JP2016151264A - Scroll compressor - Google Patents

Abstract

Scroll compression that can prevent troubles caused by interference between a thrust plate and other parts, even if it is a thin thrust plate with a plate thickness of 2 mm or less, firmly fixed on the thrust bearing side to prevent its movement The purpose is to provide a machine. A fixed scroll in which an end plate is fixedly installed on a fixed member, and a compression chamber is formed by meshing with the fixed scroll, and the rear surface of the end plate 11A is supported by a thrust bearing portion 12 and driven to revolve around the fixed scroll. Scroll compressor provided with an orbiting scroll and a thin plate-like thrust plate 17 made of a wear-resistant material that is installed on the thrust bearing surface 12A of the thrust bearing portion 12 and on which the back surface of the end plate 11A of the orbiting scroll slides. The thrust plate 17 is provided with elastically deformable hook-shaped locking claws 18 provided at a plurality of locations on the outer periphery, and the hook portions 18A of the locking claws 18 are engaged with the thrust bearing portion 12 side. It is fixedly installed by stopping. [Selection] Figure 2

Description

  The present invention relates to a scroll compressor in which a thrust plate made of a wear-resistant material is installed in a thrust bearing portion that supports an orbiting scroll.

  The scroll compressor includes a compression mechanism constituted by a pair of fixed scrolls and orbiting scrolls in which spiral wraps are erected on one surface of an end plate. The end plate of the fixed scroll is fixedly installed on a fixed member, and the orbiting scroll is provided. Is engaged with the fixed scroll to form a compression chamber, and the rear surface of the end plate is supported by a thrust bearing portion, whereby the orbiting scroll is installed around the fixed scroll so as to be capable of revolving orbiting. A thin thrust plate made of a wear-resistant material such as a steel plate for preventing seizure is installed on the thrust bearing surface of the thrust bearing portion on which the orbiting scroll slides by the orbiting drive.

  As shown in Patent Document 1, when the thrust plate is a plate having a relatively large thickness, for example, about 5 mm, the thrust plate is directly fixed to the thrust bearing portion via a countersunk screw or the like. When the plate thickness is about 0.5 to 2 mm, since it cannot be screwed directly, as shown in Patent Document 2, bent pieces are provided at a plurality of locations on the outer periphery. The bent piece is locked to the notch portion on the thrust bearing portion side so that the thrust plate is held on the thrust bearing surface.

JP 2002-242859 A JP 2004-60469 A

  As shown in the above-mentioned Patent Document 1, when the thickness of the thrust plate is increased, the axial dimension of the scroll compressor is increased by that amount. Therefore, an increase in size, weight, and cost of the compressor are inevitable. . Therefore, a thin plate of about 0.5 to 2 mm is used for size reduction, weight reduction, and cost reduction. When installing such a thin plate-shaped thrust plate, a bank portion lower than the thickness of the thrust plate is provided on the outer periphery of the thrust bearing surface, and the thrust plate is installed in a concave portion on the inner peripheral side from the bank portion. The curved piece is prevented from rotating by being locked in the notch portion on the thrust bearing portion side.

  However, the thrust plate is held in a sandwich state by being sandwiched between the back surface of the end plate of the orbiting scroll and the thrust bearing portion, and is not directly fixed, so when the thrust load becomes excessive due to liquid compression or the like, The thrust plate is not restrained due to breakage of the bent piece or wear of the bank, etc., so that it moves and interferes with the rotation prevention mechanism and the housing provided between the back of the end plate of the orbiting scroll and the thrust bearing, and compression There were problems such as causing machine failure and damage.

  The present invention has been made in view of such circumstances, and even a thin plate-like thrust plate having a plate thickness of 2 mm or less is firmly fixed on the thrust bearing portion side to prevent its movement. Then, it aims at providing the scroll compressor which can prevent the trouble by a thrust plate interfering with other components.

In order to solve the above problems, the scroll compressor of the present invention employs the following means.
That is, the scroll compressor according to the present invention includes a fixed scroll in which an end plate is fixedly installed on a fixed member, a compression chamber formed by meshing with the fixed scroll, and a back surface of the end plate supported by a thrust bearing portion. A orbiting scroll that is driven to revolve around a fixed scroll, and a thin thrust plate that is installed on a thrust bearing surface of the thrust bearing portion and is made of a wear-resistant material that slides on the back surface of the end plate of the orbiting scroll. The thrust plate has elastically deformable hook-shaped locking claws provided at a plurality of locations on the outer periphery, and is fixed by locking the hook portions of the locking claws to the thrust bearing portion side. It is characterized by being installed.

