JPH0953562A - Motor-driven compressor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and rapidly seal a gap between the lead wire lead-out port of a terminal cover and a lead wire lead out there from. SOLUTION: A deformable rubber member 71 is integrally molded at a lead wire 68. By deforming the rubber member 71 through fitting of the rubber member in the lead wire lead-our port 69 of a terminal cover 66, the lead wire lead-out port 69 is sealed. This constitution presses the rubber member against a cap by screwing a cap in a thread formed in the outer periphery of the lead wire lead-out port, a rubber member is pressed against the cap and is pressed therein.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an electric compressor.

[0002]

2. Description of the Related Art An example of a conventional electric compressor is shown in FIG. In FIG. 3, reference numeral 4 denotes a housing, which includes a motor case 49, a frame 5, and a front case 43.
These are fastened to each other by bolts 56. An electric motor M is provided inside the motor case 49, and a scroll compression mechanism C is provided inside the front case 43.

The electric motor M and the compression mechanism C are interlockingly connected to each other via a rotary shaft 3. Rotating shaft 3
The right end of the frame is supported by the motor case 49 via a sub-bearing 51, and the left end of the frame 5 is supported via a main bearing 52.
It is bearing on.

The electric motor M includes a rotor Ma and a stator Mb.
The rotor Ma is fixed to the rotary shaft 3 and the stator Mb is fixed to the motor case 49 by press fitting.

The scroll type compression mechanism C comprises a fixed scroll 1, an orbiting scroll 2 and the like.

The fixed scroll 1 is provided with an end plate 11 and a spiral wrap 12 provided upright on the inner surface of the end plate 11, and the outer peripheral surface of the end plate 11 is brought into close contact with the inner peripheral surface of the front case 43 to thereby end plate 11. A discharge chamber 46 is formed on the left side and a suction chamber 47 is limited on the right side.

A discharge port 13 is formed in the center of the end plate 11, and the discharge port 13 is opened and closed by a discharge valve 17. The fixed scroll 1 is fastened to the front case 43 by screwing bolts 57 into the plurality of legs 15 protruding leftward from the outer surface of the end plate 11.

The orbiting scroll 2 is provided with an end plate 21 and a spiral wrap 22 erected on the inner surface of the end plate 21, and a drive bush 32 is provided in an orbiting bearing 34 in a boss 23 erected on the outer surface of the end plate 21. It is rotatably fitted through. An eccentric drive pin 31 eccentrically provided at the left end of the rotary shaft 3 is slidably fitted in a slide groove 33 formed in the drive bush 32.

The outer surface of the end plate 21 is in sliding contact with the left end surface of the frame 5 via a thrust bearing 53, and the end plate 21 and the frame 5 are in contact with each other.
A rotation preventing mechanism 6 including an Oldham link and the like is interposed between the and.

A plurality of compression chambers 24 are formed by causing the fixed scroll 1 and the orbiting scroll 2 to be eccentric to each other by a predetermined distance and to be engaged with each other while shifting the angle by 180 degrees.

When the electric motor M is driven, the rotary shaft 3, eccentric drive pin 31, slide groove 33, drive bush
The orbiting scroll 2 is driven via an orbiting drive mechanism including a 32, an orbiting bearing 34, a boss 23, and the like, and the orbiting scroll 2 revolves on a circular orbit of an orbiting radius while being prevented from rotating by a rotation preventing mechanism 6. .

Then, the gas enters the low pressure chamber 48 through the suction port 44, and this gas is passed through the passage provided on the outer periphery of the stator Mb.
After cooling the electric motor M in the process of passing through the gap 58 between the stator 58 and the stator Ma and the rotor Ma, the electric motor M is sucked into the compression chamber 24 through the passage 54 and the suction chamber 47 provided in the frame 5.

Then, as the volume of the compression chamber 24 decreases due to the orbital movement of the orbiting scroll 2, the compression chamber 24 is compressed and reaches the central portion, passes through the discharge port 13 from the central portion, and pushes open the discharge valve 17 to discharge. It is discharged into the chamber 46 and then flows out through the discharge port 45.

A glass sealed terminal 62 is mounted in a boss 65 formed on the motor case 49.
62 is covered with a terminal cover 66.

The motor lead wire 61 connected to the stator Mb of the electric motor M is connected to the tab 63 inside the glass sealed terminal 62, and the lead wire 68 connected to the tab 67 outside the glass sealed terminal 62 is connected to the terminal cover 66. The lead wire outlet 69 is pulled out to the outside.

[0016]

In the conventional electric compressor described above, in order to prevent water or the like from entering the inside of the terminal cover 66 after the lead wire 68 is pulled out from the lead wire outlet 69. , Lead wire 68 and lead wire outlet 69
Since the sealant 70 was applied to the gap between the
Not only is it troublesome to apply 70, but also the terminal cover
There was a problem that it was difficult to securely seal the inside of 66.

