Patent Grant
12134905
This application is based upon and claims the benefit of priority from prior Japanese patent application No. 2021-021732, filed on Feb. 15, 2021, the entire contents of which are incorporated herein by reference.
The present disclosure relates to a binding machine.
In the related art, used is a binding machine configured to perform a binding operation by inserting a reinforcing bar, which is a binding object, inside a pair of guide parts provided on a tip end-side of a binding machine body, curling a wire and winding the wire around the reinforcing bar by the pair of guide parts and twisting the same.
Here, in order to reliably perform the binding operation, it is necessary to securely insert the reinforcing bar, which is a binding object, into an opening inside the pair of guide parts. In particular, in a binding machine where the binding machine body and a handle part are connected by an elongated connecting part, a structure capable of reliably inserting the reinforcing bar inside the pair of guide parts is required because the guide parts are apart from a viewpoint of an operator.
A related art disclosed in Patent Literature 1 has been suggested to address such an issue. For example, disclosed is a binding machine having an induction part having an inclined surface provided on a tip end-side of a first guide of a guide part and capable of easily inserting a reinforcing bar into an insertion/pulling-out opening between the first guide and a second guide.
However, in the binding machine of the related art disclosed in Patent Reference 1 and the like, in a case of performing an operation at a site where a gap between the reinforcing bar that is a binding object and the ground is narrow, when inserting the reinforcing bar into an opening inside the pair of guide parts, there occurs a problem that the tip end-side of the guide part comes into contact with the ground, and therefore, the reinforcing bar cannot be inserted at a predetermined position in the opening between the pair of guide parts.
Therefore, the present invention has been made to solve the above-described problem, and an object thereof is to provide a binding machine capable of inserting a reinforcing bar into an opening between a pair of guide parts even at a site where a gap between a binding object such as a reinforcing bar and the ground is narrow.
In order to solve the above-described problem, the present disclosure includes a feeding unit configured to feed a wire, a guide part configured to wind the wire fed by the feeding unit around a binding object, a twisting unit configured to twist the wire wound on the binding object by the guide part, and a contact part against which the binding object is butted, in which the guide part includes a first guide configured to curl the wire around the binding object butted against the contact part, a second guide configured to guide the wire curled by the first guide to the twisting unit, and an induction part provided to at least one of the first guide and the second guide, and configured to guide the binding object between the first guide and the second guide, and in which the induction part is configured so that a distance between the induction part and the contact part is variable.
According to the present disclosure, since the induction part is configured so that the distance between the induction part and the contact part is variable, the binding object can be inserted between the pair of guide parts even when a space between the binding object and the ground is narrow.
Hereinafter, favorable embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
(Configuration Example of Reinforcing Bar Binding Machine 1A)
The reinforcing bar binding machine 1A is used in a state where an operator is standing with a guide part 5 facing downward so as to bind a reinforcing bar S at the feet of the operator. As shown in
As shown in
The reinforcing bar binding machine 1A is provided with the guide part 5 on one side of the second body part 302. As for the reinforcing bar binding machine 1A, the first body part 301 and the second body part 302 are connected by the connecting part 303, so that the guide part 5 and the handle parts 304hL and 304hR are further extended therebetween, as compared to a reinforcing bar binding machine to which the connecting part 303 is not provided. In the present embodiment, a side on which the guide part 5 is provided is defined as a front.
As shown in
The cutting unit 6 is provided downstream of the feeding unit 3 with respect to feeding of the wire W in the forward direction indicated by the arrow F. The cutting unit 6 includes a fixed blade part 60 and a movable blade part 61 configured to cut the wire W in cooperation with the fixed blade part 60. In addition, the cutting unit 6 includes a transmission mechanism 62 configured to transmit movement of the drive unit 8 to the movable blade part 61.
The fixed blade part 60 has an opening 60a through which the wire W passes. The movable blade part 61 is configured to cut the wire W passing through the opening 60a of the fixed blade part 60 by a rotating operation about the fixed blade part 60 as a fulcrum.
