Tool for turn buckle

Abstract

To provide a small, light and inexpensive tool for a turn buckle, which can be directly attached / detached on a turn buckle trunk.SOLUTION: A tool 1 for a turn buckle comprises: a body case 2; an output spur gear 8 having a through-hole 9 engaged with a turn buckle trunk around a rotation center; a rotation support member 3 that supports the output spur gear 8 so as to be rotatable around the rotation center of the output spur gear 8; an input shaft 11 physically connected to an output shaft of an electric rotary tool and rotatably supported on the body case 2; and a torque transmission mechanism for transmitting torque between the input shaft 11 and the output spur gear 8. The output spur gear 8 is configured to be divisible into two members by a division line reaching the outer edge of the output spur gear 8 from the through-hole 9. The rotation support member 3 is provided with a first member 4 fixed to the body case 2 and a second member 6 configured to be connected to / separated from the first member 4.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a turnbuckle tool for rotating a turnbuckle barrel. [Background technology]

[0002] There is a construction hardware called a bundle that is placed under the floor of a wooden house and transfers the load of the floor surface to the foundation. A bundle equipped with a turnbuckle so that the height can be freely adjusted is known. For example, the bundle described in Patent Document 1 is equipped with a turnbuckle between a base fixed to an installation surface such as a dirt floor or a foundation stone / concrete, and a support fixed to the underside of the building's joists, and is configured so that the height of the support can be freely adjusted.

[0003] The height adjustment of the bundle described in Patent Document 1 must be performed after the bundle is placed under the floor. Therefore, the worker must enter the narrow space under the floor and rotate the turnbuckle body using a wrench in an unnatural position. Operating a wrench in an unnatural position places a large physical burden on the worker, so there is a demand for a turnbuckle tool that can adjust the height of the bundle by rotating the turnbuckle body without relying on the worker's physical strength.

[0004] However, in fields other than the adjustment of the height of the bundle, a turnbuckle tool that can rotate the turnbuckle body without relying on the strength of the worker is already known. For example, Patent Document 2 discloses a turnbuckle tool that rotates a turnbuckle body used to adjust the tension of linear brace steel used in steel frame structures. The turnbuckle tool described in Patent Document 2 includes an input shaft that is engaged with the output shaft of an electric rotary tool, a worm gear fixed to the input shaft, and a worm wheel that meshes with the worm gear. The worm wheel has an opening that is continuous with the center hole and forms one space. The center hole has a shape and dimensions that allow the turnbuckle body to be engaged. Since it is configured in this way, according to the turnbuckle tool described in Patent Document 2, the turnbuckle body can be engaged with the center hole and rotated by the power of the electric rotary tool.

[0005] Patent Document 3 discloses a fastening tool in which a first socket member having an opening into which a fastening part corresponding to a turnbuckle body can be inserted and a second socket member for opening and closing the opening of the first socket member are rotatably supported by a housing. The fastening tool includes a fixing means for fixing the second socket member to the first socket member with the opening of the first socket member closed, and the first and second socket members have engagement portions on their outer peripheries corresponding to the teeth of a spur gear. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2005-163319 A [Patent Document 2] Patent No. 7165364 [Patent Document 3] JP 2002-36133 A Summary of the Invention [Problem to be solved by the invention]

[0007] The turnbuckle tool described in Patent Document 2 introduces a brace steel having a relatively small diameter through an opening into a central hole, and then moves a worm wheel toward the turnbuckle body to fit the turnbuckle body into the central hole.

