JP5080596B2 - Hose band installation tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely pinch catches of a hose band and also detect that a body of the hose band has surely tightened a hose from a periphery. <P>SOLUTION: A hose band attaching tool includes: a pair of plier bodies 2 and 3 formed of pinching parts 2a and 3a and handles 2b and 3b extending from the pinching parts; and a plier coupling mechanism 6 having a coupling shaft 4 provided for coupling the pair of plier bodies in a crossing state and also having a through hole 5 formed to rotatably support the coupling shaft on another facing region. A slide hole 5a movable in a state that the coupling shaft is fitted is notched on the through hole. The tool is structured such that the coupling shaft slides in the slide hole by elastic force of the body of the hose band if the two catches 12 and 13 of the hose band 10 are held by the two pinching parts by closing the two handles and a diameter of the body 11 enlarges to a predetermined size, and the tool includes a sensing means 7 for sensing the movement. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a hose band attachment tool that facilitates insertion of a hose by expanding the diameter of the hose band when the hose band is attached to a hose to be attached to the outer peripheral portion of a connection end of a pipe.

  A hose band is used to tighten and attach a radiator hose to an upper / hose attachment port and a lower / hose attachment port of an automobile radiator. As shown in FIGS. 5 (A) and 5 (B), the hose band is formed with a belt-like member having elastic force in an annular shape 101, and at both ends of the belt-like member, knobs 102 and 103 are formed. By tightening the hose H from the outer periphery by the elastic force of the annular portion 101, it is possible to prevent the radiator hose H from being detached from the hose attachment port and water leakage from the hose attachment port.

  In the natural state, the hose band 100 can be tightened from the outer periphery by reducing the diameter as shown in FIG. 5A, but the hose band 100 is attached to the outer periphery of the end of the radiator hose. As shown in FIG. 5 (B), the knobs 102 and 103 must be gripped to expand the diameter of the annular portion 101, and the radiator hose H must be inserted therethrough. In order to expand the diameter of the annular portion 101 of the hose band 100 in this way, for example, a plier with a load detection mechanism is used (see, for example, Patent Document 1).

  As shown in FIG. 6, the pliers with a load detection mechanism include a plier member 110 including a sandwiching portion 111 and a handle portion 112 that is extended from the sandwiching portion 111, and a plier member that is positioned symmetrically with the sandwiching portion 111. A sandwiching member 120 pivotally supported by a support shaft 113 provided in a state protruding from 110, a cylindrical handle member 122 coupled to the sandwiching member 120 by a connecting shaft 121 and positioned symmetrically with the handle portion 112; have. The cylindrical handle member 122 has a built-in load detection mechanism 130 having a structure similar to that of a torque detection mechanism in a conventional torque wrench and having a toggle, a spring, and the like (not shown). In response, a signal generator 140 for transmitting a load detection signal which is a radio signal is provided.

  The load detecting mechanism 130 holds the knobs 102 and 103 of the hose band H with the holding part 111 and the holding member 120 so that the toggle operates when the holding pressure becomes equal to or higher than a predetermined set pressure of the spring. Therefore, since the clamping member 120 is rotated about the connecting shaft 121, the signal generator 140 transmits a load detection signal by the rotation operation. By receiving this load detection signal with a receiver (not shown), it is possible to detect that the knobs 102 and 103 of the hose band 100 are gripped by the sandwiching member 111 and the sandwiching member 120.

JP-A-11-123663

  However, in the pliers with a load detection mechanism described in the background art, it can be confirmed that the knobs 102 and 103 of the hose band 100 are gripped by the clamping part 111 and the clamping member 120, but the radiator hose H is connected to the hose band 100. It was not possible to confirm until it was tightened from the outer periphery at the annular portion 101. Therefore, even if the pinching portion 111 and the pinching member 120 of the pliers grip a portion other than the knob portions 102 and 103 of the hose band H, the toggle operates when the gripping pressure exceeds a predetermined set pressure of the spring. Therefore, for example, in the automobile production line, the production manager of the management room where the receiver is arranged determines that the work is normally performed.・ Vehicles where the radiator hose is not properly attached to the hose attachment port and the lower hose attachment port will flow.

  The present invention was made in order to solve such a conventional difficulty, and it is possible to securely grip the knob portion of the hose band and to ensure that the hose band body securely tightens the hose from the outer periphery. It aims at providing the hose band installation tool which can be detected.

