JPH0122371Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention provides an edge protrusion that tightly projects in the axial direction in a cylindrical casing of a rotating electrical machine with a condensed water discharge port, and a bearing bracket that abuts the annular end surface of the cylindrical casing. The present invention relates to a bearing bracket having a radially inner side of an annular end surface.

In drip-proof rotating electric machines, a closable condensate outlet is often provided on the underside of the machine casing. These outlets are only opened occasionally for safety reasons. This is because the dimensions of these outlets are large enough to prevent hard foreign objects, especially conductive rods or strips, from entering or being carried into the machine and causing damage to live or rotating parts. This is because there is a risk of contact.

The aim of the invention is to ensure, in a simple manner, continuous and sufficient drainage of condensate without the need for monitoring, and to prevent foreign objects from entering or being introduced into the machine.

According to the present invention, this object is achieved by the means described in the characteristic part of claim 1 of the utility model registration claim.

Embodiments of the present invention shown in the drawings will be described below.

As shown in FIG. 1, the bearing bracket 1 has in its peripheral area 1A in the usual manner an annular end face 2 from which an edge projection 3 projects in the axial direction. The edge projection 3 is tightly surrounded by the end region of a cylindrical housing 4 whose end face 4A rests against the annular end face 2.

In order to form a condensate outlet, the annular end face 2 as well as the edge projection 3 are each provided with a recess 5 or 6 in the outer circumferential surface which communicates with each other at an angle.

As shown in FIG. 3, the recesses 5A, 6A on the outer circumferential surface can be made in a common working process by a tool moved in the axial direction to have an arcuate profile of the same radius; The diameter is selected to be larger than the radial height of the annular end face 2 in order that the recess 5A in the surface opens outwards and communicates with the recess 6A in the outer circumferential surface. At least the axial depth of the recess 5A on the outer circumferential surface is selected to prevent foreign objects of the type described above from entering or being carried into the machine; This is because the foreign object must change direction. Since the outlet is usually located at the bottom of the casing or bearing bracket, foreign objects other than rods cannot reach the inside of the machine, either naturally or intentionally.

As shown in FIG. 4, when the recess 5B on the outer peripheral surface is bent, in order for a rod-shaped foreign object to enter the machine, it must be rotated twice in two planes inside the recesses 5B and 6B on the outer peripheral surface. There is a need,
It is extremely advantageous.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention, and FIGS. 2, 3, and 4 are side views showing different examples of the contours of the recesses on the outer circumferential surface provided by the present invention. 1... Bearing bracket, 2... Annular end surface, 3...
...Edge protrusion, 4...Cylindrical casing, 4A...
End face of cylindrical casing, 5, 6, 5A, 6A,
5B, 6B... Recesses on the outer peripheral surface.

Claims (1)

[Claims for Utility Model Registration] A bearing bracket 1 fitted into an end of a cylindrical casing 4 of a rotating electric machine, comprising an annular end surface 2 that comes into contact with an end surface 4A of the cylindrical casing, and a radially inner side of the annular end surface. A bearing bracket 1 having an edge projection 3 projecting axially from the cylindrical casing and fitting snugly into the cylindrical casing, the annular end surface 2 of the bearing bracket and the outer peripheral surface of the edge projection 3 each having a recess. 5, 6; 5A, 6
A; 5B, 6B are provided, and both depressions 5, 6, 5A, 6A; 5B, 6B communicate with each other and form a condensed water outlet for discharging condensed water from inside the rotating electrical machine. A bearing bracket characterized by: