WO2014024295A1

WO2014024295A1 - Manual bundling tool

Info

Publication number: WO2014024295A1
Application number: PCT/JP2012/070370
Authority: WO
Inventors: 透北郷
Original assignee: ヘラマンタイトン株式会社
Priority date: 2012-08-09
Filing date: 2012-08-09
Publication date: 2014-02-13
Also published as: EP2883802A1; EP2883802B1; EP2883802A4; JP6035336B2; CN104487352A; NO2883802T3; JPWO2014024295A1

Abstract

The purpose of the present invention is to provide an easy-to-use manual bundling tool configured in such a manner that tightening and cutting can be carried out by simply squeezing a pair of levers without re-placing the fingers, making bundling work easy. Thus, the manual bundling tool comprises: a tightening mechanism (a) for pulling protruding tie (4a) that passes through a head (5); a cutting mechanism (c) for cutting the protruding tie (4a) near the head (5); first and second levers (1, 2); a tightening linkage mechanism (b) that link both levers (1, 2) and the tightening mechanism (a) when the protruding tie (4a) is being pulled due to the squeezing of the levers (1, 2) being within a prescribed angle range; and a cutting linking mechanism (d) that links both levers (1, 2) and the cutting mechanism (c) when the protruding tie (4a) is cut due to the squeezing of both levers (1, 2) exceeding the prescribed angle. The manual bundling tool is provided with a switching mechanism (e): that places the manual bundling tool in a tightening state in which the tightening linkage mechanism (b) moves and the cutting linking mechanism (d) does not move when a tightening force is less than a set value; and that allows the cutting linking mechanism (d) to move and does not allow the tightening linking mechanism (b) to move when the tightening force reaches the set value.

Description

Manual binding tool

The present invention relates to a manual binding tool for a binding band, and more particularly to a manual binding tool suitable for binding a metal binding band (metal tie).

As this type of manual binding tool, the one disclosed in Patent Document 1 is known. This manual binding tool includes a tightening mechanism (c) for pulling the band portion (a) with respect to the head portion (b), a first lever (1) and a second lever (2) for operating the tightening mechanism (c). ), A cutting mechanism (e) for cutting off the extra band part (a) after tightening, and a third lever (3) for operating the cutting mechanism (e).

As shown in FIGS. 14 and 15 of Patent Document 1, the bundling operation by the manual bundling tool is performed by first bundling a wire harness or the like by grasping the first lever (1) and the second lever (2). Tighten the cable tie wrapped around the subject. When the gripping operation is repeated and the tightening force reaches a predetermined value, the second lever (2) swings back and swings and cannot be tightened. When this tightening is impossible, the finger that has been hung on the second lever (2) is replaced with the third lever (3), and the cutting mechanism is operated by grasping the first lever (1) and the third lever (3). (E) is activated to cut unnecessary band portions, and a series of bundling operations are completed.

In other words, the tightening mechanism is activated by grasping the first lever and the second lever, and the cutting mechanism is activated by grasping the first lever and the third lever. It is convenient and convenient because the binding band can be tightened and cut by one-hand operation including changing fingers. For example, it is excellent that the bundling work can be performed with one hand extended in a high place such as a power transmission line.

JP 2009-262965 A

However, with the realization of the above-described manual binding tool, it has become common to be able to easily and conveniently perform tightening and cutting of the binding band with one-hand operation, and it has become troublesome and troublesome to change fingers. In other words, it has become increasingly difficult to change a plurality of fingers from the second lever to the third lever when the tightening operation is finished and the cutting operation is performed.

Normally, when the manual binding tool is gripped by hand, the second lever is in a state where four fingers other than the thumb are hung. Therefore, in order to move from the tightening operation to the cutting operation, the four fingers of the index finger, middle finger, ring finger, and little finger are exchanged with the third lever. Therefore, it is difficult to perform a series of operations in addition to changing fingers in order.

For example, in use situations where it is relatively easy to get tired, such as when one hand is extended further upward in a high place such as a steel tower, frequent breaks are necessary due to the burden of changing multiple fingers, and continuous binding work However, it was difficult and irrational. In addition, the gripping of one hand with the fingers of the tool is likely to be unstable during the switching of a plurality of fingers, so that the above-described troublesomeness and annoyance increase. With the advent of a manual bundling tool that can be operated with one hand, the work content has become more sophisticated and difficult, and it seems that it cannot be denied that it has become increasingly difficult to change the finger.

The purpose of the present invention is to make it possible to perform a tightening operation and a cutting operation with only a grasping operation of a pair of levers, without changing a plurality of fingers, by further structural contrivance in view of the above situation, The object is to provide a manual bundling tool in which the bundling work is simplified and excellent in usability.