  According to the present invention, the thrust plate includes elastically deformable hook-shaped locking claws provided at a plurality of locations on the outer periphery, and the hook portion of the locking claws is locked to the thrust bearing portion side. Since the thin thrust plate installed on the thrust bearing surface of the thrust bearing portion is fixed by the elastically deformable hook-shaped hooking claw hook portions provided at a plurality of locations on the outer periphery of the thrust plate. Even if the thrust plate is a thin plate-like thrust plate having a thickness of 2 mm or less, it can be fixed and installed directly on the thrust bearing surface of the thrust bearing portion. Therefore, restricting the movement of the thin thrust plate due to excessive thrust load or wear on the bank, etc., and the thrust plate moves and interferes with other parts such as the rotation prevention mechanism and the housing. Trouble can be prevented.

  Furthermore, the scroll compressor according to the present invention is characterized in that, in the scroll compressor described above, the hook-shaped locking claws are provided at predetermined intervals at at least two locations on the outer periphery of the thrust plate.

  According to the present invention, since the hook-shaped locking claw is provided at a predetermined interval at at least two locations on the outer periphery of the thrust plate, the hook of the hook-shaped locking claw is provided at two or more locations on the thrust plate. By locking the portion to the thrust bearing portion side, it can be fixedly installed directly on the thrust bearing surface of the thrust bearing portion. Accordingly, the movement of the thin thrust plate can be reliably regulated by the hooking of the locking claw, and troubles caused by the thrust plate moving and interfering with other components such as the rotation prevention mechanism and the housing can be prevented.

  Furthermore, the scroll compressor according to the present invention is engaged with the fixed scroll to form a compression chamber, the end plate back surface is supported by a thrust bearing portion, and the orbiting scroll is driven to revolve around the fixed scroll, A thin plate-shaped thrust plate that is installed on a thrust bearing surface of a thrust bearing portion and is made of a wear-resistant material on which a back surface of the end plate of the orbiting scroll slides, and the thrust plate includes a plurality of outer circumferential surfaces on the back surface side. It comprises a weld nut provided at a location, and is fixedly installed via a bolt that is screwed to the weld nut from the opposite bearing surface side of the thrust bearing portion.

  According to the present invention, the thrust plate includes weld nuts provided at a plurality of locations on the outer periphery on the back surface side, and is fixedly installed via bolts screwed to the weld nuts from the opposite bearing surface side of the thrust bearing portion. Therefore, a thin plate-like thrust plate installed on the thrust bearing surface of the thrust bearing portion is screwed to the weld nut from the opposite side of the thrust bearing portion at a plurality of locations on the outer periphery of the thrust plate. Even if the thrust plate is a thin plate-like thrust plate of 2 mm or less, it can be fixedly installed by bolting it directly on the thrust bearing surface of the thrust bearing portion. Therefore, restricting the movement of the thin thrust plate due to excessive thrust load or wear on the bank, etc., and the thrust plate moves and interferes with other parts such as the rotation prevention mechanism and the housing. Trouble can be prevented.

  Furthermore, the scroll compressor of the present invention is characterized in that, in the scroll compressor described above, the bolt is an SCH bolt having a hexagonal hole in the head.

  According to the present invention, since the bolt is an SCH bolt having a hexagonal hole in the head, even if it is not possible to secure a sufficient space on the side opposite the bearing surface of the thrust bearing, By using SCH bolts with hexagonal holes, the thrust plate can be fixed by bolting directly onto the thrust bearing surface of the thrust bearing portion. Therefore, the movement of the thin plate-like thrust plate is surely restricted by bolting, and troubles caused by the thrust plate moving and interfering with other parts such as the rotation prevention mechanism and the housing can be prevented.