  The hose band attachment tool according to the first aspect of the present invention, which achieves the above-mentioned object, has a main body in which a belt-like member having elasticity is formed in an annular shape, and the diameter of the main body after both ends of the main body intersect. By gripping the two knobs against the elastic force of the main body, the hose band is composed of two knobs extending at both ends in a state bent substantially in the radial direction. In the hose band attaching tool to be attached to the hose, in order to connect the pair of pliers main body formed from the holding portion and the handle portion extended from the holding portion, and the pair of pliers main body in a crossed state, A connecting shaft that protrudes toward the other facing portion is provided in one facing portion of the pair of pliers main bodies, and a through-hole that rotatably supports the connecting shaft is formed in the other facing portion. And And a plier coupling mechanism that opens and closes the two clamping portions with the coupling shaft as a fulcrum according to the opening and closing of one handle, and the plier coupling mechanism has a slide hole that is movable in a state where the coupling shaft is fitted in the through hole. When the two handle parts of the hose band are gripped by the two holding parts by closing the two handle parts and the diameter of the main body is expanded to a predetermined size, the elastic force of the hose band main body The connecting shaft is configured to slide along the slide hole, and is provided with detection means for detecting the movement of the connecting shaft as it slides through the slide hole. In this specification, “extension” means provision in an extended state. Further, in this specification, “rotation” means circular movement in the forward and reverse directions.

  According to the hose band attaching tool which is such a first aspect, the hose band is opened from the state where the two gripping portions of the pair of pliers main bodies are opened by rotating the connecting shaft in the through hole. When gripping the two knobs, the plier coupling mechanism closes the two handle parts to grip the two knobs of the hose band with the two clamping parts, and the diameter of the main body reaches a predetermined size. When expanded, the connecting shaft slides through the slide hole due to the elastic force of the hose band body, so that the two gripping parts open by the slide length of the slide hole, thereby making the two knob parts of the hose band elastic. It can be returned to its original position by force. Therefore, the hose band can tighten the hose by the elastic force of the main body.

  The second aspect of the present invention is the hose band mounting tool according to the first aspect. In the hose band attaching tool, the portion that slides the slide hole of the connecting shaft is configured to have two hose bands by closing the two handle portions. When one of the knobs is gripped and the diameter of the main body expands to a predetermined size similar to that of the first aspect, the gripper is formed into a shape that fits into the slide hole.

  According to such a second aspect of the hose band mounting tool, the portion of the connecting shaft that slides through the slide hole is formed in this way, so that the diameter of the hose band main body is the same as that of the first aspect. Since the connecting shaft does not fit into the slide hole until it is expanded to the size, the plier connecting mechanism can be operated accurately.

  According to a third aspect of the present invention, in the hose band attachment tool according to the first aspect or the second aspect, the detection means is a lever switch. According to the hose band attachment tool which is such a 3rd aspect, it can be made to interlock | cooperate with the sliding motion of a connection shaft.

  According to a fourth aspect of the present invention, in the hose band attaching tool according to any one of the first to third aspects, the tool is connected to each of the handle portions of the pair of pliers main bodies, and the connection shaft is used as a fulcrum. One handle portion and two clamping portions are provided with elastic means that always open.

  According to the hose band attaching tool which is such a fourth aspect, since the handle portions of the pair of pliers main bodies are forcibly opened by the elastic means, the connecting shaft is in the direction of the through hole by the elastic force of the elastic means. Therefore, the connecting shaft can always be positioned in the through hole.

  According to a fifth aspect of the present invention, in the hose band attachment tool according to the fourth aspect, the elastic means is a torsion coil spring. According to the hose band mounting tool which is such a fifth aspect, the torsional load is received around the axis, and the load transmitted to one arm can be transmitted to the other arm. By connecting the handle portion of one pliers body and the other arm to the handle portion of the other pliers body, the handle portions of the pair of pliers bodies can be forcibly opened.

  A sixth aspect of the present invention is a hose band attachment tool according to the fourth aspect or the fifth aspect, wherein the opening angle of the handle portions of the two pliers main bodies that are forcibly opened by the elastic force of the elastic means is limited. The flexible member is straddled across the two handle portions. In the present specification, the term “stranding” means that it is provided so as to straddle two members.

  According to the hose band attachment tool which is such a 6th aspect, the clamping interval of two clamping parts can be set to the value which is easy to pinch the two knob parts of a hose band.

  According to the hose band attaching tool of the present invention, it is possible to reliably grasp the knob portion of the hose band and to detect that the hose band main body has securely tightened the hose from the outer periphery.

It is a top view which shows the preferable example of embodiment in the hose band attachment tool of this invention. FIG. 2 is an operation explanatory view of the hose band attaching tool of FIG. 1, (A) is a diagram showing a state where a pair of pliers main bodies are opened, (B) is a diagram showing a state where a pair of pliers main bodies are closed, (C) is a pliers It is a figure which shows the state which the connection shaft of the connection mechanism slid the slide hole. FIGS. 2A and 2B are operation explanatory views partially enlarged, in which FIG. 2A illustrates a state of the lever switch in FIG. 2A, and FIG. 2B illustrates a state of the lever switch in FIG. FIG. 2C is a diagram illustrating a state of the lever switch in FIG. It is the whole perspective view which shows the specific example of a hose band, (A) is the figure which latches two knob parts of a hose band, and expands the diameter of a main body, (B) is the latching state of two knob parts It is a figure which cancels | releases and is reducing the diameter of a main body. It is a top view which shows the pliers with a load detection mechanism used as a conventional hose band attachment tool. It is operation | movement explanatory drawing which attaches a hose band to a hose with the hose band installation tool of FIG. 5, (A) is a figure by which the hose is inserted in the hose band of an open state, (B) is two knobs of a hose band. The figure of the state hold | gripped, (C) is a figure which has tightened the hose with the hose band closed.

  Hereinafter, an embodiment for carrying out the hose band attaching tool of the present invention will be described with reference to the drawings. As shown in FIG. 1, the hose band attaching tool of the present invention has a main body 11 in which a belt-like member having elasticity is formed in an annular shape, and a radial direction of the diameter of the main body 11 after both ends of the main body 11 intersect. The hose band 10 composed of two knobs 12 and 13 extending at both ends in a bent state toward the two ends against the elastic force of the main body 11. To be attached to the hose H.

  The hose band attaching tool 1 includes a pair of pliers main bodies 2 and 3 formed of a sandwiching portion 2a and 3a and handle portions 2b and 3b extending from the sandwiching portions 2a and 3a. 3 are connected to each other so that the pair of pliers main bodies 2 and 3 are connected to each other at one facing portion thereof, which is provided with a connecting shaft 4 protruding toward the other facing portion. A through-hole 5 that rotatably supports the connecting shaft 4 is formed in the facing portion, and the two clamping portions 2a and 3a are opened and closed with the connecting shaft 4 as a fulcrum according to opening and closing of the two handle portions 2b and 3b. A plier coupling mechanism 6.

  The pair of pliers main bodies 2 and 3 has substantially the same configuration as a commercially available general plier, and includes a holding surface 2c formed on a holding portion 2a of the first pliers main body 2, and a second plier main body 3. According to the opening and closing of the handle portion 2b of the first plier body 2 and the handle portion 3b of the second plier body 3 are connected by the plier connecting mechanism 6 so that the holding surface 3c formed in the holding portion 3a faces each other. Since the two holding portions 2a and 3a are also opened and closed, the two knob portions 12 and 13 of the hose band 10 can be held by the holding surfaces 2c and 3c of the two holding portions 2a and 3a facing each other. The two gripping surfaces 2c and 3c are provided with irregularities that serve as slip stoppers that can prevent the object to be gripped from shifting when gripped.

  The plier coupling mechanism 6 includes two pinching portions 2a, a slide hole 5a that is movable in a state in which the through shaft 4 is fitted, and the two handle portions 2b and 3b are closed by notching the through hole 5. When the two knobs 12, 13 of the hose band 10 are gripped by 3a and the diameter of the main body 11 is expanded to a predetermined size, the connecting shaft 4 slides through the slide hole 5a by the elastic force of the main body 11 of the hose band 10. It is configured to continue. That is, when the two knobs 12 and 13 of the hose band 10 are pinched from the pinch surfaces 2c and 3c of the two clamp parts 2a and 3a, the elastic force of the main body 11 is applied to the two clamp surfaces 2c and 3c. This is because the connecting shaft 4 protruding from one plier body 2 moves toward the slide hole 5a formed in the other plier body 3. The connecting shaft 4 and the slide hole 5a are configured so that the connecting shaft 4 does not slide from the through hole 5 to the slide hole 5a until the diameter of the main body 11 of the hose band 10 is expanded to a predetermined size. ing.

  In addition, the plier coupling mechanism 6 having the above-described configuration is configured so that the two gripping portions 2a and 3a are opened by the slide length of the slide hole 5a, whereby the two knob portions 12 and 13 of the hose band 10 are restored by the elastic force of the main body 11. It can be returned to the position. Therefore, the hose band 10 can tighten the hose H by the elastic force of the main body 11.

  As a specific example of such a plier connection mechanism 6, a portion of the connection shaft 4 that slides through the slide hole 5 a is formed by closing the two handle portions 2 b and 3 b so that the two holding portions 2 a and 3 a When the two knobs 12 and 13 are gripped and the diameter of the main body 11 is expanded to a predetermined size, it is formed in a shape that fits into the slide hole 5a. For example, the value in the width direction of the slide hole 5 a is set to be smaller than the value of the hole diameter of the through hole 5, and the cross-sectional shape of the portion that slides the slide hole 5 a of the connecting shaft 4 is formed in a square shape. In the region where the cross-sectional shape of the connecting shaft 4 is a quadrangle, the length of the diagonal line is set to a value that can slide in the through hole 5, and the length of at least one side of the adjacent side is fitted into the slide hole 5a. It is set to a movable value. Therefore, the slide hole 5a and the part that slides the slide hole 5a of the connecting shaft 4 are configured not to be fitted into the slide hole 5a until the diameter of the main body 11 of the hose band 10 is expanded to a predetermined size. Therefore, the plier coupling mechanism 6 can be operated accurately.

  Moreover, the hose band attachment tool 1 is provided with the detection means 7 which detects the movement, if the connection shaft 4 slides the slide hole 5a. As the detection means 7, for example, a lever switch 71 is preferable. Since the lever switch 71 can control the switch (not shown) by swinging or tilting the lever 71a, the lever switch 71 can be interlocked with the connecting shaft 4 sliding through the slide hole 5a. Here, tilting means tilting to one side and moving. The detection means 7 is not limited to the slide switch 71, but is a push switch that controls the switch by pressing the button with the connecting shaft 4 that slides through the slide hole 5a. Proximity switch that detects using the change of the oscillation frequency and output amplitude due to the change of the capacitor, the pressure sensor that detects the pressure applied by the movement of the connecting shaft 4, or the change in the position of the moving axis caused by the acceleration It can be detected by various switches and sensors such as an acceleration sensor to be measured.

  Such detection means 7 includes a switch (not shown) that transmits a detection signal in accordance with the detection operation of the sensor. A receiver (not shown) that receives a detection signal from the transmitter is disposed in a management room in a production line of an automobile, for example. The transmitter and the receiver are preferably wireless communication capable of omitting wiring, but may be wired communication.

  In addition, the hose band attaching tool 1 is connected to the handle portions 2b and 3b of the pair of pliers main bodies 2 and 3, respectively, and has two handle portions 2b and 3b serving as power points with the connecting shaft 4 as a fulcrum, and two acting points. The elastic means 8 which always opens the clamping parts 2a and 3a is provided. By providing the elastic means 8 in this way, the handle portions 2 b and 3 b of the pair of pliers main bodies 2 and 3 can be forcibly opened by the elastic means 8, so that the connecting shaft 4 is caused by the elastic force of the elastic means 8. It can be forcibly moved in the direction of the through hole 5. Therefore, the connecting shaft 4 can always be positioned in the through hole 5. The elastic means 8 is preferably a torsion coil spring. The torsion coil spring is capable of receiving a torsional load around its axis and transmitting the load transmitted to one arm to the other arm, so that one arm is connected to the handle 2b of one plier body 2, and The other arm is connected to a position where the two handle portions 2b and 3b can always be opened with the connecting shaft 4 of the handle portion 3b of the other plier body 3 as a fulcrum.

  Further, the hose band attaching tool 1 includes two handle portions 2b each having a flexible member 9 that limits the opening angle of the handle portions 2b and 3b of the pair of pliers main bodies 2 and 3 that are forcibly opened by the elastic force of the elastic means 8. 3b. The flexible member 9 is a member that is loose when the two handle portions 2b and 3b are closed, and is stretched when the two handle portions 2b and 3b are opened at a predetermined angle, for example, rubber. A plate is preferred. In the case of this rubber plate, it is straddled between the ends of the two handle portions 2b and 3b. By providing the flexible member 9 in this way, the holding interval between the two holding portions 2a and 3a can be set to a value that allows the two knob portions 12 and 13 of the hose band 10 to be easily picked.

  For example, as shown in FIG. 2, the hose band 10 for mounting the hose H to the upper / hose mounting port or the lower / hose mounting port of the radiator with the hose band mounting tool 1 configured as described above, 11 is formed in a plate shape narrower than the basic width of the main body 11, and one of the portions in the width direction at a position slightly located on the main body 11 side from the knob portion 12. A locking arm portion 14a that is bent toward the substantially radial direction of the main body 11 is formed at the edge portion of the main body 11. Further, the knob 13 is provided with a locking hole 15 into which the knob 12 can be inserted. The locking hole 15 is formed in a staircase shape, the first staircase portion 15a is formed so that the locking arm portion 14a can be inserted therein, and the second staircase portion 15b is inserted so that the locking arm portion 14a cannot be inserted therethrough. Is formed. Note that a wall portion 13a with which the locking arm portion 14a abuts is formed above the second stepped portion 15b in the locking hole 15 of the knob portion 13.

  In the hose band 10 formed in this way, as shown in FIG. 2A, the locking arm portion 14a of the knob portion 12 is inserted into the locking hole 15 of the knob portion 13, and the locking arm portion 14a is The locking hole 15 is positioned on the second stepped portion 15 b side so as to be locked to the wall portion 13 a of the knob portion 13. In this state, the main body 11 of the hose band 10 is maintained at a diameter that allows the hose H to be inserted against the elastic force in the direction of reducing the diameter of the main body 11.

  In order to fix the hose band 10, in which the main body 11 is maintained at a diameter that allows the hose H to be inserted, to the hose H, the locking arm portion 14 a of the knob portion 12 is connected to the second of the locking hole 15 of the knob portion 13. In order to enter the staircase portion 15b side, the two knob portions 12, 13 are held on the surface of the wall portion 13a of the knob portion 13 with the pair of pliers main bodies 2, 3 being held, By releasing the locked state between the portion 14a and the wall portion 13a, the main body 11 of the hose band 10 can tighten the hose H by the elastic force in the direction of reducing the diameter of the main body 11. In addition, the predetermined magnitude | size which expands the diameter of the main body 11 of the hose band 10 shown to FIG. 2 (A) and (B) becomes a magnitude | size for performing this operation | movement.

  The operation of the hose band attaching tool 1 of the present invention configured as described above will be described based on FIGS. 3 (A), (B), (C), and FIGS. 4 (A), (B), (C). The hose band 10 shown in FIGS. 2A and 2B is used. Further, a lever switch 71 is used for the detection means 7. In addition, the plier connection mechanism 6 is set so that the value in the width direction of the slide hole 5a is smaller than the value of the hole diameter of the through hole 5, and the cross-sectional shape of the portion that slides the slide hole 5a of the connection shaft 4 is set. Form a square. When the cross-sectional shape of the connecting shaft 4 is a quadrangle, the diagonal length is set to a value that allows sliding in the through hole 5, and the length of at least one side of the adjacent side is fitted into the slide hole 5a. Set to a movable value. The hose band 10 is assumed to have a hose H inserted in advance.

  In order to tighten the hose H with the hose band 10 through which the hose H is inserted, as shown in FIG. 3A, the pair of pliers main bodies 2 and 3 that are forcibly opened in advance by the elastic force of the elastic means 8 are used. The handle parts 12 and 13 of the hose band 10 are picked by the handle parts 2b and 3b. At this time, the connecting shaft 4 is not in contact with the lever 71 a of the lever switch 71 as shown in FIG.

  Then, as shown in FIG. 3B, by closing the two handle portions 2b and 3b, the two gripping portions 12 and 13 of the hose band 10 are moved by the elastic force of the main body 11 by the two clamping portions 2a and 3a. If it grips against this, the connecting shaft 4 will move, rotating in the direction which fits into the slide hole 5a gradually. At this time, the two knobs 12 and 13 are paired with the pair of pliers main bodies 2 and 3 so that the locking arm part 14a of the knob 12 enters the second stepped part 15b side of the locking hole 15 of the knob 13. In this state, the locking arm portion 14a is shifted on the surface of the wall portion 13a of the knob 13 to release the locking state between the locking arm portion 14a and the wall portion 13a. As shown in FIG. 4B, the connecting shaft 4 is not in contact with the lever 71a of the lever switch 71 even at this time.

  Further, when the two handle portions 2b and 3b are closed and the diameter of the main body 11 of the hose band 10 is expanded to a predetermined size, the connecting shaft 4 is fitted into the slide hole 5a, so as shown in FIG. The connecting shaft 4 slides through the slide hole 5a by the elastic force of the main body 11 of the hose band 10. At this time, as shown in FIG. 4C, the connecting shaft 4 tilts the lever 71a of the lever switch 71, so that the switch is turned on and a detection signal is transmitted from the transmitter. It can be confirmed that the hose band body securely tightens the hose from the outer periphery.

  Thus, the hose band attaching tool 1 of the present invention can directly detect that the hose band 10 has been tightened, and can have a structure without malfunction.

  The hose band 10 is not limited to the one shown in FIG. 2, and the two knobs 12 and 13 can be gripped by the hose band attaching tool 1 and attached to the hose H against the elastic force of the main body 11. Any configuration may be used if possible.

  The hose band attaching tool 1 of the present invention is not limited to the upper / hose attaching port and the lower / hose attaching port of the radiator of the automobile, but an automotive heater, a fuel pump, etc. for tightening the hose band to the hose, an air conditioner, It can also be used for household appliances such as refrigerators.

  Although the present invention has been described with the specific embodiments shown in the drawings, the present invention is not limited to the embodiments shown in the drawings, and is known so far as long as the effects of the present invention are achieved. It goes without saying that any configuration can be adopted.

DESCRIPTION OF SYMBOLS 1 ... Hose band installation tool 2, 3 ... A pair of pliers main body 2a, 3a ... Clamping part 2b, 3b ... Pattern part 4 ... Connection shaft 5 ... Through-hole 5a ... Slide hole 6 ... Plier connection Mechanism 7 …… Detection means 71 …… Lever switch 8 …… Elastic means 9 …… Flexible member

Claims (6)

A main body in which a belt-like member having an elastic force is formed in an annular shape, and two ends of the main body are extended to both ends in a state of being bent in a substantially radial direction of the diameter of the main body after intersecting the two. In a hose band mounting tool for mounting a hose band composed of two knobs on a hose by gripping the two knobs against the elastic force of the main body,
A pair of pliers main bodies formed from a clamping part and a handle part extending from the clamping part;
In order to connect the pair of pliers main bodies in a crossed state, a connection shaft that protrudes toward the other facing portion is provided at one facing portion of the pair of pliers main bodies, and the other A through-hole that rotatably supports the connecting shaft is formed in a facing portion of the pliers, and a plier connecting mechanism that opens and closes the two holding portions with the connecting shaft as a fulcrum according to opening and closing of the two handle portions With
The plier connecting mechanism is configured such that a slide hole movable in a state in which the connecting shaft is fitted is cut out in the through hole, and the two handle parts are closed to thereby close the hose band. The connecting shaft slides through the slide hole by the elastic force of the main body of the hose band when the two knobs of the main body are gripped and the diameter of the main body is expanded to a predetermined size. And
A hose band attachment tool comprising a detecting means for detecting movement of the connecting shaft as it slides through the slide hole.   The portion of the connecting shaft that slides through the slide hole is configured such that the two handle portions are closed by closing the two handle portions so that the two knob portions of the hose band are gripped and the diameter of the main body is 2. The hose band attachment tool according to claim 1, wherein the tool is attached to the slide hole when expanded to a predetermined size.   The hose band attachment tool according to claim 1 or 2, wherein the detection means is a lever switch.   An elastic means connected to each of the handle portions of the pair of pliers main bodies and having the connecting shaft as the fulcrum and always opening the two handle portions and the two holding portions is provided. The hose band attachment tool according to any one of claims 1 to 3.   5. The hose band attachment tool according to claim 4, wherein the elastic means is a torsion coil spring.   The flexible member which restrict | limits the opening angle of the handle part of the said 2 pliers main body forcedly opened with the elastic force of the said elastic means is straddling over the said 2 handle part, or characterized by the above-mentioned. The hose band attachment tool according to claim 5.

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