JP2016037324A - Binding tool and binding work method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a binding tool with a simple structure, in which a reliable binding state of an object to be bound can be obtained, and binding work as well as binding release work can be easily performed.SOLUTION: A binding tool comprises a coil spring extendable in an axial direction, and a grip part extending from one end of the coil spring. With the binding tool, a reliable binding state can be obtained by winding the coil spring around an object to be bound. Especially, during the winding work, a user can wind the coil spring around the object to be bound while gripping the grip part extending from the coil spring, and extending the coil spring. This enables easy and reliable binding work. In addition, the user can easily unwind the coil spring from the object to be bound while gripping the grip part of the binding tool for binding the object to be bound, and extending the coil spring as described above.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a binding tool and a binding work method.

  Generally, a binding tool is used to maintain a state in which string-like bodies such as an electric cord, a cable, a rope, and a wire are bundled. As such a binding tool, a binding band is known in which a band-shaped band is wound around a wire and then the band is fixed by a fastener (for example, Patent Document 1). This binding band is provided with a hole portion into which one end of the band can be inserted into the fastener, and a structure for locking the inserted band is provided in the hole portion, so that the binding state by the band is maintained. .

  However, in the conventional binding band, it is difficult to release the binding state because the band is strongly locked. Moreover, when it is set as the latching structure which makes the cancellation | release operation | work of a binding state easy, there exists a possibility that a band may detach | leave from a fastener carelessly.

JP2013-124123A

  The present invention has been made in view of the above inconveniences, and provides a binding tool that has a simple structure, provides a reliable binding state of a binding object, and can easily perform a binding operation and a binding release operation. In addition, it is an object of the present invention to provide a bundling work method in which a sure bundling state can be easily obtained although the bundling release work can be easily performed.

  In order to solve the above-described problem, the binding device according to the present invention includes a coil spring that can be expanded and contracted in the axial direction, and a grip portion that extends from one end of the coil spring in the axial direction.

  In the binding tool, a reliable binding state can be obtained by winding the coil spring around the binding object. In particular, at the time of this binding work, the gripping part extending from the coil spring can be gripped and the coil spring can be wound while being extended, so that the binding work can be easily and reliably performed. Furthermore, as described above, the coil spring can be unwound from the binding object while holding the grip portion of the binding tool for binding the binding object and extending the spring, and the binding release operation can be easily performed. it can.

  In the binding tool, it is preferable that the coil spring can change a right-handed state and a left-handed state. Thereby, a stronger binding state can be obtained by winding the coil spring around the binding object while reversely winding the coil spring. That is, for example, when the coil spring is normally a left-handed coil spring, when the coil spring is wound around the object to be bound while being stretched, the binding state becomes stronger due to the force of the coil spring to return to its original state.

  In the binding tool, the grip portion may have an annular portion at one end. Thereby, the said binding tool can be attached to another member using an annular region. For this reason, the loss of the said binding tool can be prevented, and the string-like body bound by the said binding tool can be arrange | positioned in a desired position.

  The binding tool may further include another grip portion disposed on the other end side of the coil spring. Thus, the coil spring can be easily and reliably extended by gripping the pair of grip portions disposed on both sides of the coil spring, so that the binding operation and the binding release operation can be performed more easily.

  In the binding tool, it is preferable that the gripping portion has an extending portion that extends from the coil spring and a swinging piece that is swingably attached to the tip of the extending portion. Thus, when the coil spring is extended while gripping the swing piece, the swing of the swing piece makes it possible to easily and reliably extend the coil spring in the binding work and the binding release work.

  The number of turns of the coil spring is preferably 3 to 15 times. As a result, a reliable binding state of the binding object can be obtained, and the binding work and the binding release work can be easily performed.

  In the binding tool, it is possible to form a coil spring from a resin or the like, but the coil spring is a core wire formed by twisting a plurality of steel wires, and a synthetic resin layer coated on the outer periphery of the core wire It is good to have. Since the coil spring has a core wire, it is excellent in durability and elasticity, and by having a synthetic resin layer covering the core wire, deterioration of the core wire can be prevented.

  Moreover, the binding work method according to the present invention includes a step of winding the coil spring of the binding tool having the above-described configuration around the binding object. Thereby, although a binding release operation can be easily performed, a reliable binding state can be easily obtained.

  The number of turns of the coil spring means the number of turns of the coil spring in the original state.

  As described above, according to the present invention, the binding tool has a simple structure, and the binding object can be reliably bound, and the binding work and the binding release work are easy.

It is a typical front view showing one embodiment of a binding tool concerning the present invention. It is a typical front view which shows the binding state of the binding target object by the binding tool of FIG. It is a typical front view of the state which wound the coil spring of the binding tool of FIG. 1 reversely. It is typical sectional drawing of the linear member which comprises the coil spring and holding part of the binding tool of FIG. It is a schematic diagram which shows the process of the binding operation | work of the binding target object by the binding tool of FIG. It is a schematic diagram which shows the process of the binding operation | work of the binding target object by the binding tool of FIG. It is a schematic diagram which shows the process of the other binding work of the binding target object by the binding tool of FIG. It is a typical front view which shows the other binding state of the binding target object by the binding tool of FIG. It is a schematic diagram which shows the state which passed the string through the annular site | part of the binding tool of FIG. It is a typical front view which shows other embodiment of the binding tool which concerns on this invention. It is a typical front view which shows other embodiment of the binding tool which concerns on this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.

<Binder>
1 includes a coil spring 3 that can be expanded and contracted in the axial direction, and a grip 4 that extends from one end of the coil spring 3 in the axial direction. As shown in FIG. 2, the binding tool 1 is formed by winding a coil spring 3 around the binding object P in a state where the gripping portion 4 is attached to the bundled string-like body (binding object P). The body can be united.

  In the binding tool 1, the coil spring 3 and the grip portion 4 are integrally formed. In the present embodiment, the coil spring 3 and the grip portion 4 are composed of the same linear member 2. Specifically, first, the gripping portion 4 and the coil spring 3 are integrally formed in a state where a helical shape is attached so that the gripping portion 4 and the coil spring 3 can expand and contract in the axial direction, and then the end portion is extended in the axial direction. A grip portion 4 having a shape extending along the axial direction is provided.

(coil spring)
The coil spring 3 has elasticity that can expand and contract in the axial direction of the spiral, and is provided as an extension coil spring. That is, the coil spring 3 is in a contracted state in an original state (a state in which no force is applied), and extends in the axial direction of the spiral when a tension is applied, and returns to the original state by a restoring force when the tension is removed from the extended state. It is provided to (shrink).

  The coil spring 3 is provided not only in the axial direction but also in a radial direction (a plane direction orthogonal to the longitudinal direction) so as to be able to expand and contract. That is, when the coil spring 3 is wound around a member larger than its inner diameter, the diameter is increased, and when the coil spring 3 is detached from the larger member, the original shape is restored (reduced diameter) by an elastic restoring force.

  The coil spring 3 can change between a right-handed state and a left-handed state. Specifically, the coil spring 3 is in a left-handed state as shown in FIG. 1 in the original state, but can also be wound in a left-handed state as shown in FIG. have.

  The coil spring 3 is provided in close winding, and adjacent portions of the coil spring 3 are in contact with each other in the original state. In addition, although the pitch with respect to the wire diameter in the original state is preferably 1 time, it is not necessarily limited to this. Moreover, as an upper limit of the pitch with respect to the wire diameter in an original state, 2 times are preferable, 1.5 times are more preferable, and 1.1 times are further more preferable. If the pitch exceeds the upper limit, it may be difficult to change from the original state to the reverse winding state.

  The spring constant of the coil spring 3 is not particularly limited, but the lower limit of the spring constant is preferably 5 N / m, more preferably 10 N / m, and even more preferably 20 N / m. The upper limit of the spring constant is preferably 200 N / m, more preferably 100 N / m, and still more preferably 80 N / m. If the spring constant of the coil spring 3 is less than the lower limit, the coil spring 3 may be carelessly detached from the bound object P in a bound state. On the other hand, if the spring constant of the coil spring 3 exceeds the upper limit, the coil spring 3 may not be easily extended during the binding work and the binding release work.

  The inner diameter of the coil spring 3 is not particularly limited, but the lower limit of the average inner diameter (original state) of the coil spring 3 is preferably 0.5 cm, more preferably 1 cm, and even more preferably 1.5 cm. Moreover, as an upper limit of the average internal diameter of the coil spring 3, 10 cm is preferable, 8 cm is more preferable, and 6 cm is further more preferable. If the average inner diameter of the coil spring 3 is within the above range, the coil spring 3 can be easily and reliably wound around the binding object P. That is, if the average inner diameter of the coil spring 3 is less than the lower limit, it may be difficult to wind the coil spring 3 around the large binding object P. On the other hand, if the average inner diameter of the coil spring 3 exceeds the upper limit, the coil spring 3 may be inadvertently dropped from the binding object P after being wound around the binding object P. The average inner diameter of the coil spring 3 means the average of the inner diameters of five locations that are equally divided into six in the axial direction (longitudinal direction of the loop body) in the virtual cross section including the central axis of the spiral in the original state.

  The number of turns (original state) of the coil spring 3 is not particularly limited, but the lower limit of the number of turns of the coil spring 3 is preferably 3 times, more preferably 3.5 times, and even more preferably 4 times. Further, the upper limit of the number of turns of the coil spring 3 is preferably 15 times, more preferably 12 times, and even more preferably 8 times. If the number of turns of the coil spring 3 is less than the lower limit, the coil spring 3 wound around the binding object P may be carelessly detached. On the other hand, if the number of turns of the coil spring 3 exceeds the upper limit, the work of winding the coil spring 3 around the binding object P may be complicated.

  The length of the coil spring 3 (the length in the axial direction) is not particularly limited, but the lower limit of the length of the coil spring 3 in the contracted state is preferably 1 cm, more preferably 1.5 cm, and 2 cm. Further preferred. The upper limit of the length of the coil spring 3 in this contracted state is preferably 15 cm, more preferably 10 cm, and even more preferably 5 cm. If the length of the coil spring 3 in the contracted state is less than the lower limit, the number of turns of the coil spring 3 may be too small. On the other hand, when the length of the coil spring 3 exceeds the upper limit, the work of winding the coil spring 3 around the binding object P may be complicated.

  The length of the coil spring 3 in the extended state is not particularly limited, but the lower limit of the ratio of the length of the coil spring 3 to the contracted state is preferably 2 times, and 2.5 times. More preferred is 3 times. When the ratio of the length of the coil spring 3 in the contracted state to the length in the contracted state is less than the lower limit, it may be difficult to wind the coil spring 3 around the binding object P. The length of the coil spring 3 in the extended state means the length of the coil spring 3 within an elastic limit where the coil spring 3 can be elastically restored without being plastically deformed. That is, for example, the ratio of the length of the coil spring 3 in the contracted state to the length of the stretched state is twice or more means that the coil spring 3 is brought into the original state after the length of the coil spring 3 is doubled. This means that the restoring elastic restoring force acts. Further, the upper limit of the ratio of the length of the coil spring 3 in the contracted state to the length of the expanded state is not particularly limited, but the upper limit is, for example, 20 times or 10 times.

(Gripping part)
The grip part 4 extends in the axial direction from one end of the coil spring 3 as described above. The extending direction of the gripping portion 4 is the side where the coil spring 3 does not exist in the original state (left-handed state) as shown in FIG. 1, and the coil spring 3 is in the reverse-wound state (right-handed state) as shown in FIG. The side that exists. As shown in FIG. 4, the gripping portion 4 is a portion that is gripped together with the binding object P when the coil spring 3 is wound around the binding target P, thereby easily extending the coil spring 3 and performing the binding work. It can be carried out. Note that the gripping portion 4 is also gripped when the coil spring 3 is detached from the binding object P.

  The length of the grip portion 4 is not particularly limited, but the lower limit of the length of the grip portion 4 is preferably 2 cm, more preferably 2.5 cm, and even more preferably 3 cm. The upper limit of the length of the grip portion 4 is preferably 10 cm, more preferably 8 cm, and even more preferably 6 cm. If the length of the gripping portion 4 is less than the lower limit, it may be difficult to grip the gripping portion 4 in the winding work of the coil spring 3 or the like. If the length of the grip portion 4 exceeds the above upper limit, the grip portion 4 becomes too large, which may cause an obstacle.

