Scroll compressor
The scroll compressor addresses weight, cost, and durability issues by using a sliding bearing design with a connecting member recess and shared material for the bearing, achieving reduced centrifugal forces and improved lubrication for enhanced durability.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- HANON SYST CO LTD
- Filing Date
- 2025-06-29
- Publication Date
- 2026-06-04
AI Technical Summary
Conventional scroll compressors face issues with increased weight, cost, and reduced durability due to the use of rolling bearings, which also incur higher centrifugal forces during operation.
The scroll compressor employs a sliding bearing design where the pivot scroll post is accommodated in a connecting member recess, with the bearing coated to facilitate sliding, and the connecting member and bearing are often made of the same material to reduce weight and cost, and the design allows for a variable rotation radius to prevent damage.
This design reduces weight and cost while enhancing durability by minimizing centrifugal forces and extending the lifespan of the bearing through improved lubrication and reduced parts, thereby stabilizing the assembly.
Smart Images
Figure KR2025009158_04062026_PF_FP_ABST
Abstract
Description
Scroll compressor
[0001] The present invention relates to a scroll compressor, and more specifically, to a scroll compressor capable of compressing a refrigerant using a fixed scroll and a rotating scroll.
[0002] Generally, an air conditioning (A / C) system is installed in a vehicle for heating and cooling the interior. As a component of the cooling system, this air conditioning system includes a compressor that compresses low-temperature, low-pressure gaseous refrigerant introduced from an evaporator into high-temperature, high-pressure gaseous refrigerant and sends it to a condenser.
[0003] The above compressors include reciprocating types, which compress the refrigerant through the reciprocating motion of a piston, and rotary types, which perform compression through rotational motion. Depending on the power transmission method, the reciprocating type includes crank types, which transmit power to multiple pistons using a crank, and swashplate types, which transmit power through a rotating shaft equipped with a swashplate. The rotary type includes vane rotary types, which use a rotating rotary shaft and vanes, and scroll types, which use a slewing scroll and a fixed scroll.
[0004] Among these, scroll compressors are widely used for refrigerant compression in air conditioning systems and the like due to their advantages of achieving a relatively high compression ratio compared to other types of compressors, as well as stable torque resulting from the smooth succession of the refrigerant suction, compression, and discharge strokes.
[0005] FIG. 1 is a cross-sectional view illustrating a conventional scroll compressor, and FIG. 2 is an exploded perspective view illustrating a rotating scroll and parts assembled thereto in the scroll compressor of FIG. 1.
[0006] Referring to FIGS. 1 and 2, a conventional scroll compressor comprises a fixed scroll (80), a pivot scroll (70) engaged with the fixed scroll (80), a drive shaft (30) rotated by a drive source (20), an eccentric bush (50) rotated together with the drive shaft (30) and pivotally moves the pivot scroll (70), and a bearing (60) interposed between the pivot scroll (70) and the eccentric bush (50).
[0007] Here, the eccentric bush (50) comprises a recess (52) into which the drive shaft (30) is inserted, an eccentric portion (54) protruding from the recess (52) to the opposite side of the drive shaft (30) at an eccentric position relative to the drive shaft (30), and a balance weight portion (56) formed on the opposite side of the eccentric portion (54) relative to the center of the recess (52), and the bearing (60) is formed as a rolling bearing having an outer ring (62) whose outer surface is pressed into the pivoting scroll (70), an inner ring (64) which is received in the inner circumference of the outer ring (62) and whose inner surface is pressed into the outer circumference of the eccentric portion (54), and a roller or ball (66) interposed between the outer ring (62) and the inner ring (64).
[0008] However, in such conventional scroll compressors, as the bearing (60) is formed as a rolling bearing, not only is the weight and cost of the bearing (60) increased, but the centrifugal force of the assembly of the bearing (60) and the slewing scroll (70) increases during operation, which increases the weight and cost of the balance weight part (56) and reduces the lifespan of the bearing (60). In other words, there was a problem of increased weight and cost and reduced durability.
[0009] Accordingly, the present invention aims to provide a scroll compressor capable of reducing weight and cost and improving durability.
