the contact body 130 of the first embodiment. Furthermore, when the reel cover 6 is in the permitted state, the position of the contact body 230 is substantially the same as the position of the contact body 130 of the first embodiment. The outer surface of the abutting body 230 can come into contact with the wire W. When the wire W is drawn out from the bobbin 26 or drawn back into the bobbin 26, the wire W slides over the outer surface of the abutting body 230.

[0121] (effect) In this embodiment, the contact member 230 is formed integrally with the reel cover 6 .

[0122] According to the above configuration, the number of components of the reinforcing bar binding machine 2 can be reduced.

[0123] (Fourth Example) In the fourth embodiment, differences from the first embodiment will be described. As shown in Fig. 15, the rebar binding machine 2 has a contact body 330 instead of the contact body 130 of the first embodiment. The contact body 330 is rotatably supported on the left housing 10 of the feeding unit accommodating section 20. The contact body 330 is configured to contact the wire W in both a state in which the wire W is taut and a state in which the wire W is slack.

[0124] The rebar binding machine 2 further includes an operating member 332. The operating member 332 is supported by the reel cover 6. In this embodiment, the operating member 332 is integrally formed with the reel cover 6 by molding or the like. In a modified example, the operating member 332 may be separate from the reel cover 6 and attached to the reel cover 6. The operating member 332 extends from the inner surface of the reel cover 6. When the reel cover 6 is in the permissive state, the operating member 332 is separated from the abutting body 330. Therefore, the abutting body 330 does not block the entrance 78 of the wire guide member 52. At this time, the abutting body 330 does not abut against the wire W. Hereinafter, a state in which the abutting body 330 does not abut against the wire W will be referred to as a non-abutting state.

[0125] As shown in FIG. 16 , when the reel cover 6 switches from the permissive state to the forbidden state, the operating member 332 operates the abutment body 330 by abutting against the abutment body 330. This causes the abutment body 330 to rotate and block a portion of the entrance 78 when the rebar binding machine 2 is viewed in the direction along the line L1. When the rebar binding machine 2 is viewed in the direction along the line L1, the area of ​​the entrance 78 blocked by the abutment body 330 is substantially the same as the area of ​​the entrance 78 blocked by the abutment body 130 in the first embodiment. When the abutment body 330 blocks a portion of the entrance 78, the abutment body 330 can abut against the wire W in the incoming wire passage 134 from the left side. Because the abutment body 330 restricts the area through which the wire W passes through the incoming wire passage 134, the abutment body 330 can also restrict the area through which the wire W passes through the wire guide hole 76. Hereinafter, the state in which the abutting body 330 can come into contact with the wire W will be referred to as the abutting state. When the abutting body 330 is in the abutting state, the abutting body 330 is disposed between the reel RL and the entrance 78, and is also disposed within the incoming wire passage 134.

[0126] 15, when the reel cover 6 switches from the prohibited state to the permitted state, the operating member 332 moves away from the contact body 330. As a result, the contact body 330 switches from the contact state to the non-contact state due to the biasing force of the biasing member (not shown).

[0127] (effect) In this embodiment, the rebar binding machine 2 further includes a reel cover 6 that is switchable between a prohibiting state that prohibits the reel RL from being removed from the reel support member 32 and an allowing state that allows the reel RL to be removed from the reel support member 32, a left-side housing 10 that supports the reel cover 6 so that the reel cover 6 can be switched between the prohibiting state and the allowing state and that movably supports the abutment body 330, and an operating member 332 that is supported by the reel cover 6 and operates the abutment body 330. When the reel cover 6 switches from the allowing state to the prohibiting state, the operating member 332 operates the abutment body 330 and switches the abutment body 330 from a non-contact state in which it does not contact the wire W to an abutment state in which it can contact the wire W.

[0128] According to the above configuration, the user can switch the contact body 330 from the non-contact state to the contact state by operating the reel cover 6 without directly operating the operating member 332.

[0129] (Fifth Example) In the fifth embodiment, differences from the first embodiment will be described. As shown in Fig. 17, the main body 138 is a concave roller. The diameter of the main body 138 decreases from one end of the main body 138 toward the center and increases from the center toward the other end of the main body 138. The diameters at both ends of the main body 138 are larger than the diameter at the center of the main body 138. In a modified example, the main body 138 may be a V-shaped roller.

[0130] The main body 138 can abut against the wire W in the incoming wire passage 134 from the left side. When the wire W is drawn out from the bobbin 26 or drawn back into the bobbin 26, the wire W abuts against the main body 138 at the center of the main body 138 and in the vicinity thereof. This allows the abutment body 130 to regulate the area through which the wire W passes in the incoming wire passage 134. As a result, the abutment body 130 can regulate the area through which the wire W passes in the wire guide hole 76.

[0131] (effect) In this embodiment, the abutment body 130 is a roller having a larger diameter at both ends of the abutment body 130 than at the center of the abutment body 130 .

[0132] According to the above configuration, the wire W passes through the center of the contact body 130 and a position in the vicinity thereof. Therefore, the path along which the wire W is guided by the wire guiding member 52 can be more regulated by using the contact body 130. As a result, the variation in the bending tendency of the wire W can be more effectively suppressed. This reduces the variation in the trajectory of the wire W fed from the feeding unit 50, and more effectively prevents the wire W from coming off the guide unit 54.

[0133] (Sixth Example) In the sixth embodiment, differences from the first embodiment will be described. As shown in Fig. 18, the left housing 10 of the feeding unit accommodating section 20 further includes a pair of support walls 400. One support wall 400 extends from one end of the guide surface 150, and the other support wall 400 extends from the other end of the guide surface 150. The pair of support walls 400 face each other.

[0134] The abutment body 130 is disposed between a pair of support walls 400. One end of the abutment body 130 (i.e., one end of the shaft portion 140) is supported by one of the support walls 400, and the other end of the abutment body 130 (i.e., the other end of the shaft portion 140) is supported by the other support wall 400. The main body portion 138 of the abutment body 130 is rotatable around the shaft portion 140. The position of the abutment body 130 is substantially the same as the position of the abutment body 130 when the reel cover 6 is in the prohibited state in the first embodiment. Therefore, when the rebar binding machine 2 is viewed in the direction along line L1 (see FIG. 5), the abutment body 130 blocks a portion of the entrance 78 of the wire guide member 52. Furthermore, because the abutment body 130 is supported by the pair of support walls 400, i.e., the left housing 10, the position of the abutment body 130 does not change regardless of whether the reel cover 6 is in the prohibited state or the permitted state. Therefore, the abutment body 130 always blocks a part of the entrance 78 .

