JPH0456692B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a long length of wire, such as an insulated trolley wire, that is wound into a drum or coil shape, and is applied by being wound in such a manner. The present invention relates to a straightening device for a linear body that needs to be stretched and laid after removing curls.

[Conventional technology]

As is well known, an insulated trolley wire is a long conductor covered with an insulating cover having a substantially U-shaped cross section by resin extrusion molding. A part of the conductor is exposed at the opening, and stable current collection is achieved by passing the current collector through the opening and forcing it into contact with the exposed part of the conductor using the pair of legs of the insulating cover that forms the opening as a guide. We are making sure that this is done.

Such insulated trolley wires are coiled or drum-wound and transported to the installation site, uncoiled or unwound from the drum, and then extended.
Both ends of the wire are held back, and tension is applied by tightening the wire at the holding part.

However, the insulated trolley wire is given a strong curl by coil winding or drum winding, and this curl still remains even when the tension is applied at the time of installation, and an opening for passing the current collector is set. In addition, the pair of legs of the insulating cover that functions as a guide is deformed, and if left as it is, problems such as hindering the running of the current collector and inducing disconnection of the wire occur.

For this reason, it has been necessary to correct the insulated trolley wire in order to sufficiently remove the curls during the wire drawing operation.

Conventionally, under such circumstances, a straightening device especially for insulated trolley wires has already been proposed as, for example, Japanese Patent Publication No. 59-24010.

In such a proposed example, three rollers are arranged between a pair of base plates so as to be located at each vertex of a triangle, and a roller is placed between one roller on one side and two rollers on the other side. By passing the insulated trolley wire, the one roller and the two rollers press the insulated trolley wire and straighten it. One roller on one side is slidably provided in an elongated hole provided in the base plate, so that the distance between the two rollers on the other side can be adjusted. This makes it easier to pull the insulated trolley wire between the rollers by keeping the one roller farther away from the two rollers, and also makes it easier to pull the insulated trolley wire between the rollers. By adjusting the distance between the rollers and the rollers, the strength of the pressure applied to the insulated trolley wire can be adjusted, thereby making it possible to correct the curl of the insulated trolley wire.

[Problem that the invention seeks to solve]

In such an insulated trolley wire straightening device, in order to apply lateral pressure to the insulated trolley wire between two movable rollers, a male thread is formed at the end of the roller shaft and this is connected to the base plate. By inserting the roller into the elongated hole and tightening it with a nut, the roller is positioned and fixed to the base plate.

However, even if the roller is positioned and fixed by tightening the nut, the roller applies strong lateral pressure to the insulated trolley wire, and the repulsive force causes the roller to slip at the nut tightening section, and then move along the elongated hole in the base plate. This causes the insulated trolley wire to retreat from the two opposing rollers, making it difficult to sufficiently remove the curl of the insulated trolley wire.

In addition, when straightening with such three-point rollers, the insulated trolley wire is bent into an arch shape,
Even if this was removed, the curved deformation state remained, and further correction work was required to correct this, resulting in a problem in workability.

Furthermore, since the rollers are fastened to and released from the base plate by screwing in nuts as described above, adjusting the distance between the rollers is rather troublesome.

In view of the problems of the prior art described above, the present invention has been made to
The object of the present invention is to provide a straightening device of this kind that can reliably straighten a linear body such as an insulated trolley wire by a simple operation and can also straighten it and send it out.

[Means to solve the problem]

The orthodontic device of the present invention, which has been realized to achieve the above object, has a device base 1 as shown in the attached drawings.
, rollers 2 and 3 for supporting the linear body are provided on each side of the linear body introduction part and the delivery part, and the passing direction of the linear body is regulated at the further rear side of the linear body support roller 3 on the delivery part side. In addition, a linear material is connected and supported to the device base 1 via a moving operation lever 5 between the linear material supporting rollers 2 and 3 on both sides of the introduction section and the delivery section. A body pressing roller 6 is disposed, and a ratchet mechanism 7 is connected and provided between the moving operation lever 5 and the device base 1.

〔Example〕

Hereinafter, a more specific description will be given with reference to the accompanying drawings.

1 and 2 show a preferred embodiment of the orthodontic device according to the present invention.

