JP2006307646A - Hermetic scroll compressor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hermetic scroll compressor capable of improving assembling performance, and capable of reducing the size. <P>SOLUTION: A hermetic terminal 22 having a plurality of conductive pins 22f is installed in a cover chamber 21. While, a terminal cover 25 for storing a terminal 24 respectively installed in a plurality of lead wires 23 of an electric motor 10, is installed in a part of a compressor body oppositely to the hermetic terminal of the cover chamber. A press-in port for pressing in the conductive pins of the corresponding hermetic terminal is arranged in the respective terminals. A pin inserting hole arranged in alignment with the press-in port, extending upward from the press-in port and opening on an upper surface of the terminal cover, is formed in the terminal cover. The conductive pins of the hermetic terminal opposed to this hole are guided to the pin inserting hole of the terminal cover, and are pressed in the press-in port of the terminal of the lead wires of the electric motor, and are surely connected to the terminal, to electrically connect the electric motor and the hermetic terminal. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a hermetic scroll compressor (hereinafter referred to as a scroll compressor or simply a compressor) aiming at miniaturization in the compressor height direction.

As shown in FIG. 1 of Japanese Patent No. 3152472, the scroll compressor has a compressor main body mainly composed of an electric motor and a compression mechanism connected by a crankshaft in a sealed container, and an electric motor part on the upper side of the compression mechanism. It is housed and configured as shown in the lower part. This compressor is electrically connected to the hermetic provided in the lid chamber through a notch (not shown) formed in a part of the compression mechanism through a lead wire extending from an electric motor arranged at the bottom of the sealed container. Each terminal is press-fitted and connected to the terminal.
The compression mechanism unit is composed of a fixed scroll and a turning scroll that is turned by an electric motor. The fixed scroll and the orbiting scroll are provided with spiral wraps that mesh with each other. A compression chamber is formed by these wraps, and when the orbiting scroll is revolved, the volume of the compression chamber is gradually reduced. The refrigerant gas supplied to the compression chamber is compressed.

Hereinafter, the conventional technology related to the configuration of the conventional compressor and the method of connecting the electric motor and the lid chamber will be described in detail.
FIG. 8 shows, for example, FIG. 1 of Japanese Patent No. 3152472, the connection between the snap lead terminal of the electric motor lead and the flag-shaped conductive pin (used for a compressor having a relatively large electric capacity). Is a longitudinal sectional view schematically showing a form in which a plurality of terminals are collectively stored in a terminal cover and connected to a conductive pin, wherein 1 is a sealed container, 1a is a case, 1b is a lid chamber, and 1c is Bottom chamber, 1d hermetic terminal, 1e suction pipe, 1f conductive pin, 1g insulation, 2 compression mechanism, 3 fixed scroll, 3a end plate, 3b wrap, 3c notched, 4 Orbiting scroll, 4a is an end plate, 4b is a wrap, 4c is a boss part, 5 is a compression chamber, 6 is a crankshaft, 6a is an eccentric part, 6b is an oil supply hole, 6c is a lateral hole, 7 is a frame, 7a is a notch part , 8 is the main bearing, 9 is the discharge port, 10 Motor, 11 is stator, 11a is end coil, 11b is lead wire, 11c is terminal, 11d is terminal cover, 12 is rotor, 13 is refrigeration oil, 14 is intake pipe, 15 is discharge pipe, 16 is top sealed It is space.
In the figure, a sealed container 1 is formed by welding a case 1a, a lid chamber 1b at the upper part thereof, and a bottom chamber 1c at the lower part thereof, and a compression mechanism part 2 constituting a compressor body is provided at the upper part in the sealed container 1. In the lower part, the electric motor unit 10 is connected to the crankshaft 6 and arranged.

The compression mechanism unit 2 includes a fixed scroll 3 in which a spiral wrap 3b stands upright on an end plate 3a, and a turning scroll 4 in which a spiral wrap 4b stands upright on an end plate 4a. The fixed scroll 3 is fastened to the frame 7 and the compression chamber 5 is formed.
The compression mechanism unit 2 is fixed by spot welding (not shown) the frame 7 and the sealed container 1. The crankshaft 6 is supported by the main bearing 8 of the frame 7.
A rotor 12 of an electric motor 10 is press-fitted below the main bearing 8 of the crankshaft 6, and a stator 11 is attached to the hermetic container 1 so as to face the rotor 12.

  An eccentric portion 6 a is formed at the upper end portion of the crankshaft 6, and the eccentric portion 6 a is slidably fitted into a boss portion 4 c provided at the center of the lower surface of the end plate 4 a of the orbiting scroll 4. An oil supply hole 6b passes through the center of the crankshaft 6 from the lower end to the upper end. Refrigerating machine oil 13 stored in the lower part is supplied.

  A lead wire 11 b is attached to a part of the upper end coil 11 a of the stator 11 of the electric motor 10, and the lead wire 11 b is a notch portion 7 a provided in a part of the frame 7 and a part of the fixed scroll 3. As shown in FIG. 9, the terminal 11c, which is pulled upward through the notch 3c provided in the connector and connected to the tip of the lead wire 11b, is connected to the lid via an electrically insulating terminal cover 11d for housing it. A conductive pin 1f supported by an insulating material 1g is press-fitted and connected to an iron plate-drawn hermetic terminal 1d welded to the chamber 1b.

  With the configuration of the compressor as described above, when the power source is connected to the outside of the conductive pin 1 f of the hermetic terminal (not shown) and the crankshaft 6 is rotated by the electric motor 10, it fits into the boss portion 4 c of the orbiting scroll 4. As a result of the eccentric rotation of the eccentric portion 6a of the crankshaft 6, the orbiting scroll 4 orbits, the compression chamber 5 continuously performs suction and compression motion, and from a suction pipe 14 connected from an evaporator (not shown) of the refrigeration cycle. The refrigerant gas guided to the compression chamber 5 is compressed and discharged into the sealed container 1 through the discharge port 9 opened in the fixed scroll 3, and further from the discharge pipe 15 attached to the sealed container 1 through the condenser ( (Not shown).

Here, an example of a method of connecting a conventionally known compressor between the terminal 11c of the lead wire 11b of the stator 11 of the electric motor 10 and the hermetic terminal 1d of the lid chamber 1b will be described with reference to FIG.
A hermetic terminal of a lid chamber 1b in which the terminal 11c of the electric motor lead wire 11b drawn out from between the notches 7a and 3c and the inner wall of the case 1a is placed in a state where the compression mechanism 2 is housed and fixed in the hermetic container 1. It is press-fitted and connected to the 1d conductive pin 1f through the terminal cover 11d as shown in the figure.
Further, as shown in FIG. 11, the lid chamber 1b is reversed, and the electric motor lead wire 11b is bent appropriately, and the suction pipe 14 press-fitted into the fixed scroll 3 of the compression mechanism 2 and a part of the lid chamber 1b are provided. The case 1a and the lid chamber 1b are fitted and assembled as shown in FIG. 8 while fitting the attached suction hook pipe 1e, and the case 1a and the lid chamber 1b are sealed and welded. The assembly of the compressor is completed by brazing.

However, the assembly of the motor lead wire 11b and the hermetic terminal 1d of the conventionally known scroll compressor described above has the following problems.
As shown in FIG. 10, when the motor lead 11b and the hermetic terminal 1d of the lid chamber 1b are connected with the case 1a and the lid chamber 1b opened, the connection work, the suction pipe 14 and the suction hook pipe 1e are possible. In the state where the length of the lead wire 11b having a margin is required and, as a result, the lid chamber 1b is press-fitted into the state of FIG. 8 as shown in FIG. The lead wire 11b is stored in a sealed space 16 between the upper inner side and the compression mechanism section 2 in a meandering state longer than necessary, and the lead wire 11b projects into the space 16 such as the suction pipe 14 or the terminal cover 11d. It is necessary to preliminarily form a plurality of locations so as not to interfere with the portion to be performed, and to cover the substrate with an insulating tube or the like to ensure electrical insulation. Further, a flexible winding wire that can withstand breakage due to severe molding and operating vibration is soldered (not shown) with an enamel wire (not shown) of the motor winding.
Further, as shown in FIG. 9, the terminal of the lead wire 11b has a snap shape having a cylindrical press-fitting portion for press-fitting with the conductive pin 1f. Therefore, the terminal cover 11d for accommodating this is formed thick. Further, the hermetic terminal 1d has a narrow shape and its end protrudes from the lower surface after the lid chamber is welded. For this reason, the lead wire 11b and the space 16 above the sealed container for accommodating them are enlarged to cope with it. is doing.

The above-described conventional lead wire connection method for the compressor includes the lead wire connection method for the lid chamber and the electric motor, and a lead wire having an extra length in the space above the compressor even if necessary for assembly work. There is a point that the storing work is complicated and lacks reliability, and complicated bending is required for forming the lead wire, so soldering the flexible lead wire to the enamel wire of the motor winding, Furthermore, it is necessary to cover the lead wire with an insulating tube, and the cost of the compressor is increased due to the soaring work cost and material cost.
Furthermore, the snap-shaped terminals and terminal covers to be used have large dimensions in the height direction, and the space for routing the above-mentioned lead wires needs to be large, so the height direction of the compressor becomes large. However, it has a drawback that is contrary to the space saving of the refrigeration and cooling products equipped with these compressors such as air conditioners.
Japanese Patent No. 3152472

  It is an object of the present invention to provide a hermetic scroll compressor capable of improving assemblability, reducing cost, and downsizing.

The object of the present invention is achieved by a hermetic scroll compressor having any one of the following configurations (1) to (5).
(1) A sealed container formed by integrally welding a lid chamber and a bottom chamber at both ends of a cylindrical case,
An electric motor unit disposed in a lower part of the sealed container;
And a hermetic scroll compressor having a compression mechanism portion disposed at an upper portion in the hermetic container and connected to the electric motor portion by a crankshaft,
A hermetic terminal having a plurality of conductive pins is attached to the lid chamber,
On the other hand, a terminal cover that accommodates terminals respectively attached to a plurality of lead wires of the electric motor is attached to a part of the compressor body so as to face the hermetic terminal of the lid chamber, and each of the terminals Is provided with a pressure inlet into which the corresponding conductive pin of the hermetic terminal is press-fitted. The terminal cover is provided in alignment with the pressure inlet and extends upward from the pressure inlet. A pin insertion hole opened at
The conductive pins of the opposing hermetic terminal are guided into the pin insertion hole of the terminal cover and press-fitted into the pressure inlet of the terminal of the lead wire of the electric motor, and are securely connected to the terminal, and the electric motor and the hermetic terminal are electrically connected. Hermetic scroll compressor characterized in that it is continuously connected.
(2) The hermetic terminal is configured by using a terminal plate having a thin outer peripheral plate thickness and a thick central plate portion, and a ring-shaped protrusion welded to the lid chamber by electric resistance welding on the outer peripheral portion. A plurality of holes are formed in the central portion, and the conductive pins are sealed and held in an electrically insulated state, and the lid chamber has a hole into which the central portion of the hermetic terminal can be inserted, and a hermetic terminal A stepped abutting flat surface portion with which the outer peripheral portion of the thin plate thickness abuts is formed, and the flat surface portion and the ring-shaped protrusion are hermetically welded by electric resistance welding, and the hermetic terminal is hermetically welded to the lid chamber. The hermetic scroll compressor according to claim 1.
(3) Each of the terminals of the plurality of lead wires is formed of a thin plate having a spring property, and a connection portion connected to the winding is formed on the outer side, and a plurality of claws extending in an inclined manner on the inner side. The pressure inlet is formed by tips of the plurality of claws, and the claw of the terminal and the conductive pin of the hermetic terminal of the lid chamber are press-fitted and connected in the inclination direction of the claw. The hermetic scroll compressor according to item 2.
(4) A terminal cover attached to a part of the compressor body in a state where the terminals of the plurality of lead wires are housed inside, the compressor body within a predetermined range before connection of the conductive pins to the terminals. The hermetic scroll compressor according to any one of claims 1 to 3, wherein the hermetic scroll compressor is capable of moving in a horizontal direction.
(5) The hermetic scroll compressor according to any one of claims 1 to 4, wherein a diameter of the pin insertion hole is gradually reduced from an upper part toward a lower part.

In the hermetic scroll compressor of the present invention, since it is configured as described above, the lead wire of the motor is used by directly pulling out the enamel wire of the winding, and the lead wire terminal is formed thinly in a washer shape. The terminal cover that connects to the enameled wire and accommodates the terminal can also be made relatively thin, and the enameled wire can be formed to the minimum so as to pass through the space inside the compressor and attached to the compression mechanism.
Since the terminal plate of the hermetic terminal of the lid chamber is formed of a thin flat plate, the size of the apparatus can be reduced even in this portion.
Furthermore, the conductive pins of the hermetic terminal welded to the lid chamber and the terminals accommodated in the terminal cover attached to the compression mechanism are press-fitted simultaneously with the operation of fitting the lid chamber to the case. Assemblability is significantly improved over known compressors.

Hereinafter, a hermetic scroll compressor according to an embodiment of the present invention will be described with reference to FIGS. 1 to 7.
1A is a longitudinal sectional view showing an example of the structure of a hermetic scroll compressor according to an embodiment of the present invention, and FIG. 1B is an enlarged sectional view of a portion B in FIG. 1A. Reference numeral 21 is a lid chamber, 21a is a hole, 21b is a stepped contact flat surface portion, 21c is an end surface, 22 is a hermetic terminal, 22a is a terminal plate, 22b is an outer peripheral portion, 22c is a central portion, and 22d is a ring shape. Protrusion (see FIG. 2), 22e is a hole, 22f is a conductive pin, 22g is an insulating material, 23 is a lead wire, 24 is a terminal, 24a is an annular part, 24b is a connection part (see FIG. 5), 24c is a nail, Reference numeral 25 denotes a terminal cover, 25a denotes an insertion hole, 25b denotes a flange portion, 25c denotes a mounting hole, and 26 denotes a terminal cover mounting screw.
Portions corresponding to those in FIG. 8 described above are assigned the same reference numerals and redundant description is omitted.

Like the conventional compressor, the compressor main body of this embodiment basically stores the compression mechanism portion 2 in the upper portion and the motor portion 10 in the lower portion, and both are connected by the crankshaft 6 and arranged. Yes. The sealed container 1 is formed by circumferentially welding a bottom chamber 1c and a lid chamber 21 to a case Ia.
That is, in FIG. 1, the suction chamber 1e is attached to the lid chamber 21 as in the prior art, and the hermetic terminal 22 having the characteristics in the present embodiment is attached. As shown in FIG. 2, the hermetic terminal 22 has a generally flat plate shape (thickness is substantially the same as or smaller than that of the lid chamber 21), and the outer peripheral portion 22b has an edge shape. The central portion 22c is formed in a thick stepped shape, the outer peripheral portion 22b is formed with a ring-shaped protrusion 22d, and the conductive pin 22f is formed in the hole 22e opened in the thick central portion 22c. The insulating material 22g is hermetically supported. The terminal plate 22a does not necessarily have a disk shape as described above, and may be a rectangular plate shape, for example.

FIG. 3 illustrates an example of the shape of the portion of the lid chamber 21 to which the hermetic terminal 22 is welded. A hole 21a into which the thick central portion 22c of the hermetic terminal 22 can be inserted into the lid chamber 21; A stepped abutting flat surface portion 21b formed around the outer diameter of the terminal plate 22a of the hermetic terminal 22 is formed.
In the present invention, the hermetic terminal 22 having the thin stepped outer peripheral portion 22b and the lid chamber 21 having the stepped contact flat surface portion 21b are described. However, the hermetic terminal 22 is reverse to FIG. In the case of welding from the upper side of the lid chamber 21 (not shown) or the like, each member may be formed into a flat plate shape, and a ring-shaped projection may be provided on any member, and projection welding may be performed.

FIG. 4 shows a state in which the hermetic terminal 22 described above with reference to FIGS. 2 and 3 is projection welded to the lid chamber 21, and the projection 22c and a part of the stepped contact flat surface portion 22b of the lid chamber 21 are melted. It is attached in a sealed manner.
At this time, between the outer diameter of the outer peripheral portion 22b of the hermetic terminal 22 and the inner diameter of the stepped contact flat surface portion 21b of the lid chamber 21, and the outer diameter of the thick central portion 22c of the hermetic terminal 22, A clearance is provided between the inner diameter of the hole 21a of the 21 and the welding current concentrates on the ring-shaped protrusion 22d of the hermetic terminal 22 and the stepped portion 21b on which it contacts, so that the lid chamber 21 and the hermetic terminal 22 are welded. To be sure.

FIG. 5 illustrates an example of the terminal 24 according to the present embodiment and a connection state between the terminal 24 and the lead wire 23. The terminal 24 is manufactured using a thin plate material having excellent conductivity and spring property (elasticity), and a plurality of claws 24c forming a pressure inlet into which the conductive pin 22f is press-fitted are provided inside the annular portion 24a. The connection part 24b which connects the lead wire 23 is provided in the outer side of the annular part 24a.
As shown in the AA cross section, the claw 24c formed in the annular portion 24a is formed in an inclined shape in the press-fitting direction of the conductive pin 22f indicated by the white arrow. The pressure inlet formed by the tips of the plurality of claws 24c is made smaller than the diameter of the conductive pin before the conductive pin 22f is press-fitted. Since it is going to return to the original state, the conductive pins are firmly joined to the terminal 24 by these claws.
In addition, the lead wire 23 (enameled wire) of the motor, which is an extension of the winding of the motor, is inserted into the connecting portion 24b as shown in FIG. It is attached by caulking the connecting portion 24b.

FIG. 6 shows an example of a combination of the terminal 24 described in FIG. 5 and a terminal cover 25 for storing the terminal 24. In FIG. 6, the terminal 24 of the three lead wires has an electrically insulating heat resistant resin. It arrange | positions in the terminal cover 25 shape | molded by the above.
The terminal cover 25 may be integrated by injection molding or the like as shown in the figure, or may be a composite shape that is divided into upper and lower grooves to assemble the terminal 24 and the lead wire 23. There is no problem.
An insertion hole 25a for the conductive pin 22g of the hermetic terminal 22 is opened on the upper surface of the terminal cover 25, and a mounting hole 25c for the compression mechanism portion 2 of the terminal cover 25 is provided on the flange 25b. Yes.

FIG. 7 shows an example of a state in which the terminal cover 25 described above is attached to the compression mechanism section 2.
That is, the upper surface of the fixed scroll 3 constituting the compression mechanism 2, that is, the terminal plate 22a of the hermetic terminal 22 welded to the lid chamber 21 of FIG. 1, and the terminal cover 25 attached to the compressor main body are vertically and parallel to each other. Attach the screws 26 so that they face each other.
At this time, an appropriate gap or a sliding property is added between the flange portion 25b of the terminal cover 25 and the seating surface of the mounting screw 26 so that the terminal cover 25 can move freely in a horizontal direction. Try to put.
Since the lead wire 23 of the electric motor uses a wound enamel wire, it is inferior in flexibility (because it is hard) and therefore cannot be subjected to complicated bending.

However, as shown in FIG. 7, the enamel wire is pulled upward from the end coil 11a of the electric motor 10 through the notch 7a of the frame 7 and the notch 3c of the fixed scroll 3, and the lead wire 23 is connected to the sealed container 1 or the compressor body. The terminal cover 25 can be attached and fixed to a part of the compression mechanism 2 (the upper surface of the fixed scroll 3 in FIG. 7) at the shortest distance by bending at an appropriate place so as to ensure an insulation distance in the gap between the two. It is also possible to assemble electrically safely.
If the gap or space through which the lead wire 23 is passed is small and there is a concern about electrical insulation, measures such as covering the lead wire with an insulating tube (not shown) may be taken as in the prior art.

Thereafter, as shown in FIG. 1, the lid chamber 21 is inserted into the case 1a from above the case 1a while fitting the suction hook pipe 1e of the lid chamber 21 and the suction pipe 14 press-fitted into the compression mechanism 2 in advance. The lid chamber 21 is inserted, and in the process, the claw 24c of the terminal 24 and the conductive pin 22f of the hermetic terminal 22 are press-fitted through the terminal cover 25 as shown in the B cross-sectional view of FIG.
Here, the insertion hole 25a of the conductive pin 22f of the terminal cover 25 is formed so that the diameter gradually decreases from the upper side to the lower side (conical shape) as shown in the sectional view of FIG. As described above, since the terminal cover 25 is mounted so as to be movable in the horizontal direction, the conductive pin 22f is within the conical insertion hole 25a of the terminal cover 25 even if the conductive pin 22f is slightly misaligned. If so, the terminal 24 and the conductive pin 22f can be reliably press-fitted.
Further, the press-fitting dimension of the claw 24c of the terminal 24 and the conductive pin 22f in the height direction can be controlled to an appropriate press-fitting dimension by bringing the end surface 21c of the lid chamber 21 into contact with the upper surface 3d of the flange portion of the fixed scroll 3. is there.

As described above, in the hermetic scroll compressor of the present invention, the hermetic terminal 22 welded to the lid chamber is formed in a flat disk shape, and the enamel wire that is the winding of the motor is directly connected to the lead wire 23 of the motor. The lead wire 23 is connected to a flat washer-like terminal 24 formed of a material having conductivity and spring property by direct caulking and accommodated in the terminal cover 25.
As a result, the thickness of the hermetic terminal 22 and the terminal cover 25 is the same as that of a terminal cover that houses a hermetic terminal drawn from a conventionally known steel plate and a snap-shaped terminal that joins a cylindrical portion to a conductive pin of the hermetic terminal. In comparison, the thickness can be significantly reduced, the height dimension of the upper sealed space 16 formed by the compression mechanism and the sealed container is reduced, and the height of the hermetic scroll compressor can be reduced.

In the present invention, since the lead wire 23 can be pulled out from the motor side before fitting the lid chamber 21 and the case 1a and attached to the compression mechanism portion together with the terminal cover 25, the lead wire 23 is subjected to minimum bending. Thus, when the lid chamber 21 is fitted into the case 1a after the completion of these operations, the terminals housed in the terminal cover 25 attached to the compression mechanism section 2 can be used. 24, since the conductive pin 22f of the hermetic terminal 22 of the lid chamber can be press-fitted, a long lead wire required by the method of joining the lid chamber and the terminal separately from the conventionally known case is unnecessary. In addition, since complicated bending work is involved, it is not necessary to separately use a twisted wire excellent in flexibility as a lead wire, and it is impossible to visually check it. Since the conventional unreliable assembly method of simultaneously fitting the case and lid chamber and wiring the lead wire in the closed state is improved, the addition of an insulating tube may be omitted, and the material constituting the motor The present invention can reduce the cost and the number of compressor assembly steps, and adopt a structure in which the terminal cover can be moved in the horizontal direction. I can say that.
As described above, the present invention can provide a compressor with space saving, low cost, and high reliability, which could not be achieved by the conventional technology.
Although the present invention has been described by way of an example of a hermetic scroll compressor in which a compression mechanism is disposed in the upper part of the hermetic container, the terminal is also connected to the stator of the motor in a hermetic rotary compressor in which the motor part is disposed in the upper part. The same improvement effect as that of the present invention can be expected by attaching to the upper surface of the core (not shown).