[0135] (Seventh Example) In the seventh embodiment, differences from the first embodiment will be described. As shown in FIG. 19 , the diameter of the main body 138 of the abutment body 130 is larger than the diameter of the main body 138 of the first embodiment. The diameter of the main body 138 is larger than the diameter of the entrance 78. When the reel cover 6 is in the prohibited state and the reinforcing bar binding machine 2 is viewed in a direction along the line L1, the abutment body 130 blocks the entrance 78 so that the area of ​​the entrance 78 that is not blocked by the abutment body 130 is equal to or smaller than the opening area of ​​the exit 80. This allows the abutment body 130 to more effectively restrict the area through which the wire W passes through the wire entrance passage 134. As a result, the abutment body 130 can more effectively restrict the area through which the wire W passes through the wire guide hole 76. Furthermore, when the reel cover 6 is in the prohibited state and the reinforcing bar binding machine 2 is viewed in a direction along the line L1, the area of ​​the entrance 78 that is not blocked by the abutment body 130 is larger than the cross-sectional area of ​​the wire W.

[0136] (effect) In this embodiment, the wire guide hole 76 has a frustum shape in which the opening area of ​​the entrance 78 is larger than the opening area of ​​the exit 80. When the reel cover 6 is in the prohibited state, the abutment body 130 blocks the entrance 78 so that the area of ​​the region of the entrance 78 that is not blocked by the abutment body 130 is equal to or smaller than the opening area of ​​the exit 80.

[0137] According to the above configuration, the abutting body 130 can more easily come into contact with the wire W. Furthermore, the path along which the wire W is guided by the wire guiding member 52 can be more effectively regulated by using the abutting body 130. This can further reduce variations in the bending tendency of the wire W. This can reduce variations in the trajectory of the wire W fed from the feeding unit 50, and can further reduce the wire W from coming off the guide unit 54.

[0138] (Eighth Example) The eighth embodiment will be described, focusing on differences from the first embodiment. As shown in FIGS. 20 and 21 , the rebar binding machine 2 includes a guide surface 450 instead of the guide surface 150 (see FIG. 5 ) of the first embodiment. The guide surface 450 is formed on the left housing 10. The guide surface 450 has a shape that follows the side of a virtual cone (a cone in this embodiment) defined by the inner surface of the wire guide member 52. Therefore, no step is created between the guide surface 450 and the inner surface of the wire guide member 52. If a step were to occur between the guide surface 450 and the inner surface of the wire guide member 52, this step could cause the wire W drawn from the bobbin 26 to bend unintentionally. In this embodiment, no step is created between the guide surface 450 and the inner surface of the wire guide member 52, thereby preventing the wire W drawn from the bobbin 26 from being bent unintentionally.

[0139] In this embodiment, the wire guide member 52 and the wall portion 402 of the left housing 10 that defines the guide surface 450 are collectively referred to as the "wire guide wall 404." The wire guide wall 404 guides the wire W drawn from the bobbin 26 toward the feeding unit 50. The wire guide wall 404 starts at the lower end of the wall portion 402 and ends at the upper end (i.e., the outlet 80) of the wire guide member 52. As shown in FIG. 20 , the wire guide wall 404 is located outside the reel accommodating space 36. In other words, the wire guide wall 404 does not function as a wall that encloses the reel RL. For clarity, the boundary 36a of the reel accommodating space 36 is shown using a dashed line in FIG. 20 .

[0140] As shown in Figure 22, the rebar binding machine 2 is equipped with a contact body 430 instead of the contact body 130 of the first embodiment (see Figures 4 and 5). The contact body 430 is a plate-shaped member made of a metal material. The contact body 430 has a flat portion 432 in which a screw hole 431 is formed, and a curved portion 434 that is curved in a semi-cylindrical shape. The contact body 430 is fixed to the reel cover 6 with a screw 438.

[0141] As shown in FIG. 20 , when the reel cover 6 is in the prohibited state, the abutment body 430 is positioned so that the convex surface 436 of the curved portion 434 faces the guide surface 450 of the wire guide wall 404. Like the wire guide wall 404, the abutment body 430 is positioned outside the reel storage space 36. When the rebar binding machine 2 is viewed in a direction along a line L1 connecting the center 78a of the entrance 78 and the center 80a of the exit 80, the abutment body 430 blocks a portion of the entrance 78. In this embodiment, when the rebar binding machine 2 is viewed in a direction along the line L1, the abutment body 430 blocks more than 50% of the area of ​​the entrance 78. The area of ​​the area of ​​the entrance 78 that is not blocked by the abutment body 430 is larger than both the area of ​​the exit 80 and the cross-sectional area of ​​the wire W. The convex surface 436 of the abutment body 430 can abut against the wire W in the incoming wire passage 134 from the left. Furthermore, the convex surface 436 of the contact body 430 can come into contact with the wire W in the incoming wire passage 134 in the closing direction D2 (see FIG. 3). When the wire W is drawn out from the bobbin 26 or drawn back into the bobbin 26, the wire W slides on the convex surface 436 of the contact body 430.

[0142] (effect) The rebar tying machine 2 of this embodiment comprises a feed unit 50 that feeds the wire W, a guide unit 54 that guides the wire W around the rebar R, a reel support member 32 that supports a reel RL carrying the wire W so that it can rotate around the reel rotation axis AX1, a wire guide member 52 that is arranged between the feed unit 50 and the reel support member 32 and guides the wire W toward the feed unit 50, and an abutment body 430 that can abut against the wire W between the wire guide member 52 and the reel support member 32 in the direction in which the reel rotation axis AX1 extends.

[0143] According to the above configuration, the abutment body 430 abuts between the wire guiding member 52 and the reel support member 32 in the direction in which the wire W and the reel rotation axis AX1 extend. Therefore, the path along which the wire W is guided by the wire guiding member 52 is restricted by the abutment body 430 in the direction in which the reel rotation axis AX1 extends. As a result, it is possible to suppress variation in the bending tendency of the wire W. This suppresses variation in the trajectory of the wire W fed from the feed unit 50, and prevents the wire W from coming off the guide unit 54.

[0144] The rebar binding machine 2 further includes a reel cover 6 (an example of a reel stopper) that can be switched between a prohibiting state that prohibits the reel RL from being removed from the reel support member 32 and an allowing state that allows the reel RL to be removed from the reel support member 32. The abutment body 430 is disposed on the reel cover 6 and can come into contact with the wire W when the reel cover 6 is in the prohibiting state.

[0145] According to the above configuration, the abutment body 430 can be brought into a state in which it can come into contact with the wire W by switching the reel cover 6 from the permissive state to the inhibited state.

[0146] Furthermore, the reel cover 6 moves in the closing direction D2 (an example of the first direction) when switching from the permitted state to the prohibited state. When the reel cover 6 is in the prohibited state, the abutment body 430 abuts against the wire W in the closing direction D2 between the wire guide member 52 and the reel support member 32.

[0147] According to the above configuration, the passage through which the wire W is guided by the wire guiding member 52 is restricted to the closing direction D2 by the abutting body 430. This makes it possible to suppress variations in the bending tendency of the wire W. This suppresses variations in the trajectory of the wire W fed from the feeding unit 50, and prevents the wire W from coming off the guiding unit 54.

[0148] Furthermore, the wire guide member 52 has a wire guide hole 76 through which the wire W passes. When the rebar binding machine 2 is viewed in a direction along a line L1 connecting the center 78a of the entrance 78 of the wire guide hole 76 and the center 80a of the exit 80 of the wire guide hole 76, the abutment body 430 blocks a portion of the entrance 78 of the wire guide hole 76 when the reel cover 6 is in the prohibited state, and does not block the entrance 78 of the wire guide hole 76 when the reel cover 6 is in the permitted state, or blocks a portion of the entrance 78 so that the area of ​​the region of the entrance 78 blocked by the abutment body 430 is smaller than the area of ​​the region of the entrance 78 blocked by the abutment body 430 when the reel cover 6 is in the prohibited state.

[0149] According to the above configuration, the abutment body 430 blocks a portion of the entrance 78 of the wire guide hole 76 when the reel cover 6 is in the prohibited state. Therefore, the path of the wire W passing through the wire guide hole 76 is restricted by the abutment body 430. As a result, it is possible to suppress variation in the bending of the wire W. This suppresses variation in the trajectory of the wire W fed from the feed unit 50, and prevents the wire W from coming off the guide unit 54. Furthermore, it is possible to make it easier for the user to insert the wire W into the entrance 78 of the wire guide hole 76 when the reel cover 6 is in the permitted state.

[0150] The rebar binding machine 2 also includes a guide surface 450 that is disposed along the periphery of the entrance 78 of the wire guide hole 76 and that guides the wire W to the entrance 78 of the wire guide hole 76. The guide surface 450 faces the abutment body 430 when the reel cover 6 is in the prohibited state.

[0151] According to the above configuration, the guide surface 450 can easily guide the wire W to the entrance 78 of the wire guide hole 76.

[0152] The reinforcing bar binding machine 2 further includes a wall portion 402 (an example of a first guide wall) on which a guide surface 450 is formed and which is separate from the wire guide member 52.

[0153] According to the above configuration, the degree of freedom in designing the guide surface 450 can be increased.

[0154] Furthermore, when the reel cover 6 is in the prohibited state and the rebar binding machine 2 is viewed in a direction along the line L1 connecting the center 78a of the entrance 78 of the wire guide hole 76 and the center 80a of the exit 80 of the wire guide hole 76, the abutment body 430 blocks an area of ​​50% or more of the area of ​​the entrance 78 of the wire guide hole 76.

[0155] According to the above configuration, the abutting body 430 can easily come into contact with the wire W. Furthermore, the path along which the wire W is guided by the wire guiding member 52 can be more regulated by using the abutting body 430. This can further reduce the variation in the bending tendency of the wire W. This can reduce the variation in the trajectory of the wire W fed from the feeding unit 50, and can further reduce the wire W from coming off the guide unit 54.

[0156] The contact body 430 is made of a metal material.

[0157] According to the above configuration, it is possible to prevent the abutting body 430 from being worn down due to contact with the wire W.

[0158] The rebar tying machine 2 of this embodiment includes a feed unit 50 that feeds the wire W, a guide unit 54 that guides the wire W around the rebar R, a reel support member 32 that supports a reel RL carrying the wire W so that it can rotate around the reel rotation axis AX1, a wire guide member 52 that is arranged between the feed unit 50 and the reel support member 32 and guides the wire W toward the feed unit 50, an abutment body 430 that abuts the wire W between the wire guide member 52 and the reel support member 32, and a reel cover 6 (an example of a reel stopper) that can be switched between a prohibiting state that prohibits the reel RL from coming off the reel support member 32 and an allowing state that allows the reel RL to come off the reel support member 32. The reel cover 6 moves in the closing direction D2 (an example of the first direction) when switching from the permitted state to the prohibited state, and the abutment body 430 is arranged on the reel cover 6 and can abut against the wire W in the closing direction D2 between the wire guide member 52 and the reel support member 32 when the reel cover 6 is in the prohibited state.

[0159] According to the above configuration, the abutment body 430 abuts against the wire W in the closing direction D2 between the wire guiding member 52 and the reel support member 32. Therefore, the path along which the wire W is guided by the wire guiding member 52 is restricted in the closing direction D2 by the abutment body 430. As a result, it is possible to suppress variation in the bending tendency of the wire W. This suppresses variation in the trajectory of the wire W fed from the feeding unit 50, and prevents the wire W from coming off the guiding unit 54.

[0160] The reinforcing bar binding machine 2 of this embodiment includes a feed unit 50 that feeds the wire W, a guide unit 54 that guides the wire W around the reinforcing bar R, a reel support member 32 that supports a reel RL equipped with the wire W so that the reel RL is rotatable about a reel rotation axis AX1, a wire guide member 52 that is disposed between the feed unit 50 and the reel support member 32 and guides the wire W toward the feed unit 50, a contact member 430 that contacts the wire W between the wire guide member 52 and the reel support member 32, and a reel cover 6 (an example of a reel stopper) that can be switched between a prohibiting state that prohibits the reel RL from being removed from the reel support member 32 and an allowing state that allows the reel RL to be removed from the reel support member 32. The wire guide member 52 has a wire guide hole 76 through which the wire W passes. When the rebar tying machine 2 is viewed in a direction along a line L1 connecting the center 78a of the entrance 78 of the wire guide hole 76 and the center 80a of the exit 80 of the wire guide hole 76, the abutment body 430 blocks part of the entrance 78 of the wire guide hole 76 when the reel cover 6 is in a prohibited state, and does not block the entrance 78 of the wire guide hole 76 when the reel cover 6 is in an allowed state, or blocks part of the entrance 78 so that the area of ​​the area of ​​the entrance 78 blocked by the abutment body 430 is smaller than the area of ​​the area of ​​the entrance 78 blocked by the abutment body 430 when the reel cover 6 is in a prohibited state.