[0010] To achieve the above-mentioned purpose, the present invention provides a scroll compressor comprising: a fixed scroll; a pivot scroll engaged with the fixed scroll; a drive shaft rotated by a drive source; a connecting member coupled to the drive shaft to pivot the pivot scroll; and a bearing interposed between the pivot scroll and the connecting member; wherein the pivot scroll includes a pivot scroll post protruding toward the connecting member, and the connecting member includes a connecting member recess that accommodates the pivot scroll post.
[0011] The above bearing may be formed as a sliding bearing that supports between the outer surface of the slewing scroll post and the inner surface of the connecting member recess.
[0012] The bearing comprises an outer surface that is pressed into the inner surface of the connecting member recess and an inner surface that can contact the outer surface of the slewing scroll post, and the inner surface of the bearing may be coated with a lubricating film so as to be able to slide with the outer surface of the slewing scroll post.
[0013] The bearing comprises an inner surface that is pressed into the outer surface of the slewing scroll post and an outer surface that can contact the inner surface of the connecting member recess, and the outer surface of the bearing may be coated with a lubricating film so as to be able to slide with the inner surface of the connecting member recess.
[0014] The above bearing may be formed of the same material as the above connecting member.
[0015] The above-mentioned pivot scroll post may include a pivot scroll recess formed in the leading edge of the above-mentioned pivot scroll post.
[0016] The above connecting member includes a connecting member post received in the pivoting scroll recess, and the connecting member post can be penetrated by a drive pin connecting the drive shaft and the connecting member.
[0017] The drive pin includes an exposed end that penetrates the connecting member post and is exposed on the opposite side of the drive shaft relative to the connecting member, and the exposed end may be provided with a retainer that limits the connecting member from moving away from the drive shaft in the axial direction.
[0018] The above connecting member further includes a bottom surface capable of contacting the front end surface of the drive shaft, and the axial distance between the bottom surface of the connecting member and the front end surface of the connecting member post may be formed to be smaller than the axial distance between the front end surface of the drive shaft and the retainer.
[0019] The above-mentioned pivot scroll is formed to move axially according to the pressure of a back pressure chamber for pressing the pivot scroll toward the fixed scroll side, and the difference between the axial distance between the bottom surface of the connecting member and the front end surface of the connecting member post and the axial distance between the front end surface of the drive shaft and the retainer can be formed to be equal to the maximum axial travel distance of the pivot scroll.
[0020] The axial distance between the front end surface of the drive shaft and the front end surface of the exposed end of the drive pin can be formed to be smaller than the sum of the axial distance between the bottom surface of the connecting member and the base surface of the connecting member recess and the axial distance between the base surface of the pivoting scroll recess and the front end surface of the pivoting scroll post.
[0021] The axial distance between the base surface of the connecting member recess and the front surface of the connecting member post can be formed to be smaller than the axial distance between the base surface of the pivot scroll recess and the front surface of the pivot scroll post.
[0022] The outer diameter of the above-mentioned connecting member post can be formed to be smaller than the inner diameter of the above-mentioned pivoting scroll recess.
[0023] The above-mentioned pivot scroll may further include a pivot scroll groove that is engraved on the radially outer side of the pivot scroll post.
[0024] A portion of the outer surface of the above-mentioned pivot scroll post may form a portion of the above-mentioned pivot scroll groove.
[0025] The above connecting member includes a connecting member annular wall forming the inner surface of the connecting member recess, and the leading end of the connecting member annular wall and one end of the bearing opposite to the leading end of the connecting member annular wall can be received in the pivoting scroll groove.
[0026] The base surface of the above-mentioned pivot scroll groove and the base surface of the above-mentioned pivot scroll recess can be formed on the same plane.
[0027] A balance weight may be formed on the outer side of the above connecting member.
[0028] A scroll compressor according to the present invention comprises: a fixed scroll; a pivot scroll engaged with the fixed scroll; a drive shaft rotated by a drive source; a connecting member coupled to the drive shaft to pivot the pivot scroll; and a bearing interposed between the pivot scroll and the connecting member; wherein the pivot scroll includes a pivot scroll post protruding toward the connecting member, and the connecting member includes a connecting member recess that accommodates the pivot scroll post, thereby reducing weight and cost and improving durability.
[0029] FIG. 1 is a cross-sectional view illustrating a conventional scroll compressor,
[0030] FIG. 2 is an exploded perspective view illustrating the pivot scroll and the parts assembled thereto in the scroll compressor of FIG. 1.
[0031] FIG. 3 is a cross-sectional view illustrating a scroll compressor according to an embodiment of the present invention,
[0032] FIG. 4 is an enlarged cross-sectional view of section A of FIG. 3.
[0033] FIG. 5 is an exploded perspective view illustrating the parts of FIG. 4.
[0034] FIG. 6 is a perspective view showing the back side of the rotating scroll among the parts of FIG. 5.
[0035] Hereinafter, a scroll compressor according to the present invention will be described in detail with reference to the attached drawings.
[0036] FIG. 3 is a cross-sectional view illustrating a scroll compressor according to one embodiment of the present invention, FIG. 4 is an enlarged cross-sectional view of part A of FIG. 3, FIG. 5 is an exploded perspective view illustrating the parts of FIG. 4, and FIG. 6 is a perspective view illustrating the back side of a pivot scroll among the parts of FIG. 5.
[0037] Referring to FIGS. 3 to 6, a scroll compressor according to one embodiment of the present invention may include a casing (100), a fixed scroll (800) fixed to the casing (100), a pivot scroll (700) that engages with the fixed scroll (800) and forms a compression chamber, a drive shaft (300) that is rotated by a drive source (200), such as a motor, a connecting member (500) that is eccentrically coupled to the drive shaft (300) and pivots around the drive shaft (300) and pivots the pivot scroll (700), and a bearing (600) interposed between the pivot scroll (700) and the connecting member (500).
[0038] The above casing (100) includes a main frame (112) that supports the rotary scroll (700), and the main frame (112) may include a bearing hole (114) into which the drive shaft (300) is inserted, and a back pressure chamber (116) formed to communicate with the bearing hole (114) and providing a space in which the connecting member (500) can rotate, and receiving oil to press the rotary scroll (700) toward the fixed scroll (800).
[0039] The fixed scroll (800) may include a disc-shaped fixed scroll plate (810) and a fixed scroll wrap (820) protruding from the fixed scroll plate (810) toward the pivoting scroll (700).
[0040] The above-described rotary scroll (700) may include a disc-shaped rotary scroll plate (710), a rotary scroll wrap (720) that protrudes from the rotary scroll plate (710) toward the fixed scroll (800) and engages with the fixed scroll wrap (820), a cylindrical rotary scroll post (730) that protrudes from the rotary scroll plate (710) toward the opposite side of the rotary scroll wrap (720), a cylindrical rotary scroll recess (740) engraved in the center of the front end surface (734) of the rotary scroll post (730), and an annular rotary scroll groove (750) engraved along the radial outer side of the rotary scroll post (730).
[0041] Here, a portion of the outer surface of the pivot scroll post (730) may form a portion of the pivot scroll groove (750). That is, among the sides of the pivot scroll groove (750), the side with a smaller diameter (752) may be formed as one with the base side outer surface (732) of the outer surface of the pivot scroll post (730) adjacent to the pivot scroll plate (710).
[0042] And, the base surface (754) of the above-mentioned pivot scroll groove (750) and the base surface (744) of the above-mentioned pivot scroll recess (740) can be formed on the same plane.
[0043] The drive shaft (300) may be formed in a cylindrical shape extending from the drive source (200) toward the pivot scroll (700).
[0044] The above connecting member (500) is formed such that its bottom surface (hereinafter, bottom surface of the connecting member) (510) can contact the front end surface (310) of the drive shaft (300) and can be eccentrically positioned on the drive shaft (300).
[0045] Additionally, the connecting member (500) may be formed such that the upper surface (hereinafter, upper surface of the connecting member) (520), which forms the back surface of the lower surface (510) of the connecting member, engages with the pivot scroll post (730), the pivot scroll recess (740), and the pivot scroll groove (750). Specifically, the connecting member (500) may include a connecting member recess (522) that is cylindrically engraved at the center of the upper surface (520) of the connecting member and accommodates the pivot scroll post (730), a connecting member post (524) that protrudes cylindrically from the base surface (522b) of the connecting member recess (522) and is accommodated in the pivot scroll recess (740), and a connecting member annular wall (530) that forms the inner circumferential surface (522a) of the connecting member recess (522) and whose tip end is accommodated in the pivot scroll groove (750).
[0046] Meanwhile, in order to prevent damage to the rotating scroll (700) and the fixed scroll (800) due to liquid refrigerant compression, such as during initial operation, the rotation radius of the rotating scroll (700) needs to be formed to be variable, and taking this into consideration, the connecting member (500) can be formed to be capable of swinging movement with respect to the driving shaft (300) based on the drive pin (400) connecting the driving shaft (300) and the connecting member (500).
[0047] Specifically, the drive pin (400) is formed in a cylindrical shape extending in a direction parallel to the axial direction of the drive shaft (300), and the drive shaft (300) has a drive pin groove (312) into which one end of the drive pin (400) is inserted, and the connecting member (500) may have a drive pin hole (540) into which the other end of the drive pin (400) is inserted.
[0048] The drive pin groove (312) is formed on the front end surface (310) of the drive shaft (300), and the center of the drive pin groove (312) may be formed at a position spaced radially from the rotation axis of the drive shaft (300) so that the center axis of the drive pin (400) is positioned eccentrically with respect to the rotation axis of the drive shaft (300).
[0049] Here, in the case of the present embodiment, the drive pin groove (312) is formed in the drive shaft (300) and one end of the drive pin (400) is inserted into the drive pin groove (312), but is not limited thereto. That is, the drive shaft (300) and the drive pin (400) may be formed integrally.
[0050] The drive pin hole (540) may be formed such that the center of the drive pin hole (540) is spaced radially from the center axis of the connecting member (500) so that the center axis of the drive pin (400) is positioned eccentrically with respect to the center axis of the connecting member (500).
[0051] In addition, to prevent the connecting member (500) from moving away from the drive shaft (300) in the axial direction, the drive pin hole (540) is formed to penetrate the connecting member (500) in the axial direction from the bottom surface (510) of the connecting member to the front surface (524b) of the connecting member post (524), and the other end of the drive pin (400) is formed to penetrate the drive pin hole (540) and protrude to the opposite side of the drive shaft (300) relative to the connecting member (500). If the portion of the other end of the drive pin (400) that is exposed to the outside of the drive pin hole (540) is called the exposed end (422), a retainer (424) may be provided that is fixed to the exposed end (422) and limits the connecting member (500) from moving away from the drive shaft (300) in the axial direction.
[0052] Here, in order to prevent the drive pin (400) from colliding with the pivot scroll (700), it may be preferable that the axial distance between the front end surface (310) of the drive shaft (300) and the front end surface (422b) of the drive pin (400) on the exposed end (422) side is smaller than the sum of the axial distance between the bottom surface (510) of the connecting member and the base surface (522b) of the connecting member recess (522), and the axial distance between the base surface (744) of the pivot scroll recess (740) and the front end surface (734) of the pivot scroll post (730).
[0053] The bearing (600) is formed as a sliding bearing that supports the outer surface of the pivoting scroll post (730) and the inner surface (522a) of the connecting member recess (522), and one end of the bearing (600) facing the front end of the connecting member annular wall (530) can be received in the pivoting scroll groove (750).
[0054] Here, the bearing (600) is pressed into the outer surface of the pivoting scroll post (730) and formed to be in contact with the inner surface (522a) of the connecting member recess (522), and the outer surface of the bearing (600) may be coated with a lubricating film so as to be in contact with the inner surface (522a) of the connecting member recess (522). However, in terms of preventing deformation of the pivoting scroll (700) as described later and ease of additional processing of the bearing (600), it may be preferable for the bearing (600) to be pressed into the inner surface (522a) of the connecting member recess (522) and formed to be in contact with the outer surface of the pivoting scroll post (730), and for the inner surface of the bearing (600) to be coated with a lubricating film so as to be in contact with the outer surface of the pivoting scroll post (730). That is, the bearing (600) may preferably be formed as an annular plate having an outer surface that is pressed into the inner surface (522a) of the connecting member recess (522) and an inner surface that can contact the outer surface of the pivoting scroll post (730).
[0055] And, at this time, it may be more preferable for the bearing (600) to be formed of the same material as the connecting member (500) in terms of preventing the bearing (600) from coming off as described later.
