JPH076547U - Length adjusting tool for tension wire for fixing equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] When erecting an antenna on the roof, connect the wire material whose one end is connected with an anchor nail under the eaves and the wire connected to the antenna support pillar in a state in which a predetermined tension is applied. Make work easy and quick. [Structure] One wire 22 can be freely inserted in the forward direction from the wire entry hole 4 to the wire exit hole 5, but the device 1 that cannot be pulled out in the opposite direction due to the locking member 10 being caught , Provided at one end of the other wire 20. The tension once applied between the wires 22 and 20 cannot be canceled unless the lock member 10 is disengaged.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a length adjusting tool for a cable extension used for fixing a device such as an antenna on a rooftop.

[0002]

[Prior art]

 When raising the antenna on the roof, the worker first climbs a ladder leaning against the wall under the eaves, fixes one end of the flexible wire rope to the wall with anchor nails, etc., and attaches the ring part at the other end. Temporarily put it on the tip side of the roof, do this under a total of 4 eaves, and then the worker climbs onto the roof and picks up the loop part of the wire rope temporarily put on the tip side of the roof as described above. The other end of the wire that was connected to the pole of the antenna is passed through the loop part and folded back, and entangled with the wire tension side to make a temporary connection, and the work up to this point is similarly performed on all four sides of the antenna. However, the tension of each wire was gradually adjusted. This tension adjustment was to gradually shift the folding position of the wire rope with respect to the loop portion for each wire while observing the overall tension balance.

[0003]

[Problems to be solved by the device]

 When adjusting the tension of each wire, the work of untangling the wires and entwining them again had to be repeated many times, which was extremely troublesome. Further, the wire may be folded back at the same location, causing work hardening and breaking. The longer the work was, the more dangerous the work was because the work area was closer to the tip of the roof.

The present invention has been made in view of the above circumstances, and is for fixing a device in which tension of a wire (hereinafter, referred to as a “stretch wire”) can be easily and quickly adjusted and the tension wire is not broken. It is an object of the present invention to provide a length adjuster for a cable extension.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention takes the following technical means. That is, the present invention is a length adjuster used at a connecting portion between a fixed wire for connecting one end to a fixed object or a fixture and a tension wire for exerting tension along the longitudinal direction, which is one end of the main body. The part is provided with a wire connecting part that connects one wire of the fixed wire or the overhead wire, and inside the main body part, the wire connecting part side is penetrated as an outlet hole and the opposite side is penetrated as an inlet hole. Is provided, and a feed regulation mechanism that allows movement of the wire rod inserted in this line passage in the forward direction but prevents movement in the reverse direction is provided. Is equipped with a lock release part that can hold it in an inoperative state.

[0006]

[Action]

 Now, for example, assume that one end of a fixed wire (corresponding to a conventional wire rope) is connected to the wire connecting portion of the main body, and the end of the tension wire is inserted into the wire passage through the wire entry hole. This cable can be moved in the wire passage in the forward direction from the entry hole to the exit hole (that is, the direction toward the fixed line), but it can be moved in the opposite direction by the feed regulation mechanism. As a result, the tension once applied to the tension wire and the fixed wire is maintained as it is, unless the lock releasing portion is operated. If it becomes necessary to move the fixed line in the opposite direction, operate the lock release unit to deactivate the feed regulation mechanism.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 (a) is a perspective view showing a length adjuster 1 according to the present invention obliquely from above, and FIG. 1 (b) is a perspective view showing obliquely from below. Further, FIGS. 2A and 2B are views for explaining the use condition by the cross section taken along the line AA of FIG. Reference numeral 20 is one fixed wire to be connected, and 22 is a tension wire of the other. In the length adjusting tool 1, 2 is a metal or resin main body, which is a lower surface in the illustrated state (hereinafter, this surface side is referred to as “lower” of the main body 2 and the other side). Is referred to as “upper”), which is a line coupling portion 3 for the fixed wire 20. The fixed wire 20 used in this embodiment is formed by bending a wire in a U shape and then twisting the wire over its entire length, and forming an annulus 21 at the end on the side where the U shape is bent. It has plasticity, and the ends (two wire ends) on the side opposite to the ring part 21 are connected to the wire coupling part 3 by press fitting, embedding, bonding, welding or the like in a state where it cannot escape. ing.

A cavity 8 that opens toward the lower surface of the main body 2 is formed, and this opening is closed by a packing piece 7. An inlet wire hole 4 communicating with the cavity 8 is formed on the upper surface of the main body portion 2, and an outlet wire hole 5 that is coaxial with the inlet wire hole 4 is formed in the packing piece 7. Therefore, the inlet wire hole 4 and the outlet wire hole 5 are communicated with each other through the cavity 8, and this communicating portion serves as a wire passage 6 for the overhead wire 22. In the cavity 8, the side surface (left side in FIG. 2) facing the line passage 6 is an inclined surface such that the cavity 8 becomes narrower toward the back (upper side). A lock member 10 is inserted into the cavity 8 so as to come into contact with the inclined surface and the inner surface of the inner side, and this state is provided by a spring 11 provided between the packing piece 7 and the lock member 10. It is becoming popular. The lock member 10 has a disc shape as shown in FIG. 3 (a), and has serrations on the outer peripheral surface thereof. The diameter of the lock member 10 is formed such that the outer peripheral surface of the lock member 10 is slightly protruded into the line passage 6 in a state of being in contact with the inclined surface of the cavity 8 and the inner surface at the back. The packing piece 7 is fixed to the main body 2 by an appropriate means such as press fitting, screwing, adhesion or welding.