The device base 1 includes a main base plate 11 obtained by processing a steel plate or the like into a desired shape, and an auxiliary base plate 12 having the same shape as the main base plate 11, which are separated and opposed to each other via a distance adjustment body 13, and the distance adjustment is performed. The body 13 is attached to the main base plate 11 by welding or the like, and a screw portion 13a is formed at the tip, which is passed through the auxiliary base plate 12, and is fastened with a nut 14, thereby assembling the body 13.

Therefore, on the main base plate 11, supporting rollers 2 and 3 are arranged on the introduction part side of the insulated trolley wire T, which is a linear body, and on the delivery part side of the insulated trolley wire T, and A take-up machine 4 serving as a delivery guide is arranged further behind the side support roller 3, and a pressing roller 6 is inserted between the support rollers 2 and 3 via an operating lever 5, which will be described in detail later. The main base plate 11 is movably connected and supported.

The supporting rollers 2 and 3 on the introduction section side and the delivery section side each have built-in bearings and are attached to shafts so that they do not damage the insulated trolley wire T and do not easily deform.
A pair of flanged rolling elements 21, 22 and 31, 3 made of hard plastic material such as ABS resin.
2, each of which is a virtual passing straight line of the insulated trolley wire T assumed on the main base plate 11.
They are arranged opposite to each other with _X1 in between, and the width of the separation is made to match the width of the insulated trolley wire T, so that the insulated trolley wire T can be passed through and supported in a contact state.

In addition, each flanged rolling element 21, 22, 23, 2
4 is positioned and implanted in the main base plate 11 by passing a threaded portion at the tip of its shaft portion through the main base plate 11 and screwing a nut 25 from below.

The take-up machine 4, which serves as one delivery guide, is mainly composed of a pair of rubber wheels 41 and 42 with built-in bearings, which differ by a predetermined angle θ from the virtual passing straight line _X1 between the supporting rollers 2 and 3. They are arranged opposite _to each other with a closed passing straight line I'm trying to make it possible. An arm portion of a handle 43 is fixed to one rubber wheel 41, so that the rubber wheel 41 can be rotated.

Note that each of the rubber wheels 41 and 42 is positioned and arranged on the main base plate 11 by screwing a bolt-shaped shaft member 44, which is disposed through the center of the rubber wheel, onto the main base plate 11.

Furthermore, like the supporting rollers 2 and 3 described above, the pressing roller 6 is comprised of a flanged rolling element 61 which is also made of a hard plastic material such as ABS resin and has a shaft with a built-in bearing. Virtual passing straight line set between rollers 2 and 3 X ₁
By inserting the own shaft portion 61a into an elongated hole 11a bored in the main base plate 11 so as to intersect the main base plate 11, the shaft portion 61a can be moved along the elongated hole 11a. It is implanted by welding or screwing onto the frame portion 51 of the operating lever 5.

The operating lever 5 is located between the main base plate 11 and the auxiliary base plate 12, and is attached to a frame portion 51 at the base.
is pivoted to a pivot shaft 52 connected between both base plates 11 and 12, thereby making the pressing roller 6 swingable so that it can move along the elongated hole 11a.
For this operation, there is an operation button 53 at the tip of the swinging side.
A handle 54 is provided.

A branch portion of the operating lever 5 that connects the handle 54 and the frame portion 51 is formed by a tubular member 55 with a slit.
A pair of plate-like members 51a, 51 from the slit portion of
The frame portion 51 is formed by extending the portions a while facing each other apart from each other. A ratchet mechanism 7 is disposed between the pair of plate-like members of the frame portion 51.

The ratchet mechanism 7 includes a toothed ratchet plate 71 that is fixed to a bracket 12a installed on the auxiliary base plate 12 by screws or the like and extends between a pair of plate-like members 51a, 51a, and the ratchet plate 71. The plate-like member 51a,
The push rod 56 has a ratchet pawl 73 pivotally attached to a pivot shaft 72 connected between the levers 51a and 51a, and is passed through the tubular member 55 of the operating lever 5 and has one end connected to the operating button 53 at the other end of the push rod 56. The hook portion 56a is fitted into and locked in the recess 73a of the ratchet claw 73 on the opposite side of the claw forming end, so that the ratchet claw 73 can be rotated by operating the operation button 53. be.

Furthermore, a coiled spring 57 is inserted into the tubular member 55, and the spring 57 is pressed so that one end stops at the locking portion 55a inside the tubular member and the other end presses the operation button 53. By being stored in this state, the operation button 53 is always projected outward from the handle 54, and the ratchet pawl 73 engages the teeth of the ratchet plate 71 due to the traction force of the push rod 56 that is interlocked with the operation button 53. 71a.