The invention according to claim 1 is a manual binding tool,
A tightening mechanism a for pulling the protruding tie portion 4a protruding through the head portion 5 with respect to the head portion 5;
A cutting mechanism c for cutting the protruding tie portion 4a at a location near the head portion 5;
A first lever 1 and a second lever 2 pivotally connected to each other;
The

levers

1, 2 and the tightening mechanism a are brought into a state where the protruding tie portion 4a is pulled by a relative approaching swing within a range up to a predetermined relative angle between the first lever 1 and the second lever 2. A tightening linkage mechanism b that links
The

levers

1 and 2 and the cutting mechanism c are brought into a state in which the protruding tie portion 4a is cut by the relative approach and swing of the first lever 1 and the second lever 2 exceeding the predetermined relative angle. A cutting linkage mechanism d that links
When the tensile force by the tightening mechanism a is less than a set value, the tightening linkage mechanism b is operated and the cutting linkage mechanism d is not operated, and the tensile force by the tightening mechanism a is set value. In this case, there is provided a switching mechanism e that does not operate the tightening linkage mechanism b and operates the cutting linkage mechanism d.

The invention according to claim 2 is the manual bundling tool according to claim 1,
The cutting mechanism c pushes and deforms the tie portion 4 located in the head portion 5 and pushes and deforms the deformed portion 4b into the hole 10 of the tie portion 4 that is preliminarily fitted to the head portion 5. It is characterized by containing h.

The invention according to claim 3 is the manual bundling tool according to claim 2,
As the two

levers

1 and 2 are swung relative to each other from the standby state in which the first lever 1 and the second lever 2 are most opened and swung by the tightening mechanism a, the protruding tie portion 4a is pulled. It is configured to be pulled by the pulling part i after being gripped by the part i,
When the protruding tie portion 4a is not gripped by the pulling portion i, a return prevention mechanism j for preventing the return movement of the protruding tie portion 4a to the head portion 5 is provided. is there.

The invention according to claim 4 is the manual bundling tool according to any one of claims 1 to 3,
A tightening adjustment mechanism f capable of changing and setting the maximum value of the pulling force by the tightening mechanism a is provided.

According to the first aspect of the present invention, when the pulling force of the protruding tie portion is less than the set value, the tightening mechanism is activated by the switching mechanism, and when the pulling force of the protruding tie portion reaches the set value, the extrusion mechanism Therefore, it is possible to perform the tightening operation and the cutting operation of the binding tie by the gripping operation of only the pair of levers without providing the third lever.
Therefore, even if it is a tightening process or a cutting process, it is sufficient to hold the first and second levers. Therefore, when moving from the tightening operation to the cutting operation, a plurality of fingers are moved from the second lever to the third lever. The conventional troublesome problem of switching is solved.
As a result, tightening and cutting operations can be performed simply by grasping a pair of levers without changing multiple fingers. Can be provided.

According to the second aspect of the present invention, it is possible to provide the push-out mechanism, push out and deform the tie portion, and engage the deformed portion into the hole of the tie portion that is pre-fitted to the head portion. In addition, it can be used for a bundling tie having a structure that does not have a self-locking function (a structure that performs punch engagement) such as a metal tie, and an advantage of excellent versatility is added.

According to the third aspect of the present invention, when the protruding tie portion is not gripped by the pulling portion, the return movement of the protruding tie portion to the head portion is prevented by the return preventing mechanism. The possibility that the tie portion returns and moves when the protruding tie portion is not pulled is eliminated. This eliminates the need for cumbersome operations such as quickly grasping and operating the first and second levers so that the tie portion does not return, and has the advantage that the bundling operation can be performed easily and lightly.

According to the invention of claim 4, since the maximum value of the tension force of the tie portion 4 can be changed and set by the tightening adjustment mechanism and the adjustment of the tightening force can be performed, the tightening force by the binding tie is adjusted to the object to be bound. It is possible to provide a manual bundling tool that is easy to adjust and is easy to use and has great practical advantages.

The manual binding tool by Embodiment 1 is shown, (a) is a perspective view, (b) is a front view. 1 shows the manual bundling tool of FIG. 1, (a) is a rear view, and (b) is a left side view. The front view which shows the internal structure of the manual binding tool of FIG. The disassembled perspective view which shows the structure of the manual binding tool of FIG. The example of a use situation (standby state) of a manual binding tool is shown, (a) is a perspective view seen from a bound object side, (b) is a front view of a partially cutout with an internal structure. A metal binding tie is shown, (a) is an overall view in a free state, (b) is a rear view in the vicinity of the head portion. 6A and 6B show the structure in the vicinity of the head portion in the binding tie shown in FIG. 6, where FIG. 6A is a longitudinal sectional view, and FIG. 6B is a transverse sectional view. Action diagram showing the tightening process in which the protruding tie is pulled Operational diagram showing a state in which the second lever swings most in the tightening step and is in the second position. The enlarged front view which shows the principal part of the manual binding tool shown in FIG. Action diagram of the main part showing a state in which the tightening force reaches the set value and the engagement between the triangular link and the tension arm is disengaged and the transition is made from the tightening process to the punch cutting process Operational diagram showing a state in which the second lever swings most in the punch cutting step and is in the third position. Enlarged view of the main part showing the operating state of the punch cutting process The enlarged front view which shows the principal part of the tool main body in FIG.

