JPH1066221A - Wiring duct - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form an opening at an appropriate position in a duct side surface with a simple tool, by forming a duct body out of a bottom plate and right and left side plates, and U-shaped fragile parts at prescribed intervals in the longer direction of a duct at the side plate. SOLUTION: A duct body 1 consists of a bottom plate 2, right and left side plates 3, 3, and right and left upper plates 4, 4 formed by folding its upper end. Vertical slits 5 are formed intermittently at the side plates 3, 3 and at prescribed intervals in the longer direction. U-shaped fragile parts 6 are formed with horizontal slits 5 formed at the lower part of adjacent vertical slits 5. At the upper plates 4, 4, the slits 5 are formed in the shorter direction of the duct and at the same positions in the longitudinal direction and intervals as the vertical slits 5, and fragile parts 7 which are continuous to the U-shaped fragile part and in parallel are formed. The portion between the fragile parts 7 in parallel on the top surface of the duct at the positions where openings are formed is clamped with a tool such as pliers to cut off the upper plate part and the side plate part. It is thus possible to form an opening for cable with a simple tool.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring duct for laying a power supply from a distribution board to a processing facility, for example, in a factory.

[0002]

2. Description of the Related Art When a cable accommodated in a wiring duct is branched, an opening 10 is provided in a side plate of a main duct 8 as shown in FIG.
1 was branched and stored in the sub duct 9. In addition, 1
2 is a cover.

[0003]

However, according to the above-mentioned prior art, an electric tool such as an electric saw is used to provide the opening 10 in the side plate of the main duct 8 during the duct installation work. In addition, even after the duct is installed, if a branch point is added or changed, a similar operation is performed to provide the opening 10 in the side plate of the main duct 8. As a result, workability was poor, and swarf was generated, and the work environment was not good.

[0004] Reference number = 14776
(2) The present invention has been made in view of the above circumstances, and an object thereof is to provide an opening capable of branching a cable at an appropriate position on a side surface of a duct with a simple tool such as pliers. Things.

[0005]

According to the first aspect of the present invention, the duct body comprises a bottom plate and left and right side plates,
U-shaped fragile portions are formed on the side plate at predetermined intervals in the duct length direction. Therefore, the operator can easily cut off the side plate portion surrounded by the U-shaped fragile portion.

According to the configuration of the second aspect, the upper ends of the left and right side plates are bent inwardly to form upper left and right plates, and the upper plates are arranged in parallel so as to be continuous with the U-shaped fragile portion. The fragile part is formed. Therefore, even in the case of a wiring duct having an upper plate at the upper ends of the left and right side plates, the upper plate portion sandwiched between the side plate portions surrounded by the U-shaped fragile portions and the parallel fragile portions can be easily cut off. Therefore, the above claim 1
Is obtained.

According to the third aspect of the present invention, the U
The fragile portion in the shape of a letter is constituted by slits formed intermittently. Therefore, it can be easily cut out along the slit. Thus, the preferred means of the first or second aspect is obtained.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a wiring duct according to the present invention will be described below with reference to the drawings. As shown in FIGS. 1 to 3, a metallic duct body 1 has a bottom plate 2, left and right side plates 3, 3 and left and right upper plates 4, 4 formed by bending the upper ends of the left and right side plates 3, 3 respectively. Consists of

Reference number = 14776
(3) As shown in FIG. 2, slits 5 are provided intermittently in the side plates 3 and 3 in the vertical direction, and the vertical slits 5 are formed at predetermined intervals in the duct length direction. Further, a horizontal slit 5 is provided below the adjacent vertical slit 5, and the adjacent vertical slit 5 and horizontal slit 5 constitute a U-shaped weak portion 6.

As shown in FIG. 3, slits 5 are also provided in the upper plates 4 and 4 in the short direction of the duct.
Are formed at the same position and at the same interval in the duct length direction as the vertical slits 5 provided on the side surfaces 3 and 3.
By the slits 5 adjacent to the upper plates 4, 4, a parallel weak portion 7 which is continuous with the U-shaped weak portion 6 is formed. A plurality of the U-shaped fragile portions 6 and the parallel fragile portions 7 are formed at predetermined intervals in a duct length direction.

Next, an operation for providing an opening for cable branching in the duct main body 1 will be described. An operator uses a tool such as pliers to attach a portion between the parallel fragile portions 7 on the upper surface of the duct corresponding to a location where the opening is provided. To cut off the upper plate and side plate of the duct surrounded by the parallel weakened portion 7 and the U-shaped weakened portion 6.

[0012]

Another embodiment will be described below. The fragile portion is constituted by the slit 5, but may be constituted by a thin cutout groove. Although the duct main body 1 is made of metal, a material such as resin may be used. The duct body 1 may be covered. The interval between the U-shaped fragile portions 6 in the duct length direction may be constant or may be different.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a schematic configuration of a wiring duct according to an embodiment of the present invention. Reference number = 14776
(4)

FIG. 2 is a side view of the wiring duct.

FIG. 3 is a plan view of the wiring duct.

FIG. 4 is a perspective view showing a conventional wiring duct.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Duct main body 2 Bottom plate 3 Side plate 4 Upper plate 5 Slit 6 U-shaped weak part 7 Parallel weak part 8 Main duct 9 Sub duct 10 Opening 11 Cable 12 Cover

Claims (3)

[Claims] 1. A wiring duct in which a duct main body is composed of a bottom plate and left and right side plates, and a U-shaped fragile portion is formed on the side plate at intervals in a duct length direction. 2. The upper and lower plates are formed by bending the upper ends of the left and right side plates inward, and the upper plate is formed with a parallel weak portion continuous with the U-shaped weak portion. Item 1
The described wiring duct. 3. The wiring duct according to claim 1, wherein the U-shaped fragile portion is constituted by a slit formed intermittently.