JPH05219683A - Noise-proof cover for low-noise type rotating electric machine - Google Patents

Abstract

PURPOSE:To disassemble a noise-proof cover without disassembling a power source lead and an auxiliary lead at disassembly of the noise-proof cover of a low-noise rotating electric machine. CONSTITUTION:An upper noise-proof cover 2 and lower noise-proof covers 23, 24, 25, and 26 can be disassembled without disassembling a power source lead 4 or an auxiliary lead 6 by making said power source lead 4 and auxiliary lead 6 pierce the body, covering the section where the power source lead 4 or the auxiliary lead 6 pass the bottom of the body of a rotating electric machine and its vicinity, and providing the noise-proof cover pieces 21 and 22, which are constituted severally freely of disassembly and assembly to other noise-proof covers 23, 24, 25 and 26, and separating the noise-proof cover pieces 21 and 22 at disassembly of the noise-proof covers.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soundproof cover for covering a low noise type rotary electric machine body.

[0002]

2. Description of the Related Art FIG. 3 is a block diagram of a conventional low noise type rotary electric machine provided with a soundproof cover, and FIG. 4 is a sectional view taken along line IV-IV of FIG. In the figure, the rotating electric machine body 1 is covered with an upper soundproof cover 2, and the bottom portion of the rotating electric machine body 1 has a lower soundproof cover 12 through which the power supply lead 4 drawn from the main terminal box 3 penetrates.
It is covered with a lower soundproof cover 13 for penetrating the auxiliary lead 6 drawn out from the auxiliary terminal box 5, and other lower soundproof covers 11 and 14. Lower soundproof cover 11, 12, 13, 1
Reference numeral 4 is connected to the upper soundproof cover 2 by bolts. The auxiliary lead 6 is a control wiring such as a temperature measuring sensor for the winding or a vibration meter for the bearing. In FIG. 4, the lower soundproof cover is composed of four plates, and the lower soundproof cover 12 is provided with a power supply lead through hole 15 through which the power supply lead 4 penetrates.
The lower soundproof cover 13 has an auxiliary lead through hole 16 that allows the auxiliary lead 5 to pass therethrough.

When assembling the soundproof cover, the main terminal box 3
After assembling the rotary electric machine main body 1 with the auxiliary terminal box 5 attached, the rotary electric machine main body 1 is installed at a predetermined position. Next, the lower soundproof covers 11, 12, 13, 14 are attached to the rotating electric machine main body 1, and in this state, the power supply lead 4 or the auxiliary lead 6 is connected to the main terminal box 3 or the auxiliary terminal box 5 respectively.
To the rotary electric machine main body 1 with the upper soundproof cover 3 at the end.
To cover the upper soundproof cover 2 and the lower soundproof covers 11, 12,
13 and 14 are connected with a bolt.

[0004]

In the conventional structure, when disassembling the upper soundproof cover 2 and the lower soundproof covers 11, 12, 13, 14 after removing the upper soundproof cover 2, the lower soundproof covers 11, 12 are removed. It is necessary to disassemble the power supply lead 4 and the auxiliary lead 6 before disassembling the wires 13, 13 and 14. Since these leads are used to insulate the electric wires and pack them in a conduit, removing the insulation is considerably troublesome. It had the drawback of taking a long time.

An object of the present invention is to provide a soundproof cover which can be disassembled without disassembling the power supply lead and the auxiliary lead when disassembling the soundproof cover of the low noise type rotary electric machine.

[0006]

A low noise type rotary electric machine having an upper soundproof cover for covering a main body of a rotary electric machine and a lower soundproof cover for covering a bottom portion of the main body of the rotary electric machine and penetrating a power supply lead and an auxiliary lead respectively. In the soundproof cover of
A soundproof cover piece configured to cover the vicinity where the power supply lead or the auxiliary lead passes through the bottom portion of the rotating electric machine body, penetrate the power supply lead or the auxiliary lead, and can be separated and assembled with respect to the other lower soundproof covers, respectively. By the provision, the above object is achieved.

The soundproof cover piece for the power supply lead is polygonal and is arranged at a corner of the lower soundproof cover. If it is constructed so that it can be attached to and detached from an adjacent lower soundproof cover with a bolt, the soundproof cover can be disassembled. It is sometimes suitable for disassembling the soundproof cover without disassembling the power lead.

Further, the soundproof cover piece for the auxiliary lead has a polygonal shape, is arranged on at least one side of the lower soundproof cover, and can be attached to and detached from an adjacent lower soundproof cover with a bolt so that the soundproof cover can be removed. When disassembling, it is suitable for disassembling the soundproof cover without disassembling the power supply lead.

[0009]

According to the present invention, the power supply lead or the auxiliary lead is formed so as to cover the vicinity of the bottom of the rotating electric machine body and penetrate the power supply lead or the auxiliary lead so that they can be separated and assembled to other lower soundproof covers. By providing the soundproof cover piece, when the soundproof cover is disassembled, by separating the soundproof cover piece from other lower soundproof covers,
The upper soundproof cover and the lower soundproof cover can be disassembled while the soundproof cover piece is penetrated without disassembling the power supply lead or the auxiliary lead.

[0010]

1 is a block diagram of a low noise rotating electric machine provided with a soundproof cover according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along line II-II of FIG. In the figure, the same parts as those in FIGS. 3 and 4 are designated by the same reference numerals. In the figure, the rotary electric machine body 1 is covered with an upper soundproof cover 2. In the present invention, the power supply lead 4 drawn out from the main terminal box 3 has the rotating electric machine main body 1
The power supply lead 4 is penetrated so as to cover the vicinity of the bottom of the power supply lead, and a power supply soundproof cover piece 21 is provided which can be separated and assembled from the other lower soundproof covers 23 and 24. The power lead soundproof cover piece 21 has a polygonal shape and is arranged at a corner of the lower soundproof cover so that it can be separated and assembled from other adjacent lower soundproof covers 23 and 24 via bolts. The power lead soundproof cover piece 21 includes a power lead through hole 15.

Further, in the present invention, the auxiliary terminal box 5
The auxiliary lead 6 is pulled out from the rotary electric machine main body 1 so as to cover the vicinity of the bottom of the rotary electric machine main body 1 to penetrate the auxiliary lead 6 and be separated from the other lower soundproof covers 24 and 25. Was established. The auxiliary lead soundproof cover piece 22 has a quadrangular shape, is arranged on one side of the lower soundproof cover, and is separable from and assembled to the other adjacent lower soundproof covers 24 and 25 with bolts. The auxiliary lead soundproof cover piece 22 is provided with an auxiliary lead through hole 16.

When disassembling the soundproof cover, first, the upper soundproof cover 2 is removed, and the lower soundproof cover appears in a planarly assembled state. Next, the soundproof cover piece 2 for power leads
1 and the auxiliary lead soundproof cover piece 22 is loosened from the bolts connecting the other soundproof covers 23, 24 and 25 to separate these soundproof cover pieces 21 and 22 from the other lower soundproof covers. Reed 6 and soundproof cover piece 2
The other lower soundproof covers 23, 2 attached to the first and second 22
Disassemble 4,25. The figure shows an example of the lower soundproof cover, and the number of divided lower soundproof covers is increased or decreased depending on the size of the rotating electric machine.

[0013]

According to the present invention, a soundproof cover piece for power supply lead or a soundproof cover piece for auxiliary lead which is separable from the lower soundproof cover is provided, and when the soundproof cover is disassembled, the power supply lead or the auxiliary lead is attached to the soundproof cover for power supply lead. Since these soundproof cover pieces are separated from other lower soundproof covers while they are still attached to one or the auxiliary soundproof cover pieces, disassemble the upper soundproof cover and the lower soundproof cover without disassembling the power lead or the auxiliary lead. You can
Therefore, according to the present invention, the disassembling time of the soundproof cover can be shortened.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a low noise type rotating electric machine including a soundproof cover according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a configuration diagram of a low noise type rotary electric machine including a conventional soundproof cover.

4 is a sectional view taken along line IV-IV in FIG.

[Explanation of symbols]

 1 rotating electric machine main body 2 upper soundproof cover 3 main terminal box 4 power supply lead 5 auxiliary lead box 6 auxiliary lead 15 power supply lead through hole 16 auxiliary lead through hole 21 power lead soundproof cover piece 22 auxiliary lead soundproof cover piece 23 lower soundproof cover 24 Lower Soundproof Cover 25 Lower Soundproof Cover 26 Lower Soundproof Cover

Claims (3)

[Claims] 1. A soundproof cover for a low noise type rotary electric machine, comprising: an upper soundproof cover for covering the main body of the rotary electric machine; and a lower soundproof cover for covering a bottom portion of the main body of the rotary electric machine and penetrating a power supply lead and an auxiliary lead, respectively. A soundproof cover piece configured to cover the vicinity where the power supply lead or the auxiliary lead passes through the bottom portion of the rotating electric machine main body, penetrate the power supply lead or the auxiliary lead, and be separable from and assembled to the other lower soundproof covers. A soundproof cover for a low-noise rotating electric machine characterized by being provided with. 2. The soundproof cover for a low noise type rotating electric machine according to claim 1, wherein the power lead soundproof cover piece is polygonal and arranged at a corner of the lower soundproof cover, and is attached to another adjacent lower soundproof cover. A soundproof cover for a low-noise rotating electric machine, characterized in that it can be separated and assembled via bolts. 3. The soundproof cover for a low noise type rotary electric machine according to claim 1, wherein the auxiliary lead soundproof cover piece is polygonal and is arranged on at least one side of the lower soundproof cover, and the other adjacent lower soundproof covers. On the other hand, a soundproof cover for a low noise type rotating electric machine, characterized in that it can be separated and assembled via bolts.