JP2003161265A - Compressor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compressor using a terminal easy to design for withstand pressure, to work and to handle by abolishing a current-carrying terminal using a glass material. <P>SOLUTION: Two or more power supply wires 2 are mounted on an end cap 1 by a plurality of joint means 3. The joint means 3 comprises a receiving member 4 mounted according to the mounting hole 1a of the end cap 1 and a fastening member 5 screwed to the receiving member 4. A joint fixing part 6, an insulation part 7, and a power outlet part 8 are provided at the tip of the power supply wire 2. The fastening member 5 is screwed to the receiving member 4 to press and fix the taper part 6a of the joint fixing part 6 to the taper hole 4c of the receiving member 4, whereby the power supply wire 2 is mounted on the end cap 1. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compressor in which a compression mechanism and an electric mechanism are built in a closed container, and a terminal is provided on an end cap of the closed container.

[0002]

2. Description of the Related Art Conventionally, there is known a compressor incorporated in a refrigerator, a refrigerator, a car air conditioner or the like, which compresses a refrigerant gas in two stages. In this two-stage compressor, for example, as shown in FIG. 4, a hermetically sealed container A has a first-stage compression mechanism B and a second-stage compression mechanism C built therein, and an electric mechanism D is arranged above it. It is a thing.

The first stage compression mechanism B and the second stage compression mechanism C are
Each has a cylindrical cylinder and a roller that eccentrically rotates while sliding inside the cylinder. Electric mechanism D
Is composed of a motor including a stator and a rotor. A shaft is axially attached to the rotor of the motor, and two eccentric parts formed on the shaft have first-stage compression mechanisms B and 2
The rollers are respectively located in the cylinders of the stage compression mechanism C, and the rollers are rotatably mounted on these eccentric parts. As a result, when the shaft rotates, the rollers eccentrically rotate in the cylinders of the first-stage compression mechanism B and the second-stage compression mechanism C, and the refrigerant gas is compressed in the cylinders.

The refrigerant gas returned to the compressor is sucked from the first suction pipe E into the cylinder of the first-stage compression mechanism B and is compressed in the first stage. The refrigerant gas compressed in the first stage is
While being discharged from the discharge pipe F, a part thereof is discharged into the closed container 1 to have an intermediate pressure. The refrigerant gas discharged into the airtight container 1 is discharged from the second discharge pipe G to be the first discharge pipe F.
It merges with the refrigerant gas discharged from.

The combined refrigerant gas flows from the second suction pipe H to the second suction pipe H.
The second stage compression is performed by being sucked into the cylinder of the second stage compression mechanism C. The high-pressure refrigerant gas compressed in the second stage is discharged from the third discharge pipe I and sent to the refrigeration cycle or the like. Such a series of operations is repeated and the refrigerant gas is circulated and used.

By the way, a terminal for energizing the electric mechanism D is provided at the upper part of the closed container A. The terminal J is attached to the top of the end cap K of the closed container A, for example, as shown in FIG. 5, the lower part of the terminal L is connected to the electric mechanism D via the internal lead wire M, and the upper part is the external lead. It is connected to the power supply via a wire (not shown).
In addition, N is a screw rod erected on the end cap K,
It is for attaching the terminal cover P.

[0007]

In the above-mentioned conventional terminal J, usually three terminals L are fixed to a substantially disk-shaped metal base Q by a filling glass. To attach the terminal J to the end cap K, the metal base Q is fitted into the attachment hole R provided in the end cap K, and the periphery of the metal base Q is welded to the end cap K.

When the refrigerant is carbon dioxide, the operating pressure is very high. In order to cope with this high operating pressure (10 to 13 PMa), the internal pressure of the closed container A is set to an intermediate pressure, but since the terminal J is made of glass, pressure resistance design, workability and handling are Have difficulty.

It is an object of the present invention to provide a compressor in which such a conventional terminal using a glass material is abolished and a terminal is attached, which is easy to handle in pressure resistance, easy to handle and easy to handle.

[0010]

As a concrete means for achieving the above-mentioned object, the present invention is such that a compression mechanism and an electric mechanism are built in a hermetic container as claimed in claim 1, and the upper part of the hermetic container. A compressor in which a terminal for energization is provided in an end cap constituting the above, wherein a plurality of power lines forming the terminal are respectively fixed via a plurality of joint means attached to the end cap. The compressor is the main point. Further, according to a second aspect of the present invention, the joint means includes a cylindrical receiving member fixed to the end cap in accordance with the mounting hole of the end cap, and a tightening member screwed to the receiving member. The joint fixing part and the insulating part are attached to the tip end of the power supply line, the tip end of the power supply line is inserted into the receiving member, and the fastening member is screwed onto the receiving member to thereby fix the joint fixing part. Is fixed to the receiving member by fixing, and the insulating portion is projected into the end cap, and the tip end portion thereof serves as a power supply take-out portion.

According to the present invention, when the terminal is attached to the end cap, the plurality of power supply lines are fixed one by one via the joint means, so that the conventional terminal using the glass material is unnecessary.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of a compressor according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a state diagram in which a power supply line 2 is attached to an end cap 1, and the power supply line 2 is attached via a joint means 3.

The joint means 3 comprises a cylindrical receiving member 4 fixed to the end cap 1 by welding or the like, and a nut-like tightening member 5 screwed to the receiving member 4.

As shown in FIG. 2, the receiving member 4 has a threaded portion 4a formed on the outer periphery of the upper portion thereof, and a taper hole 4c having an upwardly expanding diameter formed at the upper end portion of the central hole 4b. The receiving member 4 has a mounting hole 1 formed in the end cap 1.
It is attached to the outside of the end cap 1 with the center line aligned with a. The tightening member 5 has a female screw portion 5b formed in the lower portion of the center hole 5a. The female screw portion 5b is adapted to be screwed into the male screw portion 4a of the receiving member 4, and the central portion has a central hole. A through hole 5c having a diameter smaller than that of 5a is formed.

As shown in FIG. 3, the power supply line 2 has a joint fixing portion 6 attached to its tip end and an insulating portion 7 provided therein.
The tip is the power supply take-out section 8. The joint fixing part 6 is
It has a cylindrical shape that can be inserted into the tightening member 5, and has a taper portion 6a at its lower end portion that engages with the taper hole 4c of the receiving member 4.
Are formed.

In order to attach the power supply line 2 to the end cap 1, first, it is passed through the through hole 5c of the fastening member 5, and the joint fixing portion 6 is inserted into the fastening member 5. At this time, the insulating part 7
Protrude below the tightening member 5. Next, the insulating portion 7 is attached to the center hole 4b of the receiving member 4 and the mounting hole 1 of the end cap 1.
Then, the female screw portion 5b of the tightening member 5 is screwed into the male screw portion 4a of the receiving member 4.

When the tightening member 5 is rotated and tightened, the joint fixing portion 6 is pushed down accordingly, and the taper portion 6a is formed.
Is engaged with the tapered hole 4c of the receiving member 4 and is strongly pressed. Thereby, the power supply line 2 can be attached and fixed to the end cap 1 via the joint means 3.

In this way, normally, the terminal is constructed by attaching the three power supply lines 2 adjacently to the vicinity of the top of the end cap 1 through the three joint means 3.
Therefore, it is not necessary to use a conventional terminal using a glass material. In this case, since the mounting hole 1a formed in the end cap 1 has a smaller diameter than the conventional terminal mounting hole, it is unlikely to be affected by the intermediate pressure. This can improve the breakdown voltage of the terminal.

Although not shown, the end cap 1 is used by being attached to the upper part of the closed container by welding or the like as in the conventional case. The power supply take-out portion 8 protruding into the end cap 1 is connected to an electric mechanism in the closed container via an internal lead wire, and the power supply line 2 is connected to the power supply side.

The joint means 3 is not limited to that of the above-mentioned embodiment, and for example, a plurality of slits are formed on the upper part of a cylindrical receiving member, and this is squeezed by a ring-shaped tightening member so that the power supply line is The joint fixing portion may be fixed by tightening.

[0021]

As described above, according to the present invention, a plurality of power supply lines are attached to the end caps of a hermetically sealed container in a compressor through a plurality of joint means, respectively. Can be abolished. As a result, the terminal pressure resistance design, workability, and handling are all facilitated.

[Brief description of drawings]

FIG. 1 is a schematic sectional view of an energizing terminal showing an embodiment of a compressor according to the present invention.

FIG. 2 is a sectional view showing a joint member in an exploded manner.

FIG. 3 is an explanatory view showing the tip of the power supply line.

FIG. 4 is a schematic diagram for explaining a two-stage compressor.

FIG. 5 is a schematic sectional view showing an example of a conventional terminal.

[Explanation of symbols]

1 ... End cap 1a ... Mounting hole 2 ... Power line 3 ... Joint means 4 ... Receiving member 5 ... Tightening member 6 ... Joint fixing part 7 ... Insulation part 8 ... Power outlet

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Takashi Sato             2-5-3 Keihan Hondori, Moriguchi City, Osaka Prefecture             Yo Denki Co., Ltd. (72) Inventor Dai Matsuura             2-5-3 Keihan Hondori, Moriguchi City, Osaka Prefecture             Yo Denki Co., Ltd. (72) Inventor Kazuya Sato             2-5-3 Keihan Hondori, Moriguchi City, Osaka Prefecture             Yo Denki Co., Ltd. (72) Inventor Hiroyuki Matsumori             2-5-3 Keihan Hondori, Moriguchi City, Osaka Prefecture             Yo Denki Co., Ltd. (72) Inventor Toshiyuki Ehara             2-5-3 Keihan Hondori, Moriguchi City, Osaka Prefecture             Yo Denki Co., Ltd. (72) Inventor Takayasu Saito             2-5-3 Keihan Hondori, Moriguchi City, Osaka Prefecture             Yo Denki Co., Ltd. (72) Inventor Haruhisa Yamazaki             2-5-3 Keihan Hondori, Moriguchi City, Osaka Prefecture             Yo Denki Co., Ltd. (72) Inventor Masaya Tadano             2-5-3 Keihan Hondori, Moriguchi City, Osaka Prefecture             Yo Denki Co., Ltd. (72) Inventor Atsushi Oda             2-5-3 Keihan Hondori, Moriguchi City, Osaka Prefecture             Yo Denki Co., Ltd. F-term (reference) 3H003 AA05 AB04 AC03 AD02 CF02                 5H604 AA08 BB01 BB14 CC01 CC05                       CC11 DA02 PB04 PC04 QA05                       QB03                 5H615 AA01 BB01 BB14 PP01 PP15                       PP18 SS17 SS20

Claims (3)

[Claims] 1. A compressor in which a compression mechanism and an electric mechanism are built in a closed container, and an end cap constituting an upper portion of the closed container is provided with a terminal for energization, wherein a plurality of power sources forming the terminal are provided. A compressor characterized in that the wires are respectively fixed through a plurality of joint means attached to the end cap. 2. The tip of the power supply line, wherein the joint means comprises a cylindrical receiving member fixed to the end cap in accordance with the mounting hole of the end cap, and a tightening member screwed to the receiving member. The joint fixing portion and the insulating portion are attached to the portion, the distal end portion of the power supply wire is inserted into the receiving member, and the fastening member is screwed into the receiving member to fix the joint fixing portion to the receiving member. The compressor according to claim 1, which is fixed by being pressed against. 3. The compressor according to claim 2, wherein the insulating portion is projected into the inside of the end cap, and a tip portion of the insulating portion serves as a power supply extracting portion.