[0161] According to the above configuration, the abutment body 430 blocks a portion of the entrance 78 of the wire guide hole 76 when the reel cover 6 is in the prohibited state. Therefore, the path of the wire W passing through the wire guide hole 76 is restricted by the abutment body 430. As a result, variation in the bending of the wire W can be suppressed. This suppresses variation in the trajectory of the wire W fed from the feed unit 50 and prevents the wire W from coming off the guide unit 54. Furthermore, when the reel cover 6 is in the permitted state, the abutment body 430 does not block the entrance 78 of the wire guide hole 76, or the area of ​​the area of ​​the entrance 78 that is blocked by the abutment body 430 is smaller than the area of ​​the area of ​​the entrance 78 that is blocked by the abutment body 430 when the reel cover 6 is in the prohibited state. This makes it easier to insert the wire W into the entrance 78 of the wire guide hole 76.

[0162] (Ninth Example) The ninth embodiment will be described, focusing on the differences from the first embodiment. As shown in FIG. 23, the rebar binding machine 2 includes a wire guide member 552 instead of the wire guide member 52 (see FIG. 5) of the first embodiment. The wire guide member 552 includes a first portion 554, which is a cylinder whose diameter decreases as it approaches the feeding unit 50, and a second portion 556 that extends downward from the lower end of the first portion 554. The first portion 554 and the second portion 556 are formed integrally and seamlessly. The first portion 554 of the wire guide member 552 defines a wire guide hole 76. The wire guide hole 76 has the same shape as that described in the first embodiment, so please refer to the first embodiment for details.

[0163] As shown in FIG. 24, the rebar binding machine 2 has a first guide surface 550a and a second guide surface 550b instead of the guide surface 150 (see FIG. 5). The first guide surface 550a is formed on the left housing 10. The second guide surface 550b is formed on the second portion 556 of the wire guide member 552. The first guide surface 550a has a shape that follows the side surface of an imaginary cone (in this embodiment, a cone) defined by the second guide surface 550b (i.e., the inner surface of the wire guide member 552). Therefore, no step is created between the first guide surface 550a and the second guide surface 550b. If a step were to occur between the first guide surface 550a and the second guide surface 550b, this step could cause the wire W drawn out from the bobbin 26 to bend unintentionally. In this embodiment, since no step is formed between the first guide surface 550a and the second guide surface 550b, the wire W drawn out from the bobbin 26 is prevented from being unintentionally bent.

[0164] In this embodiment, the wire guide member 552 and the wall portion 502 of the left housing 10 that defines the first guide surface 550a are collectively referred to as the "wire guide wall 504." The shape of the wire guide wall 504 is substantially the same as the wire guide wall 404 (see FIG. 20) described in the eighth embodiment. The wire guide wall 504 guides the wire W drawn from the bobbin 26 toward the feeding unit 50. The wire guide wall 504 starts at the lower end of the wall portion 502 and ends at the upper end (i.e., the outlet 80) of the wire guide member 552. As shown in FIG. 23, the wire guide wall 504 is located outside the reel accommodating space 36. In other words, the wire guide wall 504 does not function as a wall that encloses the reel RL. For clarity, the boundary 36a of the reel accommodating space 36 is illustrated in FIG. 23 using a dashed line.

[0165] As shown in Fig. 23, the reinforcing bar binding machine 2 is provided with a contact body 430 instead of the contact body 130 (see Figs. 4 and 5) of the first embodiment. The contact body 430 is the same as that described in the eighth embodiment, so please refer to the eighth embodiment for details.

[0166] (effect) The rebar tying machine 2 of this embodiment includes a feed unit 50 that feeds the wire W, a guide unit 54 that guides the wire W around the rebar R, a reel support member 32 that supports a reel RL carrying the wire W so that it can rotate around the reel rotation axis AX1, a wire guide member 552 that is arranged between the feed unit 50 and the reel support member 32 and guides the wire W toward the feed unit 50, and an abutment body 430 that can abut against the wire W between the wire guide member 552 and the reel support member 32 in the direction in which the reel rotation axis AX1 extends.

[0167] According to the above configuration, the abutment body 430 abuts between the wire guiding member 552 and the reel support member 32 in the direction in which the wire W and the reel rotation axis AX1 extend. Therefore, the path along which the wire W is guided by the wire guiding member 552 is restricted by the abutment body 430 in the direction in which the reel rotation axis AX1 extends. As a result, it is possible to suppress variation in the bending tendency of the wire W. This suppresses variation in the trajectory of the wire W fed from the feed unit 50, and prevents the wire W from coming off the guide unit 54.

[0168] The rebar binding machine 2 further includes a reel cover 6 (an example of a reel stopper) that can be switched between a prohibiting state that prohibits the reel RL from being removed from the reel support member 32 and an allowing state that allows the reel RL to be removed from the reel support member 32. The abutment body 430 is disposed on the reel cover 6 and can come into contact with the wire W when the reel cover 6 is in the prohibiting state.

[0169] According to the above configuration, the abutment body 430 can be brought into a state in which it can come into contact with the wire W by switching the reel cover 6 from the permissive state to the inhibited state.

[0170] Furthermore, the reel cover 6 moves in the closing direction D2 (an example of the first direction) when switching from the permitted state to the prohibited state. When the reel cover 6 is in the prohibited state, the abutment body 430 abuts against the wire W in the closing direction D2 between the wire guiding member 552 and the reel support member 32.

[0171] According to the above configuration, the passage through which the wire W is guided by the wire guiding member 552 is restricted to the closing direction D2 by the abutting body 430. This makes it possible to suppress variations in the bending tendency of the wire W. This suppresses variations in the trajectory of the wire W fed from the feeding unit 50, and prevents the wire W from coming off the guide unit 54.