Hereinafter, an embodiment of a manual binding tool according to the present invention will be described with reference to the drawings. In the present application, “punch” may be replaced with “punch”, and the manner in which the tie portion 4 is fixed by punch engagement may be expressed as “punch lock type”.

[Embodiment 1]
As shown in FIGS. 1 to 4, the manual binding tool A according to the first embodiment has a tool body 3 having a cutting mechanism c and a tie holding part g at the distal end and a first lever 1 at the proximal end. The tool body 3 includes a second lever 2 pivotally supported by an axis P, a tightening mechanism a, a tightening linkage mechanism b, a cutting linkage mechanism d, a switching mechanism e, a tightening adjustment mechanism f, and the like. Yes. The tightening mechanism a, the tightening linkage mechanism b, the cutting linkage mechanism d, and the switching mechanism e are mainly provided in the tool body 3, and the tightening adjustment mechanism f is mainly provided in the first lever 1. Further, the cutting mechanism c is configured to include an extrusion mechanism h.

First, the bundling operation by the manual bundling tool A will be briefly described. First, as shown in FIG. 5, the protruding tie portion 4a of the bundling tie B that is wound around the bundling target K and temporarily fixed is attached to the tip thereof. Is inserted into the tie passage hole 6 (see FIG. 14) of the tool body 3 and the head part 5 is inserted into the tie holding part g.
Then, as shown in FIGS. 3 and 9, the first lever 1 and the second lever 2 are swung relative to each other until the second lever 2 is moved from the first position t1 to the second position t2, and the tightening mechanism a A gripping operation and a grip releasing operation that forcefully pulls the protruding tie portion 4a with respect to the head portion 5 held by the tie holding portion g by the operation are performed.

When a predetermined tightening force is reached by performing this gripping and releasing operation once or a plurality of times, the second lever 2 is allowed to move from the second position t2 to the third position by the subsequent gripping operation. The
As the second lever 2 swings from the second position t2 to the third position t3, the pushing mechanism h and the cutting mechanism c are actuated (see FIGS. 12 and 13), and the tie portion 4 is locked to the head portion 5. And the protrusion tie part 4a is cut | disconnected in the location right next to the head part 5. FIG.

A binding tie (binding band) B used in the manual binding tool A of Embodiment 1 is made of a metal long strip tie 4 such as a stainless steel plate, a stainless steel plate or the like, as shown in FIGS. This is a separate type metal tie in which the metal head portion 5 is incorporated.
The tie portion 4 is formed of a thin and thin steel strip having a thin thickness, a sharp tip 7 composed of a long inclined edge 7a and a short inclined edge 7b, and a pair of inclined rounded round rectangular shapes near the sharp tip. Hole 7c, a base-side cut-and-raised claw 8, a stopper 9 on the most base side, and an engagement hole 10.

The head portion 5 has a flat, substantially C-shape formed by bending a steel plate thicker than the tie portion 4, and a passage 5 a for inserting the tie portion 4 and a relief on the back side (to-be-bound object side). The hole 5b has a substantially circular notch 5c for passing a punch on the front side. The width in the thickness direction of the passage 5a is set to a dimension that allows the passage 5a to be inserted with almost no gap in a state where the two tie portions 4 are overlapped.
The head portion 5 is inserted into the tie portion 4 from the pointed tip 7 and is cut and raised to elastically deform and pass through the claw 8, and is engaged and installed at a position between the cut and raised claw 8 and the stopper 9. As shown in FIG. 7, the binding tie B in which the head portion 5 is mounted on the tie portion 4 has a state in which the escape hole 5b, the engagement hole 10, and the substantially circular notch 5c are aligned (overlapped) in a straight line. It is configured to be possible.

Next, the manual binding tool A will be described. As shown in FIGS. 1 to 4, 10, and 14, the manual bundling tool A includes a tool body 3 that is integrally provided with a first lever 1, and a second that is pivotally connected to the tool body 3 by an axis P. The lever 2 has a base arm 11 that is pivotally connected to the tool body 3 by an axis P.
The tool body 3 includes a tension arm 12 that can swing around a fulcrum X, a triangular link 13 that can normally swing around an axis P, a cutting mechanism c, and a chuck claw that can swing around a fulcrum Y. 15 and a return spring 16 for the base arm 11 are provided.

