JPH07119799A - Wire strainer - Google Patents

Abstract

PURPOSE:To eliminate the twisting of a wire following a tensing operation, by preventing the rotation of a screw body pulled back by a turnbuckle screw, together with other parts, in a wire tension grip using a turnbuckle as a tensing element. CONSTITUTION:An operating screw body 15 having a right side screw 21 and a left side screw 22 is provided. A pair of driven screw bodies 16 and 17 are screwed and connected to the operating screw body 15. A regulating body 18 is provided between the pair of driven screw bodies 16 and 17. The movement of the operating screw body 15 in the axial direction is regulated by a stopper 30 provided to the regulating body 18. The regulating body 18 and the driven screw bodies 16 and 17 are connected to prevent the relative rotation of them by grooves 23 and a projections 31 inserted to the grooves 23. A wire connector 3 is provided to one side driven screw body 16, while the other side driven screw body 17 is fixed to a floor or a wall through an installing fixture 25.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire tensioning tool for tensioning a wire, and more particularly to a wire tensioning tool using a screw as a tensioning element.

[0002]

2. Description of the Related Art A tensioning device of this type has an actual opening of 2-10736.
No. 3, there is disclosed a method in which a male and female screw provided on a pair of ball chucks is tightened and loosened to tension or loosen the wire. Japanese Utility Model Publication No. 1-42684, Japanese Utility Model Publication 1-
No. 29555 and Japanese Utility Model Laid-Open No. 3-55761,
A tensioning tool having a turnbuckle as a tensioning element is disclosed, and a ball chuck is connected to one end of the turnbuckle, and a mounting tool including a hook, a ring and the like is screwed and connected to the other end.

[0003]

In the tightening tool for tightening the screw to tighten the wire, the twisting of the wire becomes a problem. For example, in the tensioning tool disclosed in Japanese Utility Model Laid-Open No. 2-107363, the wire is tightened by tightening a pair of ball chucks having male and female screws in an approaching direction to tighten the wire. Since the force also increases, the rotational force cannot be slipped and released, and the wire is twisted in the screwing direction of each ball chuck. The wire twisted by the tensioning operation generates a restoring force in the direction of returning to the free state, so that the tensioning screw is easily loosened.

In the tensioning tool having a turnbuckle as a tensioning element, in addition to the wire being twisted, there is a problem that a ball chuck screwed into one end of the turnbuckle is rotated. As the tension of the wire increases, the frictional resistance of the connecting screw portion of the turnbuckle and the ball chuck increases, and the ball chuck and the turnbuckle cannot rotate relative to each other. In order to prevent this, the ball chuck may be fixedly held in a non-rotatable manner and the turnbuckle may be screwed in, but the operation becomes troublesome.

In the case of a tensioning tool in which ball chucks are screwed and connected to both ends of the turnbuckle, it becomes more difficult to operate the turnbuckle to tension the wire.
This is because each of the ball chucks has a tendency to rotate together with the turnbuckle, so that the pair of ball chucks must be fixed and held so as not to rotate at the same time.

An object of the present invention is to provide a wire tensioning device that can be tensioned without twisting and deforming the wire. Another object of the present invention is to secure a wire tensioning operation in a wire tensioning tool having a turnbuckle as a tensioning element by eliminating rotation of a wire connector attached to one end or both ends thereof together with the turnbuckle. In addition, it will be done promptly. Another object of the present invention is to provide a wire tensioner that is easy to process and can be manufactured at a lower cost.

[0007]

In the wire tensioning tool of the present invention, an operating screw body 15 having a right-hand thread 21 formed at one end and a left-hand thread 22 formed at the other end, and a right-hand thread 21 and a left-hand thread 22. Is provided with a pair of driven screw bodies 16 and 17 which are respectively screwed and connected to each other. The driven screw bodies 16 and 17 are provided with the wire connector 3 or the attachment 25. The operating screw body 15 is a regulating body 18 provided between the driven screw bodies 16 and 17.
The stopper portion 30 restricts the movement in the axial direction so as not to move. The regulating body 18 and the driven screw bodies 16 and 17 are
The groove 23 and the projection 31 are provided so as to be relatively movable along the central axis of the screw, and are connected so as not to rotate relative to each other. Specifically, the operation screw body 15 is formed in a shaft shape, and both driven screw bodies 16 are formed.
・ 17 is formed in a cylindrical shaft shape. A groove 23 parallel to the screw center axis is formed on the outer surface of each driven screw body 16/17. A protrusion 31 that engages with the groove 23 is provided on the restriction body 18.

A wire tightening tool according to a third aspect of the present invention includes an operating screw body 15 and a driven screw body 16 which are screwed and connected to each other.
And a regulation body 18 that supports them. The operation screw body 15 is supported by the stopper portion 30 provided on the regulation body 18 so as to be immovably in the axial direction. The driven screw body 16 and the regulating body 18 are formed in the groove 2 which is relatively movable along the screw center axis.
3 and the protrusion 31 are connected so that they cannot rotate relative to each other. The wire connector 3 is provided on the driven screw body 16.

In the wire tensioning tool according to a fourth aspect of the present invention, an operating screw body 15 having a female screw of a right screw 21 formed at one end and a female screw of a left screw 22 at the other end, and a right screw 21 and a left screw 22. And a pair of driven screw bodies 16 and 17 which are respectively screwed and connected to the driven screw bodies 16 and 1.
7 is provided with a wire connector 3 or a fixture 25. The operation screw body 15 is axially immovably regulated by a stopper portion 30 of a regulation body 18 provided between the driven screw bodies 16 and 17. Each of the driven screw bodies 16 and 17 is formed of a screw shaft having a non-circular cross section having at least one flat surface 39 along the longitudinal direction of the peripheral surface. Both the driven screw bodies 16 and
A non-circular engagement hole 38 is formed which is fitted to the outer peripheral surface 17 so as to be relatively movable and contacts the flat surface 39 to prevent both driven screws 16 and 17 from being rotated together. The wire tightening tool according to claim 5 includes an operating screw body 15 having a female screw, a driven screw body 16 including a screw shaft having a non-circular cross section having at least one flat surface 39 along the longitudinal direction of the circumferential surface, and these. And a regulation body 18 that supports the. A non-circular engagement member that is fitted to an end wall 28 provided at one end of the restricting body 18 so as to be relatively movable with respect to the driven screw body 16 and contacts the flat surface 39 to prevent the driven screw body 16 from rotating together. A dowel hole 38 is formed. The driven screw bodies 16 and 17 are formed by screw shafts having a polygonal cross section.

[0010]

The operation screw body 15 is restricted in movement by the restriction body 18 and cannot move in the axial direction, but can freely rotate at that position. The driven screw bodies 16 and 17 cannot rotate because they are restricted in rotation by the restriction body 18, but they can move in the axial direction. Therefore, when the operation screw body 15 is screwed in, the driven screw body 16
It is possible to prevent the wire 17 and the wire connector 3 from rotating together. Since the driven screw bodies 16 and 17 and the wire connector 3 are not rotated together, the wire W is not twisted.

According to a mode (claims 4 to 6) in which the driven screw members 16 and 17 are formed of screw shafts having a non-circular cross section and the flat surface 39 of the peripheral surface is used to prevent entrainment. The driven screw bodies 16 and 17 can be processed more easily than in the case where the grooves 23 are formed in the bodies 16 and 17 or the protrusions 31 are formed. Driven screw body 1 using a rod with a polygonal cross section
When forming 6 and 17, the processing can be performed more easily.

[0012]

According to the wire tensioning tool of the present invention, the driven screw body 16 connected to the wire W is regulated to rotate by the regulating body 18 so that only the axial movement required for the tensioning of the wire W is permitted. Therefore, when the wire W is tensioned, the operation screw body 1
The twisting in the screwing direction of 5 can be eliminated. As a result, the twisting reaction force is stored in the wire W during the tension operation,
It is possible to eliminate the tension screw from loosening due to the action of the twisting reaction force. Since the twisting reaction force does not act, the tension operation force can be reduced accordingly. In a wire tightening tool having a turnbuckle as a tensioning element, when the operating screw body 15 is tightened and loosened, the follower screw bodies 16 and 17 and the wire connecting tool 3 such as a ball chuck provided on them are controlled by the restricting body 18. Since it can be prevented, the wire W is tensioned surely and quickly,
Alternatively, it can be relaxed, and the work of stretching and removing the wire W can be performed efficiently.

