SCROLL COMPRESSOR
BACKGROUND OF THE INVENTION
1. FIELD OF THE INVENTION
The present invention relates to a scroll compressor
used to compress refrigerant gas and the like.
This application is based on Japanese Patent Application
No. 2006-164678, the content of which is incorporated herein
by reference.
2. DESCRIPTION OF RELATED ART
Heretofore a scroll compressor is known as a compressor
which compresses a fluid gas such as refrigerant gas or the
like.
In this kind of scroll compressor a thrust slide bearing
is provided which slides against an outer face of an end plate
formed by a slide face of an orbiting scroll member, to
support a thrust load acting on the orbiting scroll member.
This thrust slide bearing is a thrust plate formed from a
ring-shaped thin steel plate with a coating film of solid
lubricant applied to the slide face, and is attached to a
thrust bearing face formed on the housing side. (For example,
see Publication of Japanese Patent No. 3364016, FIG. 1) .

Furthermore, a fluid machine has been proposed in which a
resin coating principally composed of fluororesin and
polyamideimide resin is formed on one or both sides of a slide
face of a structural member. That is, by specifying the
principal components and component ratio combined to form a
film with a fluororesin base, formation of a highly reliable
resin film in which cracking and peeling do not occur over a
long period of time becomes possible. (For example, see
Japanese Unexamined Patent Application, Publication No. 2005-
325842, FIG. 2) .
Incidentally, in a thrust plate (thrust slide bearing)
which supports the slide face of an orbiting scroll member,
when a coating of a fluororesin such as PTFE is applied to the
steel plate with the aim of improving lubrication, peeling of
the coating becomes a problem. Hereunder the problem of
peeling will be specifically explained with reference to the
drawings.
In FIG. 5, reference numeral 27 denotes an orbiting
scroll member, which is disposed inside a front housing 5
constituting a low pressure side. In the orbiting scroll
member 27, a rear face of an end plate 27A forms a slide face
61, and this is supported and slides on a thrust plate 51
which is fixedly installed on a thrust bearing face 5B of the
front housing 5.

As shown in FIG. 6A and FIG. 6B for example, the thrust
plate 51 is one where a coating layer 51b of fluororesin or
the like is formed on the surface of a ring-shaped thin steel
plate 51a. This coating layer 51b receives a repetitive
thrust load from the sliding orbiting scroll member 27.
Therefore, both corner portions in particular are in danger of
peeling off. That is, both corner portions of the thin steel
plate 51a are parts where it is difficult to form the coating
layer 51b to a satisfactory uniformity. For example, as shown
in FIG. 7A, because the coating layer 51b does not adhere
easily, separation occurs at the corners, or as shown in FIG.
7B, it is easy for the coating layer 51b to become too thick
when the amount of adhesion is increased in order to prevent
separation.
From this background, in a scroll compressor, it is
desirable to prevent peeling of the coating layer 51b applied
to the thrust plate 51, to thereby maintain a desired level of
lubrication over a long period of time and thus increase
reliability and durability.
BRIEF SUMMARY OF THE INVENTION
The present invention takes into consideration the above
circumstance, with an object of providing a scroll compressor
in which reliability and durability is increased by preventing

peeling of the coating layer applied to the thrust plate, to maintain a desired level of lubrication for a
long period of time.
The present invention adopts the following means in order to solve the above problem.
A scroll compressor according to the present invention is a scroll compressor comprising a
thrust plate, a coating which is applied to a surface of said thrust plate, a housing having a thrust
bearing face to which said thrust plate is fixedly attached, an orbiting scroll member having a slide
face which is supported by said thrust plate and which orbits while sliding, and a peeling prevention
part which reduces a sliding pressure acting on a thrust plate edge portion from said slide face,
wherein said peeling prevention part is a flexible area established on an edge portion of said thrust
plate.
As a result, when a sliding pressure acts on the thrust plate edge portion where formation of a
satisfactorily uniform coating layer is difficult, the thrust plate can flex and thus absorb the sliding
pressure.
The flexible area in this case is preferably one which supports the thrust plate by a curved or
inclined face, and where a space formed between the thrust plate at both edges changes gradually.
The invention further provides a scroll compressor comprising a thrust plate, a coating which
is applied to a surface of said thrust plate, a housing having a thrust bearing face to which said thrust
plate is fixedly attached, an orbiting scroll member having a slide face which is supported by said
thrust plate and which orbits while sliding, and a peeling prevention part which reduces a sliding
pressure acting on a thrust plate edge portion from said slide face, wherein said peeling prevention
part is a curved face or bevelled edge formed on an edge portion of said slide face.

As a result, in the thrust plate edge portion where formation of a satisfactorily uniform
coating layer is difficult, a space is formed between the slide face and the thrust plate. Therefore
sliding pressure does not act directly. That is, this peeling prevention part can reduce the sliding
pressure acting on the thrust plate edge portion to zero.
Also, because the coating layer becomes difficult to peel off, it is possible to make the coating
layer thinner.
The invention also provides a scroll compressor comprising a thrust plate having a thrust
plate surface extending between two thrust plate edge portions forming peripheral edges of the thrust
plate; a coating applied to the thrust plate, the coating covering at least all of the plate surface
including the two thrust plate edge portions; a housing having a thrust bearing face to which said
thrust plate is fixedly attached, an orbiting scroll member having a slide face which is in sliding
engagement with at least part of said thrust plate surface extending between the two thrust plate edge
portions; means for orbiting the orbiting scroll member to cause the slide face to slide relative to the
thrust plate surface of the thrust plate; and a peeling prevention means for reducing a sliding pressure
acting on at least one of the thrust plate edge portions for preventing peeling of the coating applied to
the at least one of the thrust plate edge portions, wherein the peeling prevention means includes
means for providing flexible area of the thrust plate at the at least one of the thrust plate edge
portions.
The invention further provides a scroll compressor comprising a thrust plate having a thrust
plate surface extending between two thrust plate edge portions forming peripheral edges of the thrust
plate; a coating applied to the thrust plate, the coating covering at least all of the plate surface
including the two thrust plate edge portions; a housing having a thrust bearing face to which said

thrust plate is fixedly attached, an orbiting scroll member having a slide face which is in sliding
engagement with at least part of said thrust plate surface extending between the two thrust plate edge
portions; means for orbiting the orbiting scroll member to cause the slide face to slide relative to the
thrust plate surface of the thrust plate; and a peeling prevention means for reducing a sliding pressure
acting on at least one of the thrust plate edge portions for preventing peeling of the coating applied to
the at least one of the thrust plate edge portions, wherein the peeling prevention means includes a
curved face portion or beveled edge portion formed on a peripheral side edge portion of the slide
face.
A scroll compressor according to the present invention is a scroll compressor comprising a
thrust plate, a coating which is applied to a surface of the thrust plate, a housing having a thrust
bearing face to which the thrust plate is attached, an orbiting scroll member having a slide face which
is supported by the thrust plate and which orbits while sliding, and a peeling prevention part which
reduces a sliding pressure acting on a thrust plate edge portion from the slide face.
According to such a scroll compressor, because a peeling prevention part is provided which
reduces the sliding pressure acting on the thrust plate edge portion from the slide face, then in the
thrust plate edge portion where formation of a satisfactorily uniform coating layer is difficult, peeling
of the coating layer can be prevented due to a reduction in the repeatedly acting sliding pressure.
In the above aspect of the invention preferably the peeling prevention part is a slide prohibited
area established on an edge portion of the thrust plate. As a result, the sliding pressure does not act
directly on the thrust plate edge portion where formation of a satisfactorily uniform coating layer is
difficult. That is, this peeling prevention part can reduce the sliding pressure acting on the thrust

plate edge portion to zero.
According to the invention described above, by providing the peeling prevention part which
can reduce the sliding pressure acting on the thrust plate edge portion from the slide face, then in the
thrust plate edge portion where formation of a satisfactorily uniform coating layer is difficult, it
becomes possible to reduce the repeatedly acting sliding pressure. Therefore, because peeling of the
coating layer attributable to the sliding of the orbiting scroll member is prevented, and a desired level
of lubrication can be maintained over a long period of time, a remarkable effect is obtained where
reliability and durability of the scroll compressor is improved.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE ACCOMPANYING DRAWINGS
FIG. 1A is a cross-section of an overall structural example showing an embodiment of a scroll
compressor according to the present invention.
FIG. 1B is an enlarged cross-section view of a main part

showing a first embodiment of a peeling prevention part.
FIG. 2 is an enlarged cross-section view of a main part
showing a second embodiment of a peeling prevention part.
FIG. 3 is an enlarged cross-section view of a main part
showing a modified example of the second embodiment shown in
FIG. 2.
FIG. 4 is an enlarged cross-section view of a main part
showing a third embodiment of a peeling prevention part.
FIG. 5 is an enlarged cross-section view of a main part
showing a conventional structure of a thrust plate and a
sliding part.
FIG. 6A is a plan view showing a structural example of a
thrust plate.
FIG. 6B is a cross-section through A - A of FIG. 6A.
FIG. 7A is a diagram showing separation of a coating
layer on a corner portion, as an example of a peeling problem
that occurs in the coating layer of the thrust plate corner
portion.
FIG. 7B is a diagram showing thickening of the coating
layer, as an example of a peeling problem that occurs in the
coating layer of the thrust plate corner portion.
DETAILED DESCRIPTION OF THE INVENTION
Hereunder, embodiments of a fluid machine according to

the present invention will be described with reference to the
drawings.
FIG. 1A is a cross-section of a scroll compressor 1 used
to compress refrigerant gas or the like. This scroll
compressor 1 is a horizontal type applicable to refrigeration
units through to air conditioning units, particularly
refrigeration units and air conditioning units for use in
vehicles, and has a housing 3 which constitutes the
approximate outer shape, and which houses a compressor within
an internal space. The housing 3 is equipped with a front
housing 5 of a low pressure side housing and a rear housing 7
of a high pressure side housing. These are secured together
in a condition with flanges provided on each of the housings
integrally clamped by means of bolts 9.
Inside the front housing 5, a crankshaft 11 is supported
so as to be freely rotatable about an axis L via a main
bearing 13 and a sub bearing 15. One end of the crankshaft 11
(on the left in the figure) is a small diameter shaft portion
11A. This small diameter shaft portion 11A is inserted
through the front housing 5 and protrudes to the left in FIG.
1A. The protruding portion of the small diameter shaft
portion 11A is provided with a solenoid clutch, or a pulley or
the like (omitted from figure), similar to known technology,
which receives a driving force, and power is transmitted from

a driving source such as an engine (omitted from figure) via a
V belt and so on.
Between the main bearing 13 and the sub bearing 15, a
mechanical seal (lip seal) 17 is disposed, so that the inside
of the housing 3 is airtight and sealed from the atmosphere.
The other end of the crankshaft 11 (on the right in the
figure) is provided with a large diameter shaft portion 11B.
Furthermore, on this large diameter shaft portion 11B is
integrally provided an eccentric pin 11C in a state where it
is biased by a predetermined dimension from the axis L of the
crankshaft 11. The large diameter shaft portion 11B and the
above-mentioned small diameter shaft portion 11A are each
supported in a freely rotatable manner by the front housing 5
via the main bearing 13 and the sub bearing 15. The eccentric
pin 11C is connected to an orbiting scroll member 27 via a
drive bush 19 and a drive bearing 21, and by rotating the
crankshaft 11, the orbiting scroll member 27 is orbitally
driven.
A balance weight 19A is integrally formed on the drive
bush 19 in order to cancel out the load inbalance which occurs
due to the orbital drive of the orbiting scroll member 27, and
orbits together with the orbiting drive of the orbiting scroll
member 27.

Furthermore, a fixed scroll member 25 and the orbiting
scroll member 27 constituting a scroll compression mechanism
23 are incorporated as a pair inside the housing 3. The fixed
scroll member 25 comprises an end plate 25A and a spiral-
shaped wrap 25B provided upright on the end plate 25A, while
the orbiting scroll member 27 comprises an end plate 27A and a
spiral-shaped wrap 27B provided upright on the end plate 27A.
The fixed scroll member 25 and the orbiting scroll member
27 pair is incorporated in an intermeshed state with their
respective centers separated by the radius of gyration, and
the spiral-shaped wraps 25B and 27B 180° out of phase. As a
result, between both of the scroll members 25 and 27, a pair
of compression spaces 29 which are limited by the end plates
25A and 27A and the spiral-shaped wraps 25B and 27B are formed
symmetrical with respect to the centres of the scrolls. The
fixed scroll member 25 is fixedly installed on the inner face
of the rear housing 7 by bolts 31. In the orbiting scroll
member 27, the eccentric pin 11C provided on one end of the
aforementioned crankshaft 11 is connected to a boss part
provided on the rear face of the end plate 27A, so as to
orbitally drive the orbiting scroll member 27.
Furthermore, regarding the orbiting scroll member 27, a
thrust plate 51 is fixedly installed on a thrust bearing face

5B formed on the front housing 5, and a projecting slide face
61 provided on the rear face of the end plate 27A is supported
in a contacted state against this thrust plate 51. The
orbiting scroll member 27 is configured so that it is
orbitally driven with respect to the fixed scroll member 25
while rotation is inhibited by means of a rotation inhibiting
mechanism 33 such as a pin ring or an Oldham ring or the like
interposed between the thrust plate 51 of the thrust bearing
face 5B and the slide face 61 of the orbiting scroll member
27.
As shown in FIG. 6A and FIG. 6B, the thrust plate 51 is a
member formed with a coating layer 51b such as fluororesin or
the like on the surface of a ring shaped thin steel plate 51a,
and receives the sliding pressure caused mainly by the gas
compression reaction force, from the slide face 61 of the
orbiting scroll member 27 when the scroll compressor 1 is
operating.
A discharge port 25C for discharging the compressed
refrigerant gas, is formed in the centre of the end plate 25A
of the fixed scroll member 25. The discharge port 25C is
provided with a discharge reed valve 37 attached to the end
plate 25A via a retainer 35. Moreover, a sealing member 39
such as an O-ring or the like is interposed on the rear face
side of the end plate 25A of the fixed scroll member 25 so as

to seal the inner face of the rear housing 7, forming a
discharge chamber 41 with the rear housing 7 which is divided
off from the space inside the housing 3. As a result, the
space inside the housing 3 excluding the discharge chamber 41
is configured so as to function as a suction chamber 43.
Refrigerant gas returning from the refrigerating cycle is
drawn into the suction chamber 43 via a suction inlet 45 which
is provided in the front housing 5, and after passing through
this suction chamber 43, the refrigerant gas is drawn into a
compression space 29 formed between the fixed scroll member 25
and the orbiting scroll member 27.
A sealing member 47 such as an O-ring is interposed
between the connecting faces of the front housing 5 and the
rear housing 7, and the suction chamber 43 formed inside the
housing 3 is airtight and sealed from the atmosphere.
A scroll compression mechanism 23 is housed within the
front housing 5. This front housing 5 is formed in a funnel
shape with the diameter reducing stepwise, and is provided
with; a large diameter trunk part 5A which accommodates the
fixed scroll member 25 and the orbiting scroll member 27, a
thrust receiving part 5C which is continuous from this trunk
part 5A with diameter reducing in the radial direction, for
forming the thrust bearing face 5B, an intermediate diameter
bearing support 5E which is continuous from the thrust

receiving part 5C with the diameter reduced further, for
forming a bearing container 5D for containing the main bearing
13, and a small diameter boss part 5F which is continuous from
the bearing support 5E for installing the sub bearing 15 and
the mechanical seal 17.
The rear housing 7 is formed in a bowl shape, and is
provided with a concave part 7A for forming the discharge
chamber 41, and a spigot part 7B fitted into the open end of
the trunk part 5A of the front housing 5. The aforementioned
sealing material 47 is interposed on the spigot part 7B. This
rear housing 7 is connected so as to cover one of the open
ends of the trunk part 5A of the front housing 5, and is
secured in a condition with both flange parts of the front
housing 5 and the rear housing 7 integrally fastened to each
other by the bolts 9.
The scroll compressor congured as described above
operates as described below.
A rotary driving force is transmitted from the external
drive source (omitted from figure) via the pulley or solenoid
clutch or the like to the crankshaft 11. When the crankshaft
11 rotates, the orbiting scroll member 27, which is connected
to the eccentric pin 11C of the crankshaft 11 via the drive
bush 19 and the drive bearing 21, is orbitally driven with

respect to the fixed scroll member 25 while rotation is
inhibited by means of the rotation inhibiting mechanism 33.
As a result, the refrigerant gas inside the suction chamber 43
is drawn into the compression space 29 which is formed in the
outermost radial direction. After the compression space 29
has reached a specified angle of rotation and suction is cut
off, it is moved to the central side while its capacity is
decreased. During this time the refrigerant gas is compressed
to a high pressure, and when the compression space 29 reaches
a position communicating with the discharge port 25C, the
discharge reed valve 37 is pushed open, discharging the
compressed gas into the discharge chamber 41. Then after
passing through the discharge chamber 41 the compressed gas is
further discharged outside the scroll compressor 1.
The scroll compressor 1 as described above, wherein the
thrust plate 51 formed by a coating layer 51b of fluororesin
or the like applied to its surface, is attached to the thrust
bearing face 5B of the front housing 5, and the slide face 61
of the orbiting scroll member 27 is supported on the thrust
plate 51 to orbit while sliding, is provided with a peeling
prevention part in order to reduce sliding pressure, with the
object of preventing peeling of the coating layer that is
caused by the end plate 27A of the orbiting scroll member 27
repeatedly contacting an edge portion 51C of the thrust plate