  Furthermore, the scroll compressor according to the present invention is engaged with the fixed scroll to form a compression chamber, the end plate back surface is supported by a thrust bearing portion, and the orbiting scroll is driven to revolve around the fixed scroll, A thin plate-like thrust plate that is installed on the thrust bearing surface of the thrust bearing portion and that slides on the back surface of the end plate of the orbiting scroll. The thrust bearing portion includes a plurality of circumferentially arranged thrust plates. A countersunk screw hole is provided at a location, and on the thrust plate side, a countersunk hole with a bent portion fitted to the countersunk screw hole is provided on the periphery, and the thrust plate is embedded in the countersunk hole The thrust bearing is fixedly installed through a countersunk screw.

  According to the present invention, countersunk screw holes are provided at a plurality of locations on the circumference of the thrust bearing portion side, and a countersunk hole provided with a bent portion fitted to the countersunk screw hole at the periphery is provided on the thrust plate side. Since the thrust plate is fixedly installed in the thrust bearing part via a countersunk screw that is embedded in the countersunk hole, the thin plate-like thrust plate installed on the thrust bearing surface of the thrust bearing part is connected to the thrust bearing part side. The countersunk screw hole is fitted with a countersunk hole with a bent part at the periphery provided on the thrust plate side, and the countersunk screw is screwed to the countersunk screw hole of the thrust bearing part through the countersunk hole By doing so, even if the thrust plate is a thin plate-like thrust plate of 2 mm or less, it can be fixedly installed by screwing it directly onto the thrust bearing surface of the thrust bearing portion. Therefore, restricting the movement of the thin thrust plate due to excessive thrust load or wear on the bank, etc., and the thrust plate moves and interferes with other parts such as the rotation prevention mechanism and the housing. Trouble can be prevented.

  Furthermore, in the scroll compressor according to the present invention, in the scroll compressor described above, the head surface of the countersunk screw is embedded in the countersunk hole of the thrust plate and is positioned at a position recessed from the bearing surface. It is characterized by being.

  According to the present invention, since the head surface of the countersunk screw is embedded in the countersunk hole of the thrust plate and is located at a position recessed from the bearing surface, the thrust plate having a plate thickness of 2 mm or less is placed on the thrust bearing surface. Even if it is directly screwed and fixed with a countersunk screw from the side, it can be fixed with a screw so that the head of the countersunk screw does not protrude from the bearing surface. Therefore, the movement of the thin plate-like thrust plate can be surely restricted by screwing, and troubles caused by the thrust plate moving and interfering with other components such as the rotation prevention mechanism and the housing can be prevented.

  According to the present invention, even if the thrust plate installed in the thrust bearing portion is a thin plate-like thrust plate of 2 mm or less, it is locked on the thrust bearing surface of the thrust bearing portion by the hook portion of the hook-shaped locking claw. It can be fixed directly by bolting or countersunk screwing, so that the movement of the thin thrust plate due to excessive thrust load or bank wear is restricted, and the thrust plate moves to prevent rotation It is possible to prevent troubles such as failure and damage of the compressor due to interference with other components.

It is a longitudinal cross-sectional view of the principal part of the scroll compressor which concerns on 1st Embodiment of this invention. It is an expanded sectional view of the part which fixes the thrust plate of the said scroll compressor. It is an expanded sectional view of the part which fixes the thrust plate which concerns on 2nd Embodiment of this invention. It is an expanded sectional view of the part which fixes the thrust plate which concerns on 3rd Embodiment of this invention.

Embodiments according to the present invention will be described below with reference to the drawings.
[First Embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to FIG.
FIG. 1 shows a longitudinal sectional view of a main part of the scroll compressor according to the first embodiment of the present invention, and FIG. 2 shows an enlarged sectional view of a portion for fixing the thrust plate.
The scroll compressor 1 includes a housing 2 that constitutes an outer shell thereof. The housing 2 is fitted into a cylindrical rear housing 3 having a cup shape, and is fitted to the opening side of the housing 2 via a seal member such as a 0-ring, and is integrally coupled with a bolt or the like, thereby being hermetically sealed. And a front housing 4 constituting the.

  On the front housing 4 side, a drive shaft 7 is rotatably supported via a main bearing 5 and a sub bearing 6. The drive shaft 7 is provided with a crank pin 8 that is eccentric to a predetermined dimension with respect to the center of the shaft on one end side, and the other end side protrudes from the bearing boss portion 4A of the front housing 4 to the outside. A pulley with an electromagnetic clutch (not shown) is attached to the projecting end of the drive shaft 7 to the outside so that power is input from an external drive source such as an engine. The opening on the housing 2 side from which the drive shaft 7 protrudes is sealed with respect to the atmosphere side by a lip seal 9.