The first lever 1, which is a protruding portion of the tool body 3, is equipped with a tightening adjustment mechanism f including an adjustment knob 17 that can be rotated, a tightening force adjusting spring 18, a spring receiver 19 for the tightening force adjusting spring 18, and the like. ing. A tension bar 20 pivotally connected to each of the tension arm 12 and the spring receiver 19 is provided.
The base arm 11 is equipped with a locking claw 21 that can swing at a fulcrum Z, a return spring 22 that attempts to return the locking claw 21 to a standby state, and a spring receiver 23 that is pivotally connected to the return spring 16. Has been.
The second lever 2 is covered with a grip 24 made of synthetic resin, a cutter roller 25 is supported at the tip, and a linear engagement groove 26 is formed at the tip. The engagement groove 26 is arranged and set so as to incline so that the diameter dimension with respect to the axis P increases toward the distal end side (tie holding part g side).

The operation of the tightening adjustment mechanism f is as follows. When the adjustment knob 17 that is rotatably supported by the first lever 1 is turned to the left and tightened, the square nut 35 screwed to the knob shaft 17a is on the left side (on the axis P side) in FIG. It moves and compresses the tightening force adjusting spring 18 between it and the spring receiver 19 to increase the elastic force. As a result, the force by which the tension arm 12 presses and urges the triangular link 13 is increased, and the set tightening force is adjusted to increase.
Conversely, when the adjustment knob 17 is turned to the right to loosen, the square nut 35 moves to the right side (to the adjustment knob 17 side) in FIG. 3 and moves away from the spring receiver 19, so that the tightening force adjustment spring 18 expands and becomes elastic. Power is weakened. Accordingly, the force with which the tension arm 12 presses and biases the triangular link 13 is reduced, and the set tightening force is adjusted to decrease.

The cutting mechanism c is inserted into the holder 30, which is accommodated and supported by the cutter body 14 so as to be slidable and retractable, the cutting blade 27 which is integrally supported by the holder 30, and slidably movable. Are constituted by a punch body 28 supported by, a return spring 29 for returning the cutting blade 27 to the standby position, and the like. In a normal state in which the cutter roller 25 does not press the holder 30, the cutting blade 27 and the punch body 28 are in the retracted standby position (see FIG. 14) by the return spring 29.
As will be described in detail later, the punch body 28 is engaged with the inner tie portion 4 and the head portion 5 by plastic deformation by pushing the tie portion 4, and constitutes an extrusion mechanism h together with a pin 34 (described later). ing.

As shown in FIGS. 3, 4, and 14, the cutter body 14 includes a lower body 14 A and an upper body 14 B disposed above the lower body 14 A, and a cutting mechanism c is accommodated between the two bodies 14 A and 14 B. ing. The return spring 29 is inserted between the upper projection 14a of the lower body 14A and the holder back wall 30a.
The cutting blade 27 has a root portion disposed between a pair of left and right

front side walls

30b, 30b of the holder 30 and is inserted into the holder 30 with a pin 34 that is penetrated together with a punch body 28 accommodated in its own through hole (not shown). Is integrated.
When the cutting mechanism c is not operated by the second lever 2 (in a time other than the “punch cutting step” described later), the front wall 30c of the holder 30 abuts on the upper protrusion 14a by the elasticity of the return spring 29, The blade portion 27a and the pointed punch portion 28a are urged to return to a standby position away from the binding tie B held by the tie holding portion g. Note that the tip shape of the punch portion 28a may be a pin angle or a slightly rounded shape (see FIG. 13).

The chuck claw 15 pivotally supported by the lower body 14A at the fulcrum Y has a gear tooth-shaped chuck portion 15a that guides the tie passage hole 6 by a torsion coil spring 32 (see FIG. 4) provided around the fulcrum Y. It is elastically biased to abut against the wall 6a.
A second lever 2 having a pair of left and

right side walls

2a, 2a is provided inside a base arm 11 having a pair of left and right plates, and a triangular link 13 is provided between the

side walls

2a, 2a. The tension arm 12 is configured to be positioned between a pair of left and

right plate portions

13A and 13A constituting the triangular link 13.

The triangular link 13 made of a pair of left and right plate members has its distal end portion pivotally supported by the elongated hole 21a of the locking claw 21 via the distal end pin 13a, and a root pin 13b is supported at the root portion. A support roller 31 that is externally fitted to the pin 13 b is engaged with the arcuate tip recess 12 a of the tension arm 12.
Further, an intermediate pin 13c is supported at an intermediate portion of the triangular link 13, and the intermediate pin 13c is inserted and engaged with the engagement groove 26 so as to be capable of relative rotation and movement in the groove longitudinal direction.

The tension arm 12 is elastically biased by the tightening force adjusting spring 18 of the tightening adjusting mechanism f so as to swing around the fulcrum X toward the tie holding portion g, whereby the normal arm (the second lever 2 is in the first state). In the standby state at the position t1, the tip pin 13a is positioned at the end of the long hole 21a on the tie holding portion g side, and the intermediate pin 13c is positioned at the end of the engagement groove 26 on the tie holding portion g side. Further, the root pin 13b is arranged substantially coaxially with the axis P due to the positional relationship between the tip and the

intermediate pins

13a and 13c.

As shown in FIGS. 1, 2, 5, 11, and 13, the tie holding portion g is disposed between the head portion 5 between the inner peripheral portions of the pair of left and

right flange portions

36 and 36 at the tip of the upper body 14B. By fitting the left and

right arc portions

5d, 5d, the head portion 5 can be received and held. Immediately below the

flange portions

36, 36, a restriction projection 37 formed on the top surface of the tip of the lower body 14A is located. The accompanying movement of the head portion 5 due to the protruding tie portion 4a being pulled has a structure in which the end edge of the head portion 5 comes into contact with the restricting projection 37 to become a stopper and is positioned so as not to be drawn further. .
In the positioned state, as shown in FIG. 13, the escape hole 5b and the substantially circular notch 5c of the head portion 5, the engagement hole 10 of the tie portion 4, and the punch portion 28a are coaxial with each other. The dimensions are set so that

As shown in FIG. 4, the tool main body 3 is composed of a left main body case 3A and a right main body case 3B, and the first lever 1 is configured by their base ends (not shown). Reference numeral 38 denotes a pair of left and right stepped circular and flat support shafts, each of which includes a small diameter portion 38a for supporting the base arm 11 and the second lever 2, and a flange portion 38b fitted and supported by the left and

right body cases

3A and 3B. Become.

Next, a method of binding work using the binding tie B by the manual binding tool A will be described. First, as shown in FIG. 5 and the like, the binding tie B is wound around the binding target K such as three wire harnesses by manual operation with fingers, and the tie portion 4 is passed from the sharp tip 7 to the head portion 5. Perform an artificial mounting process that involves lightly pulling and temporarily mounting.
By performing an operation of inserting the protruding tie portion 4a protruding through the head portion 5 in the tie portion 4 into a tie passage hole 6 formed in the tool body 3, as shown in FIG. A state in which the sharp tip 7 protrudes outside the machine through the passage 11a of the tip is envisaged.

FIG. 5B shows a state in which the binding tie B is mounted on the manual binding tool by the artificial mounting process, and FIG. 3 shows only the manual binding tool in that state. FIG. 3 and FIG. 5B show a standby state in which no grasping operation is performed, that is, a state where the second lever 2 is in the first position t1, which is the standby position.
In this standby state, the butt portion 15b is pushed by the proximal projection 21b of the locking claw 21, and the chuck claw 15 is forcibly swung against the elastic force of the torsion coil spring 32 (see FIG. 4). The chuck portion 15a is clearly separated from the guide wall 6a by the thickness of the tie portion 4 or more. Accordingly, the chuck claw 15 is in a state in which no action is given to the protruding tie portion 4a (non-operating state of the return prevention mechanism j).
In addition, the locking claw 21 has a gear tooth-shaped tip 21c that is clearly separated from the tip inner wall 11b of the base arm 11 (see FIG. 10) by the elastic force of the return spring 22 more than the thickness of the tie portion 4. The locking claw 21 is also in a state in which no action is given to the protruding tie portion 4a.

Then, when the first lever 1 and the second lever 2 are gripped by fingers (not shown) such as the right hand, first, the protruding tie portion is caused by a slight swing of the second lever 2 with respect to the first lever 1. 4a is sandwiched between the distal end portion 21c of the latching claw 21 and the distal end inner wall 11b and locked. That is, the triangular link 13 pushed through the intermediate pin 13c located at the end of the engagement groove 26 on the tie holding portion g side from the standby state shown in FIGS. The tip pin 13a forcibly swings the locking claw 21 around the fulcrum Z against the elastic force of the return spring 22 by pivoting slightly around the axis P.