[0172] Furthermore, the wire guide member 552 has a wire guide hole 76 through which the wire W passes. When the rebar binding machine 2 is viewed in a direction along a line L1 connecting the center 78a of the entrance 78 of the wire guide hole 76 and the center 80a of the exit 80 of the wire guide hole 76, the abutment body 430 blocks a portion of the entrance 78 of the wire guide hole 76 when the reel cover 6 is in the prohibited state, and does not block the entrance 78 of the wire guide hole 76 when the reel cover 6 is in the permitted state, or blocks a portion of the entrance 78 so that the area of ​​the region of the entrance 78 blocked by the abutment body 430 is smaller than the area of ​​the region of the entrance 78 blocked by the abutment body 430 when the reel cover 6 is in the prohibited state.

[0173] According to the above configuration, the abutment body 430 blocks a portion of the entrance 78 of the wire guide hole 76 when the reel cover 6 is in the prohibited state. Therefore, the path of the wire W passing through the wire guide hole 76 is restricted by the abutment body 430. As a result, it is possible to suppress variation in the bending of the wire W. This suppresses variation in the trajectory of the wire W fed from the feed unit 50, and prevents the wire W from coming off the guide unit 54. Furthermore, it is possible to make it easier for the user to insert the wire W into the entrance 78 of the wire guide hole 76 when the reel cover 6 is in the permitted state.

[0174] The rebar binding machine 2 is further provided with a first guide surface 550a and a second guide surface 550b that are arranged along the periphery of the entrance 78 of the wire guide hole 76 and guide the wire W to the entrance 78 of the wire guide hole 76. The first guide surface 550a and the second guide surface 550b face the abutment body 430 when the reel cover 6 is in the prohibited state.

[0175] According to the above configuration, the wire W can be easily guided to the entrance 78 of the wire guide hole 76 by the first guide surface 550a and the second guide surface 550b.

[0176] The reinforcing bar binding machine 2 further includes a wall portion 502 (an example of a first guide wall) that is formed with a first guide surface 550a and is separate from the wire guide member 552.

[0177] According to the above configuration, the degree of freedom in designing the first guide surface 550a can be increased.

[0178] The second guide surface 550b is formed on the wire guide member 552.

[0179] According to the above configuration, the number of components of the reinforcing bar binding machine 2 can be reduced.

[0180] Furthermore, when the reel cover 6 is in the prohibited state and the rebar binding machine 2 is viewed in a direction along the line L1 connecting the center 78a of the entrance 78 of the wire guide hole 76 and the center 80a of the exit 80 of the wire guide hole 76, the abutment body 430 blocks an area of ​​50% or more of the area of ​​the entrance 78 of the wire guide hole 76.

[0181] According to the above configuration, the abutting body 430 can easily come into contact with the wire W. Furthermore, the path along which the wire W is guided by the wire guiding member 552 can be more regulated by using the abutting body 430. This can further reduce the variation in the bending tendency of the wire W. This can reduce the variation in the trajectory of the wire W fed from the feeding unit 50, and can further reduce the wire W from coming off the guide unit 54.

[0182] The contact body 430 is made of a metal material.

[0183] According to the above configuration, it is possible to prevent the abutting body 430 from being worn down due to contact with the wire W.

[0184] The rebar tying machine 2 of this embodiment includes a feed unit 50 that feeds the wire W, a guide unit 54 that guides the wire W around the rebar R, a reel support member 32 that supports a reel RL carrying the wire W so that it can rotate around the reel rotation axis AX1, a wire guide member 552 that is arranged between the feed unit 50 and the reel support member 32 and guides the wire W toward the feed unit 50, an abutment body 430 that abuts the wire W between the wire guide member 552 and the reel support member 32, and a reel cover 6 (an example of a reel stopper) that can be switched between a prohibiting state that prohibits the reel RL from being removed from the reel support member 32 and an allowing state that allows the reel RL to be removed from the reel support member 32. The reel cover 6 moves in the closing direction D2 (an example of the first direction) when switching from the permitted state to the prohibited state, and the abutment body 430 is arranged on the reel cover 6 and can abut against the wire W in the closing direction D2 between the wire guide member 552 and the reel support member 32 when the reel cover 6 is in the prohibited state.

[0185] According to the above configuration, the abutment body 430 abuts against the wire W in the closing direction D2 between the wire guiding member 552 and the reel support member 32. Therefore, the path along which the wire W is guided by the wire guiding member 552 is restricted in the closing direction D2 by the abutment body 430. As a result, it is possible to suppress variation in the bending tendency of the wire W. This suppresses variation in the trajectory of the wire W fed from the feeding unit 50, and prevents the wire W from coming off the guiding unit 54.

[0186] The reinforcing bar binding machine 2 of this embodiment includes a feed unit 50 that feeds the wire W, a guide unit 54 that guides the wire W around the reinforcing bar R, a reel support member 32 that supports a reel RL equipped with the wire W so that the reel RL is rotatable about a reel rotation axis AX1, a wire guide member 552 that is disposed between the feed unit 50 and the reel support member 32 and guides the wire W toward the feed unit 50, a contact member 430 that contacts the wire W between the wire guide member 552 and the reel support member 32, and a reel cover 6 (an example of a reel stopper) that can be switched between a prohibiting state that prohibits the reel RL from being removed from the reel support member 32 and an allowing state that allows the reel RL to be removed from the reel support member 32. The wire guide member 552 has a wire guide hole 76 through which the wire W passes. When the rebar tying machine 2 is viewed in a direction along a line L1 connecting the center 78a of the entrance 78 of the wire guide hole 76 and the center 80a of the exit 80 of the wire guide hole 76, the abutment body 430 blocks part of the entrance 78 of the wire guide hole 76 when the reel cover 6 is in a prohibited state, and does not block the entrance 78 of the wire guide hole 76 when the reel cover 6 is in an allowed state, or blocks part of the entrance 78 so that the area of ​​the area of ​​the entrance 78 blocked by the abutment body 430 is smaller than the area of ​​the area of ​​the entrance 78 blocked by the abutment body 430 when the reel cover 6 is in a prohibited state.

[0187] According to the above configuration, the abutment body 430 blocks a portion of the entrance 78 of the wire guide hole 76 when the reel cover 6 is in the prohibited state. Therefore, the path of the wire W passing through the wire guide hole 76 is restricted by the abutment body 430. As a result, variation in the bending of the wire W can be suppressed. This suppresses variation in the trajectory of the wire W fed from the feed unit 50 and prevents the wire W from coming off the guide unit 54. Furthermore, when the reel cover 6 is in the permitted state, the abutment body 430 does not block the entrance 78 of the wire guide hole 76, or the area of ​​the area of ​​the entrance 78 that is blocked by the abutment body 430 is smaller than the area of ​​the area of ​​the entrance 78 that is blocked by the abutment body 430 when the reel cover 6 is in the prohibited state. This makes it easier to insert the wire W into the entrance 78 of the wire guide hole 76.

[0188] (Tenth Example) The tenth embodiment will be described, focusing on the differences from the first embodiment. As shown in Figures 25 and 26, the reinforcing bar binding machine 2 is equipped with a wire guide member 652 instead of the wire guide member 52 (see Figure 5) of the first embodiment. In addition, the reinforcing bar binding machine 2 does not have the abutment body 130 (see Figure 5) of the first embodiment.

[0189] The wire guide member 652 is a cylindrical body having a substantially semicircular outer shape when viewed in a cross section perpendicular to the vertical direction. The wire guide member 652 includes a flat wall 654 having a flat inner surface that is linear when viewed in a cross section perpendicular to the vertical direction, and a curved wall 656 having a curved inner surface that is arc-shaped when viewed in a cross section perpendicular to the vertical direction. The inner surface of the wire guide member 652 defines a wire guide hole 676 that extends in the vertical direction. The wire guide hole 676 has an entrance 678 located at the lower end of the wire guide hole 676 and an exit 680 located at the upper end of the wire guide hole 676. The opening area of ​​the entrance 678 is larger than the opening area of ​​the exit 680.

[0190] As shown in FIG. 26 , the rebar binding machine 2 includes a guide surface 650 instead of the guide surface 150 (see FIG. 5 ). The guide surface 650 is formed on the left housing 10. The guide surface 650 has a shape that follows the side of a virtual cone (in this embodiment, a cone with a semicircular bottom) defined by the inner surface of the wire guide member 652 (specifically, the inner surface of the curved wall 656). Therefore, no step is formed between the guide surface 650 and the inner surface of the wire guide member 652. If a step were to occur between the guide surface 650 and the inner surface of the wire guide member 652, this step could cause the wire W drawn out from the bobbin 26 to bend unintentionally. In this embodiment, since no step is formed between the guide surface 650 and the inner surface of the wire guide member 652, the wire W drawn out from the bobbin 26 is prevented from being unintentionally bent.

[0191] In this embodiment, the wire guide member 652 and the wall portion 602 of the left housing 10 that defines the guide surface 650 are collectively referred to as the "wire guide wall 604." The wire guide wall 604 guides the wire W drawn from the bobbin 26 toward the feeding unit 50. The wire guide wall 604 starts at the lower end of the wall portion 602 and ends at the upper end (i.e., the outlet 680) of the wire guide member 652. As shown in FIG. 25, the wire guide wall 604 is located outside the reel accommodating space 36. In other words, the wire guide wall 604 does not function as a wall that encloses the reel RL. For clarity, the boundary 36a of the reel accommodating space 36 is shown using a dashed line in FIG. 25.

[0192] 27, the wire guide wall 604 has a left abutment portion 606L that abuts against the wire W drawn out from a position adjacent to the left flange portion 28L. The left abutment portion 606L is the lower end of the wire guide wall 604 on the left side as viewed from the wire W (i.e., the lower end of the flat wall 654 of the wire guiding member 652). The left abutment portion 606L abuts against the left surface of the wire W from the left side of the wire W.

[0193] 28, the wire guide wall 604 has a right abutment portion 606R that abuts against the wire W drawn out from a position adjacent to the right flange portion 28R. The right abutment portion 606R is the lower end of the wire guide wall 604 (i.e., the lower end of the wall portion 602) that is located to the right of the wire W. The right abutment portion 606R abuts against the right surface of the wire W from the right side of the wire W.

[0194] 27 and 28, the path along which the wire W is guided by the wire guide wall 604 is restricted in the left-right direction by the left contact portion 606L and the right contact portion 606R. As a result, it is possible to suppress variations in the bending tendency of the wire W. This suppresses variations in the trajectory of the wire W fed from the feed unit 50, and prevents the wire W from coming off the guide unit 54 (see FIG. 25).

[0195] Each of the left contact portion 606L and the right contact portion 606R is located downward (i.e., in a direction approaching the bobbin 26) when viewed from an imaginary plane P that vertically bisects the wire guide wall 604. Therefore, each of the left contact portion 606L and the right contact portion 606R contacts the wire W at a position close to the bobbin 26. This makes it possible to stabilize the trajectory of the wire W drawn out from the bobbin 26 immediately after the wire W is drawn out from the bobbin 26.

[0196] (effect) The reinforcing bar binding machine 2 of this embodiment includes a feed unit 50 that feeds the wire W, a guide unit 54 that guides the wire W around the reinforcing bar R, a reel support member 32 that supports a reel RL equipped with the wire W so that the reel RL is rotatable about a reel rotation axis AX1, and a wire guide wall 604 that is disposed between the feed unit 50 and the reel support member 32 and guides the wire W toward the feed unit 50. The reel RL includes a body 27 around which the wire W is wound, and a bobbin 26 that includes a flange 28L (an example of a first flange) disposed at one end of the body 27 in the direction in which the reel rotation axis AX1 extends, and a flange 28R (an example of a second flange) disposed at the other end of the body 27 in the direction in which the reel rotation axis AX1 extends. The wire guide wall 604 includes a left contact portion 606L (an example of a first wire contact portion) that contacts the wire W when the wire W is pulled out from a position adjacent to the flange portion 28L, and a right contact portion 606R (an example of a second wire contact portion) that contacts the wire W when the wire W is pulled out from a position adjacent to the flange portion 28R. Each of the left contact portion 606L and the right contact portion 606R is located downward when viewed from an imaginary plane P that bisects the wire guide wall 604 in an upward direction (an example of a second direction) and a downward direction (an example of a third direction).

