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(11) | EP 2 664 796 A2 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Hermetic electric compressor |
(57) An object is to provide a hermetic electric compressor capable of preventing a sealing
material from being crushed so as to reliably secure sealing performance even if a
pressing force is large and its tolerance is wide, and also capable of preventing
a tightening torque from being insufficient and a terminal cover from loosening. In
a hermetic electric compressor (1) in which a terminal cover (7) protecting a terminal
(5) passing through a hermetic housing (2) is tightened and fixed at a plurality of
positions by a nut (10) to a bolt (9) provided on a side of the hermetic housing (2)
with a sealing material (8) interposed therebetween, a pair of protruded portions
(7D) regulating a compression allowance of the sealing material (8) are provided corresponding
to each bolt (9) at symmetrical positions on a straight line passing through substantially
the center of each bolt (9) on an inner peripheral sealing surface (7A) of the terminal
cover (7) contacting and pressing the sealing material (8).
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{Technical Field}
{Background Art}
{Citation List}
{Patent Literature}
{PTL 1}
{Summary of Invention}
{Technical Problem}
{Solution to Problem}
{Advantageous Effects of Invention}
{Brief Description of Drawings}
{Fig. 1}
Fig. 1 is a front view of a terminal cover mounting portion of a hermetic electric
compressor according to an embodiment of the present invention.
{Fig. 2}
Fig. 2 is an explanatory drawing of a terminal cover mounting state illustrated in
Fig. 1.
{Fig. 3}
Fig. 3 is a sectional view along line A-A of Fig. 2.
{Fig. 4}
Fig. 4 is a partially enlarged view of a portion tightened and fixed by a bolt and
a nut on a bottom right side of the terminal cover illustrated in Fig. 2.
{Fig. 5}
Fig. 5 is a sectional view along line B-B of Fig. 4.
{Description of Embodiments}
{Reference Signs List}
REFERENCES CITED IN THE DESCRIPTION
Patent documents cited in the description