(A) is a longitudinal cross-sectional view which shows an example of the assembly structure of the hermetic scroll compressor which concerns on embodiment of this invention, (B) is an expanded sectional view of the B section of said (A). The longitudinal cross-sectional view which shows an example of the shape of the hermetic terminal which concerns on embodiment of this invention. Sectional drawing which shows an example of the shape of the hermetic terminal welding part of the cover chamber which concerns on embodiment of this invention. The longitudinal cross-sectional view which shows an example of the welding state of the cover chamber and hermetic terminal which concern on embodiment of this invention. The perspective view which shows an example of the terminal shape which concerns on embodiment of this invention. The perspective view which shows an example of the terminal and terminal cover which concern on embodiment of this invention. The longitudinal cross-sectional view which shows an example of the assembly state of the lead wire of the electric motor which concerns on embodiment of this invention, a terminal cover, and a compression mechanism part. The longitudinal cross-sectional view which shows an example of the assembly structure of a conventionally well-known sealed scroll compressor. The longitudinal cross-sectional view which shows an example of the joining method of the hermetic terminal and motor terminal of a conventionally well-known sealed scroll compressor. The longitudinal cross-sectional view which shows an example of the lead wire connection method. The longitudinal cross-sectional view which shows an example of the assembly method of the case and lid chamber of a conventionally well-known sealed scroll compressor.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Airtight container 1a Case 1b Stepped part 1c Bottom chamber 2 Compressor mechanism part 3 Fixed scroll 3a End plate 3b Wrap 3c Notch 3d Flange part upper surface 4 Turning scroll 4a End plate 4b Wrap 4c Boss part 5 Compression chamber 6 Crankshaft 6a Eccentric part 6b Oil hole 6c Horizontal hole 7 Frame 7a Notch 8 Main bearing 9 Discharge port 10 Electric motor 11 Stator 11a End coil 11b Lead wire 11c Terminal 11d Terminal cover 12 Rotor 13 Refrigerating machine oil 14 Suction pipe 15 Discharge pipe 16 Sealed space 21 Lid chamber 21a Hole 21b Stepped portion 21c End face 22 Hermetic terminal 22a Terminal plate 22b Outer peripheral portion 22c Center portion 22d Protrusion 22e Hole 22f Conductive pin 22g Insulating material 23 Lead wire 24 Terminal 24a Ring portion 24b Connection portion 24c Claw 25 Terminal cap Bar 25a Insertion hole 25b Flange 25c Mounting hole 26 Terminal cover mounting screw

Claims (5)

A sealed container formed by integrally welding a lid chamber and a bottom chamber at both ends of a cylindrical case;
An electric motor unit disposed in a lower part of the sealed container;
And a hermetic scroll compressor having a compression mechanism portion disposed at an upper portion in the hermetic container and connected to the electric motor portion by a crankshaft,
A hermetic terminal having a plurality of conductive pins is attached to the lid chamber,
On the other hand, a terminal cover that accommodates terminals respectively attached to a plurality of lead wires of the electric motor is attached to a part of the compressor body so as to face the hermetic terminal of the lid chamber, and each of the terminals Is provided with a pressure inlet into which the corresponding conductive pin of the hermetic terminal is press-fitted. The terminal cover is provided in alignment with the pressure inlet and extends upward from the pressure inlet. A pin insertion hole opened at
The conductive pins of the opposing hermetic terminal are guided into the pin insertion hole of the terminal cover and press-fitted into the pressure inlet of the terminal of the lead wire of the electric motor, and are securely connected to the terminal, and the electric motor and the hermetic terminal are electrically connected. Hermetic scroll compressor characterized in that it is continuously connected.   The hermetic terminal is configured using a terminal plate having a thin outer peripheral plate thickness and a thick central plate portion, and a ring-shaped protrusion that is welded to the lid chamber by electric resistance welding is formed on the outer peripheral portion. A plurality of holes are opened in the central portion and the conductive pins are sealed and held in an electrically insulated state. The lid chamber has a hole into which the central portion of the hermetic terminal can be inserted, and a thin plate thickness of the hermetic terminal. A stepped contact flat surface portion with which an outer peripheral portion of the plate contacts is formed, the flat surface portion and the ring-shaped protrusion are sealed and welded by electric resistance welding, and the hermetic terminal is sealed and welded to the lid chamber. Item 2. A hermetic scroll compressor according to item 1.   Each of the terminals of the plurality of lead wires is formed of a thin plate having a spring property, a connection portion connected to the winding is formed on the outer side thereof, and a plurality of claws extending in an inclined manner is formed on the inner side. The inlet according to claim 1 or 2, wherein an inlet is formed at the tip of the plurality of claws, and the claw of the terminal and the conductive pin of the hermetic terminal of the lid chamber are press-fitted and connected in the inclination direction of the claw. The enclosed scroll compressor as described.   The terminal cover attached to a part of the compressor body with the terminals of the plurality of lead wires housed therein is horizontally placed on the compressor body within a predetermined range before the conductive pins are connected to the terminals. The hermetic scroll compressor according to claim 1, wherein the hermetic scroll compressor is capable of moving in a direction. 5. The hermetic scroll compressor according to claim 1, wherein a diameter of the pin insertion hole is gradually reduced from an upper part toward a lower part.

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