[0056] Hereinafter, the effects of the scroll compressor according to the present embodiment will be explained.
[0057] The above scroll compressor can reduce weight and cost and improve durability as the bearing (600) is formed as a sliding bearing. Specifically, the radial thickness of the bearing (600) is smaller than the axial length, and the number of parts is reduced, so the weight and cost of the bearing (600) can be reduced. In addition, the centrifugal force of the rotating body is reduced during operation, so the lifespan of the bearing (600) can be increased.
[0058] And, as the bearing (600) is formed to support the space between the outer surface of the pivot scroll post (730) and the inner surface (522a) of the connecting member recess (522), the support area of the bearing (600) is increased within a range that reduces the weight and cost of the bearing (600), thereby distributing the load and further improving durability.
[0059] In addition, as the bearing (600) is pressed into the inner surface (522a) of the connecting member recess (522), the problem of the pivot scroll (700) being deformed during the pressing of the bearing (600) can be prevented.
[0060] Furthermore, as the bearing (600) is pressed into the inner circumferential surface (522a) of the connecting member recess (522), the bearing (600) can be further processed after pressing in the bearing (600) without worrying about deformation of the slewing scroll (700), thereby easily and inexpensively improving the roundness, surface roughness, precision, etc. of the bearing (600). In particular, if the bearing (600) is not further processed after pressing in, the bearing (600) must be formed from an expensive material that is less prone to deformation; however, if the bearing (600) is further processed after pressing in, there is no problem even if the bearing (600) is formed from an inexpensive material that is prone to deformation.
[0061] In addition, when the bearing (600) is pressed into the inner surface (522a) of the connecting member recess (522), if it is formed of the same material as the connecting member (500), the bearing (600) may be prevented from detaching from the connecting member (500) due to a difference in thermal expansion.
[0062] And, as the above-mentioned pivot scroll recess (740) is formed, a space for the connecting member post (524) to be formed can be secured. Accordingly, the connecting member (500) may include the connecting member post (524), and the contact area between the connecting member (500) and the drive pin (400) is increased by the connecting member post (524), thereby suppressing the tilting of the connecting member (500).
[0063] Here, since the bearing (600) is formed as a sliding bearing, it is important to suppress uneven wear of the bearing (600). As the tilting of the connecting member (500) is suppressed, the tilting of the bearing (600) pressed into the connecting member (500) is also suppressed, so that uneven wear of the bearing (600) can be suppressed.
[0064] Meanwhile, a balance weight (550) may be provided on the outer side of the connecting member (500) to balance rotation.
[0065] And, as the bearing (600) is formed as a sliding bearing, the friction surface lubrication of the bearing (600) is important. As the connecting member recess (522) and the pivot scroll recess (740) are formed, oil can be stored in the connecting member recess (522) and the pivot scroll recess (740), and the oil stored in the connecting member recess (522) and the pivot scroll recess (740) can be supplied to the friction surface of the bearing (600) through the gap between the connecting member (500) and the pivot scroll (700) to provide lubrication.
[0066] Here, oil may be supplied to the connecting member recess (522) and the rotating scroll recess (740) through the gap between the connecting member (500) and the rotating scroll (700) or through a separate passage.
[0067] Additionally, the axial distance between the front end surface (310) of the drive shaft (300) and the front end surface (422b) on the exposed end (422) side of the drive pin (400) is formed to be smaller than the sum of the axial distance between the bottom surface (510) of the connecting member and the base surface (522b) of the connecting member recess (522), and the axial distance between the base surface (744) of the pivot scroll recess (740) and the front end surface (734) of the pivot scroll post (730). As the front end surface (422b) on the exposed end (422) side of the drive pin (400) is separated from the base surface (744) of the pivot scroll recess (740), the oil storage volume within the pivot scroll recess (740) can be increased. Accordingly, oil can be stably supplied to the friction surface of the bearing (600).
[0068] Additionally, the axial distance between the base surface (522b) of the connecting member recess (522) and the front surface (524b) of the connecting member post (524) is formed to be smaller than the axial distance between the base surface (744) of the pivoting scroll recess (740) and the front surface (734) of the pivoting scroll post (730), so that the front surface (524b) of the connecting member post (524) is spaced apart from the base surface (744) of the pivoting scroll recess (740), thereby increasing the oil storage capacity within the pivoting scroll recess (740).