Then, the tip 21c of the locking claw 21 pushes the tip inner wall 11b across the protruding tie portion 4a, and as shown in FIG. 8, the second lever 2 and the base arm 11 are integrated with each other as the axis P. The projecting tie portion 4 a that swings around and the locking claw 21 exhibits a self-locking action and is gripped by the inner end wall 11 b is forcibly pulled and moved with respect to the head portion 5. Thus, the pulling portion i is constituted by the tip 21c and the tip inner wall 11b, that is, the locking claw 21 and the base arm 11.
At this time, the chuck claw 15 is lightly pressed against the protruding tie portion 4a by the torsion coil spring 32, and a self-locking action that prevents the protruding tie portion 4a from moving back to the head portion 5 can occur. However, movement in the direction in which the protruding tie portion 4a protrudes is allowed (see FIGS. 8 and 9).
When the protruding tie portion 4a is pulled, the length of the tie portion 4 wound around the binding target K is shortened, and a tightening process is performed in which the binding target K is tightened. FIG. 8 shows a state during gripping, that is, a state during the tightening process.

Then, by the slight swing of the second lever 2 from the first position t1, the forcible movement of the chuck claw 15 by pushing the buttocks 15b with the base end side projection 21b of the locking claw 21 is released. Therefore, the chuck claw 15 protrudes and swings due to the elastic force of the torsion coil spring 32 so that the chuck portion 15a is pressed and brought into contact with the guide wall 6a.
As a result, since the protruding tie portion 4a is sandwiched between the chuck portion 15a and the guide wall 6a, the return movement to the head portion 5 causes the self-locking action of the chuck pawl 15 as described above. Be blocked. That is, the lower body 14A having the guide wall 6a and the chuck claw 15 constitute a return prevention mechanism j.

Note that when the second lever 2 is swung relatively close to the first lever 1 by grasping, as shown in FIG. 9, the second lever is moved to the second position t2 where it cannot be swung further. And the tightening process of the tie part 4 by one grip is completed.
That is, by the relative swinging of the second lever 2 from the first position t1 to the second position t2, the tightening linkage mechanism b and the tightening mechanism a are operated, and the protruding tie portion 4a is sandwiched and pulled by the locking claws 21. The tightening process is performed.
As shown in FIGS. 9 and 10, the second position t 2 is such that the plate thickness end surface 11 c on the base end side of the base arm 11 contacts the large-diameter base portion 33 a of the support shaft 33 having the fulcrum X of the tension arm 12. It is a position determined by that. FIG. 10 is a front view of the main part in FIG.

When the tightening process is finished and the gripping of the first and

second levers

1 and 2 by fingers is released in the state shown in FIG. 9, the base arm 11 is caused by the elastic force of the return spring 16 acting on the base end side of the base arm 11. And the second lever 2 are integrally swung back and returned, and a return rocking step for returning to the first position t1 is performed.
In the state where the second lever 2 is swinging back, the above-described self-locking action by the chuck claw 15 functions and the tensioned protruding tie portion 4a is locked and held so as not to move back. In addition, when the elastic force of the tightening force adjusting spring 18 does not substantially act on the triangular link 13 and the elastic force of the return spring 22 acts, the clamping force to the protruding tie portion 4a by the locking claw 21 Disappears, and only the second lever 2 and the base arm 11 return and swing while leaving the pulled protruding tie portion 4a.

By performing the set of the tightening process and the return swing process described above once or a plurality of times, the tightening force of the binding tie B, specifically, the pulling force of the protruding tie portion 4a is set in advance by the tightening adjustment mechanism f. When this value is reached, it automatically switches to the punch cutting process.
That is, when the tightening force reaches the set value, the engagement between the support roller 31 and the tip recess 12a by the tightening adjustment mechanism f (tightening force adjusting spring 18) that determines the set value cannot be maintained, and the self-locking action is performed. The locking claw 21 and the base arm 11 that are exerted cannot be swung further in the tie pulling direction. Therefore, as the second lever 2 is continuously gripped, the intermediate pin 13c moves toward the first lever 1 in the engagement groove 26 as shown in FIG. The arm 12 retreats and swings toward the first lever 1 around the fulcrum X, and the support roller 31 moves away from the tip recess 12a.

Thus, leaving the base arm 11 that cannot be swung further, only the second lever 2 is further gripped and swung to the first lever 1 side, and swung past the second position t2, the second lever 2 is swung. A cutter roller 25 located at the tip of the holder 30 drives the holder 30 in a boosting manner.
Then, as shown in FIGS. 12 and 13, the holder 30 and the cutting blade 27 and the punch body 28 integrated with the holder 30 are forcibly projected and moved against the elastic force of the return spring 29. 11 and 13 and the like, the claw 8 and the stopper 9 are omitted for the sake of simplicity.

First, the punch portion 28a at the tip of the punch body 28 is subjected to plastic deformation (press molding) by pressing the tie portion 4 located in the head portion 5 after passing through the substantially circular notch 5c, and the plastic deformation portion 4b is engaged. An engagement state entering the hole 10 and the escape hole 5b is generated [see FIG. 13B].
Further, the blade part 27 a at the tip of the cutting blade 27 cuts the protruding tie part 4 a at a position just before the head part 5.
At this time, the protruding tie portion 4a is supported on both sides by the head portion 5 and the guide wall 6a, so that the blade portion 27a pushes through the portion that is in a both-end-supported state, and the excess protruding tie portion 4a It cuts reliably and smoothly.

Moreover, as shown in FIG.13 (b), in the state which the cutting blade 27 protrudes most, the tie part 4 located in the to-be-bound object side of the cut | projection tie part 4a cut | disconnected becomes the blade part 27a after a cutting | disconnection. It is in a state of being pushed a little.
However, the tie portion 4 to be pushed is in a cantilever-supported state by the head portion 5 and has a bend to the object to be bound by the tip wall 11A. The blade 27a is not affected at all.

Thus, the second lever 2 can be moved from the second position t2 to the third position t3 only when the set tightening force is reached, and the tie portion is cut by the punch cutting step by the movement to the third position t3. 4 and the tie 4 and the head portion 5 are engaged (punch engagement), and the excess protruding tie portion 4a is cut.
Since the circular plastic deformation portion 4b is press-fitted into the engagement hole 10 and the escape hole 5b, the positive tie engagement between the tie portion 4 itself and the integration with the head portion 5 is performed at once. As a result, the bundling state with the set tightening force can be reliably maintained.
After the protruding tie portion 4a is cut, the restriction on the triangular link 13 by the locking claw 21 is canceled, so that the support roller 31 is moved along with the return swing of the second lever 2 to the first position t1. It returns to the state where the tightening adjustment mechanism f functions effectively (see FIG. 3) by being re-engaged in the tip recess 12a.

In the manual bundling tool A, the tightening mechanism a includes a base arm 11, a locking claw 21, and a return spring 22, as shown in FIGS. The tightening linkage mechanism b includes an engagement groove 26 that fits in the tension arm 12, the triangular link 13, and the intermediate pin 13c.
The cutting linkage mechanism d includes a cutter roller 25, a triangular link 13, an engagement groove 26, and a tension arm 12. The switching mechanism e includes a tightening force adjustment spring 18, a tension bar 20, a tension arm 12, and a triangular link 13.

The tightening linkage mechanism b has a relative approach within a range up to a predetermined relative angle between the first lever 1 and the second lever 2, that is, up to an angle between the first position t1 and the second position t2 with respect to the axis P. The

levers

1, 2 and the tightening mechanism a are linked in a state where the protruding tie portion 4a is pulled by the swinging (tightening process). Further, the cutting linkage mechanism d is in a state in which the protruding tie portion 4a is cut by a predetermined relative angle between the first lever 1 and the second lever 2, that is, by a relative approaching swing beyond the second position t2. Both

levers

1 and 2 and the cutting mechanism c are linked (punch cutting step).
The switching mechanism e is in a tightening state in which the tightening linkage mechanism b is operated and the cutting linkage mechanism d is not operated when the pulling force of the protruding tie portion 4a by the tightening mechanism a is less than a set value. When the pulling force of the protruding tie portion 4a by the mechanism a reaches a set value, the tightening linkage mechanism b does not operate and the cutting linkage mechanism d functions.

As shown in FIG. 14 and the like, the cutting mechanism c is configured to push and deform the tie portion 4 located in the head portion 5 by the punch body 28 by being inserted into the head portion 5 after winding the object to be bound K. The deformable portion (plastic deformable portion) 4b includes an extruding mechanism h that engages the circular engagement hole 10 formed in the tie portion 4 in which the head portion 5 is preliminarily fitted. Yes.
In the first embodiment, since a metal tie is used as the binding tie B, the cutting mechanism c is configured to include the extrusion mechanism h. However, when the head portion uses a binding tie having a configuration including a tie return prevention mechanism. Alternatively, the manual binding tool A provided only with the cutting mechanism c may be used.

By the tightening mechanism a (specifically, the triangular link 13 including the fitting of the tip pin 13a and the long hole 21a and the locking claw 21 are pushed by the second lever 2, and then the tip portion 21c is projected tie portion 4a. The first lever 1 and the second lever 2 are most open and swing from the standby state (shown in FIG. 3) to the two

levers

1 and 2. As the projecting tie portion 4a is gripped by the pulling portion i and is pulled by the pulling portion i, the pulling portion i is pulled.
In addition, when the protruding tie portion 4a is not gripped by the pulling portion i (at least during the return swing process), the return preventing mechanism j prevents the protruding tie portion 4a from returning to the head portion 5. To function. As a result, if the finger force is released to release the grips of the first and

second levers

1 and 2, the return prevention mechanism j is activated from that moment, so that the tightened tie portion 4 can be moved unexpectedly. It is devised not to occur.