Therefore, unless the operation button 53 is pressed, the ratchet pawl 73 remains engaged with the ratchet plate 71, and when the operation button 53 is pressed, the ratchet pawl 73 engages the ratchet plate 71.
For the first time, the meshing state is released.

The ratchet plate 71 of the ratchet pawl 73
The engaged state is when the operating lever 5 is tilted to the maximum extent toward the base plate 11 (the state shown in the figure).
When the claw 73 is rotated in the direction away from the base plate 11, that is, in the direction of the arrow, the claw 73 engages the toothed portion 71a.
It is preferable that the tip angle of the teeth and the tip angle of the pawl be determined so that the pawl 73 is allowed to slide, and when the pawl 73 moves in the opposite direction, the pawl 73 is bitten into the tooth portion 71a and locked. Further, the pressing roller 6 is connected to the operating lever 5.
As shown in the figure, the virtual passing straight line X ₁
Its fixed position is chosen such that it is displaced to one side of the .

By doing so, when lifting the operating lever 5 in the direction of the arrow from the most reclined state, the locking function of the ratchet mechanism 7 does not work and the pressing roller 6 intersects the virtual passing straight line _X1. It can still be moved to the opposite side, that is, in the direction of the arrow. On the other hand, when the operating lever 5 that has been lifted in this way is pushed down toward the base plate 11, the locking function of the ratchet mechanism 7 is activated and the lever is pressed. Movement of the roller 6 in the direction opposite to the direction of the arrow is prevented. This state can be released by pushing the operation button 53 and retracting the ratchet pawl 73 to release the locked state.

Therefore, in that case, pressing the operation button 53 and tilting the operation lever will cause the pressure roller 6 to
can be returned to its original position.

In this embodiment, an introduction auxiliary guide 8 having a shoe groove through which the insulated trolley wire T is guided is provided in front of the introduction side support roller 2, and a pulling machine 4, that is, a pair of rubber wheels 41, 42
A feeding auxiliary guide 9 having a shoe hole through which the insulated trolley wire T is guided is provided behind the
This allows the insulated trolley wire T to be introduced and sent out more reliably.

According to the correction device of this embodiment configured as described above, before the insulated trolley wire T is drawn in and passed through, the operation lever 5 is moved to the base plate 11.
, and displace the pressing roller 6 to one side of the virtual passing straight line _X1 .
Then, the insulated trolley wire T that has been unwound from the wound state is fed through the introduction auxiliary guide 8 so as to contact and pass between the flanged rolling elements 21 and 22 of the introduction side support roller 2, and along the imaginary passing straight line X. The insulated trolley wire T is supported by both support rollers 2 and 3 by making the contact pass between the pair of flanged rolling elements 31 and 32 of the delivery side support roller 3 while moving the insulated trolley wire T. In this supported state, the pressing roller 6, which has been displaced to one side, is moved in the direction of the arrow so as to apply lateral pressure to the insulated trolley wire T passed through by lifting and moving the operating lever 5 in the direction of the arrow.
Thereby, the insulated trolley wire T is curved between the supporting rollers 2 and 3, and the curling tendency is removed.

In that case, the pressing roller 6 receives a reaction force corresponding to the lateral pressure applied to the insulated trolley wire T, but this is reliably received by the locked state of the ratchet mechanism 7, and the pressing roller 6 is prevented from moving backward. are doing.

In this way, the insulated trolley wire T that has undergone the curving operation has its end coming out of the feeding section side support roller 3 oriented in a direction along the virtual passing straight line X ₂ due to the curving. The rubber wheels 41 and 42 are placed in contact with each other, and the insulating trolley is fed so as to pass through the auxiliary guide 9. In this state, the rubber wheel 41 is driven by rotating the handle 43, and the The wire T is taken up and sent out in the direction of the arrow to be used for wire extension.

In this way, even if the moving direction of the insulated trolley wire T changes due to curved deformation, the insulated trolley wire T can be sent out straight because it is taken over at the changed guide.

In addition, the above-mentioned sending-out side auxiliary guide 9 has a sufficient wall thickness to be sturdy, and can also be used as a so-called cutting jig to cut the sent-out insulated trolley wire T by utilizing the vertical surface of the sending-out side. I'm trying to make it possible.

