JP5106566B2 - Mat for preventing small objects from entering electrical equipment - Google Patents

Description

  The present invention relates to a small object intrusion prevention mat for an electrical facility that prevents small animals, plants, and the like from entering the electrical facility from a cable insertion port provided in the electrical facility.

  In electrical equipment such as cubicles and control panels, a cable insertion port is formed in a bottom plate or a wall plate, and a plurality of control cables are inserted into the cable insertion port. On the other hand, when such electrical equipment is installed outdoors, insects and plants inhabit the area, and insects enter the electrical equipment from the gap between the cable insertion port and the control cable and the gap between the control cables. There is a case. When insects or the like enter, there is a risk that the equipment in the electrical facility may malfunction due to contact of insects or the like.

  Therefore, in order to prevent insects and the like from entering the electrical equipment from the cable insertion opening, a filling material such as putty has been filled in the gap between the cable and the cable insertion opening. Moreover, the technique (for example, refer patent document 1) which covers a cable with the outer sheath containing an antifungal agent or an anti-anticide is known.

JP 09-102220 A

  However, in the technique of filling the filler, when a plurality of cables are bundled and inserted into the cable insertion port, the gap between each cable and the cable insertion port (outer side of the cable bundle) is closed with the filler. It is difficult to completely close the gap (inside the cable bundle) with a filler. As a result, insects and the like enter the electrical equipment through the gaps between the cables. Moreover, although the technique of patent document 1 can prevent small animals, such as a spider and an ant, biting a cable, it cannot prevent that an insect etc. penetrate | invade from the clearance gap between cables.

  Accordingly, an object of the present invention is to provide a mat for preventing small objects from entering an electrical facility that can reliably prevent insects and the like from entering the electrical facility from a cable insertion opening.

  In order to achieve the above object, according to the first aspect of the present invention, a small object such as a small animal or a plant enters an electrical facility such as a cubicle or a control panel having a cable insertion port for inserting a cable from the cable insertion port. A mat for preventing small objects from intruding into electrical equipment, which has a sheet shape as a whole, the plane of which is larger than the opening surface of the cable insertion port, and a cable through which the cable can be inserted A plurality of holes are formed, and on the outer peripheral side of the cable hole, a filling portion is formed that can be filled with fluid and expands toward the cable hole side by filling the fluid so that the peripheral edge of the cable hole is in close contact with the cable. This is a mat for preventing small objects from entering an electrical facility.

  According to the present invention, the intrusion prevention mat is attached so as to cover the opening of the cable insertion port, and the filling portion is filled with fluid in a state where the cable is inserted into each cable hole. Thereby, a filling part expand | swells to the cable hole side, and the periphery of each cable hole closely_contact | adheres to each cable.

  According to a second aspect of the present invention, in the mat for preventing small objects from entering the electric equipment according to the first aspect, the cable holes can be inserted with cables having different diameters.

  According to a third aspect of the present invention, in the mat for preventing small objects from entering the electric equipment according to any one of the first or second aspects, the mat can be cut into a desired size and shape on the plane. It is characterized by that.

  According to a fourth aspect of the present invention, in the mat for preventing small object intrusion into the electric equipment according to any one of the first or third aspects, the cable holes are formed at a predetermined interval. And

  According to the first aspect of the present invention, since the opening of the cable insertion port is covered with this intrusion prevention mat and the filling portion is filled with fluid, the peripheral edge of each cable hole is in close contact with each cable. There is no gap on the outer peripheral side of the. For this reason, it becomes possible to reliably prevent insects and the like from entering the electrical equipment from the cable insertion port. In addition, since it is only necessary to attach the mat for preventing intrusion and fill the filling portion with fluid, the work can be easily and quickly performed.

  According to the second aspect of the present invention, since cables having different diameters can be inserted into the cable holes, the periphery of each cable hole is attached to each cable even when cables having various diameters are inserted into a plurality of cable insertion openings. It is possible to reliably prevent insects and the like from invading.