[0197] According to the above configuration, the path along which the wire W is guided by the wire guide wall 604 is regulated by the left contact portion 606L and the right contact portion 606R. As a result, it is possible to suppress variations in the bending of the wire W. This suppresses variations in the trajectory of the wire W fed from the feed unit 50, and prevents the wire W from coming off the guide unit 54. Furthermore, each of the left contact portion 606L and the right contact portion 606R is located downward (i.e., in a direction approaching the bobbin 26) as viewed from an imaginary plane P that vertically bisects the wire guide wall 604. Therefore, each of the left contact portion 606L and the right contact portion 606R abuts against the wire W at a position close to the bobbin 26. This stabilizes the trajectory of the wire W unwound from the bobbin 26 immediately after the wire W is unwound from the bobbin 26.

[0198] Furthermore, the lower end of the wire guide wall 604 located to the left (an example of a fourth direction) as viewed from the wire W passing through the wire guide wall 604 functions as the left contact portion 606L. The lower end of the wire guide wall 604 located to the right (an example of a fifth direction) as viewed from the wire W passing through the wire guide wall 604 functions as the right contact portion 606R.

[0199] According to the above configuration, each of the left contact portion 606L and the right contact portion 606R is disposed at a position on the wire guide wall 604 that is as close to the bobbin 26 as possible. Therefore, each of the left contact portion 606L and the right contact portion 606R comes into contact with the wire W at a position close to the bobbin 26. This makes it possible to stabilize the trajectory of the wire W drawn out from the bobbin 26 immediately after the wire W is drawn out from the bobbin 26.

[0200] (Variation) In one embodiment, the abutting bodies 130, 230, 330, 430 may abut against the wire W from the right side. In this configuration, the left ends of the abutting bodies 130, 230, 330, 430 correspond to the abutting portions that abut against the wire W.

[0201] In one embodiment, the abutment bodies 130, 230, 330, 430 may be made of a resin material.

[0202] In one embodiment, with respect to the left-right direction, the left-right center of the abutment body 130, the right end of the abutment body 130, the left-right center of the wire guide hole 76, the left-right center between the first rotation axis AX3 and the second rotation axis AX4, the left-right center of the first wire passage 88, and the left-right center of the second wire passage 90 may all be offset to the right with respect to the left-right center of the bobbin 26. Furthermore, some of the left-right center of the abutment body 130, the right end of the abutment body 130, the left-right center of the wire guide hole 76, the left-right center between the first rotation axis AX3 and the second rotation axis AX4, the left-right center of the first wire passage 88, and the left-right center of the second wire passage 90 may be offset to the left with respect to the left-right center of the bobbin 26, and the rest may be offset to the right with respect to the left-right center of the bobbin 26.

[0203] In one embodiment, the rebar binding machine 2 may include a plurality of abutting bodies 130, 230, 330, 430. In this configuration, some of the plurality of abutting bodies 130, 230, 330, 430 may be able to abut against the wire W from the left side, and the remainder of the plurality of abutting bodies 130, 230, 330, 430 may be able to abut against the wire W from the right side. Furthermore, some of the plurality of abutting bodies 130, 230, 330, 430 may be arranged on the reel cover 6, and the remainder of the plurality of abutting bodies 130, 230, 330, 430 may be arranged on the main body housing 4.

[0204] In one embodiment, the reel support portion 22 may not have the reel accommodating space 36. In this configuration, when the reel cover 6 is in the inhibited state, a portion of the reel RL is exposed.

[0205] In one embodiment, the rebar binding machine 2 may be a device that moves autonomously on the rebars R.

[0206] A portion of the wire guide wall 604 other than the upper end of the flat wall 654 may function as the left abutment portion 606L. For example, a protrusion may be provided on the inner surface of the flat wall 654, and the protrusion may function as the left abutment portion 606L. Similarly, a portion of the wire guide wall 604 other than the upper end of the wall portion 602 may function as the right abutment portion 606R. For example, a protrusion may be provided on the inner surface of the wall portion 602, and the protrusion may function as the right abutment portion 606R. [Explanation of symbols]

[0207] 2: Rebar binding machine 6: Reel cover 10: Left housing 26: Bobbin 27: Torso 28, 28L, 28R: Tsuba 30: Base material 32: Reel support member 36: Reel storage space 50: Feed unit 52: Wire guide member 54: Guidance unit 70: First roller 72: Second roller 76: Wire guide hole 78:Entrance 78a:center 80:Exit 80a: center 130, 230, 330, 430: Contact object 138: Main body 140: Shaft section 144: Retaining surface 150: Guide surface 332: Operating member 404: Wire guide wall 450: Guide surface 504: Wire guide wall 550a: First guide surface 550b: Second guide surface 552: Wire guide member 604: Wire guide wall 606L: Left side contact part 606R: Right side contact part 650: Guide surface 652: Wire guide member 676: Wire guide hole 678:Entrance 680 :Exit AX1: Reel rotation axis AX2: Cover rotation axis BP: Battery pack R: Reinforced concrete RL: Reel W: Wire

Claims

1. a feeding unit for feeding the wire; a guide unit for guiding the wire around a reinforcing bar; a reel support member that supports a reel having the wire so as to be rotatable around a reel rotation axis; a wire guide member disposed between the feeding unit and the reel support member, for guiding the wire toward the feeding unit; A rebar tying machine comprising: an abutment body that is between the wire guide member and the reel support member and that can abut against the wire in the direction in which the reel rotation axis extends.

2. The reel support member further includes a reel stopper switchable between a prohibiting state that prohibits the reel from being removed from the reel support member and a permitting state that permits the reel to be removed from the reel support member, The reinforcing bar binding machine according to claim 1, wherein the abutment body is disposed on the reel stopper and is capable of abutting against the wire when the reel stopper is in the inhibited state.

3. the reel stopper moves in a first direction when switching from the permissive state to the forbidden state; The reinforcing bar binding machine according to claim 2, wherein the abutment body is capable of abutting against the wire in the first direction between the wire guide member and the reel support member when the reel stopper is in the inhibiting state.

4. The wire guide member has a wire guide hole through which the wire passes, When the reinforcing bar binding machine is viewed in a direction along a line connecting the center of the entrance of the wire guide hole and the center of the exit of the wire guide hole, the abutment body has When the reel stopper is in the inhibiting state, the reel stopper closes a part of the entrance of the wire guide hole, 4. A rebar tying machine as described in claim 2 or 3, wherein when the reel stopper is in the permissive state, the entrance of the wire guide hole is not blocked, or a portion of the entrance is blocked so that the area of ​​the area of ​​the entrance blocked by the abutment body is smaller than the area of ​​the area of ​​the entrance blocked by the abutment body when the reel stopper is in the prohibited state.