The driven screw bodies 16 and 17 are formed by a screw shaft having a non-circular cross section having a flat surface 39 extending in the longitudinal direction, and an engaging hole 38 for preventing rotation is formed in the end wall 28 of the regulating body 18. According to the wire tensioning tool, the driven screw shafts 16 and 17 are different from the driven screw shafts 16 and 17 in comparison with the configuration in which the entrainment of the groove 23 and the protrusion 31 prevents the accompanying rotation.
Can be processed more easily, and the wire tightening tool can be manufactured at a lower cost accordingly. Especially, the driven screw body 1 with a polygonal screw shaft
When forming 6/17, a bar material having a polygonal cross section can be used as a forming material thereof, so that the manufacturing cost can be further reduced. When screwing the operation screw body 15,
This is also advantageous in that the contact area between the driven screw bodies 16 and 17 and the regulation body 18 can be increased to prevent deformation of the contact portions.

[0014]

【Example】

(Embodiment 1) FIGS. 1 to 4 show an embodiment in which the wire tightening device according to claims 1 and 2 of the present invention is applied to a forehead hanger for suspending and supporting a forehead and a poster panel. In FIG. 2, the forehead hanger includes a curtain rail-shaped guide frame 1 fixed to an upper portion of a wall surface, a hook 2 fixed to the guide frame 1, and a wire W hanging from the hook 2.
The wire connecting tool 3 and the wire tightening tool 4 are provided to stretch the wire without sagging. A ball chuck 5 with a hook that is vertically movable along the wire W is arranged between the hook 2 and the wire connector 3, and a forehead 6, for example, is hung on the ball chuck 5 with a hook.

In FIG. 1, the wire connector 3 comprises a ball chuck, which comprises a case 8, a holder 9, a steel ball 10 held in the holder 9, a plug 11 screwed and fixed to the case 8, And a spring 12 provided between the inner bottom of the case and the holder 9. The holder 9 is constantly urged to move upward by the spring 12, and the ball 10 inside the holder 9 is urged by the tapered wall 13.
The wire W is clamped by being pushed by. When the holder 9 is pushed into the case 8 against the spring 12, the clamped state can be released. A screw shaft 14 for connection is integrally provided at the lower end of the case 8.

In FIG. 3, the wire tensioning device 4 has a turnbuckle as a tensioning element, and the turnbuckle is constituted by three members, an operating screw body 15 and a pair of driven screw bodies 16 and 17 screwed into the operating screw body 15, These are supported by the regulation body 18. The operation screw body 15 has screw shafts 21a and 22 vertically
and a large-diameter operating portion 20 between the upper and lower screw shafts 21a and 22a. The upper screw shaft 21a is formed by the right screw 21, and the lower screw shaft 22a is formed by the left screw 22.

The pair of driven screw members 16 and 17 are formed of a cylindrical body, and a groove 23 parallel to the screw center axis is formed on each of the opposing peripheral surfaces. A right-hand thread 21 is provided on the inner surface of the upper driven screw body 16.
A threaded hole 16a corresponding to the
A threaded hole 17 a corresponding to the left-hand thread 22 is formed on the inner surface of 7. As shown in FIG. 1, the screw shaft 14 of the wire connector 3 is screwed and connected by utilizing the screw hole 16 a of the upper driven screw body 16. The lower driven screw body 17 is fixed to the floor surface via a fixture 25 connected to the lower end of the driven screw body 17 by a pin 24.

The restricting body 18 is formed by press-molding a metal plate material, and has a vertically long main frame wall 27 and end walls 28 which are continuous with the upper and lower ends of the main frame wall 27. On the plate surface of the main frame wall 27,
An opening 29 for assembling the operating screw body 15 and both driven screw bodies 16 and 17 is punched out along the entire length in the vertical direction, and a stopper portion 30 into which the operating portion 20 of the operating screw body 15 is fitted in the central portion in the vertical direction of the opening 29. Are formed wider than others. The upper and lower end walls 28 are formed in an arch shape, and connect the main frame walls 27, which are divided into left and right by an opening 29. The driven screw body 1 is provided with a pair of end edge walls that sandwich the opening 29 on the left and right.
It is used for the detent 31 of 6 and 17.