The lock member 10, the inclined surface of the cavity 8, the spring 11 and the like constitute a feed preventing mechanism for the tension wire 22, and when the tension wire 22 is inserted from the wire entry hole 4, the lock member 10 is locked. Pushes the side surface of the tension wire 22 rightward while being pushed back slightly against the spring 11. For this reason, when the tension wire 22 is pushed in the forward direction from the entry hole 4 to the exit hole 5, the movement thereof is allowed, but even if it is pulled out in the opposite direction, the lock member 10 is stretched to the inclined surface of the cavity 8. Since it wedges into the side surface of the overhead wire 22, its movement is blocked.

On the other hand, on the upper surface of the main body portion 2, a lock release hole 9 is formed so as to be in line with the above-mentioned wire entry hole 2 and communicate with the cavity 8. The lock release hole 9 is arranged so as to face the outer peripheral surface of the upper portion of the lock member 10. When the short wire 23 or the like is inserted into the lock release hole 9 as shown in FIG. Can be pushed down against the spring 11. That is, these structures constitute a lock releasing portion for the above-mentioned feed restricting mechanism, and if the wire 23 is kept inserted in the lock releasing hole 9, the tension wire 22 can be moved only in the forward direction. Not only can it be moved in the opposite direction.

By the way, the lock member 10 may be replaced with a spherical member as shown in FIG. 3B or a trapezoidal member as shown in FIG. 3C. As shown by the chain double-dashed line in FIG. 3C, the operation piece 12 protruding to the outside of the main body 2 is screwed to the lock member 10 (the neck 13 provided on the operation piece 12 is vertically moved). In order to allow the movement, a long hole in the vertical direction is required on the side wall of the main body 2). In this case, needless to say, the operation piece 12 constitutes a lock release portion, and the lock release hole 9 is not necessary.

Next, the usage situation of the length adjuster 1 will be described with reference to FIG. On the roof, after determining the standing position of the pillar 31 to which the antenna 30 is attached, the ring portion 21 of the fixed wire 20 is fixed to the anchor eaves 32 or the like on each of the four eave wall surfaces centering on this standing position. Fixed by. Since the fixed wire 20 has plasticity unlike wire ropes used in the same place in the past, it can be bent so that the length adjusting tool 1 can be kept in a state of facing the roof, It is useful for improving work safety. 33 is a protective tube. Further, a hook metal fitting 34 for hooking the ring portion 21 of the fixed wire 20 is attached to the pillar 31 of the antenna 30, and the fixed wire 20 and the length adjusting tool 1 are also connected to the hook metal fitting 34. Insert both ends of the tension wire 22 into the respective wire entry holes 4 of the upper and lower length adjusting tools 1, preferably while gradually increasing the insertion amount of the tension wire 22 in the upper length adjusting tool 1, The tension is evenly applied to the tension wire 22 of. If it is inserted too much, a short wire 23 (see FIG. 2B) or the like is inserted into the lock release hole 9 so that the tension wire 22 can be pulled out from the length adjuster 1 as much as necessary. Unlike this usage example, the tension wire 22 may be directly connected to the hook metal fitting 34 without using the upper fixed wire 20 and the length adjusting tool 1.

The length adjuster 1 of the present invention is not limited to being used for fixing the antenna 30. Further, the tension wire 22 may be connected to the wire coupling portion 3 of the main body portion 2, and the fixed wire 20 (not U-folded or the like) may be inserted into the wire entry hole 4. The configurations and shapes of the feed restricting mechanism and the lock releasing portion are not limited to those in the above embodiment.

[0014]

[Effect of device]

 The present invention is provided with the above-mentioned structure, and a fixed wire or a tension wire can be freely inserted in the forward direction from the input hole to the output hole, but it does not come out on the contrary. Since it has a feed control mechanism, the tension applied between the fixed wire and the tension wire is maintained as it is, unless the lock release part is operated. Therefore, when adjusting the tension, there is no need to entangle fixed wires or overhead wires and to return them again and again. Of course, the fixed wire and the tension wire do not break due to work hardening. Since the tension adjustment can be performed easily and quickly in this way, the worker does not have to go back and forth to the tip of the roof many times, and the work safety is improved.

[Brief description of drawings]

FIG. 1 (a) is a perspective view showing a length adjuster according to the present invention from diagonally above, and FIG. 1 (b) is a perspective view showing from diagonally below.

2 (a) and 2 (b) are views for explaining the use situation by the cross section taken along the line AA of FIG. 1 (a).

FIG. 3 is a perspective view showing various lock members used in the feed regulation mechanism.

FIG. 4 is a diagram showing how the length adjuster is used when the antenna is set up on the roof.

[Explanation of symbols]

 1 Length adjuster 2 Body part 3 Wire connection part 4 Inlet hole 5 Outlet hole 6 Wire passage 9 Lock release hole 20 Fixed wire 22 Overhead wire

Claims (1)

[Scope of utility model registration request] 1. A length adjuster used for a connecting portion between a fixed wire for connecting one end to a fixed object or an instrument and a tension wire for exerting tension along the longitudinal direction, wherein the length adjuster is provided at one end of the main body. Is provided with a wire coupling part for connecting one wire of a fixed wire or a tension wire, and a wire for the other wire that penetrates through the wire coupling part side as an output hole and the opposite side as an input hole inside the main body part. Along with the passage, there is a feed restricting mechanism that allows the wire rod inserted in the wire passage to move in the forward direction but prevents the wire from moving in the reverse direction. A length adjusting tool for a tension wire for fixing a device, which is provided with a lock release part for holding the inactive state.