JP2741805B2 - Bus duct - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bus duct used for electric wiring.

[0002]

2. Description of the Related Art There is a bus duct used for electric wiring. 7 and 8 respectively show the internal configuration of a conventional bus duct. These bus ducts 51, 61
Are provided with long power supply conductors 52 and 62 and insulators 53 and 63 holding the power supply conductors 52 and 62 outside, and a pair of long cover bodies (outer plates) facing each other and wrapping the outsides of the insulators 53 and 63. 54 and 64 are provided.

In the bus duct 51, an uneven fitting structure is provided on the elastic side surface portion of the cover body 54, and the elastic structure of the cover body 54 is engaged by utilizing the elasticity of the side surface portion. Are combined. On the other hand, in the bus duct 61, the cover 64 having the same cross-sectional shape is used.
The two cover bodies 64 are joined by fastening a flange 64a formed on the side surface portion together with a screw 66 and a nut 67.

After the bus ducts 51 and 61 have been installed, the power supply conductors 5 are located at appropriate positions on the covers 54 and 64.
There is an opening through which the power supply conductors 52, 62 are plugged, and various wiring devices are attached to the power supply conductors 52, 62 so as to be electrically connected thereto. However, in the case of the bus duct 51, there is a problem that component manufacturing costs are high. It is necessary to prepare two types of long cover bodies having different cross-sectional shapes, which is troublesome and increases costs. On the other hand, in the case of the bus duct 61, there is a problem that the assembly cost is high. Although only one kind of long cover body needs to be prepared, the connection method using screws or rivets is troublesome and greatly increases the assembly cost.

[0005]

SUMMARY OF THE INVENTION In view of the above circumstances, it is an object of the present invention to provide a bus duct having not only low component manufacturing costs but also low assembly costs.

[0006]

In order to solve the above-mentioned problems, a bus duct according to the present invention comprises a power supply conductor and an insulator (insulating material) for holding the power supply conductor outside, and a pair of conductors wrapping the outside of the insulator so as to face each other. Both cover bodies have the same cross-sectional shape having an inward hook portion protruding inward on one side portion and an outward hook portion protruding outward on the other side portion, respectively. In a state in which the hooks face each other, the inward hook portions of one cover body are engaged with the outward hook portions of the other cover body by utilizing the elasticity of the both side portions to be connected to each other.

[0007]

The bus duct of the present invention has a low component manufacturing cost. This is because a pair of cover bodies that surround the outside of the insulator have the same cross-sectional shape, and only one type of cover body needs to be prepared. In addition, the bus duct of the present invention has a low assembly cost. The two cover bodies each have an inward hook portion projecting inward on one side surface portion and an outward hook portion projecting outward on the other side surface portion. This is because the inward hook portions of one of the cover members are fitted into and engaged with the outward hook portions of the other cover member by utilizing the elasticity of the first and second cover members so that they can be connected to each other.

[0008]

Embodiments of the present invention will be described below. It goes without saying that the present invention is not limited to the following embodiments.
FIG. 1 shows an internal configuration of the bus duct of the embodiment. Each of the bus ducts 1 includes three long power supply conductors 2.
, And insulators (insulating materials) 3, 3 for holding them outside, and a pair of long cover bodies (outer plates) 4, 4 facing each other and wrapping the outside of each insulator 3. . That is, the power supply conductor 2 is held by the insulator 3 interposed between the cover bodies (outer plates) 4.

The cover members 4, 4 have the same cross-sectional shape and are connected in the opposite directions. That is, the cover members 4, 4
Each has an inward hook portion 41a protruding inward on one side surface portion 41, and an outward hook portion 42a protruding outward on the other side surface portion 42, respectively. When connecting the two cover bodies 4, 4, the side portions 4 with the outward hook portions 42 a are faced to each other.
2 is pushed into the inside of the side surface portion 41 having the inward hook portion 41a.
Due to the elasticity of 2, the inward hook portion 41a of one cover body naturally engages with the outward hook portion 42a of the other cover body to complete the connection. In addition, it is preferable that the extension portion 41b is provided because the engagement is difficult to be released.