[0017]

SUMMARY OF THE INVENTION The present invention has been invented to solve the above problems, and its gist is to house a compression mechanism and an electric motor for driving the compression mechanism in a housing, The lead wire of the terminal cover for connecting the motor lead wire of the electric motor to the tab inside the glass sealed terminal attached to the housing and the lead wire connected to the tab outside the glass sealed terminal for covering the outside of the glass sealed terminal. In an electric compressor drawn to the outside from a wire outlet, the lead wire is integrally molded with a deformable rubber member, and the rubber member is fitted into the lead wire outlet of the terminal cover to deform the lead wire. The electric compressor is characterized in that the outlet is sealed.

Another feature is that the lead wire outlet is sealed by fitting the rubber member into the lead wire outlet of the terminal cover from the inside and deforming it.

Still another feature is that the rubber member is fitted into the lead wire outlet of the terminal cover from outside, and a cap is screwed into a screw provided on the outer periphery of the lead wire outlet. The lead wire outlet is sealed by pushing the rubber member into the lead wire outlet to deform it.

[0020]

DETAILED DESCRIPTION OF THE INVENTION One embodiment of the present invention is shown in FIG. As shown in FIG. 1 (B), the lead wire 68 is preliminarily integrally formed with a truncated cone-shaped rubber member 71 which is tapered toward the tip.

When the lead wire 68 is connected to the tab 67 on the outside of the glass sealed terminal 62 and pulled out from the lead wire outlet 69 of the terminal cover 66, the rubber member 71 is inserted into the lead wire outlet 69 from the inside. When fitted, it deforms to seal the lead wire outlet 69. Other configurations are similar to those of the conventional one shown in FIG. 3, and corresponding members are designated by the same reference numerals and the description thereof is omitted.

A second embodiment of the invention is shown in FIG. In the second embodiment, the lead wire 68 has a frustoconical rubber member 74 that gradually expands toward the tip.
Are integrally molded in advance. And the lead wire outlet 69
A screw 75 is engraved on the outer periphery of the.

After connecting the base end of the lead wire 68 to the tab 67 on the outside of the glass sealed terminal 62, the rubber member 74 is fitted into the lead wire outlet 69 from the outside, and then the lead wire
After inserting 68 through the hole 73 formed in the cap 72,
When 72 is screwed into screw 75, rubber member 74 is
The lead wire take-out port 69 is sealed by being deformed by being pushed into the inside from the outside. Other configurations are similar to those of the conventional one shown in FIG. 3, and corresponding members are designated by the same reference numerals and the description thereof is omitted.

[0024]

According to the present invention, a rubber member integrally formed with a lead wire is fitted into the lead wire outlet of the terminal cover to be deformed, so that the lead wire outlet can be easily and quickly provided. Can be reliably sealed.

If the rubber member is fitted into the lead wire outlet of the terminal cover from the inside to be deformed,
After connecting the base end of the lead wire to the tab on the outside of the glass sealed terminal, pull out this lead wire from the lead wire outlet of the terminal cover to fit the rubber member from the inside to the lead wire outlet. The lead wire outlet can be sealed more easily.

If a rubber member is fitted into the lead wire outlet of the terminal cover from the outside and the cap is screwed into the screw provided on the outer periphery of the lead wire outlet, the rubber member is pushed by the cap and leads. Since it is pushed into the wire outlet, it can be reliably sealed.

[Brief description of drawings]

1A and 1B show a first embodiment of the present invention, in which FIG. 1A is a partial longitudinal sectional view, and FIG. 1B is a partially enlarged sectional view showing a state before a rubber member is fitted into a lead wire outlet. Is.

2A and 2B show a second embodiment of the present invention, in which FIG. 2A is a partial vertical sectional view, and FIG. 2B is a partially enlarged sectional view showing a state before a rubber member is fitted into a lead wire outlet. Is.

FIG. 3 shows a conventional electric compressor, (A) is a longitudinal sectional view,
(B) is a sectional view taken along the line BB of (A).

[Explanation of symbols]

 4 Housing M Electric motor 61 Motor lead wire 62 Glass sealed terminal 63 Inner tab 67 Outer tab 66 Terminal tab 68 Lead wire 69 Lead wire outlet 71 Rubber member

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masahiro Fukushima Inventor Masahiro Fukushima 1 at 60 Kyutansho, Iwatsuka-cho, Nakamura-ku, Nagoya City Nakabishi Engineering Co., Ltd.

Claims (3)

[Claims] 1. A compression mechanism and an electric motor for driving the compression mechanism are housed in a housing, and a motor lead wire of the electric motor is connected to a tab inside the glass sealed terminal attached to the housing and the glass sealed terminal of the glass sealed terminal is connected. In an electric compressor in which a lead wire connected to an outer tab is pulled out from a lead wire outlet of a terminal cover that covers the outside of the glass sealed terminal, a deformable rubber member is integrally molded with the lead wire. An electric compressor in which the lead wire outlet is sealed by fitting and deforming the lead wire outlet of the terminal cover. 2. The electric compressor according to claim 1, wherein the lead wire outlet is sealed by fitting the rubber member into the lead wire outlet of the terminal cover from the inside and deforming the rubber member. . 3. The rubber member is fitted into a lead wire outlet of the terminal cover from the outside thereof, and a cap is screwed into a screw provided on the outer periphery of the lead wire outlet to attach the rubber member to the lead wire. An electric compressor characterized in that the lead wire outlet is sealed by being pushed into the outlet and deformed.