The operating screw body 15 is assembled to the regulating body 18 in a state where the operating portion 20 is contained in the stopper portion 30, and the upper and lower driven screw bodies 16 and 17 are in a state in which the respective grooves 23 are engaged with the projections 31. Insert from the top and bottom of the regulator 18,
Further, the operation screw body 15 is screwed in to operate each screw shaft 2
By screwing 1a and 22a into the screw holes 16a and 17a, respectively, the operation screw body 15 and the upper and lower driven screw bodies 16 and 1
7 and the regulation body 18 are integrated. In this assembled state, as shown in FIG. 1, the upper and lower end surfaces of the operating portion 20 are received and supported by one of the upper and lower end surfaces of the stopper portion 30, so that the operating screw body 15 is restricted from moving up and down and is only rotatable. You can do it. Upper and lower driven screw body 16
・ 17 is a projection 3 in each groove 23 as shown in FIG.
Since 1 is engaged, it cannot rotate, but it can move relative to the operating screw body 15 and the regulating body 18 in the vertical direction.

Explaining how to use the wire tightening tool 4, it is assumed that the wire tightening tool 4 is fixed to the floor surface in advance according to the position where the wire W is stretched. In this state, the operating screw body 15 is operated to move the upper and lower driven screw bodies 16 and 17 in a direction to separate from each other, and a sufficient pulling dimension of both driven screw bodies 16 and 17 is secured. Next, the holder 9 is pushed into the case 8, the lower end of the wire W is inserted into the vertical hole, and the holder 9 is returned and projected while the slack of the whole is almost removed, and the wire W is clamped. The wire W is previously cut into an appropriate length in relation to the position of the wire tensioning tool 4.

Subsequently, the operating screw body 15 is screwed in to move the upper and lower driven screw bodies 16 and 17 in the approaching direction. Actually, the driven screw body 17 on the lower side is the fixture 25.
Since it is fixed to the floor surface via the, the operating screw body 15 approaches the driven screw body 17, and the driven screw body 16 above further approaches the driven screw body 17 by the screwing amount. In this way, when the operation screw body 15 is screwed in by a predetermined amount, the wire W can be stretched while being sufficiently tensioned. When the operation screw body 15 is screwed in, the upper driven screw body 16 tends to rotate together. However, the driven screw body 16 is prevented from rotating by the regulation body 18, and
Since 8 is connected to the driven screw body 17 fixed to the floor surface in a non-rotatable state, the driven screw body 16 and the wire connector 3 do not rotate together in the screwing direction, and the wire W does not rotate in the screwing direction. There is no twist.

(Embodiment 2) As shown in FIG. 5, the wire tensioning tool 4 has a wire connecting tool 3 attached to each of a pair of driven screw members 16 and 17, for example, a wire whose upper end is fixed to the ceiling side. It can also be used when connecting W and a pair of wires W whose lower ends are fixed to the floor side to make them tight. In this case,
Since the wire tightening tool 4 is supported by the pair of wires W via the wire connecting tool 3, the restricting body 18 is fixedly held so as not to rotate, and the operation screw body 15 is screwed.

(Embodiment 3) FIG. 6 shows an embodiment in which the wire tightening tool 4 according to claim 3 of the present invention is applied to a forehead hanger. In this case, the wire tightening tool 4 is the operating screw body 1.
5 so that the wire W can be tensioned with the driven screw body 16 and
This is a partial modification of the wire tensioning tool 4 of the first embodiment.
The wire tightening tool 4 includes a pair of male and female operation screw bodies 15 and a driven screw body 16 and a restricting body 18 that supports them. The operation screw body 15 is integrally provided with an operation portion 20 having a larger diameter than the lower end of the screw shaft 21a. The driven screw body 16 is formed of a cylindrical body, and a screw hole 16a that engages with the screw shaft 21a is provided on the inner surface thereof, and a groove 23 parallel to the screw center axis is formed on the opposite peripheral surface.
To form.

The restricting body 18 has a vertically long main frame wall 27. An arch-shaped end wall 28 is integrally bent at the upper end of the main frame wall 27. The mounting portion 33 is integrally bent under the main frame wall 27. The plate surface of the main frame wall 27 is formed with an opening 29 for incorporating both screw bodies 15 and 16, and the stopper portion 3 into which the operation portion 20 of the operation screw body 15 is fitted at the lower end of the opening 29.
0 is set. A pair of edge walls that sandwich the opening 29 on the left and right sides are used as protrusions 31 for preventing rotation.

The operating screw body 15 is fitted into the opening 29 and the stopper portion 30, the driven screw body 16 is assembled to the regulating body 18 with the groove 23 thereof engaging the projection 31, and the screw shaft 21a of the operating screw body 15 is screwed. By screwing into the hole 16a, the three screw bodies 15 and 16 and the restricting body 18 are integrated. The wire connector 3 made of a ball chuck is screwed and fixed to the upper end of the driven screw body 16. The mounting portion 33 of the regulation body 18 is screwed to the wall surface.

According to this wire tightening tool 4, after the wire W is clamped by the wire connecting tool 3, the operating screw body 15 is screwed in to move the driven screw body 16 downward so that the wire W is sufficiently strained. Can be made. At this time, since the driven screw body 16 is held by the regulating body 18 so as not to rotate, the driven screw body 16 does not rotate by the screwing operation of the operation screw body 16, and therefore the wire W can be prevented from being twisted.

FIG. 7A shows another embodiment in which the wire tightening tool 4 according to the second embodiment is modified. This wire tightening tool 4
Forms the operation screw body 15 with a female screw, and forms the right screw 21 and the left screw 22 formed of the female screw on the inner surface thereof. Correspondingly, each of the driven screw bodies 16 and 17 is formed by a male screw, and a groove 23 for preventing rotation is provided on the peripheral surface of each shaft portion. The protrusions 31 that engage with the grooves 23 are provided on the upper and lower end walls 28 of the restricting body 18, respectively. End wall 28 ・ 28
Also serves as the stopper portion 30, receives the upper and lower end surfaces of the operating screw body 15 and prevents its vertical movement.
The driven screw bodies 16 and 17 are formed integrally with the case 8 of the ball chuck.

FIG. 7B shows another embodiment in which the wire tightening tool 4 according to the third embodiment is modified. This wire tightening tool 4
Forms the operating screw body 15 with a female screw, and drives the driven screw body 16
Is formed with a male screw. Groove 2 to prevent rotation on the peripheral surface of the screw shaft
3 is provided, and a projection 31 that engages with the groove 23 is provided on the end wall 28 of the regulation body 18. The restricting body 18 includes a pair of mounting arms 35.3.
5, the upper ends of both mounting arms 35 are connected by the end wall 28. Shaft insertion holes 36, 36 for pivotally supporting the restricting body 18 on a floor surface or a wall surface are provided at the lower ends of the mounting arms 35, 35.

(Embodiment 4) FIGS. 8 and 9 show an embodiment of a wire tensioning tool 4 according to claim 4 of the present invention. In FIG. 8, the wire tightening tool 4 forms a turnbuckle with three members, that is, an operating screw body 15 formed by a cylindrical shaft and a pair of upper and lower driven screw bodies 16 and 17 screwed into the operating screw body 15,
The wire tensioning device 3 composed of a ball chuck is attached to each of the driven screw bodies 16 and 17, and the driven screw bodies 16 and 1
A regulating body 18 is provided between the seven members to prevent them from going around together.

A right screw 21 made of a female screw is formed on one side of the inner surface of the operating screw body 15, and a left screw 22 made of a female screw is formed on the other side. Knurling is applied to the peripheral surface of the cylinder shaft to prevent slipping. The restricting body 18 is made of a press-formed product of a metal plate material, and includes a vertically long main frame wall 27 and circular end walls 28 that are continuously bent at the upper and lower ends of the main frame wall 27 in an orthogonal shape. A square engagement hole 38 is provided in each of the 28. The facing interval between the upper and lower end walls 28 is set to be slightly larger than the vertical length of the operating screw body 15, and the end wall 28 also serves as the stopper portion 30.

In FIG. 9, each of the driven screw bodies 16 and 17 is composed of a screw shaft made of a bar material having a quadrangular cross section, and the male screw of the upper driven screw body 16 is formed by a right screw and the driven screw of the lower side is formed. The male thread of the screw body 17 is formed by a left-hand thread. By forming both driven screw bodies 16 and 17 with a screw shaft having a quadrangular cross section, a screw thread is formed along the ridge portion of the screw shaft, and four flat surfaces along the longitudinal direction are formed on the circumferential surface between the ridge portions. Three
9 is formed. The engagement hole 38 is formed in the driven screw 16
-It is formed as a rectangular hole slightly larger than the cross-sectional shape of 17. Therefore, the driven screw bodies 16 and 17 are allowed to move in the axial direction, but the rotational movement of both driven bodies 16 and 17 is blocked. More specifically, when the two screw bodies 16 and 17 are about to rotate, the flat surfaces 39 are received by the engaging holes 38 to prevent the accompanying rotation. A threaded portion 40 is formed at one end of each of the driven screw bodies 16 and 17 (see FIG. 8), and these are screwed into the bottom of the case 8 to be integrated with the wire connector 3. Others are similar to those of the previous embodiment.

As described above, when the driven screw bodies 16 and 17 are formed by the screw shafts having a quadrangular cross section, compared with the case where the groove 23 is formed in the screw shaft having a circular cross section to prevent the driven screw bodies 16 from rotating.・ 17 can be easily processed and its processing cost can be reduced. Compared with the restricting body 18 shown in FIGS. 1 to 6, it is also advantageous in that the restricting body 18 is prevented from becoming large and bulky and the wire tensioning tool 4 can be made compact. In addition,
Instead of the lower wire connecting device 3 in this embodiment, the attachment 25 shown in the first embodiment can be connected to the lower driven screw body 17 for implementation.

(Fifth Embodiment) FIG. 10 shows a fifth embodiment in which a part of the wire tensioning tool 4 of FIG. 7B is modified. Here, the operating screw body 15 is formed of a female screw body, and the driven screw body 16 is formed of a screw shaft having a quadrangular cross section. The rectangular engaging hole 38 corresponding to the driven screw body 16 is formed in the end wall 2 of the regulating body 18.
8, the flat surface 39 is received by the engaging hole 38, and the driven screw body 16 is prevented from rotating together with the operating screw body 15. The other parts are configured in the same manner as the previous embodiment.

Driven screw body 1 applied to Examples 4 and 5
6 and 17 and the engagement hole 38 can be changed as shown in FIGS. 11 (a) and 11 (b) respectively show a screw shaft having a circular cross section as a basic shape, the former having a flat surface 39 on a part of the peripheral surface, and the latter having a flat surface at two positions on the peripheral surface. 39 is formed. The latter two flat surfaces 39 do not necessarily have to be provided in parallel, but can be formed at different positions on the peripheral surface of the shaft portion with different widths. The driven screw bodies 16 and 17 shown in FIG. 11C are formed of rods having a triangular cross section, each ridge is provided with a thread, and a flat surface 39 is provided between the ridges. As can be understood from the above-described modified embodiment, the driven screw bodies 16 and 17 may have a tunnel cross section or an oval cross section, in addition to the polygon cross section. The shape of the engagement hole 38 is such that each driven screw body 16.1.
It is not necessary to match the cross-sectional shape of No. 7 and, for example, when the driven screw bodies 16 and 17 have a quadrangular cross-section, the engaging hole 38 can be formed in an integral multiple polygon so as to have an octagonal cross-section.
The flat surface 39 can be formed by a gentle projected arc surface or a concave arc surface.

In each of the embodiments shown in FIGS. 1 to 7, the driven screw members 16 and 17 are provided with the groove 23 and the regulating member 18 is provided with the projection 31. However, the groove is provided on the regulating member 18 side and each screw member is provided. 16.
A protrusion can be provided on the side of 17. The groove 23 may be formed only at one peripheral surface of each of the screw bodies 16 and 17. As the wire connecting tool 3, hooks, rings, and the like can be applied in addition to the ball chuck, and all the connecting tools fixed to the wire end are included. Further, the upper and lower driven screw bodies 16 and 17 and the case 8 may be integrally formed. The form of the attachment 25 should be changed according to the attachment position of the wire tightening tool 4, and is not limited to the structure shown in the embodiment.

[Brief description of drawings]

FIG. 1 is a front view of a wire tightening tool.

FIG. 2 is a side view of the forehead hanger.

FIG. 3 is an exploded perspective view of a wire tightening device.

4 is a cross-sectional view taken along the line AA in FIG.

FIG. 5 is a front view in which the usage pattern of the wire tightening tool is changed.

FIG. 6 is a perspective view of a wire tightening tool according to a third embodiment.

7 (a) and 7 (b) respectively show another embodiment of the wire tightening tool, and FIG. 7 (a) is a perspective view and FIG.
(B) is an exploded perspective view.

FIG. 8 is a front view of the wire tightening tool according to the fourth embodiment.

9 is a sectional view taken along line BB in FIG.

FIG. 10 is an exploded perspective view of a wire tightening tool according to a fifth embodiment.

11 (a) to 11 (c) are sectional views showing another embodiment of the driven screw body.

[Explanation of symbols]

 3 wire connecting tool 4 wire tensioning tool 15 operation screw body 16/17 driven screw body 18 regulating body 21 right-hand screw 22 left-hand screw 23 groove 25 mounting tool 31 protrusion W wire

Claims (6)

[Claims] 1. An operating screw body 15 having a right-hand screw 21 formed at one end and a left-hand screw 22 at the other end, and a pair of driven screw bodies 16 screwed into and connected to the right-hand screw 21 and the left-hand screw 22, respectively. .17, and each of the driven screw members 16 and 17 is provided with a wire connector 3 or a fixture 2.
5 is a wire tensioning tool in which the operation screw body 15 is axially immovably restricted by the stopper portion 30 of the restricting body 18 provided between the driven screw bodies 16 and 17. A wire tensioning tool in which the body 18 and the driven screw bodies 16 and 17 are connected to each other via a groove 23 and a protrusion 31 which are provided so as to be relatively movable along the screw center axis, and cannot rotate relative to each other. 2. The operating screw body 15 is formed in a shaft shape, and both driven screw bodies 16 and 17 are formed in a cylindrical shaft shape, and the driven screw bodies 16 and 17 are formed on the outer surface of each driven screw body 16 and 17 in parallel with the screw center axis. The wire tensioning tool according to claim 1, wherein the groove 23 is formed, and the restriction member 18 is provided with a protrusion 31 that engages with the groove 23. 3. An operating screw body 1 which is screwed and connected to each other.
5 and the driven screw body 16 and the regulation body 1 that supports them.
8 and the operation screw body 15 has the stopper portion 3 provided on the regulation body 18.
At 0, the movement of the driven screw 16 is restricted so that it cannot move in the axial direction.
And the restricting body 18 are connected to each other via a groove 23 and a protrusion 31 which are relatively movable along the central axis of the screw so that they cannot rotate relative to each other, and the driven screw body 16 is provided with the wire connector 3 to secure the wire tension. Ingredient 4. An internal thread of a right-hand thread 21 is formed at one end,
Operation screw body 1 in which a female screw of a left screw 22 is formed at the other end
5 and a pair of driven screw bodies 16 and 17 screwed into and connected to the right screw 21 and the left screw 22, respectively, and the driven screw bodies 16 and 17 are connected to the wire connector 3 or the fixture 2.
5 is a wire tensioning tool in which the operation screw body 15 is axially immovably restricted by a stopper portion 30 of a restricting body 18 provided between the driven screw bodies 16 and 17. Each of the driven screw bodies 16 and 17 is formed of a screw shaft having a non-circular cross section having at least one flat surface 39 along the longitudinal direction of the peripheral surface, and end walls provided at both upper and lower ends of the restricting body 18. For each of the 28,
A non-circular engagement hole 38 is formed which is fitted to both driven screw bodies 16 and 17 so as to be relatively movable and abuts on the flat surface 39 to prevent the driven screw bodies 16 and 17 from being rotated together. A wire tensioner. 5. An operating screw body 15 having a female screw, a driven screw body 16 composed of a screw shaft having a non-circular cross section having at least one flat surface 39 along the longitudinal direction of the peripheral surface, and a restricting body supporting these. 18, and the driven screw 16 is attached to the end wall 28 provided at one end of the regulating body 18.
A non-circular engagement hole 38 that fits relative to the outside and contacts the flat surface 39 to prevent rotation of the driven screw body 16
A wire tightening tool formed by. 6. The wire tensioning tool according to claim 4, wherein the driven screw members 16 and 17 are formed by screw shafts having a polygonal cross section.