  The grip portion 4 has an annular portion 4a at one end. Specifically, the grip portion 4 has an annular portion 4a formed at the tip end by folding the tip end of the linear member 2 and fixing the grip member 4 to the middle portion with the fixture 5. The use of the annular part 4a is not particularly limited. For example, the binding tool 1 is attached to the annular part 4a to the string-like body as the binding object P, or a string or the like is inserted into the annular part 4a. It can be used for suspending the binding tool 1 on another member (for example, a wall surface) (see FIG. 9). The shape of the annular portion 4a is not particularly limited, and various shapes can be adopted. In this embodiment, the coil spring 3 is provided in an elliptical shape with a long axial direction.

  The fixing tool 5 includes a metal caulking part that is clamped by sandwiching both the tip and the middle part of the linear member 2 constituting the gripping part 4 and a synthetic resin that covers the outer periphery of the caulking part. And have a layer. For this reason, the fixture 5 has a larger diameter than the grip portion 4.

  Although the size of the annular portion 4a is not particularly limited, the lower limit of the maximum inner diameter of the annular portion 4a (the inner diameter in the axial direction of the coil spring 3) is preferably 4 mm, more preferably 5 mm, and further 6 mm. preferable. The upper limit of the maximum inner diameter of the longitudinal axis of the annular portion 4a is preferably 5 cm, more preferably 3 cm, and even more preferably 1 cm. Further, the lower limit of the maximum inner diameter (maximum inner diameter in the radial direction of the coil spring 3) of the short axis (axis orthogonal to the longitudinal axis) of the annular portion 4a is preferably 3 mm, more preferably 4 mm, and even more preferably 5 mm. The upper limit of the maximum inner diameter of the short shaft of the annular portion 4a is preferably 2 cm, more preferably 1.5 cm, and even more preferably 0.8 cm. If the maximum inner diameter of the annular portion 4a is less than the lower limit, it may be difficult to insert a string or the like into the annular portion 4a. If the maximum inner diameter of the annular portion 4a exceeds the above upper limit, the annular portion 4a becomes too large, and the annular portion 4a may become an obstacle.

(Material)
The material of the said binding tool 1 is not specifically limited, For example, the thing made from a synthetic resin is also employable. In the present embodiment, the coil spring 3 and the grip portion 4 have a core wire 2b formed by twisting together a plurality of steel wires 2a, as shown in FIG. Excellent strength and elasticity. Moreover, the coil spring 3 and the holding part 4 have the synthetic resin layer 2c coat | covered by the outer periphery of this core wire 2b, and a cross-sectional shape is provided circularly. Thus, since the coil spring 3 and the holding part 4 have the synthetic resin layer 2c covered with the core wire 2b, deterioration of the core wire 2b or the like can be prevented.

  The internal structures of the coil spring 3 and the grip portion 4 are not particularly limited, but a plurality of core wires 2b composed of a plurality of steel wires 2a and a plurality of steel wires 2a. What has the strand 2d and the interstitial material 2e inserted | pinched between the core wire 2b and the strand 2d is employable.

  Further, the material of the steel wire 2a, which is the minimum unit wire constituting the core wire 2b and the strand 2d, is not particularly limited, but has a high allowable stress and high durability against repeated loads. It is preferable that it is the piano steel wire which is excellent in elasticity.

  The material for the synthetic resin layer is not particularly limited. For example, polyurethane, nylon elastomer, polyether block amide, polyethylene, polypropylene, polyvinyl chloride, polyamide, polystyrene, fluorine resin, silicone resin, vinyl acetate. One type of resin or the like can be used alone or in combination of two or more. Among these, it is preferable to employ polyvinyl chloride that exhibits good flexibility and is easily available.

<Bundling work method using the binding tool>
The binding work method using the binding tool 1 includes a step of winding the coil spring 3 of the binding tool 1 around the binding target P. Specifically, in this winding step, the coil spring 3 can be wound while the gripping portion 4 of the binding tool 1 is gripped, and the binding work can be performed easily and reliably. Since the binding tool 1 can be changed between a right-handed state and a left-handed state as described above, a method of winding the coil spring 3 with a normal winding (in a right-handed state as shown in FIG. There are a winding method) and a reverse winding method (a method of winding in a left-handed state as shown in FIG. 8). Each specific example will be described below.

  First, a normal winding method will be described. As shown in FIG. 5, the gripping portion 4 of the binding tool 1 is gripped with one hand together with the bundled string-like object that is the binding object P, and the other hand of the coil spring 3 is gripped with the other hand. The coil spring 3 is extended by being pulled. Then, as shown in FIG. 6, the coil spring 3 is wound around the binding object P sequentially in a left-handed manner, whereby the binding state shown in FIG. 2 is obtained.

  On the other hand, the reverse winding method is a method in which the coil spring 3 is wound in the axial direction opposite to that in the case of the normal winding, and specifically, is as follows. First, the gripping portion 4 of the binding tool 1 is gripped with the binding object P with one hand, the other hand of the coil spring 3 is gripped with the other hand, and the coil spring 3 is pulled to extend, and FIG. As shown in FIG. 8, the coil spring 3 is wound around the binding object P and the gripping part 4 sequentially in the right-hand direction toward the side where the axial gripping part 4 exists, so that the binding state of the binding target P shown in FIG. Is obtained.

<Binding release work of the binding tool>
The coil spring 3 bound as described above can be released from the bound state by sequentially unwinding from the binding object P while pulling the other end of the coil spring 3 and extending the coil spring 3.

<Advantages>
In the binding tool 1, a reliable binding state can be obtained by winding the coil spring 3 around the binding object P. In particular, since the coil spring 3 has an elastic restoring force in the radial direction, when the binding object P having a diameter larger than the average inner diameter of the coil spring 3 is bound, the elastic restoring force of the coil spring 3 causes the binding object P to move. By acting in the binding direction, the binding state is easily maintained accurately.

  Further, as described above, the coil spring 3 can be reversely wound to obtain a bound state of the object P to be bound. In the bound state by the reversely wound coil spring 3, the coil spring 3 is strongly adhered in the axial direction by the restoring elastic force. As a result, a strong binding state of the binding object P is obtained. In addition, since the grip portion 4 is clamped by the coil spring 3 together with the binding object P, the restoring elastic force of the coil spring 3 strongly acts on the binding object P also in the radial direction, and a strong binding state can be obtained also by this. . For this reason, even if it uses the said binding tool 1 in the place which does not consider vibration, such as a bicycle and a motor vehicle, the binding state of the binding target object P can be maintained exactly.

  Moreover, since the said binding tool 1 can extend | stretch the coil spring 3 easily using the holding part 4 as mentioned above, it can perform a binding operation | work and a binding release operation | work easily. In the above description, the gripping portion 4 is gripped together with the binding object P and the binding work is performed. However, in the binding tool 1, the other end of the coil spring 3 is bound with one hand. It is also possible to hold the object P together with the object P, hold the holding part 4 with the other hand, extend the coil spring 3, and perform the binding work.

  Furthermore, since the grip part 4 is provided along the axial direction of the coil spring 3, the grip part 4 is positioned along the binding object P in the bound state, so that the grip part 4 does not get in the way in the bound state. . Moreover, even in the binding operation, by arranging the grip portion 4 along the binding target P, both the binding target P and the grip portion 4 can be easily gripped with one hand. Further, since the grip portion 4 is provided on the side where the coil does not exist in the original state, when the coil spring 3 is wound in the reverse direction as shown in FIG. 7, both the grip portion 4 and the binding object P are attached. The coil spring 3 can be easily wound around the grip portion 4 and the binding object P by gripping.

  Further, the holding part 4 is provided with a fixing tool 5 for fixing the annular portion 4a. Since the fixing tool 5 is larger than the holding part 4, the holding part 4 is stronger and stronger when holding the holding part 4. Reliable gripping can be performed.

  Furthermore, since the binding tool 1 can be attached to another member by inserting a string or the like through the annular portion 4a, the binding tool 1 can be prevented from being lost, and further inserted as described above. The binding object P bound by the binding tool 1 can be hung at a desired position by the straps and the like.

<Other embodiments>
In addition, this invention is not limited to the said embodiment, A design change is possible suitably within the range which this invention intends.

  In the above-described embodiment, the grip 4 is provided at one end of the coil spring 3 and nothing is provided at the other end. However, like the binding tool 11 shown in FIG. It is also possible to arrange another gripping part 7 on the other end side. Thus, the coil spring 3 can be easily and reliably extended by gripping the pair of gripping portions 4 with each hand, and thus the above-described bundling operation and bundling release operation can be performed more easily and reliably. In FIG. 10 and FIG. 11 described later, the same reference numerals are used for members having the same configuration or function as the above embodiment.