5. a guide surface disposed along a periphery of the entrance of the wire guide hole to guide the wire to the entrance of the wire guide hole; The reinforcing bar binding machine according to claim 4, wherein the guide surface faces the abutment body when the reel stopper is in the inhibited state.

6. The rebar binding machine according to claim 5 , further comprising a first guide wall on which the guide surface is formed and which is separate from the wire guide member.

7. The reinforcing bar binding machine according to claim 5 , wherein the guide surface is formed on the wire guide member.

8. The reinforcing bar tying machine according to any one of claims 4 to 7, wherein the abutment body blocks an area of ​​50% or more of the opening area of ​​the entrance of the wire guide hole when the reel stopper is in the prohibited state and the reinforcing bar tying machine is viewed in the direction along the line connecting the center of the entrance of the wire guide hole and the center of the exit of the wire guide hole.

9. The wire guide hole has a frustum shape in which an opening area of ​​the inlet is larger than an opening area of ​​the outlet, A reinforcing bar tying machine as described in any one of claims 4 to 8, wherein when the reinforcing bar tying machine is viewed in the direction along the line connecting the center of the entrance of the wire guide hole and the center of the exit of the wire guide hole with the reel stopper in the prohibited state, the abutment body blocks the entrance so that the area of ​​the area of ​​the entrance that is not blocked by the abutment body is less than or equal to the opening area of ​​the exit.

10. The abutment body is rotatable relative to the reel stopper. The reinforcing bar binding machine according to any one of claims 2 to 9.

11. the reel stopper is further provided with a housing that supports the reel stopper so that the reel stopper can be switched between the prohibiting state and the allowing state, The abutment body is a rotatable main body; a shaft portion that penetrates the main body portion and is supported by the reel stopper, The rebar tying machine according to claim 10, wherein the shaft portion is capable of abutting against the housing while penetrating the main body portion in a direction in which the shaft portion withdraws from the main body portion when the reel stopper is in the prohibited state.

12. The reinforcing bar binding machine according to claim 10 or 11, wherein the abutting body is a roller having a diameter at both ends of the abutting body larger than the diameter at the center of the abutting body.

13. The reinforcing bar binding machine according to any one of claims 2 to 9, wherein the abutment body is formed integrally with the reel stopper.

14. a reel stopper switchable between a prohibiting state that prohibits the reel from being removed from the reel support member and a permitting state that permits the reel to be removed from the reel support member; a housing that supports the reel stopper so that the reel stopper can be switched between the prohibiting state and the allowing state, and that supports the abutment body so that it can move; an operating member supported by the reel stopper and configured to operate the contact body, The rebar tying machine of claim 1, wherein the operating member operates the abutment body when the reel stopper switches from the allowable state to the prohibitive state, and switches the abutment body from a non-abutment state in which it does not abut against the wire to an abutment state in which it can abut against the wire.

15. The reinforcing bar binding machine according to any one of claims 1 to 14, wherein the abutment body is made of a metal material.

16. a feeding unit for feeding the wire; a guide unit for guiding the wire around a reinforcing bar; a reel support member that supports a reel having the wire so as to be rotatable around a reel rotation axis; a wire guide member disposed between the feeding unit and the reel support member, for guiding the wire toward the feeding unit; a contact body that contacts the wire between the wire guide member and the reel support member; a reel stopper switchable between a prohibiting state that prohibits the reel from being removed from the reel support member and a permitting state that permits the reel to be removed from the reel support member, the reel stopper moves in a first direction when switching from the permissive state to the forbidden state; The abutment body is arranged on the reel stopper and is capable of abutting against the wire in the first direction between the wire guide member and the reel support member when the reel stopper is in the prohibited state.

17. A rebar tying machine, a feeding unit for feeding the wire; a guide unit for guiding the wire around a reinforcing bar; a reel support member that supports a reel having the wire so as to be rotatable around a reel rotation axis; a wire guide member disposed between the feeding unit and the reel support member, for guiding the wire toward the feeding unit; a contact body that contacts the wire between the wire guide member and the reel support member; a reel stopper switchable between a prohibiting state that prohibits the reel from being removed from the reel support member and a permitting state that permits the reel to be removed from the reel support member, The wire guide member has a wire guide hole through which the wire passes, When the reinforcing bar binding machine is viewed in a direction along a line connecting the center of the entrance of the wire guide hole and the center of the exit of the wire guide hole, the abutment body has When the reel stopper is in the inhibiting state, the reel stopper closes a part of the entrance of the wire guide hole, A rebar tying machine that does not block the entrance of the wire guide hole when the reel stopper is in the permissive state, or blocks a portion of the entrance so that the area of ​​the area of ​​the entrance blocked by the abutment body is smaller than the area of ​​the area of ​​the entrance blocked by the abutment body when the reel stopper is in the prohibited state.

18. a feeding unit for feeding the wire; a guide unit for guiding the wire around a reinforcing bar; a reel support member that supports a reel having the wire so as to be rotatable around a reel rotation axis; a wire guide wall disposed between the feeding unit and the reel support member, for guiding the wire toward the feeding unit; the reel is provided with a bobbin including a body portion around which the wire is wound, a first flange portion disposed at one end of the body portion in the direction in which the reel rotation shaft extends, and a second flange portion disposed at the other end of the body portion in the direction in which the reel rotation shaft extends, The wire guide wall a first wire contact portion that contacts the wire when the wire is pulled out from a position adjacent to the first flange portion; a second wire abutment portion that abuts against the wire when the wire is pulled out from a position adjacent to the second flange portion, When a direction in which the wire toward the feeding unit passes through the wire guide wall is defined as a second direction, and a direction opposite to the second direction is defined as a third direction, A rebar tying machine in which each of the first wire abutment portion and the second wire abutment portion is located in the third direction when viewed from an imaginary plane that bisects the wire guide wall in the second direction and the third direction.

19. When a direction from the second flange to the first flange along the direction in which the reel rotation shaft extends is defined as a fourth direction, and a direction from the first flange to the second flange along the direction in which the reel rotation shaft extends is defined as a fifth direction, an end portion of the wire guide wall in the third direction, which is located in the fourth direction as viewed from the wire passing through the wire guide wall, functions as the first wire abutment portion; The rebar tying machine according to claim 18, wherein the end of the wire guide wall in the third direction, which is in the fifth direction as viewed from the wire passing through the wire guide wall, functions as the second wire abutment portion.

Images