[0008] In the bundle described in Patent Document 1, the turnbuckle portion 3 corresponds to the turnbuckle body, and the bolt 15 corresponds to the brace steel (FIG. 2). The cross-sectional shape of the tool gripping portion 33 of the turnbuckle portion 3 is smaller than the other portions of the tool gripping portion 33 (FIGS. 3 and 4). In other words, in the bundle described in Patent Document 1, there is a portion between the bolt 15 and the tool gripping portion 33 whose cross-sectional shape is larger than the tool gripping portion 33. Therefore, when the turnbuckle tool described in Patent Document 2 is used to adjust the height of the bundle described in Patent Document 1, the bolt 15 of the bundle cannot be guided to the center hole through the opening of the worm wheel of the turnbuckle tool, and then the tool gripping portion 33 of the bundle cannot be engaged with the center hole of the turnbuckle tool. When the turnbuckle tool described in Patent Document 2 is used to adjust the height of the bundle described in Patent Document 1, it is necessary to enlarge the width of the opening so that the tool gripping portion 33 can be guided to the center hole through the opening.

[0009] However, if the width of the opening is made larger relative to the diameter of the worm wheel, when the opening faces the worm gear, the meshing between the teeth of the worm wheel and the worm gear becomes shallow, and sufficient torque cannot be transmitted. Therefore, when the width of the opening is enlarged, it is necessary to enlarge the diameter of the worm wheel so that the width of the opening does not become larger relative to the diameter of the worm wheel. As a result, the dimensions and weight of the entire turnbuckle tool become large, which makes it difficult to use. Thus, when the turnbuckle tool described in Patent Document 2 is used to adjust the height of the bundle described in Patent Document 1, there is a problem that the dimensions and weight of the turnbuckle tool become large and it becomes difficult to use.

[0010] In the fastening tool described in Patent Document 3, when attaching the fastening tool to the turnbuckle body, it is necessary to first loosen the fixing bolt 34, release the connection between the fixed side socket support arm 29 and the rotating side socket support arm 44, and rotate the rotating side socket support arm 44 around the pin 46 (FIGS. 1 and 7). Then, it is necessary to loosen the fixing bolt 89, release the fixation of the second socket 84 to the first socket 82, and rotate the second socket 84 around the pin 93 (FIGS. 3 and 4). After inserting the turnbuckle W (turnbuckle body) into the opening of the first socket 82, it is necessary to follow the above procedure in reverse to fix the second socket 84 to the first socket 82 and connect the fixed side socket support arm 29 and the rotating side socket support arm 44. As described above, the fastening tool described in Patent Document 3 has a problem that the operation is complicated and time-consuming.

[0011] In addition, the first socket 82 and the second socket 84 are not directly axially supported by the fixed side socket support arm 29 and the rotating side socket support arm 44. A support member 98b is fixed to the first socket 82, and the support member 98b is rotatably supported by the fixed side socket support arm 29. That is, the first socket 82 is rotatably supported by the fixed side socket support arm 29 via the support member 98b. A support member 98a is fixed to the second socket 84, and the support member 98a is rotatably supported by the rotating side socket support arm 44. That is, the second socket 84 is rotatably supported by the rotating side socket support arm 44 via the support member 98a. In addition, a flange 99b that functions as a retainer for the fixed side socket support arm 29 is fixed to the support member 98b. A flange 99a that functions as a retainer for the rotating side socket support arm 44 is fixed to the support member 98a. As described above, the fastening tool described in Patent Document 3 has a problem that it is heavy and expensive because of its complicated structure.

[0012] The present invention has been made in consideration of the above circumstances, and has an object to provide a turnbuckle tool that can be directly attached and detached to a turnbuckle body, and that is small, lightweight, and inexpensive. [Means for solving the problem]

[0013] The turnbuckle tool of the present invention comprises a main body case, an output gear having a through hole at its rotation center into which the turnbuckle body is engaged, a rotational support member that supports the output gear for rotation around the rotation center of the output spur gear, an input shaft that is physically connected to the output shaft of a drive source and rotatably supported by the main body case, and a torque transmission mechanism between the input shaft and the output gear for transmitting torque, wherein the output gear is configured to be divisible into two members by a dividing line extending from the through hole to the outer edge of the output gear, and the rotational support member comprises a first member fixed to the main body case and a second member configured to be detachably connectable to the first member.

[0014] The second member may be supported by the first member so as to be pivotable about a hinge axis parallel to the rotation axis of the output gear.