  A scroll compression mechanism 10 is built in the rear housing 3. The scroll compression mechanism 10 is composed of a pair of fixed scrolls (not shown) having a spiral wrap standing on one surface of an end plate and the orbiting scroll 11, and the end plate is a fixed member. The rear housing 3 is fixedly installed via bolts or the like. On the other hand, the orbiting scroll 11 is engaged with the fixed scroll to form a compression chamber, and the back surface of the end plate 11A is supported by the thrust bearing portion 12 provided in the front housing 4, and revolves around the fixed scroll. It is installed so that it can be swiveled.

  The orbiting scroll 11 includes a boss portion 11B on the back surface of the end plate 11A, and the boss portion 11B is a driven crank mechanism comprising a drive bush 13 and an orbiting bearing 14 with respect to a crank pin 8 provided at one end of the drive shaft 7. By being connected via 15, it is installed so as to be driven to revolve around the fixed scroll. Further, the orbiting scroll 11 is prevented from rotating by a rotation preventing mechanism 16 such as an Oldham ring interposed between the back surface of the end plate 11A and the thrust bearing portion 12, and is driven to revolve orbit. Yes. In addition, the rotation prevention mechanism 16 may use another system such as a pin / link system in addition to the one using the Oldham ring.

  Further, a steel plate or the like for preventing seizure by forming a bank portion 12B of a predetermined height on the outer periphery of the thrust bearing surface 12A of the thrust bearing portion 12 that slides when the orbiting scroll 11 revolves. A thin plate-like thrust plate 17 made of a wear-resistant material is installed. In addition, the scroll compressor 1 of the above structures is widely known conventionally, and is not exceptional. The feature of this embodiment is that the installation structure of the thrust plate 17 is improved as follows.

  The thrust plate 17 here is a thin plate having a thickness of 2 mm or less, has a donut-shaped disk shape, and is formed on the thrust bearing surface 12A inside the bank portion 12B of the thrust bearing portion 12. It can be installed. As shown in FIG. 2, a plurality of hook portions 18 </ b> A having hook portions 18 </ b> A that are locked by being elastically deformed with respect to the portion on the side opposite to the bearing surface of the thrust bearing portion 12 as shown in FIG. 2. The locking claws 18 having the hook shape are provided at at least two, preferably three or more at predetermined intervals (equal intervals) in the circumferential direction.

  The hook portion 18A of the hook-shaped locking claw 18 is locked to an anti-bearing surface side portion on the thrust bearing portion 12 side through a notch portion 12C provided on the outer peripheral surface of the thrust bearing portion 12. Thus, the thin plate-like thrust plate 17 is fixedly installed on the thrust bearing surface 12A of the thrust bearing portion 12.

  As shown in FIG. 2, the hook portion 18 </ b> A of the hook-shaped locking claw 18 is not limited to the hook portion 18 </ b> A that is bent at three places, but is bent at two right angles at two places. It can be deformed into hook portions of various shapes such as those bent in a triangular shape, smoothly bent, and those in which the hook portion is folded back.

  Further, in the present embodiment, the portion on the thrust bearing portion 12 side where the hook portion 18A of the hook-shaped locking claw 18 is hooked is a reduced thickness portion 4A provided on the fitting protrusion with respect to the rear housing 3 of the front housing 4. However, the present invention is not limited to this. For example, a configuration in which a hook portion is appropriately provided on the outer peripheral surface of the thrust bearing portion 12 may be employed.

With the configuration described above, according to the present embodiment, the following operational effects can be obtained.
In the scroll compressor 1, when the electromagnetic clutch is turned on and the drive shaft 7 is rotated by obtaining a driving force from an external drive source, the orbiting scroll 11 is driven to revolve around the fixed scroll and is compressed as is well known. Operation is performed. At this time, the thrust force due to the compression reaction force acting on the orbiting scroll 11 is supported by the thrust bearing portion 12 via the thrust plate 17 on which the back surface of the end plate 11A slides.

  As described above, the thrust plate 17 of this embodiment is configured such that the hook portion 18A of the elastically deformable hook-shaped locking claw 18 provided at a plurality of locations on the outer periphery is locked to the thrust bearing portion 12 side. It is fixedly installed on the thrust bearing surface 12A of the bearing portion 12. For this reason, even if the thrust plate 17 is a thin plate-like thrust plate 17 of 2 mm or less, it can be directly fixedly installed on the thrust bearing surface 12 of the thrust bearing portion 12.

  Accordingly, when the thrust load becomes excessive due to liquid compression or the like, or the movement of the thin plate-like thrust plate 17 due to wear of the bank portion 12B or the like can be regulated, the thrust plate 17 moves and the rotation prevention mechanism 16 or the housing 2 is moved. Troubles such as failure and damage of the compressor 1 due to interference with other components such as can be prevented with a simple configuration.

  In addition, since the hook-shaped locking claws 18 are provided at predetermined intervals at at least two positions on the outer periphery of the thrust plate 17, the thrust plate 17 is hooked to the hook-shaped locking claws 18 at two or more positions. By locking 18A on the thrust bearing portion 12 side, the thrust bearing portion 12 can be directly fixed and installed on the thrust bearing surface 12A. Therefore, the movement of the thin plate-like thrust plate 17 is surely restricted by the hooking of the locking claw 18, and troubles caused by the thrust plate 17 moving and interfering with other parts such as the rotation prevention mechanism 16 and the housing 2 are prevented. be able to.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIG.
This embodiment is different from the first embodiment described above in that the thrust plate 17 is fixedly installed using a weld nut and a bolt. Since other points are the same as those in the first embodiment, description thereof will be omitted.
In the present embodiment, as shown in FIG. 3, a plurality of locations (two or more, preferably two or more on the outer circumference on the back side of the thin thrust plate 17 installed on the thrust bearing surface 12A of the thrust bearing portion 12 are used. Weld nuts 19 are welded at predetermined intervals (equal intervals) at three or more locations.

  The weld nut 19 is disposed in the recesses 12D provided at a plurality of locations on the thrust bearing surface 12A, and the weld nut 19 is opposed to the thrust bearing portion 12 from the side opposite the bearing surface. The SCR bolt 20 having the hexagonal hole 20A on the head is screwed so that the thin thrust plate 17 having a thickness of 2 mm or less can be fixedly installed inside the bank portion 12B on the thrust bearing surface 12A. ing.

  With the above configuration, even if the thrust plate 17 is a thin plate-like thrust plate 17 having a thickness of 2 mm or less, it is fixedly installed by bolting directly on the thrust bearing surface 12A of the thrust bearing portion 12 via the SCH bolt 20. can do. Therefore, the compressor is controlled by restricting the movement of the thin thrust plate 17 due to excessive thrust load or wear of the bank portion 12B, and the thrust plate 17 moves and interferes with other components such as the rotation prevention mechanism 16 and the housing 2. 1 troubles such as failure and damage can be prevented.

  Further, since the bolt 20 for fastening the thrust plate 17 by bolting is the SCH bolt 20 having a hexagonal hole 20A in the head, a sufficient space portion is secured on the side opposite to the bearing surface of the thrust bearing portion 12. Even if it is not possible, the thrust plate 17 can be bolted directly on the thrust bearing surface 12A of the thrust bearing portion 12 and fixedly installed by bolting using the hexagonal hole 20A. Therefore, the movement of the thin plate-like thrust plate 17 is reliably regulated by bolting, and troubles caused by the thrust plate 17 moving and interfering with other components such as the rotation prevention mechanism 16 and the housing 2 can be prevented.

[Third Embodiment]
Next, a third embodiment of the present invention will be described with reference to FIG.
The present embodiment is different from the first and second embodiments described above in that the thrust plate 17 is fixedly installed using a countersunk screw. Since other points are the same as those in the first and second embodiments, description thereof will be omitted.
In the present embodiment, since the thin plate-like thrust plate 17 is fixedly installed on the thrust bearing surface 12A using the countersunk screws 21, countersunk screw holes are provided at a plurality of positions on the circumference of the bearing surface 12A of the thrust bearing portion 12. 12E, a countersunk hole 22 provided with a bent portion 22A fitted to the countersunk screw hole 12E is provided on the thrust plate side, and a countersunk screw 21 in which the thrust plate 17 is embedded in the countersunk hole 22 is provided. And fixedly installed on the thrust bearing portion 12.

  With the above-described configuration, even if the thrust plate 17 is a thin plate-like thrust plate 17 having a thickness of 2 mm or less, the thrust plate 17 is placed on the thrust bearing portion 12 so that the head of the countersunk screw 21 does not protrude on the bearing surface. The thrust bearing surface 12A can be fixed directly by screwing. Therefore, the compressor is controlled by restricting the movement of the thin thrust plate 17 due to excessive thrust load or wear of the bank portion 12B, and the thrust plate 17 moves and interferes with other components such as the rotation prevention mechanism 16 and the housing 2. 1 troubles such as failure and damage can be prevented.

  Further, since the head surface of the countersunk screw 21 is embedded in the countersunk hole 22 of the thrust plate 17 and is located at a position recessed from the bearing surface, the thrust plate 17 having a plate thickness of 2 mm or less is attached to the thrust bearing surface. Even if it is directly screwed and fixed by the countersunk screw 21 from the 12A side, it can be fixed by screwing so that the head of the countersunk screw 21 does not protrude from the bearing surface. Therefore, the movement of the thin plate-like thrust plate can be surely restricted by screwing, and troubles caused by the thrust plate moving and interfering with other components such as the rotation prevention mechanism and the housing can be prevented.

  In addition, this invention is not limited to the invention concerning the said embodiment, In the range which does not deviate from the summary, it can change suitably. For example, in the above-described embodiment, an example in which the present invention is applied to an open-type scroll compressor that is driven by obtaining power from the outside has been described. However, the present invention can be similarly applied to a scroll compressor in which a motor is built in a housing. It is.

DESCRIPTION OF SYMBOLS 1 Scroll compressor 2 Housing 3 Rear housing 4 Front housing 11 Orbiting scroll 11A End plate 12 Thrust bearing part 12A Thrust bearing surface 12E Countersunk screw hole 17 Thrust plate 18 Hook shape latching claw 18A Hook part 19 SCH bolt 20A Hex Hole 21 Countersunk screw 22 Countersunk hole 22A Bending part

Claims (6)

A fixed scroll having an end plate fixedly installed on a fixed member;
A revolving scroll that is engaged with the fixed scroll to form a compression chamber, and whose end plate back surface is supported by a thrust bearing portion and revolved around the fixed scroll;
A thin plate-like thrust plate that is installed on a thrust bearing surface of the thrust bearing portion and is made of a wear-resistant material that slides on the back surface of the end plate of the orbiting scroll;
The thrust plate is provided with elastically deformable hook-shaped locking claws provided at a plurality of locations on the outer periphery, and is fixedly installed by locking the hook portions of the locking claws to the thrust bearing portion side. A scroll compressor characterized by that.   2. The scroll compressor according to claim 1, wherein the hook-shaped locking claws are provided at predetermined intervals in at least two locations on the outer periphery of the thrust plate. A revolving scroll that is engaged with the fixed scroll to form a compression chamber, and whose end plate back surface is supported by a thrust bearing portion and revolved around the fixed scroll;
A thin plate-like thrust plate that is installed on a thrust bearing surface of the thrust bearing portion and is made of a wear-resistant material that slides on the back surface of the end plate of the orbiting scroll;
The thrust plate includes weld nuts provided at a plurality of locations on the outer periphery on the back surface side, and is fixedly installed via bolts screwed to the weld nut from the opposite bearing surface side of the thrust bearing portion. A scroll compressor characterized by that.   The scroll compressor according to claim 3, wherein the bolt is an SCH bolt having a hexagonal hole in a head. A revolving scroll that is engaged with the fixed scroll to form a compression chamber, and whose end plate back surface is supported by a thrust bearing portion and revolved around the fixed scroll;
A thin plate-like thrust plate that is installed on a thrust bearing surface of the thrust bearing portion and is made of a wear-resistant material that slides on the back surface of the end plate of the orbiting scroll;
The thrust bearing portion is provided with countersunk screw holes at a plurality of locations on the circumference, and the thrust plate side is provided with a countersunk hole with a bent portion that fits into the countersunk screw hole on the periphery. The scroll compressor is characterized in that the thrust plate is fixedly installed on the thrust bearing portion via a countersunk screw embedded in the countersunk hole. The scroll compressor according to claim 5, wherein a head surface of the countersunk screw is embedded in the countersunk hole of the thrust plate and is located at a position recessed from the bearing surface.

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