  Furthermore, in the said embodiment, although the holding part 4 comprised what comprised the same linear member 2 as the coil spring 3, this invention is not limited to this. That is, like the binding tool 11 shown in FIG. 10, the other gripping portion 7 has an extending portion 7 a extending from the other end of the coil spring 3, and further swings at the distal end of the extending portion 7 a. It is possible to adopt a configuration having the swing piece 7b that can be attached. In the binding tool shown in FIG. 10, when the coil spring 3 is extended, the swinging piece 7b can be swung by gripping the swinging piece 7b, so that the coil spring in the binding work and the binding releasing work can be performed. 3 can be more easily and reliably performed. In addition, in FIG. 10, the said extension part 7a is comprised from the same linear member 2 as the coil spring 3 similarly to the holding | gripping part 4 of the said embodiment, and is extended | stretched after the helical shape was given a habit. What is formed is illustrated. The swing piece 7b can be constituted by a pulling hand (a gripping piece attached to the slider portion of the wire fastener) swingably attached to an attachment portion 7c provided at the tip of the extension portion 7a.

  Moreover, in the said embodiment, although the binding tool 1 was demonstrated as what was formed separately from the binding target P, this invention is not limited to this, As the said binding tool 21 is shown in FIG. It is also possible to provide it integrally with the binding object P. In the binding tool 21 shown in FIG. 11, the gripping portions 4 and 7 are extended from both ends of the coil spring 3, and the gripping portions 4 and 7 are connected by the binding object P that is a string-like body and the fixing tool 9. Has been. Note that the binding tool 21 as shown in FIG. 11 is preferably provided near the end of the binding object P, which is a string-like body, whereby the binding object P on the side where the binding tool 21 is not provided. After being folded and bundled, the binding object P can be easily bound by winding the coil spring 3 of the binding tool 21 around the bundled binding object P.

  Furthermore, in the said embodiment, although the linear member 2 which comprises the coil spring 3 and the holding part 4 demonstrated what has the metal core wire 2b, this invention is not limited to this, A coil spring It is also within the intended scope of the present invention that 3 and the gripping part 4 are made of synthetic resin without having a metal core wire.

  Furthermore, in the said embodiment, although what bound and bundled one string-like object as the binding target object P is illustrated, the binding target object P is not limited to this, For example, multiple binding target object P It is also possible to bind a binding object obtained by bundling a string-like body with the binding tool.

  Moreover, in the said embodiment, although the number of turns of the coil spring 3 of an original state and the number of turns after winding are shown in figure, this invention is not limited to this. In particular, in a binding object having a diameter larger than the inner diameter of the coil spring, the number of turns of the coil spring after winding may be smaller than the number of turns of the coil spring in the original state.

  As described above, the binding tool of the present invention can reliably bind the binding object with a simple structure, and can easily perform the binding work and the binding release work, so that the binding of electric cords, cables, ropes, wires, etc. Can be used widely and suitably.

DESCRIPTION OF SYMBOLS 1, 11, 21 Binding tool 2 Linear member 2a Steel wire 2b Core wire 2c Synthetic resin layer 2d Strand 2e Interstitial material 3 Coil spring 4 Gripping part 4a Annular part 5 Fixing part 7 Gripping part 7a Extension part 7b Gripping piece 7c Attachment Part 9 Fixing P Binding object

Claims (8)

  A binding tool comprising: a coil spring that can be expanded and contracted in the axial direction; and a grip portion that extends in the axial direction from one end of the coil spring.   The binding tool according to claim 1, wherein the coil spring can change a right-handed state and a left-handed state.   The binding tool according to claim 1 or 2, wherein the grip portion has an annular portion at one end.   The binding tool according to claim 1, 2 or 3, further comprising another gripping portion disposed on the other end side of the coil spring.   The said holding | grip part has an extension part extended from the said coil spring, and the rocking | fluctuation piece attached to the front-end | tip of this extension part so that rocking | fluctuation is possible. Bundling tool.   The binding tool according to any one of claims 1 to 5, wherein the number of windings of the coil spring is 3 to 15 times.   The binding tool according to any one of claims 1 to 6, wherein the coil spring includes a core wire formed by twisting a plurality of steel wires, and a synthetic resin layer coated on an outer periphery of the core wire. A binding work method comprising a step of winding the coil spring of the binding tool according to any one of claims 1 to 7 around a binding object.

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