JPH0587746U - Magnetic cable - Google Patents

Abstract

(57) [Summary] [Purpose] If the cable is brought closer to the steel material during measurement, the magnetic force will automatically fix the cable to the steel material and reduce the work time without disturbing the measurement. It is intended to provide an adhesive cable. In order to solve the above-mentioned object, a magnetically attachable cable 20 of the present invention is a cable 20 having an insulating wire core 15 and a sheath 21, in which all of the sheath 21 is formed of a cohesive magnet member. is there.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cable connected to a verticality measuring device for measuring the verticality of steel materials during construction of a building or the like.

[0002]

[Prior Art]

 The verticality of the steel material 1 under construction such as a building is measured by a verticality measuring device 2 as shown in FIG. The verticality measuring device 2 has, for example, a measuring device main body 2a, an oscillator 2b, and a receiver 2c, which are connected via a cable 3 and a cable 4. The oscillator 2b is horizontally installed on the lower portion of the steel material 1 by a leveler or the like, and the receiver 2c is in contact with the upper portion of the steel material 1. A signal 5 such as an infrared ray oscillated from the oscillator 2b (indicated by an arrow in the figure) is emitted vertically upward, and the verticality is measured by the receiver 2c sensing it. If the distance sb from the side surface of the steel material 1 to the transmission point 2b0 of the oscillator 2b and the distance sc from the side surface of the steel material 1 to the reception point 2c0 of the receiver 2c are made equal, the amount of light emitted from the receiver 2c becomes maximum. When it becomes, it is judged that the steel material 1 has become vertical. Incidentally, 6 is the ground.

As shown in FIG. 5, the cable 3 and the cable 4 for connecting the main body 2a of the verticality measuring device 2 and the oscillator 2b and the receiver 2c to each other are conductors 11 insulated by an insulator 12, as shown in FIG. A pair of insulating cores 15, a shield braid 13 provided on the pair of insulating cores 15 for shielding noise from the outside, and a sheath 14 coated on the shield braid 13. Become. When the wind blows during the measurement of the verticality of such a cable 4, it sways in the air as indicated by the chain double-dashed line in FIG. There is a problem that it may interfere with Therefore, if the wind blows during the verticality measurement, the cable 4 is fixed to the steel material 1 with screws or clips so that it does not sway in the air as indicated by the chain double-dashed line in Fig. 4. And the clip was removed.

[0004]

[Problems to be solved by the device]

 However, it takes a lot of time and effort to fix such a cable 4 to the steel frame material 1 every time the verticality of each steel frame material 1 is measured while building a building or the like. There was a problem that it took too much.

The present invention has been made in view of the above problems of the conventional technology. The purpose of the present invention is to make a cable close to a steel frame material at the time of measurement, and The aim is to provide a magnetically-attachable cable that can be automatically fixed to a steel frame material and not obstruct the measurement, thus shortening the working time.

[0006]

[Means for Solving the Problems]

 In order to solve the above-mentioned object, the magnetic adhesive cable of the present invention is a cable having an insulating core and a sheath, in which all or at least the outer peripheral portion of the sheath is formed of a binder magnet member, or the sheath. A magnet member is attached to one side of the outer circumference of the magnet along the length direction for the entire length or part thereof.

[0007]

[Action]

 When measuring the whole or at least the outer circumference of the sheath with a cohesive magnet member, or attaching the magnet member to one side of the outer circumference of the sheath along the length direction or partially, When the cable is moved closer to the steel material, the magnetic force automatically fixes the cable to the steel material and does not sway in the air even if wind blows, and it receives signals such as infrared rays emitted from the measuring instrument oscillator It does not prevent the vessel from sensing.

[0008]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. 1 is a cross-sectional view of a magnetically-attachable cable 20 of the present invention, FIG. 2 is a cross-sectional view of a magnetically-attachable cable 30 according to another embodiment of the present invention, and FIG. 3 is yet another of the present invention. FIG. 4 is a cross-sectional view of a magnetically-attachable cable 40 that is an example. 1 to 3, parts having the same functions as those in FIG. 5 are designated by the same reference numerals, and the description thereof will be omitted. 1 is different from FIG. 5 in that the entire sheath 21 is formed of a caking magnet member.

