Patent Grant
12098560
This disclosure herewith relates to a rebar tying tool.
Japanese Patent Application Publication No. 2019-112868 describes a rebar tying tool. The rebar tying tool includes a holder, a stopper, a driving roller, a driven roller, and a twisting unit. The holder is configured to hold a reel around which a wire is wound. The stopper is configured to switch between a prohibiting state in which the stopper prohibits the reel from detaching from the holder and an allowing state in which the stopper allows the reel to detach from the holder. The driving roller is configured to rotate. The driven roller is configured to switch between a clamped state and a non-clamped state, wherein the wire is clamped between the driving roller and the driven roller when the driven roller is in the clamped state, and the wire is not clamped between the driving roller and the driven roller when the driven roller is in the non-clamped state. The twisting unit is configured to twist the wire clamped between the driving roller and the driven roller and fed around rebars.
When the reel is to be replaced in the above rebar tying tool, firstly the stopper is switched from the prohibiting state to the allowing state. Then, the driven roller is switched from the clamped state to the non-clamped state. Then, the old reel is removed by an operator and a new reel is attached to the holder. Finally, a tip end of a wire wound on the reel is inserted between the driving roller and the driven roller in a state where the driven roller is kept in the non-clamped state by the operator. Due to this, reel replacement work is complicated. Further, in the above rebar tying tool, when a reel is to be attached to the holder in a state where no reel is held by the holder, firstly the stopper is switched from the prohibiting state to the allowing state. Then, the driven roller is switched from the clamped state to the non-clamped state. Then, the new reel is attached to the holder by the operator. Finally, the operator inserts the tip end of the wire wound on the reel is inserted between the driving roller and the driven roller in the state where the driven roller is kept in the non-clamped state by the operator. Due to this, reel attachment work is complicated. The description herein provides an art configured to facilitate reel replacement work and reel attachment work.
The present teachings disclose a rebar tying tool. The rebar tying tool is configured to tie rebars with a wire. The rebar tying tool may comprise: a holder; a stopper; a driving roller; a driven roller; a driven roller; and a twisting unit. The holder may be configured to hold a reel around which the wire is wound about a rotation axis. The stopper may be configured to switch between a prohibiting state in which the stopper prohibits the reel from detaching from the holder and an allowing state in which the stopper allows the reel to detach from the holder. The driving roller may be configured to rotate. The driven roller may be configured to switch between a clamped state and a non-clamped state, the wire is clamped between the driving roller and the driven roller when the driven roller is in the clamped state, and the wire is not clamped between the driving roller and the driven roller when the driven roller is in the non-clamped state. The twisting unit may be configured to twist the wire clamped between the driving roller and the driven roller and fed around the rebars. The driven roller may be in the non-clamped state at all times while the stopper is in the allowing state.
In the above configuration, since the driven roller is in the non-clamped state at all times when the stopper is in the allowing state, the tip end of the wire wound on the reel can easily be inserted between the driving roller and the driven roller upon replacing the reel. Due to this, reel replacement work can easily be performed. Further, in the above configuration, when the reel is to be attached to the holder, the tip end of the wire wound on the reel can easily be inserted between the driving roller and the driven roller. Due to this, reel attachment work can easily be performed.
Further, the present teachings disclose a rebar tying tool. The rebar tying tool is configured to tie rebars with a wire. The rebar tying tool may comprise: a holder; a stopper; an operating part; a driving roller; a driven roller; and a twisting unit. The holder may be configured to hold a reel around which the wire is wound about a rotation axis. The stopper may be configured to switch between a prohibiting state in which the stopper prohibits the reel from detaching from the holder and an allowing state in which the stopper allows the reel to detach from the holder. The driving roller may be configured to rotate. The driven roller may be configured to switch between a clamped state and a non-clamped state, in which the wire is clamped between the driving roller and the driven roller when the driven roller is in the clamped state, and the wire is not clamped between the driving roller and the driven roller when the driven roller is in the non-clamped state. The twisting unit may be configured to twist the wire clamped between the driving roller and the driven roller and fed around the rebars. The driven roller may switch from the clamped state to the non-clamped state and the stopper may switch from the prohibiting state to the allowing state when the operating part is operated.
In the above configuration, the driven roller can be switched from the clamped state to the non-clamped state and further the stopper can be switched from the prohibiting state to the allowing state by simply operating only the operating part. Due to this, the reel replacement work and attachment work can easily be performed.
In one or more aspects, the rebar tying tool may further comprise an operating part configured to move between an open position and a closed position. The driven roller may switch from the clamped state to the non-clamped state and the stopper may switch from the prohibiting state to the allowing state when the operating part is operated from the closed position toward the open position.
In the above configuration, the driven roller can be switched from the clamped state to the non-clamped state and further the stopper can be switched from the prohibiting state to the allowing state by simply operating only the operating part. Due to this, reel replacement work and attachment work can easily be performed.
In one or more aspects, the rebar tying tool may further comprise an operating part configured to move between an open position and a closed position. The driven roller may switch from the non-clamped state to the clamped state and the stopper may switch from the allowing state to the prohibiting state when the operating part is operated from the open position toward the closed position.
In the above configuration, the driven roller can be switched from the non-clamped state to the clamped state and further the stopper can be switched from the allowing state to the prohibiting state by simply operating only the operating part. Due to this, the reel replacement work and attachment work can easily be performed.
In one or more aspects, the rebar tying tool may further comprise a link part disposed between the operating part and the driven roller. The link part may be located in a first position when the operating part is located in the closed position, the driven roller being in the clamped state while the link part is located in the first position. The link part may be located in a second position when the operating part is located in the open position, the driven roller being in the non-clamped state while the link part is located in the second position.
In the above configuration, the driven roller can be switched between the clamped state and the non-clamped state and further the stopper can be switched between the prohibiting state and the allowing state with a simple configuration.
In one or more aspects, the operating part may comprise a cam part. The cam part may be configured to move the link part from the first position to the second position when the operating part is operated from the closed position toward the open position.
In the above configuration, by using the cam part, a direction of operating the operating part and a direction in which the link part moves can be made to differ. Due to this, a size of the rebar tying tool can be suppressed from becoming large as compared to a case in which the direction of operating the operating part and the direction in which the link part moves are same.
In one or more aspects, the operating part may be configured to pivot about a pivot axis. The cam part may gradually extend toward a link part side in a direction along which the pivot axis extends, the cam part gradually extending toward the link part side at a greater degree along one direction about the pivot axis. The cam part may be configured to move the link part from the first position to the second position while being in contact with the link part when the operating part pivots to another direction about the pivot axis.
In the above configuration, as the cam part pivots to the other side about the pivot axis, a position at which the cam part and the link part contact each other gradually changes along the direction in which the pivot axis extends. As a result of this, the link part moves from the first position to the second position. Due to this, the link part can be moved from the first position to the second position by such a simple configuration of the cam part.