In addition, as shown in
The first guide 51 is attached to an end portion on a front side of the second body part 302 and extends in a first direction, which is a front and rear direction indicated by an arrow A1. When a side of the first guide 51 attached to the second body part 302 is referred to a base end-side and a side extending forward from the second body part 302 is referred to as a tip end-side, the base end-side is attached to the second body part 302 by a screw or the like. Further, the first guide 51 has a groove portion 51h having a guide surface 51g with which the wire W fed by the feeding unit 3 is to come into sliding contact.
The first guide 51 has a regulation part 40. The regulating part 40 has a first regulation member constituted by the fixed blade part 60 described above. In addition, the regulating part 40 has a regulation member 42 provided downstream of the fixed blade part 60 and a regulation member 43 provided downstream of the regulation member 42 with respect to the feeding of the wire W in the forward direction indicated by the arrow F. The regulation member 42 and the regulation member 43 are constituted by columnar members, and the wire W comes into contact with outer peripheral surfaces thereof. Thereby, the wire W fed by the feeding unit 3 passes while being in contact with the fixed blade part 60, the regulation member 42, and the regulation member 43, so that the wire W is curled.
The regulation part 40 includes a transmission mechanism 44 configured to transmit movement of the drive unit 8 to the regulation member 42. The regulation member 42 is located at a position where the wire W comes into contact with the same when feeding the wire W in the forward direction by the feeding unit 3 to curl the wire W, and is configured to be movable to a position where it is not in contact with the wire W by an operation of feeding the wire W in the reverse direction to wind the wire W on the reinforcing bar S.
The second guide 52 is attached to an end portion on the front side of the second body part 302. The second guide 52 is provided to face the first guide 51 in a second direction indicated by an arrow A2, which is an upper and lower direction orthogonal to the first direction. A predetermined space is provided between the first guide 51 and the second guide 52 along the second direction, and an insertion/pulling-out opening 53 to and from which the reinforcing bar S is inserted and pulled out is formed between the first guide 51 and the second guide 52.
The second guide 52 is configured to be rotatable with respect to the second body part 302 with a shaft 52b as a fulcrum. The second guide 52 is configured to be movable in directions toward and away from the first guide 51 in the second direction indicated by the arrow A2.
The second guide 52 is configured to be movable between an open position opening with respect to the first guide 51 and a closed position closer to the first guide 51 than the open position by rotation with the shaft 52b as a fulcrum, in conjunction with a pair of contact members 9L and 9R. When the second guide 52 is at the open position, a space between the first guide 51 and the second guide 52 is widened, so that it becomes easier to insert the reinforcing bar into the insertion/pulling-out opening 53. The second guide 52 is urged by an urging member 54 constituted by a torsion coil spring or the like in a direction of moving to the open position, and a state of being moved to the open position is maintained.
As shown in
As shown in
The drive unit 8 is configured to move the actuating part 71 along an axial direction of the rotary shaft 82 by a rotating operation of the rotary shaft 82. As the actuating part 71 moves along the axial direction of the rotary shaft 82, the engaging part 70 holds a tip end-side of the wire W guided to the twisting unit 7 by the guide part 5.
In the drive unit 8, the moving member 83 is configured to move along the axial direction of the rotary shaft 82 in conjunction with an operation of the actuating part 71 moving along the axial direction of the rotary shaft 82, so that movement of the moving member 83 is transmitted to the regulation member 42 by the transmission mechanism 44 and the regulation member 42 moves to a position where it is not in contact with the wire. In addition, when the actuating part 71 moves along the axial direction of the rotary shaft 82, the movement of the moving member 83 is transmitted to the movable blade part 61 by the transmission mechanism 62, so that the movable blade part 61 is actuated to cut the wire W.
The drive unit 8 is configured to rotate the actuating part 71, which has been moved along the axial direction of the rotary shaft 82, by the rotating operation of the rotary shaft 82. The actuating part 71 is configured to rotate around an axis of the rotary shaft 82, thereby twisting the wire W with the engaging part 70.
Further, the reinforcing bar binding machine 1A includes contact members 9L and 9R, a link member 96, and a contact part 11.