The sheath 21 of the magnetically attractable cable 20 of the present invention is formed of a flexible rubber magnet member having a flexible property over the entire circumference and the entire length. Such a binder magnet member is formed by extrusion molding by mixing a powder rubber material with a synthetic rubber that is cured by vulcanization after molding or a thermoplastic elastomer that does not require vulcanization.

When the entire sheath 21 is formed of the caking magnet member as described above, the cable 20 is brought close to the steel material 1 after the receiver 2c is fixed to the upper portion of the steel material 1 at the time of measurement. Then, the cable 20 is also stuck and fixed along the steel frame material 1 by the magnetic force of the sheath 21. As a result, the cable 20 is prevented from swaying in the air due to wind blowing during the verticality measurement, and the receiver 2c does not prevent the signal 5 such as infrared rays transmitted from the oscillator 2b from being sensed. Since the work of fixing the cable 20 to the steel material 1 does not have to be performed, the working time can be shortened. Further, since the flexible rubber magnet is flexible, the cable 20 has good flexibility and workability.

In addition to the above-described embodiment, as shown in FIG. 2, even if the adhesive rubber magnet member 31 is attached to a part of the sheath 14 over the entire length or in an arbitrary section with a gluing agent, the measurement is performed. At this time, if the cable 30 is brought close to the steel material 1, the cable 30 is automatically fixed to the steel material 1 by the magnetic force of the caking rubber magnet member 31, so that the wind blows during the verticality measurement. It does not sway in the air and does not prevent the receiver 2c from sensing a signal such as infrared rays transmitted from the oscillator 2b. Further, since the work of fixing the cable 30 to the steel frame material 1 is not required, the working time can be shortened. Similarly, since the flexible rubber magnet is a rubber magnet, the cable 30 has good flexibility and workability. In addition, the adhesive rubber magnet member 31 may be attached to the cable by a clip or the like that engages with the cross-sectional shape of the cable, instead of sticking with the adhesive.

Further, as shown in FIG. 3, a clip 41 that engages in a cross-sectional shape of the cable may be formed by a caking plastic magnet member, and the clip 41 may be intermittently attached to the outer circumference of the cable. Such a caking plastic magnet member is also formed by extrusion molding by mixing a powder magnet material with a synthetic resin or the like that is hardened after molding.

Similarly, in the cable 40 having such a structure, when the receiver 2c is fixed to the upper portion of the steel frame material 1 at the time of measurement, when the cable 40 is brought close to the steel frame material 1, the cable 40 is not bonded. Since the cable 40 is also stuck and fixed along the steel frame material 1 by the magnetic force of the plastic magnet clip 41, the wind does not blow during the verticality measurement and does not sway in the air. As a result, the infrared rays oscillated from the oscillator 2b. It does not prevent the receiver 2c from sensing such a signal. Further, since the work of fixing the cable 40 to the steel frame material 1 is not required, the work time can be shortened. Also, since the magnet is in the shape of a clip, it can be easily attached and detached at any place on the cable.

[0014]

[Effect of the device]

 The magnetically attractable cable according to the present invention is formed by forming a clad magnet member on the whole or at least the outer peripheral portion of the sheath, or on one side of the outer peripheral portion of the sheath along the length direction along the entire length, or partially on the magnetic member. By attaching the cable, the cable is automatically fixed to the steel frame material by magnetic force when the cable is brought close to the steel frame material during measurement, so work to fix the cable to the steel frame material is performed. Since it is not necessary and does not sway in the air even when the wind blows, it does not prevent the receiver from sensing signals such as infrared rays emitted from the oscillator of the measuring instrument, and the working time can be shortened.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the magnetically attractable cable of the present invention.

FIG. 2 is a cross-sectional view of another embodiment of the magnetically attractable cable of the present invention.

FIG. 3 is a cross-sectional view of another embodiment of the magnetically attractable cable of the present invention.

FIG. 4 is an explanatory diagram of measuring verticality of a steel frame material.

FIG. 5 is a cross-sectional view of a conventional cable.

[Explanation of symbols]

 20 magnetic adhesive cable 21 magnetic adhesive sheath 11 conductor 12 insulator 15 insulated wire core

Claims (1)

[Scope of utility model registration request] 1. In a cable having an insulated wire core and a sheath, all or at least the outer peripheral portion of the sheath is formed of a cohesive magnet member, or one side of the outer periphery of the sheath has a total length along the length direction, Alternatively, a magnetically attachable cable characterized in that a magnet member is partially attached.