JPS5854852Y2 - compressor - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a compressor having an improved mounting structure for a cover of a motor section.

The compressor includes a motor section, a compressor section, and the like disposed within a main body formed of a closed container, and a cover is fitted over the motor section.

The cover is approximately bowl-shaped and is placed on the top surface of the electric motor section with the opening surface facing downward.

To explain, a mounting ring with a cross-section shaped like a letter is attached to the upper surface of the electric motor section with a fixing bolt, and the circumferential surface of the above-mentioned cover is fitted to the rising piece of this mounting ring, and these overlapping parts are attached. It is fixed with a fixing bolt.

However, in such a cover mounting structure, a space is required to tighten the fixing bolt that fixes the mounting ring to the upper surface of the electric motor section, so the diameter of the rising piece becomes large.

That is, since the coil end protrudes from approximately the center of the upper surface of the electric motor section, an opening is provided in the mounting ring.

If there is not a sufficient gap between the periphery of the opening and the rising piece, the fixing bolt cannot be tightened with the tightening tool.

Therefore, the diameter of the rising piece becomes large, and the diameter of the cover that fits thereon also becomes large, resulting in a large compressor.

Further, since the fixing position of the mounting ring and the cover is above the top surface of the electric motor, the height of the cover is inevitably high, and the distance between it and the main body is very narrow.

Therefore, there was a risk that the cover would come into contact with the lead wires or sealed terminals attached to the main body.

The present invention was developed in view of the above circumstances, and its purpose is to provide a compressor that reduces the outer diameter of the cover of the motor section and secures a large space above the motor section. This is what I am trying to do.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

In the figure, reference numeral 1 denotes a main body of the compressor, and an electric motor section 2 is provided in the upper part of the main body 1, and a cover 3 is fitted over the upper part of the electric motor section 2 as described later.

The cover 3 is attached to the stator 2b of the electric motor section 2 via a mounting member 4, as also shown in FIG.

The mounting member 4 has an inverted cross-section, and its horizontal piece 40
A has an annular shape having an opening 4a through which the coil end 2a is inserted.

A horizontal piece 40a at the outer periphery of the opening 4a is placed on the upper surface of the stator 2b and fixed with bolts 5.

The falling piece 40b of the mounting member 4 covers the outer peripheral surface of the stator 2b.

Further, as shown in FIG. 3, the outer peripheral wall of the stator 2b has a plurality of flat parts (outer peripheral notches) at predetermined intervals.
6... is provided.

A nut 7, which is a nut part, is attached to the inner circumferential surface of the falling piece 40b of the mounting member 4, which faces the flat parts 6.

Thus, the cover 3 covers the upper part of the electric motor section 2, and the inner circumferential surface of the lower end of the cover 3 covers the falling piece 4 of the mounting member 4.
0 b It is fixed by a bolt 8 that fits on the outer peripheral surface and is screwed into a nut 7 .

As mentioned above, the flat part 6 is provided on the outer circumferential surface of the electric motor part 2.
. . . are formed, and these flat portions 6 . . .
Since the nut part 7 is attached to the inner surface of the falling piece part 40b of the mounting member 4 facing the , the outer diameter of the mounting member 4 can be made smaller by the amount of the flat part 6 formed. Accordingly, the outer diameter of the cover 3 also becomes smaller.

In addition, since the nut 7 of the mounting member 4 is located below the top surface of the motor section 2, the force bar 3 thereof is mounted below, and the space between the top surface of the cover 3 and the main body 1 becomes large.
There is no danger that the nut 7 will come into contact with a lead wire or a sealed terminal (none of which is shown).

Furthermore, since the outer diameter of the cover 3 is small,
The rigidity against upward and downward vibrations is increased, and it is also possible to reduce the thickness of the cover 3.

As shown in FIG. 4, by forming the falling piece 9 of the mounting member 4 into a tapered shape, the cover 3 can be press-fitted smoothly, and noise can be reduced by improving the sealing performance.

As explained above, in the present invention, a flat part is provided at a predetermined interval on the outer peripheral surface of the electric motor part, a nut part is provided on the inner surface of the falling piece of the mounting member facing the flat part, and the above-mentioned electric motor part Since the inner circumferential surface of the cover covering the upper part is fitted onto the outer circumferential surface of the mounting member, and this is fixed with a fixing device that is screwed onto the nut, the mounting member and the cover are reduced by the amount of the flat portion formed. The outer diameter size can be reduced, and the compressor can be made smaller.

In addition, since the nut part of the mounting member is located below the top surface of the motor part, the cover must be lowered that much to install it, which increases the space above the cover and reduces the risk of contact with lead wires or sealed terminals. This has the effect that it can be reliably prevented.

[Brief explanation of drawings]

Figures 1 to 3 show an embodiment of the present invention, in which Figure 1 is a longitudinal cross-sectional view of a compressor, Figure 2 is an enlarged view of section A in Figure 1, and Figure 3 is an enlarged view of section A in Figure 1. 1 is an enlarged view of part B in FIG. 1, and FIG. 4 is a sectional view showing another embodiment of the present invention. 2...Electric motor part, 40a...Horizontal piece part, 40b...Falling piece part, 4...
Mounting member, 6...Flat part, 7...
Nut part, 3...cover, 8...fixing tool.

Claims (1)

[Scope of utility model registration request] A cylindrical electric motor part, a flat part formed at a predetermined interval on the outer peripheral surface of the electric motor part, an annular horizontal piece part attached to the upper surface of the electric motor part, and a falling part that covers the outer peripheral surface of the electric motor part. a mounting member bent in an inverted cross-section and having a nut portion on the inner circumferential side of the falling piece facing the flat portion; A compressor comprising: a cover that fits onto the outer peripheral surface of the member and is fixed to each other by a fixture screwed onto the nut portion.