In one or more aspects, the rebar tying tool may further comprise a first biasing part configured to bias the link part from the second position toward the first position.
In the above configuration, the driven roller can be biased from the non-clamped state toward the clamped state by the link part being biased from the second position toward the first position.
In one or more aspects, the operating part may comprise a lever part configured to be operated by an operator. The stopper may comprise an engaging part configured to engage with the lever part when the stopper is in the prohibiting state. The lever part may keep the stopper in the prohibiting state when the lever part engages with the engaging part.
In the above configuration, the stopper can be suppressed from switching from the prohibiting state to the allowing state while the lever part is not being operated by the operator.
In one or more aspects, at least a part of the operating part may be disposed between the reel and the driven roller when the rebar tying tool is viewed along a direction in which the rotation axis extends.
Generally, the reel is disposed away from the driven roller in order to pull out the wire from the reel. In the above configuration, a space defined between the reel and the driven roller can be utilized efficiently. Due to this, the size of the rebar tying tool can be suppressed from becoming large.
In one or more aspects, when a direction in which the rebars are disposed as viewed from the twisting unit is a front direction and a direction in which the rotation axis extends is a left-right direction, the operating part may be disposed higher than the reel and lower than the driven roller.
In the above configuration, the operating part is disposed between the reel and the driven roller in an up-down direction. Due to this, the size of the rebar tying tool can be suppressed from becoming large in the up-down direction.
In one or more aspects, the driven roller may be disposed more on one side than the driving roller is in the direction in which the rotation axis extends. The stopper may be disposed more on the one side than the holder is in the direction in which the rotation axis extends.
If the driven roller is disposed more on the one side than the driving roller is in the direction in which the rotation axis extends and the stopper is disposed more on another side than the holder is in the direction in which the rotation axis extends, the driven roller switches from the clamped state to the non-clamped state toward one side, and the stopper switches from the prohibiting state to the allowing state toward the one side. Due to this, the size of the rebar tying tool becomes large in the direction in which the rotation axis extends. In the above configuration, the driven roller switches from the clamped state to the non-clamped state toward one side, and the stopper switches from the prohibiting state to the allowing state toward the one side. Due to this, the size of the rebar tying tool can be suppressed from becoming large in the direction in which the rotation axis extends.
In one or more aspects, the rebar tying tool may further comprise a motor configured to rotate the driving roller. The operating part may be disposed more on the one side than the motor is in the direction in which the rotation axis extends.
If the operating part is disposed more on another side than the motor is in the direction in which the rotation axis extends, a mechanism that switches the driven roller between the clamped state and the non-clamped state by the operating part is disposed traversing across the motor. Due to this, the size of the rebar tying tool becomes large in the direction in which the rotation axis extends. In the above configuration, the mechanism that switches the driven roller between the clamped state and the non-clamped state by the operating part is not disposed traversing across the motor. Due to this, the size of the rebar tying tool can be suppressed from becoming large in the direction in which the rotation axis extends.
In one or more aspects, the rebar tying tool may further comprise: a motor configured to rotate the driving roller; and a reduction gear unit configured to decelerate rotation of the motor. The operating part may be disposed more on the one side than the motor is in the direction in which the rotation axis extends. The link part may be disposed more on the one side than the reduction gear unit is in the direction in which the rotation axis extends.
In the above configuration, the link part is not disposed traversing across the reduction gear unit. Due to this, the size of the rebar tying tool can be suppressed from becoming large in the direction in which the rotation axis extends as compared to a case where the link part is disposed traversing across the reduction gear unit.
In one or more aspects, the holder may include an opening. The stopper may be configured to close the opening when the stopper is in the prohibiting state. An accommodating space may be defined by the holder and the stopper. The reel may be placed in the accommodating space.
In the above configuration, the opening of the holder can be closed by the stopper when the stopper is in the prohibiting state, and the reel can easily be placed in the accommodating space.
In one or more aspects, the rebar tying tool may further comprise a pivoting part connecting the holder with the stopper. The stopper may be configured to pivot with respect to the holder by the pivoting part. The reel may be disposed between the pivoting part and the driven roller when the rebar tying tool is viewed along the direction in which the rotation axis extends.
If the stopper is disposed on the same side as the driven roller with respect to the reel in a state where the opening of the holder is open, a hand of the operator may interfere with the stopper, and the operator cannot easily insert the wire between the driving roller and the driven roller. In the above configuration, in the state where the stopper is opening the opening of the holder, the stopper is disposed on an opposite side from the driven roller with the reel interposed therebetween. Due to this, the hand of the operator is suppressed from interfering with the stopper, and the operator can easily insert the wire between the driving roller and the driven roller.
In one or more aspects, the rebar tying tool may further comprise a second biasing part configured to bias the stopper from the prohibiting state to the allowing state.
In the above configuration, when the reel is to be removed from the holder, the stopper can be kept in the allowing state by the second biasing part.
In one or more aspects, the driving roller may have an outer circumferential surface comprising first teeth. The driven roller may have an outer circumferential surface comprising second teeth configured to mesh with the first teeth.
In the above configuration, performance of the driven roller to follow the driving roller can be improved by the first teeth meshing with the second teeth.
In one or more aspects, the rebar tying tool may further comprise a main body. The cam part may be disposed inside the main body. The operating part may further comprise: a lever part disposed outside the main body and configured to be operated by an operator; and a coupler penetrating the main body and coupling the cam part with the lever part. One of the lever part and the cam part may be configured to slide along the main body. The rebar tying tool may further comprise a third biasing member configured to bias the operating part with respect to the main body in a direction along which the one of the lever part and the cam part is pressed against the main body.
In the above configuration, one of the lever part and the cam part is pressed against the main body due to a biasing force of the third biasing member being applied to one of the lever part and the cam part. Thus, wobbling of the operating part can be suppressed.
In one or more aspects, the lever part may be configured to slide along an outer surface of the main body and keep the stopper in the prohibiting state. The third biasing member may be configured to bias the cam part toward inside the main body.
In the above configuration, since the cam part is biased toward inside the main body by the biasing force of the third biasing member being applied to the cam part, the lever part is thereby pressed against the outer surface of the main body. In this case, foreign matters can be suppressed from being caught between the lever part and the outer surface of the main body. Due to this, sliding performance of the operating part can be suppressed from decreasing while at the same time the wobbling of the operating part can be suppressed.
In one or more aspects, the third biasing member may comprise a compression spring. The coupler may pass inside the compression spring.
In the above configuration, a space required inside the main body to dispose the cam part, the coupler, and the compression spring can be reduced.
In one or more aspects, the rebar tying tool may further comprise a protrusion part and a recess both disposed inside the main body and configured to engage with each other. A position of one of the protrusion part and the recess may be fixed with respect to the cam part. A position of another of the protrusion part and the recess may be fixed with respect to the main body.