[0069] And, the axial distance between the bottom surface of the connecting member (500) and the front surface (524b) of the connecting member post (524) is formed to be smaller than the axial distance between the front surface (310) of the drive shaft (300) and the retainer (424), so that the front surface (524b) of the connecting member post (524) is further separated from the base surface (744) of the pivot scroll recess (740) than the front surface (422b) of the exposed end (422) of the drive pin (400), thereby increasing the oil storage capacity within the pivot scroll recess (740).
[0070] And, as the outer diameter of the connecting member post (524) is formed to be smaller than the inner diameter of the pivot scroll recess (740), the oil storage capacity within the pivot scroll recess (740) can be further increased.
[0071] In addition, the connecting member recess (522) and the pivot scroll recess (740) each reduce the weight of the connecting member (500) and the weight of the pivot scroll (700), thereby reducing the inertia of the rotating body and improving durability.
[0072] And, as the above-mentioned pivot scroll groove (750) is formed, the weight of the pivot scroll (700) can be further reduced.
[0073] And, as a portion of the outer surface of the above-mentioned pivot scroll post (730) forms a portion of the above-mentioned pivot scroll groove (750), and as the leading end of the connecting member annular wall (530) and the end of the bearing (600) facing the leading end of the connecting member annular wall (530) are received in the above-mentioned pivot scroll groove (750), the contact area between the bearing (600) and the pivot scroll (700) is increased, and the axial length of the assembly of the connecting member (500), the bearing (600), and the pivot scroll (700) can be reduced. Accordingly, tilting of the above-mentioned pivot scroll (700) can be suppressed.
[0074] Here, in order to increase the volume of the rotary scroll recess (740), decrease the weight of the rotary scroll (700), increase the low flow rate of the rotary scroll recess (740), increase the contact area between the connecting member (500) and the drive pin (400), increase the contact area between the bearing (600) and the rotary scroll (700), etc., it may be preferable for the base surface (754) of the rotary scroll groove (750) and the base surface (744) of the rotary scroll recess (740) to be formed on the same plane.
[0075] Meanwhile, as in the present embodiment, if the retainer (424) is formed so that the connecting member (500) does not move away from the drive shaft (300) in the axial direction at all, the detachment of the connecting member (500) can be suppressed, and collision noise caused by the axial movement of the connecting member (500) can be suppressed. However, in this case, the axial movement of the pivot scroll (700) may be hindered. That is, when the pivot scroll (700) moves in the axial direction according to the pressure of the back pressure chamber (116), it must slide against the connecting member (500), but the pivot scroll (700) may not slide smoothly against the connecting member (500) due to the radial force acting between the pivot scroll (700) and the connecting member (500).
[0076] On the other hand, if the retainer (424) is formed so that the connecting member (500) can move away from the driving shaft (300) in the axial direction but not beyond a predetermined distance, the connecting member (500) can move axially together with the pivot scroll (700) within a range where detachment is suppressed, so that although some collision noise may occur due to the axial movement of the connecting member (500), the axial movement of the pivot scroll (700) may not be hindered.
[0077] Accordingly, it may be preferable for the retainer (424) to be formed such that the connecting member (500) can move axially away from the drive shaft (300) but not beyond a predetermined distance, rather than being formed such that the connecting member (500) does not move away at all axially from the drive shaft (300). That is, although not separately illustrated, it may be preferable for the axial distance between the bottom surface (510) of the connecting member and the front surface (524b) of the connecting member post (524) to be smaller than the axial distance between the front surface (310) of the drive shaft (300) and the retainer (424).
[0078] At this time, in order to suppress the detachment of the connecting member (500) within a range where the axial movement of the rotating scroll (700) is not hindered, it may be more preferable that the difference between the axial distance between the bottom surface (510) of the connecting member and the front surface (524b) of the connecting member post (524) and the axial distance between the front surface (310) of the driving shaft (300) and the retainer (424) be formed to be equal to the maximum axial movement distance of the rotating scroll (700).
Claims
1. Fixed scroll; A pivot scroll engaged with the above fixed scroll; A drive shaft rotated by a driving source; A connecting member coupled to the drive shaft and causing the pivoting scroll to pivot; and A bearing interposed between the above-mentioned pivot scroll and the above-mentioned connecting member; comprising The above-mentioned pivot scroll includes a pivot scroll post protruding toward the connecting member, and The above connecting member is a scroll compressor comprising a connecting member recess that accommodates the above pivoting scroll post.
2. In Paragraph 1, A scroll compressor in which the bearing is formed as a sliding bearing that supports between the outer surface of the slewing scroll post and the inner surface of the connecting member recess.
3. In Paragraph 1, The above bearing includes an outer surface that is pressed into the inner surface of the connecting member recess and an inner surface that can contact the outer surface of the pivoting scroll post, and A scroll compressor in which the inner surface of the bearing is coated with a lubricating film so as to slide with the outer surface of the slewing scroll post.
4. In Paragraph 1, The above bearing includes an inner surface that is pressed into the outer surface of the slewing scroll post and an outer surface that can contact the inner surface of the connecting member recess. A scroll compressor in which the outer surface of the bearing is coated with a lubricating film so as to slide with the inner surface of the connecting member recess.
5. In Paragraph 1, The above bearing is a scroll compressor formed of the same material as the above connecting member.
6. In Paragraph 1, The above-mentioned pivot scroll post is a scroll compressor comprising a pivot scroll recess formed in the leading edge of the above-mentioned pivot scroll post.
7. In Paragraph 6, The above connecting member includes a connecting member post received in the above pivoting scroll recess, and The above-mentioned connecting member post is a scroll compressor that is penetrated by a drive pin connecting the drive shaft and the connecting member.
8. In Paragraph 7, The drive pin includes an exposed end that penetrates the connecting member post and is exposed on the opposite side of the drive shaft relative to the connecting member, and A scroll compressor having a retainer at the exposed end that limits the connecting member from moving axially away from the drive shaft.
9. In Paragraph 8, The above connecting member further includes a bottom surface capable of contacting the front end surface of the drive shaft, and A scroll compressor in which the axial distance between the bottom surface of the connecting member and the front surface of the connecting member post is formed to be smaller than the axial distance between the front surface of the drive shaft and the retainer.
10. In Paragraph 9, The above-mentioned pivot scroll is formed to move axially according to the pressure of a back pressure chamber for pressing the pivot scroll toward the fixed scroll side, and A scroll compressor in which the difference between the axial distance between the bottom surface of the connecting member and the front surface of the connecting member post and the axial distance between the front surface of the drive shaft and the retainer is formed to be equal to the maximum axial travel distance of the pivot scroll.
11. In Paragraph 9, A scroll compressor in which the axial distance between the front end surface of the drive shaft and the front end surface of the exposed end of the drive pin is formed to be smaller than the sum of the axial distance between the bottom surface of the connecting member and the base surface of the connecting member recess and the axial distance between the base surface of the pivot scroll recess and the front end surface of the pivot scroll post.
12. In Paragraph 7, A scroll compressor in which the axial distance between the base surface of the connecting member recess and the front surface of the connecting member post is formed to be smaller than the axial distance between the base surface of the pivot scroll recess and the front surface of the pivot scroll post.
13. In Paragraph 7, A scroll compressor in which the outer diameter of the above-mentioned connecting member post is formed to be smaller than the inner diameter of the above-mentioned pivotal scroll recess.
14. In Paragraph 1, The above-mentioned pivot scroll is a scroll compressor that further includes a pivot scroll groove formed on the radially outer side of the above-mentioned pivot scroll post.
15. In Paragraph 14, A scroll compressor in which a portion of the outer surface of the above-mentioned pivot scroll post forms a portion of the above-mentioned pivot scroll groove.
16. In Paragraph 15, The above connecting member includes a connecting member annular wall forming the inner surface of the above connecting member recess, and A scroll compressor in which the leading end of the connecting member annular wall and one end of the bearing opposite to the leading end of the connecting member annular wall are received in the pivoting scroll groove.
17. In Paragraph 14, A scroll compressor in which the base surface of the above-mentioned pivot scroll groove and the base surface of the above-mentioned pivot scroll recess are formed on the same plane.
18. In Paragraph 1, A scroll compressor having a balance weight formed on the outer side of the above-mentioned connecting member.