[0015] The output gear may be made of a magnetic material, and permanent magnets may be fixed to the first and second members at locations facing the output spur gear.

[0016] The torque transmission mechanism may include an input spur gear fixed to the input shaft and rotating together with the input shaft.

[0017] One or more intermediate spur gears may be provided between the input and output gears. Effect of the Invention

[0018] The turnbuckle tool of the present invention can be directly attached to and detached from the turnbuckle body. Also, the turnbuckle tool of the present invention can be configured to be smaller and lighter than conventional products. Therefore, according to the present invention, the efficiency of turnbuckle adjustment work is improved. [Brief description of the drawings]

[0019] [Figure 1]Fig. 1 shows a basic configuration of a turnbuckle tool according to an embodiment of the present invention, in which (A) is a front view of the turnbuckle tool, (B) is a cross-sectional view of the turnbuckle tool cut along the plane indicated by line AA' in (A), and (C) is an arrow view of a gear train provided in the turnbuckle tool as seen from the direction indicated by arrow B in (B). [Diagram 2] 2 is a front view showing a configuration of an output spur gear provided in the turnbuckle tool shown in FIG. 1. [Diagram 3] 2 is a front view showing a state in which a second member of the rotation support member included in the turnbuckle tool shown in FIG. 1 is separated from a first member. FIG. [Figure 4] 2A to 2C are diagrams showing, in chronological order, a procedure for adjusting the height of a bundle using the turnbuckle tool shown in FIG. [Diagram 5] 13(A) and 13(B) are front views showing modified examples of an output spur gear provided in the turnbuckle tool shown in FIG. [Figure 6] 13(A) and 13(B) are front views showing modified examples of the torque transmission mechanism provided in the turnbuckle tool shown in FIG. [Figure 7] 1. FIG. 4 is a front view showing a modified example of a rotation support member provided in the turnbuckle tool shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A turnbuckle tool according to an embodiment of the present invention will now be described in detail with reference to the drawings. In the drawings, the same or equivalent parts are designated by the same reference numerals.

[0021] (Basic configuration) Fig. 1 is a diagram showing a basic configuration of a turnbuckle tool 1 according to an embodiment of the present invention. Fig. 1(A) is a front view of the turnbuckle tool 1. Fig. 1(B) is a cross-sectional view of the turnbuckle tool 1 cut along the plane indicated by line AA' in Fig. 1(A). Fig. 1(C) is an arrow view of a gear train provided in the turnbuckle tool 1 as seen from the direction indicated by arrow B in Fig. 1(B).

[0022] As shown in Figures 1(A) and 1(B), the turnbuckle tool 1 includes a main body case 2. The main body case 2 is a structural component to which components of the turnbuckle tool 1, which will be described later, are directly or indirectly fixed or supported. Note that the main body case 2 is configured by connecting a plurality of components with fastening elements, but the components and fastening elements are not shown in the drawings.

[0023] As shown in Fig. 1(A) and Fig. 1(B), a rotation support member 3 is fixed to a main body case 2. The rotation support member 3 includes a first member 4 directly fixed to the main body case 2, a second member 6 pivotally supported to be freely rotatable with respect to the first member 4 via a hinge 5, and a lever 7 fixed to the second member 6. When using the turnbuckle tool 1, an operator holds the main body case 2 and the lever 7 together and presses the lever 7 against the main body case 2. As a result, the state shown in Fig. 1(A), that is, the state in which the second member 6 abuts against the first member 4, is maintained.

[0024] As shown in Fig. 1(A) and Fig. 1(B), the turnbuckle tool 1 has an output spur gear 8. The output spur gear 8 is an example of an output gear of the present invention, and is rotatably supported by a rotation support member 3. The output spur gear 8 has a through hole 9 at its rotation center. As described later, a turnbuckle body 17e is fitted into the through hole 9. When the output spur gear 8 rotates, the turnbuckle body 17e fitted into the through hole 9 rotates. The hinge axis of the hinge 5 described above is arranged parallel to the rotation axis of the output spur gear 8.

[0025] As shown in Fig. 1(A) and Fig. 1(B), an input shaft 11 is rotatably supported by the main body case 2 via a rotary bearing 10. A fitting hole 12 is formed at one end of the input shaft 11. An output shaft of an electric rotating tool 18 (not shown in each drawing of Fig. 1) is fitted into the fitting hole 12. In other words, the output shaft of the electric rotating tool 18 is physically connected to the input shaft 11 as necessary, and the input shaft 11 is rotationally driven by the electric rotating tool 18. The electric rotating tool 18 is an example of a drive source of the present invention.

[0026] As shown in FIG. 1(B), an input spur gear 13 is fixed to the input shaft 11 and rotates integrally with the input shaft 11. A first intermediate spur gear 14 and a second intermediate spur gear 15 are rotatably supported in the main body case 2 via a rotary bearing 10. A permanent magnet 16 is fitted to the first member 4 and the second member 6 on the side facing the output spur gear 8. The output spur gear is made of a magnetic material. Therefore, the output spur gear 8 is attracted by the permanent magnet 16 and held by the first member 4 and the second member 6.

[0027] As shown in FIG. 1(C), the input spur gear 13 meshes with a first intermediate spur gear 14. The first intermediate spur gear 14 meshes with a second intermediate spur gear 15. The second intermediate spur gear 15 meshes with an output spur gear 8. In this manner, the turnbuckle tool 1 includes a gear train that runs from the input spur gear 13 through the first intermediate spur gear 14 and the second intermediate spur gear 15 to the output spur gear 8. Therefore, when the input shaft 11 is rotationally driven by an electric rotating tool 18 (not shown), the output spur gear 8 rotates. This gear train is an example of a torque transmission mechanism of the present invention.

[0028] Fig. 2 is a plan view showing the configuration of the output spur gear 8 included in the turnbuckle tool 1 shown in Fig. 1. As shown in Fig. 2, the output spur gear 8 is divided into two members 8p and 8q by dividing lines 8a and 8b that extend from the through hole 9 to the outer edge of the output spur gear 8. In the state shown in Fig. 1, the relative displacement of the members 8p and 8q is restricted by the rotation support member 3, so that the members 8p and 8q are rotatably supported by the rotation support member 3 while maintaining a state of abutment with each other, that is, while maintaining the unity of the output spur gear 8. The members 8p and 8q are in surface contact with each other.

[0029] In addition, in both members 8p and 8q, the main body of the output spur gear 8, i.e., the wheel-shaped portion having teeth, and the rotation shaft of the output spur gear 8, i.e., the portion directly supported by the rotation support member 3, are integrally formed. Therefore, the output spur gear 8 having the main body and the rotation shaft is formed simply by abutting the members 8p and 8q against each other. In other words, no members or parts other than the members 8p and 8q are required to form the output spur gear 8. Also, as shown in FIG. 1(B), the output spur gear 8 is supported by the rotation support member 3 at both ends. In other words, in FIG. 1(B), a rotation shaft is formed on both the left and right sides of the main body of the output spur gear 8, and the left and right rotation shafts are supported by the rotation support member 3. Therefore, even if an external force that tilts the output spur gear 8 around an axis perpendicular to the central axis of the rotation shaft is applied to the output spur gear 8, the output spur gear 8 is unlikely to tilt.

[0030] FIG. 3 is a front view showing a state where the second member 6 of the rotation support member 3 included in the turnbuckle tool 1 shown in FIG. 1 is separated from the first member 4. As described above, the second member 6 of the rotation support member 3 is pivotally supported on the first member 4 via the hinge 5. Therefore, when the second member 6 is rotated clockwise around the hinge 5, the second member 6 is separated from the first member 4 as shown in FIG. 3. Also, as described above, a permanent magnet 16 (not shown in FIG. 3) is fitted on the side of the first member 4 and the second member 6 of the rotation support member 3 facing the output spur gear 8. Therefore, in the state shown in FIG. 3, the member 8q of the output spur gear 8 is attracted to the permanent magnet 16 fitted in the first member 4 and held by the first member 4. The member 8p of the output spur gear 8 is attracted to the permanent magnet 16 fitted in the second member 6 and held by the second member 6. Therefore, when the second member 6 is separated from the first member 4, the member 8p of the output spur gear 8 is separated from the member 8q. Therefore, in the state shown in FIG. 3, a turnbuckle body 17e, which will be described later, can be freely attached to and detached from the through hole 9.