In the above configuration, the protrusion part and the recess are disposed inside the main body. As compared to a case where the protrusion part and the recess are disposed outside the main body, collision of objects such as rebars with the protrusion part and the recess can be suppressed from occurring, and the protrusion part and the recess can be suppressed from being damaged. Due to this, an occurrence of engagement defect between the protrusion part and the recess can be suppressed.
A rebar tying tool 2 of a first embodiment will be described with reference to
As shown in
The grip 6 is a member for an operator to grip. The grip 6 is arranged at a rear lower portion of the main body 4. The grip 6 is integrated with the main body 4. The grip 6 comprises a left grip 6a and a right grip 6b. The left grip 6a composes an outer shape of a left half of the grip 6. The right grip 6b composes an outer shape of a right half of the grip 6. The left grip 6a and the right grip 6b are fixed by screws 7.
A trigger 12 is disposed at a front upper portion of the grip 6. When the trigger 12 is pressed in, a tying operation of tying the rebars R with the wire W is started.
The battery receptacle 8 is disposed below the grip 6. The battery receptacle 8 is integrated with the grip 6. The battery receptacle 8 comprises a left battery receptacle 8a and a right battery receptacle 8b. The left battery receptacle 8a composes an outer shape of a left half of the battery receptacle 8. The right battery receptacle 8b composes an outer shape of a right half of the battery receptacle 8. The left battery receptacle 8a and the right battery receptacle 8b are fixed by screws 9a, 9b.
A battery B is detachably attached to the battery receptacle 8. The battery B may for example be a lithium ion battery. As shown in
As shown in
The pivoting part 22 is attached to a lower portion of the base part 18a of the holder 18. The pivoting part 22 connects the base part 18a and the cover 20. The cover 20 is disposed more on the left side than the base part 18a is. The cover 20 is capable of pivoting with respect to the base part 18a by the pivoting part 22. An accommodating space 30 is defined between the holder 18 and the cover 20. The reel 26 is placed in the accommodating space 30. In this state, the shaft 18b is inserted in the bearing hole 27a of the reel 26. The cover 20 is configured to move between a prohibiting state and an allowing state. As shown in
As shown in
The reduction gear unit 50 is connected to the feeding motor 48. The reduction gear unit 50 is configured to decelerate rotation of the feeding motor 48 by a plurality of reduction gears.
The feeding part 52 is disposed at the front lower portion of the main body 4. As shown in
The guide part 60 is disposed above the accommodating part 16. The guide part 60 is supported by the base part 58. The guide part 60 is configured to guide the wire W drawn out from the reel 26 upward. The wire W extends through inside the guide part 60.
The driving roller 62 and the driven roller 64 are disposed higher than the guide part 60. Teeth 62a and a groove 62b are arranged on an outer circumferential surface of the driving roller 62. The teeth 62a mesh with the output gear 50a of the reduction gear unit 50. Due to this, rotation of the feeding motor 48 is transmitted to the driving roller 62 via the reduction gear unit 50. The groove 62b extends in the outer circumferential surface of the driving roller 62 in a direction tracing a rotation direction of the driving roller 62.
The driven roller 64 is disposed more on the left side than the feeding motor 48, the reduction gear unit 50, and the driving roller 62 are. Teeth 64a and a groove 64b are arranged on an outer circumferential surface of the driven roller 64. The teeth 64a of the driven roller 64 mesh with the teeth 62a of the driving roller 62. The groove 64b extends in the outer circumferential surface of the driven roller 64 in a direction tracing a rotation direction of the driven roller 64.
The link part 66 is disposed more on the left side than the driven roller 64 is and on the right side than an operating part 82 to be described later is. That is, the link part 66 is disposed between the driven roller 64 and the operating part 82 in the left-right direction. The link part 66 extends in the up-down direction (see
As shown in
As shown in
As shown in
As aforementioned, the feeding mechanism 40 includes the guiding part 54. As shown in
The cutting mechanism 42 is accommodated in the main body 4. The cutting mechanism 42 comprises a cutter that is not shown. The cutter is configured to cut the wire W by rotating in cooperation with operation of the twisting mechanism 44.
The twisting mechanism 44 is accommodated in the main body 4. The twisting mechanism 44 extends inside the main body 4 in the front-rear direction. The twisting mechanism 44 comprises a twisting motor 72, a reduction gear unit 74, and a twisting unit 76. The twisting motor 72 is configured to rotate by electric power supplied from the battery B. The twisting motor 72 is controlled by the controller 10.
The reduction gear unit 74 is connected to a front portion of the twisting motor 72. The reduction gear unit 74 is configured to decelerate rotation of the twisting motor 72 by a plurality of reduction gears and transmit the decelerated rotation to the twisting unit 76.
The twisting unit 76 is configured to advance, retract, and rotate in accordance with the rotation of the twisting motor 72. When the rebar tying tool 2 is set on the rebars R, the rebars R are placed in front of the twisting unit 76. The twisting unit 76 comprises a retaining member 78. The retaining member 78 is located in the front portion of the twisting unit 76. The retaining member 78 comprises two members 78a, 78b that overlap each other in the up-down direction. The two members 78a, 78b are configured to move in the left-right direction so as to approach each other in accordance with the rotation of the twisting motor 72. Due to this, the retaining member 78 is configured to switch between a fully opened state, a half-opened state, and a closed state. Although a detailed configuration of the retaining member 78 will be omitted from the description, when the retaining member 78 switches from the fully opened state to the half-opened state, one point on the wire W wrapped around the rebars R is thereby retained. When the retaining member 78 switches from the half-opened state to the closed state, another point on the wire W wrapped around the rebars R is further retained.
Next, the tying operation of the wire W on the rebars R will be described. Before the tying operation is performed, that is, before the trigger 12 is pressed in, the driven roller 64 is kept in the clamped state and the wire W is clamped between the groove 62b of the driving roller 62 and the groove 64b of the driven roller 64 as shown in
From this state, when the rotation of the feeding motor 48 stops and the twisting motor 72 rotates, the retaining member 78 switches from the fully opened state to the half-opened state. Due to this, the tip end of the wire W is retained by the retaining member 78.
From this state, when the rotation of the twisting motor 72 stops and the feeding motor 48 rotates in reverse, the wire W is pulled back onto the reel 26 by the driving roller 62 and the driven roller 64. Since the tip end of the wire W is retained by the retaining member 78, the loop of the wire W around the rebars R is tightened by this pullback of the wire W, and the wire W comes into tight contact with the rebars R.
From this state, when the feeding motor 48 stops and the twisting motor 72 rotates, the retaining member 78 switches from the half-opened state to the closed state. Due to this, a trailing end of the wire W is retained by the retaining member 78. Further, when the twisting motor 72 rotates, the wire W is cut at a position more on a reel 26 side than its trailing end by pivoting of the cutter of the cutting mechanism 42.
From this state, when the twisting motor 72 rotates, the twisting unit 76 moves rearward, and thereafter rotates. Due to this, the wire W is pulled back and thereafter twisted. As a result, the rebars R are tied by the wire W. After this, series of operations for returning the respective constituent components of the rebar tying tool 2 to their pre-tying operation state are executed by the controller 10.
After the tying operation by the wire W on the rebars R as aforementioned is repeated, and when a remaining amount of the wire W wound on the reel 26 becomes equal to or less than a predetermined amount by which the rebars R can no longer be tied, replacement work of the reel 26 is performed by the operator. As shown in
From this state, the operator pulls out the wire W from between the driving roller 62 and the driven roller 64 and from the guide part 60, and removes the reel 26 from the holder 18. Then, the operator attaches a replacement reel 26 on the holder 18 and inserts a tip end of a wire W wound on this reel 26 into the guide part 60 and between the driving roller 62 and the driven roller 64.
From this state, after the cover 20 is switched from the allowing state to the prohibiting state by the operator and when the lever part 84 is operated to pivot from the open position to the closed position, the edge 88 of the cam part 86 pivots about the pivot axis RX. In viewing the rebar tying tool 2 in the right direction, since the edge 88 separates away from the link part 66 by moving in a counterclockwise direction about the pivot axis RX, the lower portion of the link part 66 moves leftward by the biasing force of the biasing part 68 as the cam part 86 pivots. Due to this, the link part 66 pivots from the second position toward the first position about its pivot axis extending in the front-rear direction. Due to this, as shown in
Further, for example, when the rebar tying tool 2 is purchased, for example, the reel 26 is not held in the holder 18. In this case, attachment work of the reel 26 is performed by the operator. As shown in
From this state, the operator attaches a replacement reel 26 on the holder 18 and inserts a tip end of a wire W wound on this reel 26 into the guide part 60 and between the driving roller 62 and the driven roller 64.
From this state, after the cover 20 is switched from the allowing state to the prohibiting state by the operator and when the lever part 84 is operated to pivot from the open position to the closed position, the edge 88 of the cam part 86 pivots about the pivot axis RX. The lower portion of the link part 66 moves leftward by the biasing force of the biasing part 68 as the cam part 86 pivots. Due to this, the link part 66 pivots from the second position toward the first position about its pivot axis extending in the front-rear direction. Due to this, as shown in
The rebar tying tool 2 of the present embodiment is configured to tie the rebars R using the wire W. The rebar tying tool 2 comprises the holder 18, the cover 20, the driving roller 62, the driven roller 64, and the twisting unit 76. The holder 18 is configured to hold the reel 26 on which the wire W is wound about the rotation axis extending in the left-right direction. The cover 20 is configured to switch between the prohibiting state in which the cover 20 prohibits the reel 26 from detaching from the holder 18 and the allowing state in which the cover 20 allows the reel 26 to detach from the holder 18. The driving roller 62 is configured to rotate. The driven roller 64 is configured to switch between the clamped state and the non-clamped state, in which the wire W is clamped between the driving roller 62 and the driven roller 64 when the driven roller 64 is in the clamped state, and the wire W is not clamped between the driving roller 62 and the driven roller 64 when the driven roller 64 is in the non-clamped state. The twisting unit 76 is configured to twist the wire W clamped between the driving roller 62 and the driven roller 64 and fed out around the rebars R. While the cover 20 is in the allowing state, the driven roller 64 is in the non-clamped state at all times. In this configuration, since the driven roller 64 is in the non-clamped state at all times while the cover 20 is in the allowing state, the tip end of the wire W wound on the reel 26 can easily be inserted between the driving roller 62 and the driven roller 64 upon replacing the reel 26. Due to this, the replacement work of the reel 26 can easily be performed. Further, when the reel 26 is to be attached to the holder 18, the tip end of the wire W wound on the reel 26 can easily be inserted between the driving roller 62 and the driven roller 64. Due to this, the attachment work of the reel 26 can easily be performed.
Further, the rebar tying tool 2 further comprises the operating part 82 configured to move between the closed position and the open position. When the operating part 82 is operated from the closed position toward the open position, the driven roller 64 switches from the clamped state to the non-clamped state and the cover 20 switches from the prohibiting state to the allowing state. In this configuration, the driven roller 64 can be switched from the clamped state to the non-clamped state and further the cover 20 can be switched from the prohibiting state to the allowing state by simply operating only the operating part 82. Due to this, steps in the reel replacement work can be reduced prior to inserting the tip end of the wire W wound on the reel 26 between the driving roller 62 and the driven roller 64. Thus, the replacement work and the attachment work of the reel 26 can easily be performed.
Further, the rebar tying tool 2 further comprises the operating part 82 configured to move between the closed position and the open position. When the operating part 82 is operated from the open position toward the closed position, the driven roller 64 switches from the non-clamped state to the clamped state and the cover 20 switches from the allowing state to the prohibiting state. In this configuration, the driven roller 64 can be switched from the non-clamped state to the clamped state and further the cover 20 can be switched from the allowing state to the prohibiting state by simply operating only the operating part 82. Due to this, steps in the reel replacement work can be reduced after inserting the tip end of the wire W wound on the reel 26 between the driving roller 62 and the driven roller 64. Thus, the replacement work and the attachment work of the reel 26 can easily be performed.
Further, the rebar tying tool 2 further comprises the link part 66 disposed between the operating part 82 and the driven roller 64. When the operating part 82 is located in the closed position, the link part 66 is located in the first position at which the driven roller 64 is in the clamped state, and when the operating part 82 is located in the open position, the link part 66 is located in the second position at which the driven roller 64 is in the non-clamped state. In this configuration, the driven roller 64 can be switched between the clamped state and the non-clamped state and further the cover 20 can be switched between the prohibiting state and the allowing state with a simple configuration.
Further, the operating part 82 comprises the cam part 86. When the operating part 82 is operated from the closed position toward the open position, the cam part 86 moves the link part 66 from the first position to the second position. In this configuration, a direction of operating the operating part 82 and a direction in which the link part 66 moves can be made to differ by the cam part 86. Due to this, a size of the rebar tying tool 2 can be suppressed from becoming large as compared to a case in which the direction of operating the operating part 82 and the direction in which the link part 66 moves are same.
Further, the operating part 82 is configured to pivot about the pivot axis. The cam part 86 extends gradually toward the link part 66 side in the left-right direction, which is the direction along which the pivot axis extends, by gradually extending toward the link part 66 at a greater degree along one direction about the pivot axis. When the operating part 82 pivots to another direction about the pivot axis, the cam part 86 comes into contact with the link part 66 and thereby moves the link part 66 from the first position to the second position. In this configuration, as the cam part 86 pivots to the other direction about the pivot axis, the position at which the cam part 86 and the link part 66 contact each other gradually changes rightward along the left-right direction in which the pivot axis extends. As a result of this, the link part 66 moves from the first position to the second position. The link part 66 can be moved from the first position to the second position by a simple configuration of the cam part 86.
Further, the rebar tying tool 2 further comprises the biasing part 68 configured to bias the link part 66 from the second position toward the first position. In this configuration, with the link part 66 being biased from the second position toward the first position, the driven roller 64 can be biased from the non-clamped state to the clamped state.
Further, the operating part 82 comprises the lever part 84 configured to be operated by operator. The cover 20 comprises the engaging part 92 configured to engage with the lever part 84 when the cover 20 is in the prohibiting state. The lever part 84 engages with the engaging part 92, by which the lever part 84 keeps the cover 20 in the prohibiting state. In this configuration, the cover 20 can be suppressed from switching from the prohibiting state to the allowing state while the lever part 84 is not operated by the operator.
Further, when the rebar tying tool 2 is viewed along the left-right direction in which the rotation axis of the reel 26 extends, the operating part 82 is disposed between the reel 26 and the driven roller 64. Generally, the reel 26 is disposed away from the driven roller 64 in order to pull out the wire W from the reel 26. In the above configuration, the space defined between the reel 26 and the driven roller 64 can be utilized efficiently. Due to this, the size of the rebar tying tool 2 can be suppressed from becoming large.
Further, when the direction in which the rebars R are placed as viewed from the twisting unit 76 is the front direction and the direction in which the rotation axis of the reel 26 extends is the left-right direction, the operating part 82 is disposed higher than the reel 26 and lower than the driven roller 64. In this configuration, the operating part 82 is disposed between the reel 26 and the driven roller 64 in the up-down direction. Due to this, the size of the rebar tying tool 2 can be suppressed from becoming large in the up-down direction.
The driven roller 64 is disposed more on the left side than the driving roller 62 is in the left-right direction in which the rotation axis of the reel 26 extends. The cover 20 is disposed more on the left side than the holder 18 is in the left-right direction in which the rotation axis of the reel 26 extends. If the driven roller 64 is disposed more on the left side than the driving roller 62 is and the cover 20 is disposed more on the right side than the holder 18 is, the driven roller 64 switches from the clamped state to the non-clamped state as it moves leftward, and the cover 20 switches from the prohibiting state to the allowing state toward as it moves rightward. Due to this, the size of the rebar tying tool 2 would become large in the left-right direction. In the above configuration, the driven roller 64 switches from the clamped state to the non-clamped state as it moves leftward, and the cover 20 switches from the prohibiting state to the allowing state toward as it moves leftward. Due to this, the size of the rebar tying tool 2 can be suppressed from becoming large in the left-right direction.
Further, the rebar tying tool 2 further comprises the feeding motor 48 configured to rotate the driving roller 62. The operating part 82 is disposed more on the left side than the feeding motor 48 is in the left-right direction in which the rotation axis of the reel 26 extends. If the operating part 82 is disposed more on the right side than the feeding motor 48 is in the left-right direction, the mechanism that switches the driven roller 64 between the clamped state and the non-clamped state by the operating part 82 is disposed traversing across the feeding motor 48. Due to this, the size of the rebar tying tool 2 becomes large in the left-right direction. In the above configuration, the mechanism that switches the driven roller 64 between the clamped state and the non-clamped state by the operating part 82 is not disposed traversing across the feeding motor 48. Due to this, the size of the rebar tying tool 2 can be suppressed from becoming large in the left-right direction.
Further, the rebar tying tool 2 further comprises the feeding motor 48 configured to rotate the driving roller 62 and the reduction gear unit 50 configured to decelerate the rotation of the feeding motor 48. The operating part 82 is disposed more on the left side than the feeding motor 48 is in the left-right direction in which the rotation axis of the reel 26 extends. The link part 66 is disposed more on the left side than the reduction gear unit 50 is in the left-right direction. In this configuration, the link part 66 is not disposed traversing across the reduction gear unit 50. Due to this, the size of the rebar tying tool 2 can be suppressed from becoming large in the left-right direction as compared to the case in which the link part 66 is disposed traversing across the reduction gear unit 50.
Further, the holder 18 comprises the opening 28. The cover 20 is configured to close the opening 28 when it is in the prohibiting state. The accommodating space 30 is defined by the holder 18 and the cover 20. The reel 26 is placed in the accommodating space 30. In this configuration, the reel 26 can easily be placed in the accommodating space 30 by closing the opening 28 of the holder 18 when the cover 20 is in the prohibiting state.
Further, the rebar tying tool 2 further comprises the pivoting part 22 connecting the holder 18 and the cover 20. The cover 20 is configured to pivot with respect to the holder 18 by the pivoting part 22. When the rebar tying tool 2 is viewed in the direction in which the rotation axis of the reel 26 extends, the reel 26 is disposed between the pivoting part 22 and the driven roller 64. If the cover 20 is disposed on the same side as the driven roller 64 with respect to the reel 26 in the state where the cover 20 is keeping the opening 28 of the holder 18 open, a hand of the operator may interfere with the cover 20, and the operator cannot easily insert the wire W between the driving roller 62 and the driven roller 64. In the above configuration, in the state where the cover 20 is keeping the opening 28 of the holder 18 open, the cover 20 is disposed on the opposite side from the driven roller 64 with the reel 26 interposed therebetween. Due to this, the hand of the operator is suppressed from interfering with the cover 20, and the operator can easily insert the wire W between the driving roller 62 and the driven roller 64.
Further, the rebar tying tool 2 further comprises the biasing part 24 configured to bias the cover 20 from the prohibiting state to the allowing state. In this configuration, when the reel 26 is to be removed from the holder 18, the cover 20 can be kept in the allowing state by the biasing part 24.
Further, the teeth 62a are disposed on the outer circumferential surface of the driving roller 62. The teeth 64a configured to mesh with the teeth 62a are disposed on the outer circumferential surface of the driven roller 64. In this configuration, performance of the driven roller 64 to follow the driving roller 62 can be improved by the teeth 62a of the driving roller 62 meshing with the teeth 64a of the driven roller 64.