  According to the invention described in claim 3, since the intrusion prevention mat can be cut into a desired size and shape, various types of cutting can be performed by cutting the intrusion prevention mat in accordance with the opening surface of the cable insertion port. The opening surface of the cable insertion port having a size and shape can be closed, and versatility can be improved.

  According to the fourth aspect of the present invention, since the cable holes are formed at a predetermined interval, a plurality of cables can be inserted and arranged in an orderly manner, and the cable can be easily inserted.

1 is a plan view of a small object intrusion prevention mat according to an embodiment of the present invention. FIG. 2 is a front view of a cubicle for laying the small object intrusion prevention mat of FIG. 1. It is a side view of the cubicle of FIG. It is sectional drawing which follows the AA line of FIG. It is a top view which shows the state before cut | disconnecting the small object intrusion prevention mat | matte of FIG. It is a top view which shows the state which cut | disconnected the mat | matte for small object penetration | invasion prevention of FIG. 1, and attached the stop plate. It is a top view which shows the state which mounted | wore the cable hole of the mat | matte for small object intrusion prevention of FIG. 1 with the control cable and the spacer. The spacer with which the small object penetration | invasion prevention mat | matte of FIG. 1 is mounted | worn is shown, (a) is the top view, (b) is the front view. It is a top view which shows the state before filling the filling part of the small object intrusion prevention mat of FIG. 1 with silicone. It is a schematic diagram which shows the state which filled the filling part of the mat | matte for small object penetration | invasion prevention of FIG. 1 with silicone. It is a top view which shows the modification of the mat | matte for small object intrusion prevention of FIG.

  Next, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a plan view showing a small object intrusion prevention mat (hereinafter referred to as “intrusion prevention mat” as appropriate) 10 according to an embodiment of the present invention. The intrusion prevention mat 10 is a mat for preventing small animals, plants, and the like from entering the electrical equipment. In this embodiment, the electrical equipment is a cubicle 50 as shown in FIGS. To do.

  The cubicle 50 is a housing that accommodates a switch gear, and a cable insertion port 51 through which a control cable (cable) 20 is drawn from the outside to the inside is formed in the bottom plate 52. The opening surface of the cable insertion port 51 is formed in a substantially rectangular shape so that a plurality of control cables 20 can be inserted.

  The intrusion prevention mat 10 is a sheet-like rectangle as a whole, and has a flat area larger than the opening area of the cable insertion port 51 of the cubicle 50. That is, it has a larger plane area than the cable insertion port of all electric equipments to be applied, and can be applied to all electric equipments. The intrusion prevention mat 10 is made of a material / material, such as soft rubber, which can be elastically deformed, expanded and contracted and has excellent environmental resistance, and can be cut into a desired size and shape on a plane. It has become. That is, it can be cut into a desired size and shape with scissors or a cutter in accordance with the size and shape of the cable insertion port of the electrical equipment.

  In addition, the intrusion prevention mat 10 is formed with a plurality of cable holes 11 penetrating the plane at a predetermined interval. That is, the cable hole 11 is composed of a circular main hole portion 11a and a cut portion 11b cut radially extending from the main hole portion 11a, and thereby the control cables 20 having different diameters. Can be inserted. Such cable holes 11 are formed vertically and horizontally at a predetermined distance.

  Further, a filling portion 12 that can be filled with silicone (fluid) is formed on the outer peripheral side of each cable hole 11. As shown in FIG. 4, the filling portion 12 has a tubular / tubular cross-sectional shape with respect to the thickness direction of the intrusion prevention mat 10, and is integrally formed and molded with the entire intrusion prevention mat 10. Such a filling portion 12 is formed in a lattice shape so that one cable hole 11 is positioned in the lattice, and all the flow paths (all pipe lines) are connected. Furthermore, the filling portion 12 is filled with silicone, so that the filling portion 12 expands toward the cable hole 11, and the size (inner diameter) of the filling portion 12 so that the peripheral edge of the cable hole 11 is in close contact with the control cable 20. ), The interval (pitch), and the size of the cable hole 11 are set.

  Next, the operation of the intrusion prevention mat 10 having such a configuration and a small object intrusion prevention method by the intrusion prevention mat 10 will be described.

  First, as shown in FIG. 5, the intrusion prevention mat 10 is cut a little larger than the opening area of the cable insertion port 51 of the cubicle 50. Next, as shown in FIG. 6, the cut intrusion prevention mat 10 is arranged so as to cover the cable insertion port 51, and a stop plate 70 is applied to the four sides of the intrusion prevention mat 10. The bottom plate 52 of the cubicle 50 is temporarily fixed with screws 71. At this time, the stopper plate 70 is attached so that at least one opening (cross section) of the filling portion 12 is opened. Here, the stopper plate 70 is made of metal or plastic, and is set to have substantially the same length as each side of the cable insertion port 51.

  Then, the filling plug 72 is inserted and attached to the opened opening of the filling portion 12. Here, the filling plug 72 has a substantially cylindrical shape in which the filling portion 12 side is tapered, and a distal end portion of a discharge pipe 81 of a pump 80 described later can be attached. Further, the filling plug 72 may be provided with a check valve so that the silicone that flows in and fills the filling portion 12 does not flow out to the outside.

  Thereafter, as shown in FIG. 7, the control cable 20 is inserted into the cable hole 11. At this time, one control cable 20 can be inserted into one cable hole 11, and control cables 20 with various diameters can be inserted into the cable hole 11 as described above. Further, by attaching a spacer 13 to the cable hole 11 into which the control cable 20 is not inserted, a small object is prevented from entering the cubicle 50 from the cable hole 11. Here, the spacer 13 is made of rubber and includes a flat plate portion 13a and a frustoconical mounting portion 13b formed at the center of the flat plate portion 13a as shown in FIG. Then, by inserting and press-fitting the mounting portion 13 b into the main hole portion 11 a of the cable hole 11, the spacer 13 can be mounted in the cable hole 11, and no gap is generated between the mounting portion 13 b and the cable hole 11. It has become.

  Next, the filling part 12 is filled with silicone. Specifically, as shown in FIG. 9, the tip of the discharge pipe 81 of the pump 80 is attached to the filling plug 72, and the suction pipe 82 of the pump 80 is placed in a tank (not shown) in which silicone is stored. Connecting. In this state, the lever 83 of the pump 80 is operated to feed the silicone in the tank into the filling unit 12. Thereby, for example, as shown in FIG. 7, the silicone C flows in the filling portion 12 in the direction of the arrow.

  Then, after confirming that the silicone has spread in all the filling parts 12 and that the air in all the filling parts 12 has escaped, the stopper plate 70 is permanently fixed to the bottom plate 52 of the cubicle 50 with screws 71 and fixed. Thereafter, silicone is further fed by the pump 80 to fill the entire filling portion 12 with silicone. At this time, a pressure gauge for measuring the filling pressure (feeding pressure) may be provided in the pump 80, and the feeding of silicone may be stopped when the filling pressure reaches a predetermined pressure.

  After filling all the filling parts 12 with silicone in this way, the filling operation is stopped, the filling plug 72 is removed, and a sealing plug (not shown) is inserted and attached to the opening of the filling part 12. Here, the sealing plug has a substantially cylindrical shape in which the filling portion 12 side is tapered, and can be press-fitted into the opening of the filling portion 12.

  By such filling, as shown in FIG. 10, the filling portion 12 expands toward each cable hole 11, and the peripheral edge 11 c of the cable hole 11 is in close contact with the control cable 20. Thereby, there is no gap on the outer peripheral side / outer peripheral surface of each control cable 20. Thereafter, the silicone is solidified over time, and the adhesion between the peripheral edge 11c of the cable hole 11 and the control cable 20 is fixed and stabilized.

  As described above, according to the intrusion prevention mat 10 and the small object intrusion prevention method, the cable insertion port 51 is covered with the intrusion prevention mat 10 and there is no gap on the outer peripheral side of each control cable 20. . For this reason, it becomes possible to reliably prevent insects and the like from entering the cubicle 50 from the cable insertion port 51. In addition, since the control cables 20 having different diameters can be inserted into the cable holes 11, the peripheral edges 11 c of the cable holes 11 are connected to the control cables 20 even when the control cables 20 having various diameters are arranged in the plurality of cubicles 50. It is possible to reliably prevent insects and the like from invading.

  Moreover, since it is only necessary to attach the intrusion prevention mat 10 and fill the filling portion 12 with silicone, the work can be easily and quickly performed. In addition, since the cable holes 11 are formed at predetermined intervals, the plurality of control cables 20 can be inserted and arranged in an orderly manner, and the insertion work of the control cables 20 is facilitated. Furthermore, since the intrusion prevention mat 10 can be cut into a desired size and shape, by inserting the intrusion prevention mat 10 in accordance with the opening surface of the cable insertion port 51, cables of various sizes and shapes can be inserted. The opening surface of the mouth 51 can be closed, and versatility is high.

  On the other hand, if it is necessary to dispose the additional control cable 20 after the control cable 20 is disposed at one end, the spacer 13 is removed and the control cable 20 is inserted into the cable hole 11 in which the spacer 13 is mounted. That's fine. That is, it is possible to easily cope with future expansion of the control cable 20. In this case, it is possible to reliably prevent insects and the like from entering by filling the putty between the cable hole 11 and the control cable 20.

  The embodiment of the present invention has been described in detail above, but the specific configuration is not limited to the above-described embodiment, and even if there is a design change or the like without departing from the gist of the present invention, It is included in this invention. For example, in the above embodiment, the filling portion 12 has a lattice shape, and the periphery of the cable hole 11 comes into close contact with the control cable 20 due to the expansion of the filling portion 12. It may be expanded so as to be in close contact with the control cable 20. That is, as shown in FIG. 11, the intrusion prevention mat 100 is configured by overlapping two sheets, and the two sheets are thermally welded at the main hole portion 11 a and the cut portion 11 b of each cable hole 11. Join with. Thereby, all parts other than the cable hole 11 become the filling part 112, and by filling the filling part 112 with silicone, the peripheral edge itself (filling part 112) of the cable hole 11 expands and comes into close contact with the control cable 20. Is.

  Further, although the control cable 20 having a different diameter can be inserted by the cut portion 11b, the main hole portion 11a itself can be expanded and contracted, and the main hole portion 11a having a different diameter may be provided. Furthermore, although silicone is used as the fluid and filler, other materials such as epoxy resin may be used as long as they have fluidity and filling properties, and preferably have solidification properties.

10 Small object intrusion prevention mat 11 Cable hole 11c Edge 12 Filling portion 20 Control cable (cable)
C Silicone (fluid)
50 cubicles (electrical equipment)
51 Cable insertion slot

Claims (4)

A mat for preventing small objects from entering small electrical objects such as small animals and plants from the cable insertion opening into electrical equipment such as cubicles and control panels with cable insertion openings. There,
The whole is sheet-like, and its plane is larger than the opening surface of the cable insertion port,
A plurality of cable holes through which the cable can be inserted through the plane are formed,
A filling portion is formed on the outer peripheral side of the cable hole, which is filled with fluid and expands toward the cable hole side by filling the fluid so that the peripheral edge of the cable hole is in close contact with the cable. A mat for preventing small objects from entering equipment.   The mat for preventing small objects from entering electric equipment according to claim 1, wherein cables having different diameters can be inserted into the cable holes.   The mat for preventing small objects from entering an electrical equipment according to any one of claims 1 and 2, wherein the mat can be cut into a desired size and shape on the plane.   The small object intrusion prevention mat according to any one of claims 1 to 3, wherein the cable holes are formed at a predetermined interval.

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