[0031] (Action and Effects) Next, the operation of the turnbuckle tool 1 will be described with reference to Fig. 4(A) to (C). Fig. 4(A) to (C) are diagrams showing a chronological order of steps for adjusting the height of the bundle 17 using the turnbuckle tool 1.

[0032] The bundle 17 is a metal member arranged under the floor of a wooden house to support a structural member such as a joist. As shown in FIG. 4(A), the bundle 17 includes a base 17a fixed to an installation surface such as the earthen floor or a foundation stone / concrete foundation of a wooden house (not shown), and a receiving seat 17b fixed to the underside of the joist of the wooden house (not shown). A lower screw shaft 17c is erected on the base 17a, and an upper screw shaft 17d is fixed to the receiving seat 17b and hangs down. The lower screw shaft 17c is formed with a left-handed thread, and the upper screw shaft 17d is formed with a right-handed thread. A turnbuckle body 17e is arranged between the upper screw shaft 17d and the lower screw shaft 17c. The turnbuckle body 17e is a cylindrical member formed with a female thread, and the upper and lower ends of the turnbuckle body 17e are screwed with the upper screw shaft 17d and the lower screw shaft 17c. Because of this configuration, when the turnbuckle body 17e is rotated around its longitudinal axis, the upper screw shaft 17d and the lower screw shaft 17c advance and retreat relative to the turnbuckle body 17e, thereby changing the height of the catch 17b.

[0033] Fig. 4(B) is a diagram showing the turnbuckle tool 1 in the middle of being attached to or detached from the turnbuckle body 17e. In the state shown in Fig. 4(B), the turnbuckle tool 1 is in the state shown in Fig. 3. That is, at this time, the second member 6 of the rotation support member 3 is separated from the first member 4. Therefore, as described above, the turnbuckle body 17e can be inserted into the through hole 9 provided in the member 8p of the output spur gear 8.

[0034] FIG. 4(C) is a diagram showing a state in which the turnbuckle tool 1 is engaged with the turnbuckle body 17e. In the state shown in FIG. 4(C), the turnbuckle tool 1 is in the state shown in FIG. 1(A). That is, at this time, the second member 6 of the rotation support member 3 is in abutment with the first member 4. Therefore, the turnbuckle body 17e is in a state of being engaged with the through hole 9. At this time, as shown in FIG. 4(C), if the output shaft of the electric rotating tool 18 is engaged with the engagement hole 12 (not shown in FIG. 4) of the input shaft 11 (not shown in FIG. 4) of the turnbuckle tool 1, the turnbuckle tool 1 can be rotated by the electric rotating tool 18. The output spur gear 8 can be rotated by the power of the electric rotating tool 18, and the turnbuckle body 17e can be rotated. By rotating the turnbuckle body 17e, the height of the receiving seat 17b can be changed.

[0035] After completing the adjustment of the height of the catch 17b, the electric rotary tool 18 is removed from the turnbuckle tool 1. Then, by returning the state of the turnbuckle tool 1 to the state shown in Fig. 4(B), the turnbuckle tool 1 can be removed from the turnbuckle body 17e.

[0036] As described above, the output spur gear 8 is configured to be divisible into two members 8p and 8q at the dividing lines 8a and 8b extending from the through hole 9 to the outer edge of the output spur gear 8, so that the shape of the output spur gear 8 is restored simply by bringing the divided members 8p and 8q into contact with each other. Since the relative displacement of the members 8p and 8q is restricted by the rotation support member 3, the shape of the output spur gear 8 is maintained simply by supporting the members 8p and 8q on the rotation support member 3. In other words, the members 8p and 8q rotate while being journaled on the rotation support member 3 while maintaining their integrity as the output spur gear 8. Therefore, the turnbuckle tool 1 does not require any means for fixing the members 8p and 8q to each other.

[0037] Moreover, the first member 4 is joined to the second member 6 simply by an operator gripping the main body case 2 and the lever 7 together and pressing the lever 7 against the main body case 2. Therefore, the turnbuckle tool 1 does not require a means for fixing the first member 4 to the second member 6.

[0038] As described above, the turnbuckle tool 1 can easily attach to and detach from the turnbuckle body 17e. Moreover, since the output spur gear 8 always meshes with the second intermediate spur gear 15 regardless of its rotation angle, stable torque transmission is performed between the second intermediate spur gear 15 and the output spur gear 8. Therefore, the turnbuckle tool 1 can easily adjust the height of the bundle 17, improving work efficiency.

[0039] (Modification of output spur gear) In the above, an example was shown in which the output spur gear 8 is divided by its diameter, and the members 8p and 8q are the same size and shape, but the output spur gear 8 is not limited to this. For example, as shown in Fig. 5(A), the output spur gear 8 may be divided asymmetrically. Alternatively, as shown in Fig. 5(B), a convex portion may be formed on the member 8p and a concave portion may be formed on the member 8q, and the convex portion and the concave portion may be fitted together.

[0040] (Modification of Torque Transmission Mechanism) In the above, a gear train is shown in Fig. 1(C) as an example of the torque transmission mechanism of the turnbuckle tool 1, but the torque transmission mechanism is not limited to the gear train shown in Fig. 1(C). For example, as shown in Fig. 6(A), the input spur gear 13 may be directly meshed with the output spur gear 8. Alternatively, as shown in Fig. 6(B), a worm gear 19 may be fixed to the input shaft 11, and the worm gear 19 may be directly meshed with the output spur gear 8.

[0041] (Modification of Rotational Support Member) FIG. 7 is a front view showing a modified example of the rotation support member 3 provided in the turnbuckle tool 1. In the above, an example in which the second member 6 of the rotation support member 3 is pivotally supported to the first member 4 via the hinge 5 has been shown. Also, an example in which the lever 7 is fixed to the second member 6 has been shown. However, the rotation support member 3 is not limited to one having the hinge 5 or the lever 7. As long as the rotation support member 3 is configured so that the first member 4 and the second member 6 can be separated and connected to each other, it is sufficient, and various modifications are possible. For example, as shown in FIG. 7, the first member 4 and the second member 6 may be configured to be completely separated from each other. Then, an appropriate fastening means 20 may be provided so that the first member 4 and the second member 6 are connected to each other as necessary. The specific configuration of the fastening means 20 is not particularly limited. Various known means can be selected arbitrarily. For example, the fastening means 20 may include a claw member that is biased by a spring to engage with a mating member, and a member that transmits an external force applied by an operator to the claw member, thereby displacing the claw member in a direction that releases the engagement.

[0042] (supplement) Although the configuration, operation, and effects of the turnbuckle tool 1 according to the present invention have been described above, the technical scope of the present invention is not limited by the above description. The present invention can be freely applied, modified, or improved within the scope of the technical ideas described in the claims.

[0043] For example, in the above, an example was given in which the turnbuckle tool 1 was used to adjust the height of the bundle 17, but the use of the turnbuckle tool according to the present invention is not limited to adjusting the height of a bundle having turnbuckles. The turnbuckles that the turnbuckle tool according to the present invention operates are not limited to those attached to a bundle. The turnbuckle tool according to the present invention operates a wide variety of turnbuckles and turnbuckles attached to a wide variety of items.

[0044] In the above, an example was shown in which the output spur gear 8 has a substantially rectangular through hole 9, but the output gear according to the present invention is not limited to one having a substantially rectangular through hole. The through hole is determined according to the shape of the turnbuckle barrel to be operated. Alternatively, a plurality of output gears each adapted to a plurality of turnbuckle barrels having different dimensions and shapes may be provided, and the output gear may be replaced as necessary.