Further, the rebar tying tool 2 of the present embodiment ties the rebars R using the wire W. The rebar tying tool 2 comprises the holder 18, the cover 20, the operating part 82, the driving roller 62, the driven roller 64, and the twisting unit 76. The holder 18 is configured to hold the reel 26 on which the wire W is wound about the rotation axis. The cover 20 is configured to switch between the prohibiting state in which the cover 20 prohibits the reel 26 from detaching from the holder 18 and the allowing state in which the cover 20 allows the reel 26 to detach from the holder 18. The driving roller 62 is configured to rotate. The driven roller 64 is configured to switch between the clamped state and the non-clamped state, in which the wire W is clamped between the driving roller 62 and the driven roller 64 when the driven roller 64 is in the clamped state, and the wire W is not clamped between the driving roller 62 and the driven roller 64 when the driven roller 64 is in the non-clamped state. The twisting unit 76 is configured to twist the wire W clamped between the driving roller 62 and the driven roller 64 and fed out around the rebars R. When the operating part 82 is operated, the driven roller 64 switches from the clamped state to the non-clamped state and the cover 20 switches from the prohibiting state to the allowing state. In this configuration, the driven roller 64 can be switched from the clamped state to the non-clamped state and further the cover 20 can be switched from the prohibiting state to the allowing state by simply operating only the operating part 82. Due to this, the replacement work and the attachment work of the reel 26 can easily be performed.
(Corresponding Relationship)
The cover 20 is an example of “stopper”, the feeding motor 48 is an example of “motor”, the biasing part 68 is an example of “first biasing part”, the biasing part 24 is an example of “second biasing part”, the teeth 62a of the driving roller 62 are an example of “first teeth”, and the teeth 64a of the driven roller 64 are an example of “second teeth”.
A rebar tying tool 202 of a second embodiment will be described with reference to
The grip 206 is configured to be gripped by the operator. The grip 206 is connected to a rear lower portion of the main body 204. The grip 206 is integrated with the main body 204. The grip 206 comprises a right grip 206a that composes an outer shape of its right half and a left grip 206b that composes an outer shape of its left half.
A trigger 212 is attached at an upper portion of a front surface of the grip 206. The trigger 212 is configured to be operated by the operator. As shown in
As shown in
The battery receptacle 208 is connected to a lower portion of the grip 206. The battery receptacle 208 is integrated with the grip 206. The battery B is detachably attached to the battery receptacle 208. The battery receptacle 208 comprises a right battery receptacle 208a that composes an outer shape of its right half and a left battery receptacle 208b that composes an outer shape of its left half. A coupler 209 is arranged on a front upper portion of the battery receptacle 208. The coupler 209 is integrated with the battery receptacle 208. As shown in
The rebar tying tool 202 further comprises a controller 220. The controller 220 is accommodated in the battery receptacle 208. The controller 220 and the trigger switch 213 are electrically connected by a fifth connecting cable 221. The fifth connecting cable 221 extends from the trigger switch 213 through inside the grip 206, and further extends inside the battery receptacle 208 to the controller 220. When the trigger 212 is pressed in, the controller 220 detects a signal from the trigger switch 213 and executes control for starting a tying operation for tying a wire W around rebars R.
As shown in
The indicator 218 and the controller 220 are electrically connected by a sixth connecting cable 219 (see
As shown in
An indicator 234 and an adjusting unit 236 are disposed on the rear surface 222a of the accommodating part main body 222. The indicator 234 is configured to display a status of the rebar tying tool 202, such as a tying condition for tying the wire W around the rebars R and remaining charge in the battery B. The adjusting unit 236 is configured to accept an operation by the operator for adjusting a tying force of the wire W. In the present embodiment, the adjusting unit 236 comprises two microswitches 236a, 236b. When the microswitch 236a is operated, a set value of the tying force of the wire W increases by one level, and when the microswitch 236b is operated, the set value of the tying force of the wire W decreases by one level. The adjusting unit 236 is not limited to the microswitches 236a, 236b, and may comprise a dial switch.
As shown in
As shown in
As shown in
As shown in
The rebar tying tool 202 comprises a feeding part 250, a cutter unit 252, and a twisting unit 254. The feeding part 250 is disposed at the front lower portion of the main body 204. As shown in
The feeding motor 256, the reduction gear unit 258, and the feeding part 260 are accommodated in the main body 204. The feeding motor 256 may for example be a brushless motor. The feeding motor 256 is disposed on the right side of the right main body 204a, and is covered by the motor cover 204c (see
As shown in
The feeding part 260 comprises a base part 270, a guide part 272, a driving roller 274, a driven roller 276, a link part 278, and a biasing part 280. The base part 270 is fixed to the right main body 204a. The guide part 272 is fixed to the base part 270. The guide part 272 includes a guide hole 272a through which the wire W is inserted.
The driving roller 274 is rotatably supported by the base part 270. Teeth 274a and a groove 274b are arranged on an outer circumferential surface of the driving roller 274. The teeth 274a mesh with an output gear 258a of the reduction gear unit 258. The output gear 258a is configured to rotate by the rotation of the feeding motor 256. The groove 274b is defined on the outer circumferential surface of the driving roller 274 along a direction of rotation of the driving roller 274. The driven roller 276 is rotatably supported by the link part 278. Teeth 276a and a groove 276b are arranged on an outer circumferential surface of the driven roller 276. The teeth 276a of the driven roller 276 mesh with the teeth 274a of the driving roller 274. The groove 276b extends along a direction of rotation of the driven roller 276 on the outer circumferential surface of the driven roller 276.
The link part 278 is pivotably supported by the base part 270 via a pivot shaft 278a. One end of the biasing part 280 is in contact with a lower portion of the link part 278 and another end of the biasing part 280 is in contact with the right main body 204a. The biasing part 280 is configured to bias the link part 278 with respect to the right main body 204a in a direction along which the driven roller 276 approaches toward the driving roller 274. Due to this, the driven roller 276 is pressed against the driving roller 274. As a result, the wire W is held between the groove 274b of the driving roller 274 and the groove 276b of the driven roller 276. As shown in
As shown in
As shown in
The coupler 288 couples the lever 286 and the cam part 290. The coupler 288 is integrated with the cam part 290. The coupler 288 is fixed to the lever 286 by a screw 294. The coupler 288 penetrates the left surface of the left main body 204b.
The cam part 290 is disposed inside the main body 204. The cam part 290 is configured to pivot integrally with the lever 286. The cam part 290 comprises an edge 296. A left surface 296a of the edge 296 is parallel to a plane that perpendicularly intersects the pivot axis RX1. Further, the left surface 296a of the edge 296 faces an inner surface of the left main body 204b. A recess 292 is defined on the left surface 296a of the edge 296. The recess 292 is recessed rightward from the left surface 296a of the edge 296. A position of the recess 292 is fixed with respect to the cam part 290. As shown in
As shown in
The coupler 288 extends through inside a third biasing member 304. The third biasing member 304 may for example be a compression spring. The third biasing member 304 is inserted in the fixing member 300 so as to surround the coupler 288. One end of the third biasing member 304 is in contact with the left surface 296a of the cam part 290 and another end of the third biasing member 304 is in contact with the inner surface of the left main body 204b. The third biasing member 304 is configured to bias the cam part 290 rightward with respect to the left main body 204b. Due to this, the lever 286 is pressed against the outer surfaces of the left main body 204b and the cover member 224. As a result, wobbling of the operating part 284 is suppressed.
As shown in
As shown in
As shown in
The reduction gear unit 324 shown in
As shown in
The bearing box 334 is fixed to the reduction gear unit 324. The bearing box 334 rotatably supports the carrier sleeve 336 via a bearing 334a. Rotation is transmitted from the reduction gear unit 324 to the carrier sleeve 336. When the twisting motor 322 rotates forward, the carrier sleeve 336 rotates in a left-hand screw direction as seen from behind. When the twisting motor 322 rotates in reverse, the carrier sleeve 336 rotates in a right-hand screw direction as seen from behind.
As shown in
A rear part 340a of the screw shaft 340 is inserted into the carrier sleeve 336 from the front side, and is fixed to the clutch plate 338. A flange 340c projecting in a radial direction is arranged between the rear part 340a and a front part 340b of the screw shaft 340. A spiral ball groove 340d is defined in an outer circumferential surface of the front part 340b of the screw shaft 340. An engaging part 340e with a smaller diameter than the front part 340b is arranged at a front end of the screw shaft 340.
As shown in
The clamp shaft 346 is inserted into the inner sleeve 342 from the front side. The engaging part 340e of the screw shaft 340 is inserted in a rear end of the clamp shaft 346. The clamp shaft 346 is fixed to the screw shaft 340. As shown in
As shown in
As shown in
As shown in
As shown in
As shown in
As shown in
In the initial state where the clamp shaft 346 protrudes frontward from the outer sleeve 344, the left clamp 350 is positioned at farthest left with respect to the clamp shaft 346. In this state, a left wire passage 424 through which the wire W can extend is secured between the first projection 400 of the left clamp 350 and the flat plate part 370 of the clamp shaft 346. This state of the left clamp 350 is termed a fully opened state. From this state, when the outer sleeve 344 moves forward with respect to the clamp shaft 346, the left clamp 350 moves rightward with respect to the clamp shaft 346. In this state as well, the wire W can extend through the left wire passage 424, however, a rear portion of the left wire passage 424 is covered by the rear guard 404 and a front portion of the left wire passage 424 is covered by the front guard 406. This state of the left clamp 350 is termed a half-opened state. From this state, when the outer sleeve 344 further moves forward with respect to the clamp shaft 346, the left clamp 350 further moves rightward with respect to the clamp shaft 346. In this state, the wire W is held between an upper end of the contacting part 402 of the left clamp 350 and a lower end of the flat plate part 370 of the clamp shaft 346. This state of the left clamp is termed a fully closed state.
The wire W fed from the feeding part 260 to the guiding part 262 passes through the left wire passage 424 before it reaches the guiding part 262. Due to this, when the left clamp 350 enters the fully closed state and the wire W is cut by the cutter unit 252, a trailing end of the wire W wrapped around the rebars R is retained by the left clamp 350 and the clamp shaft 346.
Further, the wire W guided in the guiding part 262 passes through the right wire passage 422. Due to this, when the right clamp 348 enters the fully closed state, a tip end of the wire W wrapped around the rebars R is retained by the right clamp 348 and the clamp shaft 346.
As shown in
As shown in
When the twisting motor 322 rotates forward with respect to the upper stopper 438 and the screw shaft 340 rotates in the left-hand screw direction as seen from behind, the rotation of the outer sleeve 344 is prohibited by the upper stopper 438 when the fins 428 of the outer sleeve 344 come into contact with the restriction piece 450. On the other hand, when the twisting motor 322 rotates in reverse and the screw shaft 340 rotates in the right-hand screw direction as seen from behind, the fins 428 of the outer sleeve 344 pushes in the restriction piece 450 even after they come into contact with the restriction piece 450. In this case, the upper stopper 438 does not prohibit the rotation of the outer sleeve 344.
When the twisting motor 322 rotates forward with respect to the lower stopper 440 and the screw shaft 340 rotates in the left-hand screw direction as seen from behind, the fins 428 of the outer sleeve 344 push in the restriction piece 452 even after they come into contact with the restriction piece 452. In this case, the lower stopper 440 does not prohibit the rotation of the outer sleeve 344. On the other hand, when the screw shaft 340 rotates in the right-hand screw direction as seen from behind, the rotation of the outer sleeve 344 is prohibited by the lower stopper 440 when the fins 428 of the outer sleeve 344 come into contact with the restriction piece 452.
As shown in
The contacting member 458 is disposed close to the front end of the main body 204. The contacting member 458 is disposed frontward than the twisting unit 254. The contacting member 458 comprises a first contacting part 462 and a second contacting part 464. The first contacting part 462 and the second contacting part 464 are disposed apart along the left-right direction. The first contacting part 462 and the second contacting part 464 are disposed separately. A shape of the first contacting part 462 is in a symmetric relationship with a shape of the second contacting part 464 with respect to a plane perpendicularly intersecting the left-right direction. The first contacting part 462 and the second contacting part 464 are supported by the base members 478, 480 so as to be pivotable about pivot axes 466, 468 (see
The push rod 482 comprises front push rods 492, 496, rear push rods 494, 498, rod guides 500, 502, first compression springs 504, 506, and second compression springs 508, 510. The rod guides 500, 502 are fixed to the base members 478, 480. The front push rods 492, 496 are inserted into the rod guides 500, 502 from behind, and protrude frontward than front ends of the rod guides 500, 502. A front end of the front push rod 492 is disposed behind the first contacting part 462 and facing a rear surface of the first contacting part 462. A front end of the front push rod 496 is disposed behind the second contacting part 464 and facing a rear surface of the second contacting part 464. The front push rods 492, 496 are configured to move in the front-rear direction with respect to the main body 204 by being guided by the rod guides 500, 502. The rear push rods 494, 498 are inserted into the rod guides 500, 502 from behind. The rear push rod 494 is disposed behind the front push rod 492 and facing the front push rod 492, and the rear push rod 498 is disposed behind the front push rod 496 and facing the front push rod 496. The rear push rods 494, 498 are configured to move in the front-rear direction with respect to the main body 204 by being guided by the rod guides 500, 502. The first compression springs 504, 506 and the second compression springs 508, 510 are accommodated inside the rod guides 500, 502. The first compression springs 504, 506 couple the front push rods 492, 496 with the rear push rods 494, 498. The first compression springs 504, 506 cause an elastic restoration force to be applied when intervals between the front push rods 492, 496 and the rear push rods 494, 498 are decreased. The second compression springs 508, 510 bias the front push rods 492, 496 rearward with respect to the rod guides 500, 502. Spring stiffness of the second compression springs 508, 510 is smaller than spring stiffness of the first compression springs 504, 506. As shown in
As shown in
As shown in
When the push plate 476 moves frontward with respect to the main body 204, the rear ends of the rear push rods 494, 498 shown in
As shown in
The magnetic sensors 474a, 474b and the controller 220 are electrically connected by seventh connecting cables 475 (see
Next, the tying operation of the rebar tying tool 202 will be described. The rebar tying tool 202 is configured to perform the tying operation when the trigger 212 is operated by the operator. Upon when the rebar tying tool 202 performs the tying operation, a feed-out process, a tip end retaining process, a pullback process, a trailing end retaining process, a cutting process, a tensioning process, a twisting process, and a returning process are executed.
(Feed-Out Process)
From the initial state of the rebar tying tool 202, when the feeding motor 256 shown in
(Tip End Retaining Process)
After completion of the feed-out process, when the twisting motor 322 shown in FIG. 20 rotates forward, the screw shaft 340 rotates in the left-hand screw direction. At this occasion, the outer sleeve 344 is prohibited from rotating in the left-hand screw direction by the rotation restrictor 328. Due to this, the outer sleeve 344 moves forward with respect to the main body 204 and the clamp shaft 346 together with the inner sleeve 342. Due to this, the right clamp 348 enters the fully closed state and the left clamp 350 enters the half-opened state. As a result, the tip end of the wire W is retained by the right clamp 348 and the clamp shaft 346. After this, the twisting motor 322 stops.
(Pullback Process)
After completion of the tip end retaining process, when the feeding motor 256 shown in
(Trailing End Retaining Process)
After completion of the pullback process, when the twisting motor 322 shown in
(Cutting Process)
After completion of the trailing end retaining process, when the twisting motor 322 shown in
(Tensioning Process)
After completion of the cutting process, when the twisting motor 322 shown in
(Twisting Process)
After completion of the tensioning process, when the twisting motor 322 shown in
(Returning Process)
After completion of the twisting process, when the twisting motor 322 shown in
(Effects)
In the present embodiment, the rebar tying tool 202 further comprises the main body 204. As shown in
Further, the lever 286 is configured to slide along the outer surface of the main body 204, and is configured to keep the cover member 224 in the prohibiting state. The third biasing member 304 biases the cam part 290 with respect to the main body 204 toward inside the main body 204. In the above configuration, since the cam part 290 is biased toward inside the main body 204 by the biasing force of the third biasing member 304 being applied to the cam part 290, the lever 286 is thereby pressed against the outer surface of the main body 204. In this case, foreign matters can be suppressed from being caught between the lever 286 and the outer surface of the main body 204. Due to this, sliding performance of the operating part 284 can be suppressed from decreasing while at the same time the wobbling of the operating part 284 can be suppressed.
Further, the third biasing member 304 includes the compression spring. The coupler 288 passes inside the third biasing member 304. In the above configuration, the space inside the main body 204 required to dispose the cam part 290, the coupler 288, and the third biasing member 304 can be reduced.
Further, the rebar tying tool 202 further comprises the protrusion 302 and the recess 292 both disposed inside the main body 204 and configured to engage with each other. The position of the recess 292 is fixed with respect to the cam part 290. The position of the protrusion 302 is fixed with respect to the main body 204. In the above configuration, the protrusion 302 and the recess 292 are disposed inside the main body 204. As compared to the case in which the protrusion 302 and the recess 292 are disposed outside the main body 204, objects such as the rebars R can be suppressed from colliding with the protrusion 302 and the recess 292, and the protrusion 302 and the recess 292 can be suppressed from being damaged. Due to this, engagement defect between the protrusion 302 and the recess 292 can be suppressed from occurring.
(Corresponding Relationship)
The cover member 224 is an example of “stopper”.
Specific examples of the present invention has been described in detail, however, these are mere exemplary indications and thus do not limit the scope of the claims. The art described in the claims include modifications and variations of the specific examples presented above.
In an aspect, the teeth 62a may not be disposed on the outer circumferential surface of the driving roller 62 and the teeth 64a may not be disposed on the outer circumferential surface of the driven roller 64. In this case, the driven roller 64 may rotate following the driving roller 62 by the outer circumferential surface of the teeth 62a and the outer circumferential surface of the driven roller 64 being in contact.
The cover 20 according to an aspect may include a groove that is depressed inward in the outer surface of the cover 20 instead of the engaging part 92. In this case, the cover 20 may be kept in the prohibiting state by a distal end of the lever part 84 engaging with the groove of the cover 20.
The operating part 82 according to an aspect may be configured to slide in the up-down direction and/or the front-rear direction.
The pivoting part 22 according to an aspect may be disposed in the front, rear, or upper part of the cover 20.
As another example of the stopper, the accommodating part 16 according to an aspect may not comprise the shaft 18b. In this case, the cover 20 may comprise a shaft to which the reel 26 can be attached.
As another example of the stopper, the accommodating part 16 according to an aspect may comprise a rivet part instead of the cover 20. The rivet part may include a first portion and a second portion. A diameter of the first portion may be greater than a diameter of the shaft 18b of the holder 18 and smaller than a diameter of the bearing hole 27a of the core 27 of the reel 26. A diameter of the second portion may be greater than the diameter of the shaft 18b and the diameter of the bearing hole 27a. The first portion is configured to be inserted into the bearing hole 27a while the second portion is configured not to be inserted in the bearing hole 27a. The first portion may be inserted into the bearing hole 27a of the core 27 of the reel 26 inserted onto the shaft 18b and the second portion may be brought into contact with the core 27, by which the reel 26 can be suppressed from detaching from the shaft 18b.
The accommodating part 16 according to an aspect may be disposed at a rear part of the main body 4. In this case, the accommodating part 16, the feeding part 52, and the guiding part 54 may be disposed in this order from rear to front. Further, the feeding motor 48 and the reduction gear unit 50 may be disposed above, below, on the right side of, or below the driving roller 62 of the feeding part 52. Further, the operating part 82 may be disposed more on the front side than the reel 26 held in the accommodating part 16 is and more on the rear side than the driven roller 64 of the feeding part 52 is.
The protrusion 302 according to an aspect may be disposed on the cam part 290. In this case, the recess 292 may be defined in the fixing member 300.
Technical features described in the description and the drawings may technically be useful alone or in various combinations, and are not limited to the combinations as originally claimed. Further, the art described in the description and the drawings may concurrently achieve a plurality of aims, and technical significance thereof resides in achieving any one of such aims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2019-188024 | Oct 2019 | JP | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/JP2020/031175 | 8/18/2020 | WO |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2021/070481 | 4/15/2021 | WO | A |
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| 101585422 | Nov 2009 | CN |
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| 105314150 | Feb 2016 | CN |
| 107031891 | Aug 2017 | CN |
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| Entry |
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| Mar. 6, 2023 Office Action issued in Chinese Patent Application No. 202080071192.9. |
| Jan. 31, 2023 Office Action Issued in Japanese Patent Application No. 2021-550413. |
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| Number | Date | Country | |
|---|---|---|---|
| 20220325543 A1 | Oct 2022 | US |