3 and 4 show an example of application of the orthodontic device according to the present invention, and parts with the same or similar structures and functions as those in FIGS. 1, 2, and 2 are given the same reference numerals.

This embodiment is particularly applied to the delivery guide 4. In other words, the delivery guide 4, like the supporting rollers 2 and 3 on both the introduction section side and the delivery section side,
It consists of a pair of flanged rolling elements 401 and 402 molded from a hard plastic material such as ABS resin with a built-in bearing type and a shaft.
They are arranged facing each other with a passing straight line _X2 in between, and the width of the separation is made to match the width of the insulated trolley wire T.
This allows the insulated trolley wire T to pass through while being in contact with it.

In the case of this embodiment, since the pair of flanged rolling elements 401 and 402 serving as the delivery guide 4 do not have a take-up function, it is sufficient to tow and take off the material at the point where it is sent out from the rolling members.

In addition, in the above two embodiments, the delivery guide 4
Although a wheel structure is adopted as shown in FIG.

〔Effect of the invention〕

As explained above, according to the straightening device according to the present invention, the pressing roller that is moved between the front and rear supporting rollers to apply lateral pressure to the insulated trolley wire can be moved arbitrarily by rotating the operating lever. Since the ratchet mechanism reliably prevents backward movement after setting the movement position, it is possible to easily remove curls even from linear objects with strong curls, and the intended purpose has been more than achieved. and has great practical value.

[Brief explanation of drawings]

1 and 2 are a front explanatory view and a side explanatory view showing one embodiment of the orthodontic device according to the present invention, and a third
FIG. 4 is a front explanatory view and a side explanatory view showing another embodiment of the correction device according to the present invention. In the figure, T is an insulated trolley wire, 1 is a device base, 2, 3 are supporting rollers, 21, 22, 31,
32, 61, 401, 402 are hard plastic flanged rolling elements with built-in bearings, 4 is a delivery guide, 41, 42 are rubber wheels with built-in bearings,
5 is an operating lever, 53 is an operating button, 54 is a handle, 6 is a pressing roller, 7 is a ratchet mechanism, 7
1 is a ratchet plate, and 73 is a ratchet pawl.

Claims (1)

[Scope of Claims] 1. On the device base 1, rollers 2 and 3 for supporting the linear body are provided on each side of the linear body introducing section and the feeding section, and further behind the linear body supporting roller 3 on the feeding section side. A delivery guide 4 that regulates the passing direction of the linear object on the side
A linear object pressing roller is connected and supported with respect to the device base 1 via a moving operation lever 5 between the linear object supporting rollers 2 and 3 on both sides of the introduction section and the delivery section. 6, and a ratchet mechanism 7 is disposed in conjunction with the moving operation lever 5 and the device base 1. 2 The linear object passing and feeding direction X ₂ in the above-mentioned sending guide 4 is connected to the linear object passing position of each of the linear object supporting rollers 2 and 3 on both sides of the introduction section and the sending out section, and the virtual passing linear direction X is assumed. 1. The straightening device for a linear body according to claim ₁ , wherein the straightening device is made to have a predetermined angle different from that of claim 1. 3. Straightening for linear bodies according to claim 1, wherein the delivery guide 4 is mainly composed of a pair of rubber wheels 41 and 42 with built-in bearings, and one of the rubber wheels is provided with a handle 43 to serve as a take-up machine. Device. 4. The straightening device for a linear object according to claim 3, further comprising an auxiliary guide in which a linear object passage hole is formed at the rear of the rubber wheel. 5. The linear body according to claim 1, wherein the linear body supporting rollers 2, 3, the linear body pressing roller 6, and the delivery guide are comprised of a shaft with a built-in bearing and a flanged hard plastic rolling element. Orthodontic device. 6 The moving operation lever 5 is pivotally connected to the mounting base 1 at its base end, and has a ratchet mechanism 7 at its swinging end opposite to the pivot position.
The straightening device for a linear body according to claim 1, further comprising a handle provided with an operation button associated with the handle. 7 The ratchet mechanism 7 includes a toothed ratchet plate fixed to the device base 1, and a ratchet pawl pivotally attached to the moving operation lever 5 and provided so as to be interlockable with an operation button provided on the moving operation lever. A straightening device for a linear body according to claim 1, comprising: