JPS61169450U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図〜第３図はこの考案の一実施例による回
転電機の軸受装置を示す図で、第１図はその上半
部の縦断面図、第２図はプレロードスプリングの
正面図、第３図は第２図の―線における断面
図、第４図〜第８図は従来の回転電機の軸受装置
を示す図で、第４図は上半部の縦断面図、第５図
は冷却用フアンの正面図、第６図は第５図の―
線における断面図、第７図は回転軸要部の上半
部正面図、第８図は第７図の―線における断
面図である。 図において、１は回転軸、２，３は玉軸受、４
は軸受箱、９は通風穴、１１はプレロードスプリ
ングである。なお、図中、同一符号は同一または
相当部分を示す。 1 to 3 are views showing a bearing device for a rotating electrical machine according to an embodiment of this invention, in which FIG. 1 is a vertical sectional view of the upper half thereof, FIG. 2 is a front view of a preload spring, and FIG. The figure is a cross-sectional view taken along the - line in Figure 2, Figures 4 to 8 are diagrams showing a conventional bearing device for a rotating electrical machine, Figure 4 is a vertical cross-sectional view of the upper half, and Figure 5 is a cooling The front view of the fan, Figure 6 is the same as Figure 5.
7 is a front view of the upper half of the main part of the rotating shaft, and FIG. 8 is a sectional view taken along the line -- in FIG. 7. In the figure, 1 is a rotating shaft, 2 and 3 are ball bearings, and 4 is a rotating shaft.
1 is a bearing box, 9 is a ventilation hole, and 11 is a preload spring. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 回転軸に嵌着された複数個の玉軸受を収容する
とともに、通風穴が設けられた軸受箱を有する回
転電機の軸受装置において、上記回転軸上の複数
個の玉軸受間で、上記軸受箱の通風穴に相対する
位置に予圧を有したプレロードスプリングを配設
したことを特徴とする回転電機の軸受装置。 In a bearing device for a rotating electric machine having a bearing box that accommodates a plurality of ball bearings fitted on a rotating shaft and is provided with ventilation holes, the bearing box is arranged between the plurality of ball bearings on the rotating shaft. A bearing device for a rotating electric machine, characterized in that a preload spring having a preload is disposed at a position opposite to a ventilation hole of the rotating electrical machine.