JPS598404Y2 - cable rack - Google Patents

Description

[Detailed description of the invention] This invention relates to the improvement of cable racks that are installed when piping and wiring wiring materials such as conduits and cables in building structures. The aim is to improve efficiency.

In other words, in this invention, holding protrusions that are orthogonal to the wiring direction of the wiring material are protruded at appropriate intervals on the inner upper surface of a child girder member that is shaped like a band, and each child is placed between the holding protrusions. In addition to providing a large number of punched holes for installing various components on the girder member surface, parent girder members are erected on both sides of the child girder member, and the upper ends of the parent girder members have an inverted L-shaped cross section that is protruded inwardly from each other. It is characterized by having a reinforcing edge and being integrally formed entirely of aluminum and hard plastic resin.One embodiment of this invention will be explained below with reference to the drawings. be.

In the figure, reference numeral 1 indicates a belt-shaped sub-spar member, and on the inner upper surface of this sub-spar member 1, holding protrusions 2 are provided at appropriate intervals, perpendicular to the wiring direction of the required wiring materials C such as conduits and cables. Place and erect.

Reference numeral 3 denotes parent girder members erected on both sides of the child girder member 1, and the cross-sectional shape of the girder member 3 is preferably shaped into an inverted L-shape or a T-shape to provide reinforcement to prevent deformation or the like.

Reference numeral 4 denotes a large number of punched holes regularly or irregularly arranged at appropriate intervals on the member surface of the child spar member 1, and for example, the wiring material C that is drawn through the child spar member 1. Furthermore, it is used to attach and install various electrical equipment materials, and is not limited to a substantially rectangular shape, but can be selected from any shape such as a circle, an ellipse, or a square.

A large number of punched holes 4 are provided on one surface of the sub-girder member between each of the holding protrusions 2, and in the illustrated example, the punched holes 4 are approximately oval shaped along the wiring direction between the holding protrusions 2. A case is shown in which the cable fixing bands 4 are arranged in parallel, and in such a case, the parallel relationship is utilized to be extremely effective for use as a cable fixing band as shown in FIG.

A reinforcing edge 5 having an inverted L-shaped cross section and projecting inwardly is provided along the upper end of the main girder member 3, and this reinforcing edge 5 itself is integrated with the parent girder member 3, and is attached to the child girder member. 1. It is formed simultaneously when the main girder member 3 is integrally formed.

Therefore, the holding protrusion 2 protruded on the inner upper surface of the child beam member 1
As shown in FIGS. 1 to 3, the surface of the member may be curved in an arc shape to stand out, or as shown in FIG. 4, it may be integrated with the member and protruded.

Further, the cross-sectional shape may have an appropriate shape, and the length of the holding protrusion 2 may be approximately the same as the width shell of the child beam member 1, or may be made by dividing this width appropriately. Cable racks are planned to be made of aluminum, hard synthetic resin, etc., and for example, laminates of hard polyvinyl chloride resin (hard P.V.C.), unsaturated polyester, and glass fiber reinforcement are mainly used. It is integrally formed using reinforced plastic (F.R.P.) or the like using an extrusion forming method or other appropriate forming method.

Thus, if hard synthetic resin is used as a material, impact resistance,
It aims to improve electrical insulation and voltage resistance, and is extremely suitable for installation in places susceptible to atmospheric pollution, such as sewage treatment plants, chemical plants, tunnels, and subways.

This invention is constructed as described above, and the holding protrusions 2 are provided on the inner upper surface of the child girder member 1 so as to be perpendicular to the wiring direction of the wiring material C, so that the required number of conduits, cables, etc. When pulling in the wiring material C, it is possible to slide it on the top surface of the holding protrusion 2 and wire it smoothly.

This is because the contact area between the wiring material C and the member surface of the sub-girder member 1 is made extremely small, and the surface resistance is reduced.

In particular, when the band-shaped sub-girder member 1 and the main girder member 3 are integrally formed into a substantially groove-shaped cross section by an extrusion forming method or the like, the inside surface of the storage part when wiring the wiring material C is This is effective in reducing the sheet resistance and can further improve the efficiency of wiring work.

Further, it can be expected that the robustness of the child beam member 1 will be increased by the raised holding protrusions 2.

In addition, it is easy to install various accessories using the punched holes 4, and as shown in FIG. It is fixed with a band or the like that is inserted through it, and it goes without saying that it is easy to install various electrical equipment materials, and the overall weight can also be reduced.

In addition, since the punched holes 4 themselves are arranged on one side of each sub-girder member between the holding protrusions 2, wiring materials C through which wires are drawn, and various electrical equipment materials can be installed in the sub-spar members. This is done at a certain position on one surface, and not only does it ensure a secure and firm fixation state, but even if the cable itself is flexible, it is placed on the one surface of the sub-girder member. It does not sag, and if necessary, it is easy to change the route on one side of the sub-girder member, and the wire running state is extremely aesthetically pleasing.

In other words, since such cable racks are usually installed at high places inside and outside of building structures, when viewed from below after installation, only the outer surface of the bottom part of the sub-girder member 1 is visible and the appearance is very good. Yes, and its support is stable.

On the other hand, the reinforcing edge 5 with an inverted L-shaped cross section along the upper end of the main girder member 3 aims to reinforce the main girder member 3 itself, and prevents it from becoming distorted due to the load of various electrical equipment materials including the wiring material C. In particular, since the entire material is made of aluminum, hard synthetic resin, or resin, the inherent mechanical strength weaknesses of the material are corrected, and its strength and robustness are improved. A significant increase is being planned.

As explained above, according to this invention, by providing the protrusions on the inner surface of the child beam member, it is possible to reduce the sheet resistance when drawing the wiring material C,
It is easy to pull in, eliminates the gap that greatly contributes to the efficiency of wiring work, makes it easy to install various electrical equipment materials, has a simple structure, increases robustness, and is even more durable than conventional cable racks of this type. It is possible to realize a reduction in the weight of the cable, which in turn can be expected to improve the efficiency of the installation work, which has beneficial effects in practical terms.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention; Fig. 1 is a partially omitted perspective view, Fig. 2 is a vertical sectional view along the length direction of the cable rack, and Fig. 3 is a view in the width direction of the cable rack. 4 is a longitudinal sectional view taken along the length direction of a cable rack in another embodiment, and FIG. 5 is a longitudinal sectional view taken along the width direction of the cable rack in use. C... Wiring member, 1... Child spar member, 2... Holding protrusion, 3... Main girder member, 4... Punching hole, 5... Reinforcement edge.

Claims (1)

[Scope of utility model registration request] Holding protrusions that are orthogonal to the wiring direction of the wiring material are provided at appropriate intervals on the inner upper surface of the sub-spar member shaped like a band, and various types of material are applied to the surface of each sub-spar member between the holding protrusions. In addition to providing a large number of punched holes for installing members, parent girder members are erected on both sides of the child girder member, and reinforcing edges with an inverted L-shaped cross section that are protruded inward from each other are installed on the upper ends of the parent girder members. A cable rack characterized in that the entire cable rack is made of aluminum, hard composite or resin and is integrally shaped.