As shown in
The link member 96 is configured to transmit movement of the contact members 9L and 9R to the second guide 52. When the contact members 9L and 9R are moved to the actuating position, the link member 96 rotates about a shaft 97 as a fulcrum to move the second guide 52 to the closed position where an opening width of the insertion/pulling-out opening 53 is narrowed.
The contact part 11 is attached from an end portion on the front side of the second body part 302 to both left and right sides of the second body part 302, and is configured to cover the end portion on the front side of the second body part 302. When the contact members 9L and 9R pushed by the reinforcing bar S inserted into the insertion/pulling-out opening 53 are moved to the actuating position, the reinforcing bar S or the like is butted against the contact part 11. The contact part 11 is constituted by a metal plate or the like, and has a shape to cover a portion or all of the end portion on the front side of the second body part 302 and portions of both the left and right sides on the front side of the second body part 302, between the base end-side of the first guide 51 and the base end-side of the second guide 52. While the second body part 302 is made of resin, the contact part 11 is made of metal, so that even when the contact members 9L, 9R and the reinforcing bar S are butted against the contact part 11, the wear of the contact part 11 can be reduced.
(Configuration Example of Induction Part 600)
Next, an example of a configuration of the induction part 600 according to the first embodiment is described.
As shown in
Further, the induction part 600 is configured to rotate as the tip end portion 600a presses against the ground G and to vary an amount of protrusion with respect to the first guide 51 when performing an operation at a site where a space between the ground G, which is an obstacle, and the reinforcing bar S is narrow. That is, the induction part 600 is configured so that a distance between the induction part and the contact part 11 of the second body part 302 can be varied according to the space between the reinforcing bar S, which is a binding object, and the ground G.
Specifically, as shown in
As shown in
The induction part 600 is formed with a long hole 610 for movably guiding the same between the first position P1 and the second position P2. The long hole 610 is formed in a substantial arc shape, and is configured to regulate a moving range of the induction part 600 between the first position P1 and the second position P2.
A pin 630 is inserted into the long hole 610 of the induction part 600, a hole 500 of the guide cover 51b, and a hole 502 of the guide arm 51a, from one side toward the other side. A stopper 632 for preventing the pin 630 from coming off in the axial direction is attached to the other end portion of the pin 630. Further, a pin 640 for supporting a torsion coil spring 650, which will be described later, is attached between the plates of the guide cover 51b.
A pin 620 is inserted into a hole 660 of the induction part 600 and a hole 504 of the guide cover 51b, from one side toward the other side. A stopper 622 for preventing the pin 620 from coming off in the axial direction is attached to the other end portion of the pin 620. The induction part 600 is configured to rotate along the long hole 610 with respect to the guide cover 51b (first guide 51) about the pin 620 as a fulcrum. The tip end portion 600a is provided on the insertion/pulling-out opening 53-side with respect to the pin 620 that is a fulcrum of rotation.
A torsion coil spring 650 is provided between the plates of the guide cover 51b. The pin 620 is inserted into a central axis of the torsion coil spring 650, a fixed point of the torsion coil spring 650 is attached to the pin 640, and a load point of the torsion coil spring 650 is in contact with an acting portion 602 provided on an opposite side of the induction surface 600b. The induction part 600 is urged by the torsion coil spring 650 in a direction of an arrow A3 in a clockwise direction (refer to
(Operation Example of Reinforcing Bar Binding Machine 1A)
Next, an operation of binding the reinforcing bar S with the wire W by the reinforcing bar binding machine 1A is described.
An operator grips the handle part 304hR and the handle part 304hL, takes a standing posture, and for example, aligns the guide part 5 at an intersection place of the two reinforcing bars S. Subsequently, as shown in
By the pressing operation, as shown in
As shown in
When the second guide 52 moves to the closed position, the feeding motor rotates in the forward direction and the feeding gears 30 rotate in the forward direction, so that the wire W is fed in the forward direction indicated by the arrow F. The wire W that is fed in the forward direction by the feeding unit 3 is bent in an arc shape by coming into contact with the fixed blade part 60, the regulation member 42, the regulation member 43 and the guide surface 51g of the first guide 51, so that a curl drawing a substantial circle is formed.
The wire W curled by the regulation part 40 of the first guide 51 is guided to the second guide 52 and the engaging part 70 of the twisting unit 7. When the tip end portion of the wire W is fed to a predetermined position, the feeding motor (not shown) is stopped, and the wire W is in a state of being wound around the reinforcing bars S.
After the feeding motor is stopped, the twisting motor 80 rotates in the forward direction, and the tip end-side of the wire W is held by the engaging part 70 as the actuating part 71 operates. When the wire W is held by the engaging part 70, the twisting motor 80 is stopped and the feeding motor is rotated in the reverse direction. When the feeding motor rotates in the reverse direction, the feeding gears 30 rotate in the reverse direction and the wire W is fed in the reverse direction indicated by the arrow R. Thereby, the wire W is wound to be in close contact with the reinforcing bars S.
When the wire W is wound on the reinforcing bars S, the rotation of the feeding motor is stopped, and the twisting motor 80 rotates in the forward direction. Along with this, the moving member 83 actuates the movable blade part 61 via the transmission mechanism 62, so that the wire W is cut.
After the wire W is cut, the twisting motor 80 continues to rotate in the forward direction, so that the engaging part 70 rotates and the wire W is twisted. When the wire W is bound, the twisting motor 80 is rotated in the reverse direction. Thereby, the engaging part 70 returns to an initial position, and the holding of the wire W is released. By the series of operations, the binding operation is executed.
When the binding operation is completed, the operator moves the reinforcing bar binding machine 1A in a direction of pulling out the reinforcing bars S from the insertion/pulling-out opening 53 (a direction away from the ground G). Along with this, the tip end portion 600a of the induction part 600 comes off from the ground G, so that, as shown in
According to the first embodiment, when performing the operation at a site where the space between the reinforcing bars S and the ground G is narrow, the induction part 600 is rotated by the operation of pressing the induction part 600 against the ground G. Therefore, the amount of protrusion of the induction part 600 from the tip end-side of the first guide 51 can be reduced. Thereby, the reinforcing bars S can be reliably inserted into the insertion/pulling-out opening 53 between the first guide 51 and the second guide 52, and the contact members 9L and 9R are pressed by the reinforcing bars S to securely start the binding operation.
Further, in the related art, in the case of the site where the space between the reinforcing bars S and the ground G is narrow, it was necessary to perform a replacement operation of detaching the induction part 600 from the first guide 51 so as to shorten a length of the entire guide part 5 in the direction of the axis line Ax. In contrast, according to the first embodiment, since the length of the induction part 600 with respect to the contact part 11 in the direction of the axis line Ax can be varied, the operation of replacing the induction part 600 is not necessary, so that an operation load can be reduced. In addition, it is possible to avoid the loss of components during the replacement operation of the induction part 600. Further, since a mechanism premised on replacement is not required, the induction part 600 can be firmly attached to the first guide 51.
Note that, in the above-described embodiment, when performing the operation at the site where the space between the reinforcing bars S and the ground G is narrow, the induction part 600 is pressed against the ground G, which is an obstacle, and the tip end portion 600a of the induction part 600 is moved from the first position P1 to the second position P2. However, at an operation site where it is not recommended to bring the induction part 600 into contact with the ground G, the operator may manually rotate the induction part 600.
For example, at an operation site where a sheet, a tape or the like for curing (hereinafter, referred to as a curing sheet or the like) is laid on concrete (ground G), when the tip end portion 600a of the induction part 600 is brought into contact with the curing sheet or the like, the curing sheet or the like may be damaged. For this reason, at the operation site where the curing sheet or the like is laid, it is necessary to perform the binding operation without bringing the induction part 600 into contact with the ground G.
When the space between the reinforcing bars S and the ground G is narrow and a curing sheet or the like is laid on the ground G such as concrete, as shown in
Further, in the above description, the reference of the distance when the induction part 600 is varied is the contact part 11. However, for example, the drive unit 8 may be used as a reference, or the twisting motor 80 may be used as a reference. As shown in
Specifically, in a case of performing an operation at a site where the space between the reinforcing bars S and the ground G is wide, as shown in
Further, as the reference of the distance when the induction part 600 is varied, the handle parts 304hL and 304hR, which are a grip part, may be used instead of the above-described contact part 11 or the like. As shown in
Specifically, in a case of performing an operation at a site where the space between the reinforcing bars S and the ground G is wide, as shown in
Further, as the reference of the distance when the induction part 600 is varied, a tip end portion 51a1 of the guide arm 51a, which is a first guide, may be used instead of the above-described contact part 11 or the like. As shown in
Specifically, in a case of performing an operation at a site where the space between the reinforcing bars S and the ground G is wide, as shown in
An induction part 700 of a reinforcing bar binding machine 1B according to a second embodiment is different from the induction part 600 of the reinforcing bar binding machine 1A according to the first embodiment, in that the induction part 700 is configured to be movable substantially parallel to the axis line Ax. In the second embodiment, as for the configuration and operation common to the first embodiment, the overlapping descriptions are omitted by quoting the descriptions of the first embodiment.
(Configuration Example of Induction Part 700)
As shown in
Further, the induction part 700 is configured to slide substantially parallel to the axis line Ax as the tip end portion 700a presses against the ground G and to vary an amount of protrusion with respect to the first guide 51 when performing an operation at a site where a space between the ground G, which is an obstacle, and the reinforcing bar S is narrow. That is, the induction part 700 is configured so that a distance between the induction part and the contact part 11 of the second body part 302 can be varied according to the space between the reinforcing bar S, which is a binding object, and the ground G.
Specifically, in a case of performing an operation at a site where the space between the reinforcing bar S and the ground G is wide, as shown in
As shown in
The guide covers 51b and 51b are each formed with a first long hole 522 and a second long hole 520 for movably supporting the induction part 700 between the first position P1 and the second position P2, respectively. The first long hole 522 and the second long hole 520 are formed substantially parallel to the axis line Ax and aligned side by side in the front and rear direction, and are configured to regulate the moving range of the guide part 700 between the first position P1 and the second position P2.
A pin 720 is inserted into a hole 740 of the induction part 700 and the second long holes 520 of the guide covers 51b and 51b, from one side toward the other side. Stoppers 722 and 723 for preventing the pin 720 from coming off in the axial direction are attached to each of both end portions of the pin 720.
A pin 710 is inserted into the first long holes 522 of the guide covers 51b and 51b, from one side toward the other side. A portion of the pin 710 exposed outward from the guide cover 51b is engaged (fitted) with a concave portion 742 of the induction part 700. Stoppers 712 and 713 for preventing the pin 710 from coming off in the axial direction are attached to each of both end portions of the pin 710 inserted into the first long holes 522.
A tension spring 730 is provided between the guide covers 51b and 51b. One end portion of the tension spring 730 is attached to the pin 710 and the other end portion of the tension spring 730 is attached to the pin 530. Thereby, as shown in
(Operation Example of Induction Part 700)
Next, an example of an operation of the induction part 700 according to the second embodiment is described. Note that, in a usual state, as shown in
In a case where the space between the ground G and the reinforcing bar S is narrow and the binding operation is performed, the induction part 700 is slid from the position P1 to the second position P2 so as to reduce the amount of protrusion of the induction part 700 from the tip end-side of the first guide 51 in the direction of the axis line Ax. Specifically, the operator aligns the guide part 5 at an intersection place of the two reinforcing bars S, for example, and presses the tip end portion 700a of the induction part 700 against the ground G by an operation of moving the reinforcing bar binding machine 1B in a direction of inserting the reinforcing bars S into the insertion/pulling-out opening 53.
By the pressing operation, as shown in
On the other hand, when the reinforcing bar binding machine 1B is lifted away from the ground G by the end of the binding operation of the reinforcing bars S and the tip end portion 700a is spaced apart from the ground G, the tension spring 730 is compressed and returns to an original state, and the pin 710 is urged in the direction of the arrow B1 (refer to
According to the second embodiment, the substantially similar effects to those of the first embodiment can be obtained. Specifically, when performing the operation at a site where the space between the reinforcing bars S and the ground G is narrow, the induction part 700 is slid by the operation of pressing the induction part 700 against the ground G. Therefore, the amount of protrusion of the induction part 700 from the tip end-side of the first guide 51 can be reduced. Thereby, the reinforcing bars S can be reliably inserted into the insertion/pulling-out opening 53 between the first guide 51 and the second guide 52, and the contact members 9L and 9R can be pressed by the reinforcing bars S.
Note that, in the second embodiment, the reference of the distance when the induction part 700 is varied is the contact part 11. However, the present invention is not limited thereto, and as described in the first embodiment, the drive unit 8, the handle parts 304hL and 304hR, which are a grip part, or the tip end portion 51a1 of the guide arm 51a may be used as a reference.
An induction part 800 of a reinforcing bar binding machine 1C according to a third embodiment is different from the induction part 600 of the reinforcing bar binding machine 1A according to the first embodiment, and the like, in that the induction part 800 is configured to be manually rotatable with respect to a shaft (pin 860) provided in a direction orthogonal to the axis line Ax. Note that, in the third embodiment, as for the configuration and operation common to the first embodiment, the overlapping descriptions are omitted by quoting the descriptions of the first embodiment.
(Configuration Example of Induction Part 800)
As shown in
Further, the induction part 800 is configured to be able to vary an amount of protrusion with respect to the first guide 51 by the operator manually rotating the induction part 800 about a shaft (pin 860) orthogonal to the axis line Ax as a fulcrum, when performing an operation at a site where the space between the ground G, which is an obstacle, and the reinforcing bar S is narrow. That is, the induction part 800 is configured so that a distance between the induction part and the contact part 11 of the second body part 302 can be varied according to the space between the reinforcing bar S, which is a binding object, and the ground G.
Specifically, in a case of performing an operation at a site where the space between the reinforcing bar S and the ground G is wide, as shown in
As shown in
The induction part 800 has a first engaging portion 810 that can be engaged with a pin 850 (engaged portion), which will be described later, when the induction part 800 is at the first position P1, and a second engaging portion 820 that can be engaged with the pin 850 when the induction part 800 is at the second position P2. The first engaging portion 810 and the second engaging portion 820 are formed by, for example, concave portions, and are each formed at an end edge portion of the induction part 800.
The guide cover 51b is formed with a long hole 540 for moving the induction part 800 to a position where an engaged state of the first engaging portion 810 and the second engaging portion 820 can be released. The long hole 540 is constituted by a first hole 540a having a size into which a head portion (engaged portion) 850b of the pin 850 can be inserted, and a second hole 540b for movably supporting a shaft portion 850a of the pin 850.
A pin 880 is inserted into a hole 544 of the guide cover 51b, from one side toward the other side. A portion of the pin 880 exposed inward from the guide cover 51b is engaged (fitted) with a concave portion 542 of the guide arm 51a.
A pin 860 is inserted into a hole 830 of the induction part 800 and a hole 546 of the guide cover 51b, from one side toward the other side. A stopper 862 for preventing the pin 860 from coming off in the axial direction is attached to the other end portion of the pin 860. Thereby, the induction part 800 is adapted to be rotatable with respect to the guide cover 51b with the pin 860 as a fulcrum.
The pin 850 is inserted into the long hole 540 of the guide cover 51b, from one side toward the other side. The shaft portion 850a of the pin 850 is supported to be movable along the long hole 540. The head portion 850b of the pin 850 is attached to the guide cover 51b so as to be exposed from the left and right side surfaces of the guide cover 51b so that the operator can grip the same.
A tension spring 870 is provided between the plates of the guide cover 51b. One end portion of the tension spring 870 is attached to the pin 860 and the other end portion of the tension spring 870 is attached to the pin 850. Thereby, the pin 850 is urged by the elastic force of the tension spring 870 toward the first engaging portion 810 and the second engaging portion 820 of the induction part 800, so that the engaged state of the first engaging portion 810 and the like of the induction part 800 by the pin 850 is maintained.
(Operation Example of Induction Part 800)
Next, an example of an operation of the induction part 800 according to the third embodiment is described. Note that, in a usual state, as shown in
In a case where the space between the ground G and the reinforcing bar S is narrow and the binding operation is performed, the induction part 800 is manually rotated from the position P1 to the second position P2 so as to reduce the amount of protrusion of the induction part 800 from the tip end-side of the first guide 51 in the direction of the axis line Ax.
The operator grips the head portion 850b of the pin 850, and as shown in
Subsequently, as shown in
When the second engaging portion 820 is moved to the engaging position of the pin 850, the force of separating the head portion 850b of the pin 850 or gripping the head portion 850b of the pin 850 is relaxed. Thereby, the tension spring 870 is compressed and returns to the original state, and the pin 850 moves toward the second engaging portion 820 in a direction of an arrow C2, so that the pin 850 is engaged with the second engaging portion 820. By moving the tip end portion 800a from the first position P1 to the second position P2 by such an operation of the operator, the amount of protrusion of the induction part 800 from the tip end-side of the first guide 51 in the direction of the axis line Ax can be reduced, and the reinforcing bar S can be inserted into the insertion/pulling-out opening 53 to reliably press the contact member 9L.
According to the third embodiment, the substantially similar effects to those of the first embodiment can be obtained. For example, when performing the operation at a site where the space between the reinforcing bar S and the ground G is narrow, the induction part 900 is manually rotated before the binding operation. Therefore, the amount of protrusion of the induction part 900 from the tip end-side of the first guide 51 can be reduced. Thereby, the reinforcing bar S can be reliably inserted into the insertion/pulling-out opening 53 between the first guide 51 and the second guide 52, and the contact members 9L and 9R can be pressed by the reinforcing bar S.
Note that, in the third embodiment, the reference of the distance when the induction part 800 is varied is the contact part 11. However, the present invention is not limited thereto, and as described in the first embodiment, the drive unit 8, the handle parts 304hL and 304hR, which are a grip part, or the tip end portion 51a1 of the guide arm 51a may be used as a reference.
An induction part 900 of a reinforcing bar binding machine 1D according to a fourth embodiment is different from the induction part 600 of the reinforcing bar binding machine 1A according to the first embodiment, and the like, in that the induction part 900 is configured to be manually rotatable with respect to a shaft (pin 950) provided in a direction orthogonal to the axis line Ax. Note that, in the fourth embodiment, as for the configuration and operation common to the first embodiment, the overlapping descriptions are omitted by quoting the descriptions of the first embodiment.
(Configuration Example of Induction Part 900)
As shown in
Further, the induction part 900 is configured to be able to vary an amount of protrusion with respect to the first guide 51 by the operator manually rotating the induction part 900 about a shaft (pin 950; which will be described later) orthogonal to the axis line Ax as a fulcrum, when performing an operation at a site where the space between the ground G, which is an obstacle, and the reinforcing bar S is narrow. That is, the induction part 900 is configured so that a distance between the induction part and the contact part 11 provided to the second body part 302 can be varied according to the space between the reinforcing bar S, which is a binding object, and the ground G.
Specifically, in a case of performing an operation at a site where the space between the reinforcing bar S and the ground G is wide, as shown in
As shown in
The guide cover 51b is formed with a long hole 580 for moving the induction part 800 to a position where an engaged state of the first engaging portion 810 and the second engaging portion 820 can be released. A longitudinal direction of the long hole 580 is substantially parallel to the axis line Ax.
The induction part 900 is constituted by, for example, a pair of flat plates arranged to face each other, and is fitted to the outer side of the guide cover 51b. Similar to the induction part 800, the guide cover 51b is also constituted by, for example, a pair of flat plates arranged to face each other, and is fitted to the outer side of the guide arm 51a.
A pin 940 is inserted into the guide cover 51b. A portion of the pin 940 exposed inward from the guide cover 51b is engaged with a concave portion 582 of the guide arm 51a.
The pin 930 is inserted into the guide cover 51b, from one side toward the other side. One end portion of the pin 930 is provided with the head portion (engaged portion) 930b having a diameter larger than a shaft portion. The head portion 930b is exposed from one side surface of the guide cover 51b, and can be engaged to the first engaging portion 910 and the second engaging portion 920. A stopper 932 for preventing the pin 930 from coming off is attached to the other end portion of the pin 930. In addition, the other end portion is held by a collar 933.
A pin 950 is inserted into the long hole 580 of the guide cover 51b and a hole 960 of the induction part 600, from one side toward the other side. A stopper 952 for preventing the pin 950 from coming off is attached to the other end portion of the pin 950. The induction part 900 is adapted to be movable between the first position P1 and the second position P2 along the long hole 580 of the guide cover 51b with the pin 950 as a fulcrum.
A tension spring 990 is provided between the plates of the guide cover 51b. One end portion of the tension spring 990 is attached to the pin 930 and the other end portion of the tension spring 990 is attached to the pin 950. Thereby, the induction part 900 is urged toward the contact member 9L (an opposite direction to an arrow I1 in
(Operation Example of Induction Part 900)
Next, an example of an operation of the induction part 900 according to the fourth embodiment is described. Note that, in a usual state, as shown in
In a case where the space between the ground G and the reinforcing bar S is narrow and the binding operation is performed, the induction part 900 is manually rotated from the position P1 to the second position P2 so as to reduce the amount of protrusion of the induction part 900 from the tip end-side of the first guide 51 in the direction of the axis line Ax.
As shown in
Subsequently, as shown in
In this state, when the force of separating or gripping the induction part 900 is relaxed, as shown in
According to the fourth embodiment, the substantially similar effects to those of the first embodiment can be obtained. Specifically, when performing the operation at a site where the space between the reinforcing bar S and the ground G is narrow, the induction part 900 is manually rotated before the binding operation. Therefore, the amount of protrusion of the induction part 900 from the tip end-side of the first guide 51 can be reduced. Thereby, the reinforcing bar S can be reliably inserted into the insertion/pulling-out opening 53 between the first guide 51 and the second guide 52, and the contact members 9L and 9R can be pressed by the reinforcing bar S.
Note that, in the fourth embodiment, the reference of the distance when the induction part 900 is varied is the contact part 11. However, the present invention is not limited thereto, and as described in the first embodiment, the drive unit 8, the handle parts 304hL and 304hR, which are a grip part, or the tip end portion 51a1 of the guide arm 51a may be used as a reference.
Although the embodiments of the present disclosure have been described in detail with reference to the drawings, the specific configuration is not limited to the present embodiments, and includes designs and the like within a range that does not deviate from the gist of the present disclosure. Further, the effects described in the present specification are merely exemplary and not limited, and other effects may also be obtained.
For example, in the above-described embodiments, the examples have been described in which the induction parts 600 to 900 or the like are applied to the reinforcing bar binding machine 1A and the like where the first body part 301 having a grip part such as the handle part 304hL and the second body part 302 having the twisting unit 7 and the like are connected by the elongated connecting part 303. However, the present invention is not limited thereto. For example, the above-described induction parts 600 to 900 or the like can be applied to a guide part of a handy type reinforcing bar binding machine having a grip part and the like provided to the second body part 302.
Further, in the above-described embodiments, the examples in which the first guide 51 is provided with the guide parts 600 to 900 have been described. However, the present invention is not limited thereto. For example, in a case where a length of the second guide 52 in the direction of the axis line Ax is longer than that of the first guide 51, and therefore, the second guide 52 first comes into contact with an obstacle such as the ground G, the above-described induction part 600 or the like may be attached to the tip end-side of the second guide 52.
Further, in the above-described embodiments, the drive unit 8 is configured to drive the cutting unit 6, the twisting unit 7 and the like. However, the driving unit 8 may also be configured to drive only the twisting unit 7, and the other configurations such as the cutting unit 6 may be driven using another drive source.
| Number | Date | Country | Kind |
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| 2021-021732 | Feb 2021 | JP | national |
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| Number | Date | Country | |
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| 20220259875 A1 | Aug 2022 | US |