As described above, according to the manual binding tool A according to the first embodiment, the switching mechanism e makes the tightening state in which only the tightening mechanism a operates when the tension force of the projecting tie portion 4a is less than the set value, and the projecting tie portion. When the pulling force of 4a reaches the set value, the punch cutting state in which only the pushing mechanism h and the cutting mechanism c are operated is automatically switched. Thus, a series of operations (tightening & punch cutting) of the binding tie B can be performed by a gripping operation of only the pair of

levers

1 and 2 without providing a third lever.

Therefore, even in the tightening process or the cutting process, the first and

second levers

1 and 2 can be left in the gripping state, and when moving from the tightening operation to the cutting operation, the second lever is changed to the third lever. The problem of the conventional manual bundling tool of changing the fingers of the book is solved.
Therefore, it is possible to perform a tightening operation and a cutting operation only by grasping a pair of levers without changing a plurality of fingers, and the manual binding tool A which is easier to bind and easier to use. We were able to provide it.

In addition, in the first embodiment, since the punch body 28 is detachably integrated with the cutting blade 27, the structure in which the tie portion 4 is deformed and inserted into the engagement hole 10 is locked, that is, the self-locking function. It can be adapted to a binding tie B (see FIGS. 6 and 7) that employs a structure that does not have a structure (structure that performs punch engagement). And, if the punch body 28 is removed, it can be used for a bundling tie having a structure that does not take a punch engagement. Therefore, the versatility can be adapted to various bundling ties, and it is convenient and convenient. It also has the advantage of.

When the protruding tie portion 4a is not gripped by the pulling portion i, such as when the second lever 2 is opened and swung from the second position t2 toward the first position t1, the head of the protruding tie portion 4a. Since the return prevention mechanism j for preventing the return movement to the portion 5 is provided, it is unexpected that the tie portion 4 moves back when the protruding tie portion 4a is not pulled in the return swinging process or the like. The risk of things happening is resolved. This eliminates the need for troublesome operations such as quickly grasping the first and

second levers

1 and 2 so that the tie part 4 does not return, so that it is possible to perform a simple and light binding operation with fingers.

Further, since the condition when the switching mechanism e operates, that is, the adjustment of the tightening force can be adjusted by a simple operation by simply turning the adjustment knob 17 to the right or left, the tightening force of the binding tie B is applied to the binding target K. In addition, a manual binding tool A that can be easily adjusted and set and has great practical advantages has been realized.

DESCRIPTION OF SYMBOLS 1 1st lever 2 2nd lever 4 Tie part 4a Projection tie part 4b Deformation part 5 Head part 10 Hole a Tightening mechanism b Tightening linkage mechanism c Cutting mechanism d Cutting linkage mechanism e Switching mechanism f Tightening adjustment mechanism h Pushing mechanism i Pulling part j Return prevention mechanism

Claims

A tightening mechanism for pulling the protruding tie portion protruding through the head portion against the head portion;
A cutting mechanism for cutting the protruding tie portion at a location near the head portion;
A first lever and a second lever pivotally connected to each other;
A tightening linkage mechanism that links the two levers and the tightening mechanism in a state in which the protruding tie portion is pulled by a relative approaching swing within a range up to a predetermined relative angle between the first lever and the second lever; ,
A cutting linkage mechanism that links the two levers and the cutting mechanism in a state in which the protruding tie portion is cut by the relative approach and swing of the first lever and the second lever exceeding the predetermined relative angle. And
When the tension force by the tightening mechanism is less than a set value, the tightening linkage mechanism is operated and the cutting linkage mechanism is not operated, and when the tension force by the tightening mechanism reaches a set value, A manual bundling tool in which a tightening linkage mechanism is not operated and a switching mechanism for operating the cutting linkage mechanism is provided.
2. The cutting mechanism includes an extruding mechanism that extrudes and deforms a tie portion located in the head portion, and engages the deformed portion with a hole of a tie portion on which the head portion is preliminarily fitted. Manual bundling tool as described in.
As the two levers are swung relative to each other from the standby state where the first lever and the second lever are opened and swung most by the tightening mechanism, While being configured to be pulled by the tension part,
The manual bundling tool according to claim 2, further comprising a return prevention mechanism for preventing the protruding tie portion from returning to the head portion when the protruding tie portion is not gripped by the pulling portion.
The manual bundling tool according to any one of claims 1 to 3, further comprising a tightening adjustment mechanism capable of changing and setting a maximum value of a tensile force by the tightening mechanism.