The assembling of the bus duct 1 is performed as follows. First, as shown in FIG. 2, the insulator 3 is placed inside one cover body 4. Half of the plate-shaped power supply conductor 2 is housed in the groove 3 a of the insulator 3. Subsequently, as shown in FIG.
Is mounted so that the other half of the power supply conductor 2 is accommodated in the groove 3a.

Finally, as shown in FIG. 4, the other cover body 4 is turned upside down so as to face each other, and the side portion 42 having the outward hook portion 42a is placed inside the side portion 41 having the inward hook portion 41a. If you insert and push it, both sides 4
Due to the resilience of the first and second cover members 42, both side portions 41 and 42 open and close appropriately, and the inward hook portion 41a and the outward hook portion 42a pass over the shoulder of the insulator 3 to engage with each other, and both cover members 4, 4 are combined.

Note that the insulators 3 need not be located at the same position, but may be provided at some places along the longitudinal direction. It is not necessary to have insulators at both the top and bottom at the same position, and the insulators may be arranged to be shifted back and forth as viewed from the longitudinal direction. Further, the insulators 13 as shown in FIG. 5 may be arranged alternately along the longitudinal direction. Further, by adjusting the size so that the surfaces of the insulators 3 and 13 abut against the inner surface of the cover body 4, the positioning and holding of the insulator 3, that is, the positioning and holding of the power supply conductor 2 are performed.

In the state after the construction of these bus ducts 1,
For example, as shown in FIG.
An opening (plug-in hole) 21 through which the power supply conductor 2 is viewed is provided at an appropriate position on the cover body 4. In such an opening, as shown in FIG. It will be attached so that it may be connected to it. In order for the power supply conductor 2 to be seen through the opening 21, no insulator may be provided at that portion.

[0014]

As described above, in the bus duct according to the present invention, since only one type of cover is prepared, the cost for manufacturing parts is low, and the two covers are opposed to each other when assembled. It is very useful because the assembly cost is low because it is connected by a fitting-type engagement that only pushes in a state in which it is pushed.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating an internal configuration of a bus duct according to an embodiment.

FIG. 2 is a cross-sectional view illustrating an initial stage of an assembling process of the bus duct of the embodiment.

FIG. 3 is a sectional view showing an intermediate stage of an assembling process of the bus duct of the embodiment.

FIG. 4 is a sectional view showing a final stage of an assembling process of the bus duct of the embodiment.

FIG. 5 is a cross-sectional view illustrating an internal configuration of a bus duct according to another embodiment.

FIG. 6 is a perspective view showing a construction state of the bus duct of the embodiment.

FIG. 7 is a sectional view showing an internal configuration of a conventional bus duct.

FIG. 8 is a cross-sectional view showing the internal configuration of another conventional bus duct.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bus duct 2 Power supply conductor 3 Insulator 4 Cover body 41 Side part 41a Inward hook part 42 Side part 42a Outward hook part

Continuation of the front page (56) References Japanese Utility Model Showa 50-55198 (JP, U) Japanese Utility Model Showa 50-55199 (JP, U) Japanese Utility Model Showa 50-59600 (JP, U) Japanese Utility Model Showa 52-78792 (JP) , U) Japanese Utility Model Showa 52-109594 (JP, U) Japanese Utility Model Showa 60-141623 (JP, U) Japanese Utility Model Showa 39-14236 (JP, Y1)

Claims (1)

(57) [Claims] A power supply conductor and an insulator for holding the power supply conductor on the outside are provided, and a pair of cover bodies facing each other and wrapping the outside of the insulator are provided. The hook portion has the same cross-sectional shape each having an outward hook portion protruding outward on the other side portion, and the inward hook portion of one cover body is used by utilizing the elasticity of both side portions while facing each other. Bus ducts connected to each other by engaging with outward hook portions of the other cover body.