JPH04114717U - electrical conduit - Google Patents

Abstract

(57) [Summary] [Purpose] By screwing bolts (wood screws) or driving nails only into the top surface of the joists or beams, it is possible to easily work on one side of the joists or beams. To provide a conduit in which a wire protection tube can be installed without substantially impairing the strength of a beam or the like. [Structure] It is characterized by having an electric wire passage tube part placed on one side of the joist or beam, and a horizontal plate part fixed to the top surface of the same joist or beam with bolts (wood screws), nails, etc. .

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to electrical conduits and can be used when electrical wires are installed on one side of ceiling joists or beams. It is used for

0002

[Conventional technology]

For indoor wiring, the space under the ceiling is often used; In many cases, exhaust ducts, water and sewage pipes, etc. are installed in the Each installation space can be set so that there is no interference with the electric wires. is necessary.

0003 However, electric wires are thinner than exhaust ducts, water and sewage pipes, etc. Because it does not require a lot of space, you can run the wires on one side of a ceiling joist or It may be fixed with a teppuru. In particular, when there are a large number of wires, as shown in Figure 8, Then, attach the conduit B' to one side of the joist or beam A' with the bracket fitting 6' and nails or bolts, etc. 71', 72', etc., and the electric wires are drawn into these conduit tubes.

0004

[Problem that the idea aims to solve]

However, it is not possible to screw bolts (wood screws), nails, etc. into the sides of joists or beams, etc. In order to type, I have no choice but to bend over in an unreasonable position, which makes the work difficult. Ru.

[0005] Also, attach the bracket metal fitting 6' to the side of the joist or beam A' with bolts (wood screws), nails, etc. To fix it, use bolts (wood screws) at the top and bottom of the sides of A', such as a joist or beam. , it is necessary to screw or drive nails 71', 72', etc., and due to the load of the worker etc. For this reason, bolts should be placed not only on the compression side of the bending that the joist or beam A' undergoes, but also on the tension side. (wood screws) or nails must be driven in, and the There is a concern that the strength will decrease.

[0006] In recent years, in the construction of general housing, buildings are made into units, and the units are built in factories. The prefabricated construction method, in which units are manufactured, transported to the site, and joined together, shortens the construction period. Although it is attracting attention as a means of shortening the The attached structure has poor workability and is unsuitable for the prefabricated construction method described above.

[0007] In the prefabricated construction method mentioned above, a work scaffold is temporarily constructed on top of the joists or beams, etc. Units are joined using scaffolding as a base, but the sides of the joists or beams mentioned above In a structure where the conduit is installed on a surface, bolts (wooden screws) on the lower side of the joists or beams, etc. ) or a decrease in the bending strength of joists, beams, etc. due to nails, even if only to a certain degree, is unavoidable. , or attaching conduit to the side of the joist in the factory can increase the speed of the production line. Because of this, it is extremely difficult to pre-install electrical conduits on the sides of the joists in the factory. Therefore, it is unsuitable for the above prefabricated construction method.

[0008] The purpose of this invention is to screw bolts (wood screws) only into the top surface of joists or beams. Alternatively, by driving nails, it is possible to easily attach a wall to one side of a joist or beam with good workability. A conduit where a wire protection pipe can be installed without substantially reducing the strength of the joists or beams, etc. Our goal is to provide the following.

[0009]

[Means to solve the problem]

The electrical conduit of the present invention has a wire insertion pipe section placed on one side of the joist or beam, and the same as the above joist. Alternatively, a horizontal plate part fixed to the top surface of the beam with bolts (wood screws), nails, etc. This configuration is characterized by having the following features.

0010

[Effect]

Fixing with bolts (wood screws) or nails to the upper surface of horizontal plate joists or beams, etc. The wire insertion tube is placed on one side of the joist or beam, etc., and the bolt (wood screw) Easy to screw in or drive nails into, and has excellent workability. Also, horizontal plate The weight of the electric wire insertion tube and electric wire is supported for hanging on the upper surface of the joists or beams, etc. The number of bolts (wood screws) or nails used can be reduced, or the number of bolts (wood screws) or nails can be reduced. The length of bolts (wood screws) or nails, etc. can be shortened, and bolts (wood screws) or nails, etc. Or, since it is only screwed or driven into the bending compression side of the beam, etc., the joist Alternatively, the bending strength of beams, etc. can be maintained substantially unchanged.

[0011]

【Example】

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of the present invention.

0012 In Figure 1, 1 is the horizontal plate part, which has bolt (wood screw) tightening holes or nail holes. 11,... 2 is a wire insertion tube section, and this wire insertion tube section 2 is connected to a horizontal plate. The plate part 1 is connected to the vertical plate part 3, and the vertical plate part 3 and the horizontal plate part 3 are connected to each other by a vertical plate part 3. The rate portion 1 is perpendicular to the rate portion 1.

[0013] One side of a joist or beam, etc. of a building where electric wires and cables are being constructed using the above electric conduits. In order to install the cable in the cable, pass the wire/cable through the wire insertion tube in advance, and then Hang the horizontal plate part 1 on the upper surface of the joists or beams A so that the joists or beams Bolt (wood screw) horizontal plate part 1 from above A to the top surface of joist or beam A. Alternatively, fix it with nails 4, etc., and this completes the arrangement of the electric wires and cables.

[0014] The installation of the above electric conduit to the joists or beams, etc. is done during the construction of the building. After installing electrical conduits to beams, etc., lay scaffolding boards on top of the joists or beams, etc., and Connecting the units of a brehab housing based on the field.

[0015] When installing the above-mentioned conduits to the joists or beams, Since the weight of the bull is supported by the joist or beam A by the horizontal plate part 1, The number of bolts (wood screws) or nails 4,... can be reduced, or the number of bolts (wood screws) or nails 4,... can be reduced. The length of the nails 4,... can be shortened, and in addition, the length of the nails 4,... A bolt (wood screw) is screwed or a nail is driven only into the compression area of the bending that A experiences. In the tensile area, the torsion of the bolt (wood screw) or nail 4,... There is no driving or driving, and the bending strength of the joists or beams A remains virtually unchanged. Because it can be held tightly, the safety of the joists or beams A against the above-mentioned scaffold loads is well guaranteed. can.

[0016] Ceiling boards such as fireproof boards will eventually be laid on the joists or beams A mentioned above. . The conduit is molded from plastic. The thickness of the horizontal plate portion 1 is such that it does not interfere with the installation of the ceiling board and is suitable for the installation of electric wires. It must be set so that it can withstand the weight of the cable, and is usually 3 mm.

[0017] The length of the above electric conduit is slightly shorter than the length of the joist or beam, for example , it is preferable to set the joist length to 2000 mm, compared to the normal joist length of 2460 mm. At the tip of the horizontal plate section 1, there is a joist or beam, etc., as shown in Fig. 3 (A). It is also possible to form a claw 12 that is locked on the upper end corner a of A. This claw 12 is shown in FIG. Tilt it inward as shown in (b), and forcibly bend this claw 12 outward to remove the joist. Alternatively, it can also be fitted onto a beam or the like.

In the above electric conduit, the width of the horizontal plate portion 1 is selected according to the dimensions of the joist or beam, and the inner diameter of the electric wire insertion tube portion 2 is selected according to the number of electric wires to be used. In this case, as shown in FIG. 4, the support member _A0 consisting of the horizontal plate part 1 and the vertical plate part 3 and the wire insertion tube member 2 are connected with adhesive or bolts (wood screws) 5, etc. Therefore, as many as n×m types of electric conduit tubes can be obtained from n types of support members and m types of electric wire insertion tube members.

[0019] The shape of the wire insertion tube is triangular or quadrilateral, as shown in Figure 5 (a) and (b). It can also be made into a rectangular shape such as a rectangular shape, or it can be made into a vertical planar shape as shown in FIG. 5(c). It is also possible to make the center line of the top portion 3 coincide with the center of the wire insertion tube portion 2.

[0020] The conduit of the present invention can also be used as a short product B as shown in Figure 6, in which case , as shown in Fig. 7, insert the conduit B into the electric wire W at a predetermined interval, and It is preferable to bind the wire portions with adhesive tape or the like.

[0021]

[Effect of the idea]

The conduit of the present invention has the configuration as described above, and the horizontal plate part is connected to the joist or beam. It can be fixed with bolts (wood screws) or nails, etc. on the top surface of the It can be fixed by screwing in wood screws or nails, making it easy to work with. There is. Therefore, it is well suited for prefabricated construction methods. Also, the electric wires can be inserted at the horizontal plate. Bolts (wood screws) or nails can be used to support the weight of the pipe passage and electric wires/cables. The number of bolts (wood screws) or nails used can be reduced, or the length of bolts (wood screws) or nails can be shortened. Insert bolts (wood screws) or drive nails only into the bending compression side of joists or beams. Because it is only necessary to bend the joists or beams, the bending strength of the joists or beams can be maintained well, and the joists or beams can be Prefabricated housing units can be joined together using beams, etc. as scaffolding.

[0022] Furthermore, it can be installed on joists in a short time, and the line speed can be increased even on production lines in factories. It can be attached to the joists without disturbing the joists and can be attached to the joists on the production line in the factory. Installation is now possible.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing the embodiment of FIG. 1 in use.

FIG. 3 is a front view showing another embodiment of the present invention.

FIG. 4 is a front view showing another embodiment of the present invention.

FIG. 5 is a front view showing another embodiment of the present invention.

FIG. 6 is a perspective view showing another embodiment of the present invention.

FIG. 7 is a perspective view showing the embodiment of FIG. 6 in use.

FIG. 8 is a perspective view showing a conventional example.

[Explanation of symbols]

1 Horizontal plate section 11 Bolt (wood screw) insertion hole or nail hole 2 Wire insertion tube section

Claims (1)

[Scope of utility model registration request] Claim 1: An electric conduit characterized by having an electric wire insertion tube section disposed on one side of a joist or beam, and a horizontal plate section fixed to the upper surface of the same joist or beam with bolts, nails, etc. .