[0045] In the above, it has been explained that the output spur gear 8 can be divided into two members 8p, 8q by dividing lines 8a, 8b that extend from the through hole 9 to the outer edge of the output spur gear 8, but this explanation is for explaining the shapes of the output spur gear 8 and the members 8p, 8q, and does not limit the manufacturing process of the output spur gear 8 and the members 8p, 8q. In other words, the members 8p, 8q are not limited to being manufactured by cutting the completed output spur gear 8 that has been machined from a single material. The members 8p, 8q may each be machined from a separate material.

[0046] In the above, an example was given in which the rotation support member 3 covers the outer edge of the output spur gear 8, and the teeth of the output spur gear 8 are not visible in the state shown in Fig. 1(A), but the turnbuckle tool according to the present invention is not limited to one in which the teeth of the output gear are covered by the rotation support member. The teeth of the output gear may be exposed to the outside of the rotation support member. In short, it is sufficient for the rotation support member to be a member that rotatably supports the output gear.

[0047] Although three specific examples of the torque transmission mechanism have been given above, the torque transmission mechanism of the turnbuckle tool according to the present invention is not limited to these, and various torque transmission mechanisms can be selected arbitrarily.

[0048] In addition, in the above, the output spur gear 8 is shown as a specific example of the output gear, but the output gear is not limited to one having a spur gear. For example, it may be one having a bevel gear. In this case, a bevel gear can be provided on the input shaft, and the bevel gear can be meshed with the output gear. In other words, a torque transmission mechanism can be configured by combining bevel gears.

[0049] In addition, in the above, the electric rotating tool 18 is shown as a specific example of the driving source, but the driving source is not limited to one that uses electricity as a power source. The driving source may be one that uses air pressure or other power sources. The driving source is not limited to a device that is external to the turnbuckle tool 1, such as the electric rotating tool 18, and is coupled to the turnbuckle tool 1 as needed. The driving source may be a device fixed inside the turnbuckle tool 1. [Explanation of symbols]

[0050] 1 Turnbuckle tool, 2 Main body case, 3 Rotation support member, 4 First member, 5 Hinge, 6 Second member, 7 Lever, 8 Output spur gear, 8a, 8b Parting line, 8p, 8q Members, 9 Through hole, 10 Rotation bearing, 11 Input shaft, 12 Fitting hole, 13 Input spur gear, 14 First intermediate spur gear, 15 Second intermediate spur gear, 16 Permanent magnet, 17 Bundle, 17a Base, 17b Receiver, 17c Lower screw shaft, 17d Upper screw shaft, 17e Turnbuckle body, 18 Electric rotating tool, 19 Worm gear, 20 Fastening means

Claims

1. The main body case, An output gear having a through hole at its rotation center into which the turnbuckle body is fitted; a rotation support member that supports the output gear rotatably around a rotation center of the output gear; an input shaft that is physically connected to an output shaft of a drive source and is rotatably supported by the main body case; a torque transmission mechanism disposed between the input shaft and the output gear for transmitting torque; the output gear is configured to be separable into two members along a dividing line extending from the through hole to an outer edge of the output gear, The rotation support member includes a first member fixed to the main body case, and a second member configured to be detachably coupled to the first member. Turnbuckle tool.

2. The second member is supported by the first member so as to be swingable around a hinge axis parallel to the rotation axis of the output gear. The turnbuckle tool according to claim 1.

3. The output gear is made of a magnetic material, A permanent magnet is fixed to a portion of the first member and the second member facing the output gear. The turnbuckle tool according to claim 1 or 2.

4. The torque transmission mechanism includes an input spur gear fixed to the input shaft and rotating together with the input shaft. The turnbuckle tool according to claim 1 or 2.

5. A single or multiple intermediate spur gears are provided between the input gear and the output gear. The turnbuckle tool according to claim 4.

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