51, and also by receiving the sliding pressure caused by the
compression reaction force of the gas acting on the orbiting
scroll member 27.
Hereunder a first embodiment of the peeling prevention
part will be specifically described with reference to FIG. 1B.
The peeling prevention part in the figure is one where a
slide prohibited area is established on the edge portion 51C
of the thrust plate 51. That is, by operating the scroll
compressor 1, the orbiting scroll member 27 is orbitally
driven to revolve around the fixed scroll member 25 while its
rotation is inhibited, and due to the eccentric gyration about
the axis L, the orbiting scroll member 27 moves in a range
from the outermost slide face 61 to the innermost slide face
61' . Accordingly, in the description below, a slide range S
through which the slide face 61 moves while in contact with
the thrust plate 51, extends from the outer peripheral face of
the slide face 61 when moved to the outermost side to the
inner peripheral face of the slide face 61' when moved to the
innermost side.
Consequently in the sliding part of the orbiting scroll
end plate rear face, as a structure where one part of the end
plate 27A touches, by setting the slide range S so that it is
smaller than the width W of the thrust plate 51, and in the

centre of the width W excluding both edge portions of the
thrust plate 51a, a slide prohibited area can be formed on
both sides of the slide range S where the sliding part 61 does
not slide.
Because this slide prohibited area is an area where the
sliding part 61 never slides, the sliding pressure does not
act directly on the edge portion 51C of the thrust plate 51
where formation of a satisfactorily uniform coating layer 51b
is difficult. Accordingly, the peeling prevention part
provided with a slide prohibited area can reduce the sliding
pressure acting on the edge portion 51C of the thrust plate 51
to zero. Therefore it is possible to prevent peeling of the
coating layer 51b which is caused as a result of the sliding
pressure acting repetitively.
It is possible to adjust tho above slide range S by
configuring the rear face of the end portion 27A of the
orbiting scroll member 27 with part slightly removed.
Moreover, with regard to the slide face 61 of the directly
sliding orbiting scroll member 27, needless to say it is
preferable for the edge portion in the slide range S to be
rounded.
Next, a second embodiment of the above peeling prevention
part will be described with reference to FIG. 2.
This peeling prevention part is one where a flexible area

is established on the edge portion 51C of the thrust plate 51.
This flexible area is a cantilevered part provided on both
sides of the thrust plate 51, and for example because there is
no flat support of the thrust bearing face 5B, the sliding
pressure received from the slide face 61 can be flexibly
absorbed. That is, when a sliding pressure acts in the
flexible area of the thrust plate edge portion 51C where
formation of a satisfactorily uniform coating layer 51a is
difficult, the cantilevered edge portions 51C of the thrust
plate 51 are able to absorb the sliding pressure flexibly.
Therefore it becomes possible to prevent peeling of the
coating layer 51b caused as a result of the repeatedly acting
sliding pressure.
Incidentally, in the flexible area described above,
rather than making the flat thrust bearing face 5B the support
face, for example as in the modified example shown in FIG. 3,
it is preferable to make a thrust bearing face 5B' in which a
space formed between the thrust plate 51 Changes gradually,
such as a curved or inclined face where the space formed
between the thrust plate 51 is greater at both edge portions,
the support face. That is, as the space gradually changes,
the flexibility of the thrust plate 51 also changes gradually,
thereby enabling a localised concentration of stress to be
avoided. Accordingly, a thrust plate 51 which flexibly

receives the repetitive sliding pressure caused by the orbital
motion of the orbiting scroll member 27 has improved
durability due to a modification of the gradual shape change.
Finally, a third embodiment of the above peeling
prevention part will be described with reference to FIG. 4.
This peeling prevention part is a pocket forming part 61a
due to a curved face or bevelled edge formed on both edge
portions of the slide face 61. That is, in a slide face 61
which is supported by and slides on a thrust plate 51 fixedly
supported on a flat thrust bearing face 5B, a gradually
changing space is formed between both edge portions of the
slide face 61 and the thrust plate 51, due to formation of a
curved face or bevelled edge on either both edge portions, or
on either one of the inner or outer peripheries. Accordingly,
with respect to the thrust plate edge portion 51C where
formation of a satisfactorily uniform coating layer 51a is
difficult, there is no direct sliding pressure acting from the
slide face 61 on the thrust plate 51, and the sliding pressure
acting on the thrust plate edge portion 51C can be reduced to
zero.
With reference to the size of the thrust plate 51, in the
case where the thrust plate 51 is larger than the trajectory
of the orbiting scroll, in the first place, it is possible to

establish the thrust plate outer diameter edge part so that it
does not slide against the end plate 27A of the orbiting
scroll member 27. Therefore the problem of the coating layer
51b peeling from the plate outer diameter edge part is not
encountered, but as far as the inner diameter edge part is
concerned the invention of this application is effective.
However in that case, since the size of the thrust plate 51 is
unnecessarily increased, this produces the disadvantage that
the entire outer diameter of the scroll compressor unit
becomes too large. Because of this, the present invention is
more suitable when the thrust plate is established at a size
smaller than the trajectory of the orbiting scroll, and by
making the outer diameter of the scroll compressor unit
smaller, also has the advantage of maintaining reliability.
Incidentally, because the thickness of the thrust plate
51 coating film is uneven, it was necessary to finely adjust
the scroll tip space of the scroll compression mechanism 23 by
means of a shim (not shown in figure). Specifically, during
the assembly process of the scroll compressor 1, a thin plate-
shaped dimension adjusting shim was installed between the
front housing 5 and the rear housing 7 in order to finely
adjust the space between the orbiting scroll member 27 and the
fixed scroll member 25.
However, by adopting the present invention as described

above, because the coating layer 51b becomes difficult to peel
off, thereby increasing reliability, it is possible to make
the film thinner. Accordingly, if for example the thrust
plate 51 is established as described below, it becomes
possible to eliminate the shim.
That is, the plate thickness of the thin steel plate 51a
is established at less than 0.9mm, and the thickness of the
coating layer 51b is established at less than 20um. The
tolerance permitted in this case is; ±0.005mm for a thin steel
plate 51a with a plate thickness between 0.7mm and 0.9mm, and
±0.003mm for a coating layer 51b with a thickness less than
20um. Therefore application of a surface treatment of the
coating layer 51b on the thin steel plate 51a of the thrust
plate 51 is sufficient, and it is possible to eliminate the
shim. In other words, the thrust plate 51 enables adjustment
of the scroll tip space.
In this way, according to the present invention described
above, by providing the peeling prevention part which can
reduce the sliding pressure acting on the edge portion 51C of
the thrust plate 51 from the slide face 61, it is possible to
reduce the repeatedly applied sliding pressure on the edge
portion 51C of the thrust plate 51 where formation of a
satisfactorily uniform coating layer 51b is difficult.

Therefore, peeling of the coating layer 51b caused by sliding
of the orbiting scroll member 27 is prevented, and a desired
level of lubrication can be maintained over a long period of
time. Hence a remarkable effect is obtained where reliability
and durability of the scroll compressor 1 is improved.
The present invention is not limited to the above
embodiments, and other modifications are possible within a
scope which does not depart from the gist of the present
invention.

We claim:
1. A scroll compressor comprising:
a thrust plate,
a coating which is applied to a surface of said thrust plate,
a housing having a thrust bearing face to which said thrust plate is fixedly attached,
an orbiting scroll member having a slide face which is supported by said thrust plate
and which orbits while sliding, and
a peeling prevention part which reduces a sliding pressure acting on a thrust plate
edge portion from said slide face,
wherein said peeling prevention part is a flexible area established on an edge portion
of said thrust plate.
2. A scroll compressor as claimed in claim 1, wherein said peeling prevention part is a
curved face or bevelled edge formed on an edge portion of said slide face.

There is provided a scroll compressor in which
reliability and durability is increased by preventing peeling

of a coating layer applied to a thrust plate, to maintain a
desired level of lubrication for a long period of time.

A scroll compressor 1 comprises a thrust plate 51, a coating

which is applied to a surface of the thrust plate, a housing
3 having a thrust bearing face 5B to which the thrust plate 51
is attached, an orbiting scroll member 27 having a slide face
61 which is supported by the thrust plate 51 and which orbits

while sliding, and a peeling prevention part which reduces a
sliding pressure acting on an edge portion 51C of the thrust
plate 51 from the slide face 61.