JP2006242195A - Scroll fluid machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a scroll fluid machine in which loss is reduced, particularly resulting from a mechanism for restricting the rotation of a movable scroll. <P>SOLUTION: A fixed scroll 60 has a columnar pin shaft portion 70. On the other hand, the movable scroll 50 has a sliding groove 80 extending to the radial direction. The pin shaft portion 70 of the fixed scroll 60 is fitted into the sliding groove 80 of the movable scroll 50. During the revolution of the movable scroll 50, the pin shaft portion 70 slides on the side face of the sliding groove 80 to restrict the rotation of the movable scroll 50. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a scroll type fluid machine, and more particularly to a mechanism for limiting the rotation of a movable scroll.

  Conventionally, scroll type fluid machines have been widely used as compressors and the like provided in air conditioners. In the scroll type fluid machine, a spiral wrap is provided on each of the fixed scroll and the movable scroll, and the fixed side and the movable side wrap are engaged with each other to form a fluid chamber. In this scroll type fluid machine, the movable scroll performs a revolving motion, and the volume of the fluid chamber changes accordingly. For example, a scroll type fluid machine that constitutes a compressor reduces the volume of a closed fluid chamber, thereby compressing the fluid in the fluid chamber.

  In the scroll type fluid machine, it is necessary to limit the rotation of the movable scroll. As a mechanism for limiting the rotation of the movable scroll, for example, an Oldham ring mechanism is widely adopted as disclosed in Patent Document 1.

Specifically, in a scroll type fluid machine employing an Oldham ring mechanism, a movable scroll is placed on a housing via an Oldham ring (Oldham joint). The housing is fixed together with a fixed scroll. The Oldham ring has two pairs of keys. That is, the Oldham ring is provided with a total of four keys. In this Oldham ring, two keys engage with a key groove formed in the housing, and the remaining two keys engage with a key groove formed on the movable scroll. Then, each key of the Oldham ring slides along the key groove, thereby restricting the rotation of the movable scroll.
JP 2004-19545 A

  As described above, the Oldham ring is provided with four keys, and these four keys are respectively engaged with the corresponding key grooves. During the revolution of the movable scroll, these four keys slide while being pressed against the side walls of the keyway. That is, each key of the Oldham ring slides on the movable scroll or the housing in which the key groove is formed. For this reason, when the Oldham ring mechanism is adopted to limit the rotation of the movable scroll, the four keys of the Oldham ring slide with the movable scroll and the housing, and the sliding loss becomes relatively large. There was a problem.

  Also, the size of the Oldham ring is often slightly smaller than the movable scroll. Then, during operation of the scroll type fluid machine, such a relatively large Oldham ring moves along with the revolution of the movable scroll. For this reason, when lubricating oil has accumulated around the Oldham ring, there is a possibility that a loss due to the Oldham ring stirring the lubricating oil becomes relatively large.

  This invention is made | formed in view of this point, The objective is to reduce the loss resulting from the reduction | restoration in a scroll type fluid machine, especially the mechanism for restrict | limiting the rotation of a movable scroll.

  The first and second inventions comprise a orbiting scroll (50), a rotating shaft (20) engaged with the orbiting scroll (50), and a non-orbiting member (69) comprising at least a non-orbiting scroll (60). And a scroll type fluid machine in which the orbiting scroll (50) revolves around the axis of the rotating shaft (20).

  The first invention includes a pin shaft portion (70) attached to the non-rotating member (69), and a distance from the axis of the pin shaft portion (70) to the shaft center of the rotating shaft (20). Is set longer than the revolution radius of the orbiting scroll (50), while the orbiting scroll (50) is formed with a slide groove (80) that engages with the pin shaft portion (70). The rotation of the orbiting scroll (50) is restricted by the sliding of the wall surface of the slide groove (80) and the pin shaft portion (70) during the revolution of the scroll (50).

  In addition, the second invention includes a pin shaft portion (70) attached to the orbiting scroll (50), and the shaft center of the pin shaft portion (70) to the shaft center of the eccentric portion (22, 23). While the distance is set longer than the revolution radius of the orbiting scroll (50), the non-orbiting member (69) has a slide groove (80) that engages with the pin shaft portion (70), The rotation of the orbiting scroll (50) is restricted by sliding of the wall surface of the slide groove (80) and the pin shaft portion (70) during the revolution of the orbiting scroll (50).

  The third and fourth inventions provide a housing member (50), a non-orbiting scroll (60), a rotating shaft (20), and a bearing (48) that supports the rotating shaft (20). 45), and the rotary shaft (20) is formed with an eccentric portion (22, 23) that is eccentric with respect to the rotary shaft, and the orbiting scroll (50) that engages with the eccentric portion (22, 23). ) Is a scroll type fluid machine that revolves around the rotation axis of the rotary shaft (20).

  In the third invention, the non-orbiting scroll (60) and the housing member (45) constitute a non-orbiting member (69), and the non-orbiting scroll (60) constituting the non-orbiting member (69). And a pin shaft portion (70) attached to one or both of the housing member (45), and the distance from the shaft center of the pin shaft portion (70) to the shaft center of the rotary shaft (20) is the orbiting scroll ( 50) is set to be longer than the revolution radius of the orbiting scroll (50), and the orbiting scroll (50) is formed with a slide groove (80) that engages with the pin shaft portion (70). The rotation of the orbiting scroll (50) is restricted by the sliding of the wall surface of the slide groove (80) and the pin shaft portion (70) during revolution.

  In the fourth aspect of the invention, the non-orbiting scroll (60) and the housing member (45) constitute a non-orbiting member (69), and the pin shaft portion (70) attached to the orbiting scroll (50) is provided. A distance from the axial center of the pin shaft portion (70) to the axial center of the eccentric portion (22, 23) is set longer than the revolution radius of the orbiting scroll (50), 69) A slide groove (80) that engages with the pin shaft portion (70) is formed in one or both of the non-orbiting scroll (60) and the housing member (45) constituting the orbiting scroll (50). ), The rotation of the orbiting scroll (50) is restricted by the sliding of the wall surface of the slide groove (80) and the pin shaft portion (70).

  In a fifth aspect based on the first or third aspect, the slide groove (80) is formed in a straight line, and the center line of the slide groove (80) is the pin shaft portion (70). And the axis of the eccentric portion (22, 23) are orthogonal to each other.

  In a sixth aspect based on the first or third aspect, the slide groove (80) is formed in a straight line, and the center line of the slide groove (80) is the pin shaft portion (70). The angle formed by the straight line perpendicular to both the axis of the axis and the axis of the eccentric portion (22, 23) is an acute angle.

  In a seventh aspect based on the second or fourth aspect, the slide groove (80) is formed linearly, and the center line of the slide groove (80) is the axis of the pin shaft portion (70). It is orthogonal to both the center and the axis of the rotating shaft (20).

  In an eighth aspect based on the second or fourth aspect, the slide groove (80) is formed in a straight line, and the center line of the slide groove (80) is the axis of the pin shaft portion (70). The angle formed by the straight line perpendicular to both the center and the axis of the rotating shaft (20) is an acute angle.

  A ninth invention includes a housing member (45) provided with a bearing (48) for supporting the rotating shaft (20) in the first invention, and the housing member (45) is provided with the non-orbiting scroll ( The pin shaft portion (70) is attached to one or both of the housing member (45) and the non-orbiting scroll (60).

  In a tenth aspect based on the first or third aspect, the orbiting scroll (50) is erected on the orbiting end plate portion (51) formed in a flat plate shape and the orbiting end plate portion (51). A spiral wrap (52) is provided, and the slide groove (80) is a concave groove opened on the surface of the swivel end plate portion (51).

  In an eleventh aspect based on the first or third aspect, the orbiting scroll (50) is erected on the orbiting end plate portion (51) formed in a flat plate shape and the orbiting end plate portion (51). A spiral wrap (52) is provided, and the slide groove (80) is a groove that penetrates the swivel end plate (51) in the thickness direction.

  In a twelfth aspect according to the second aspect, a housing member (45) provided with a bearing (48) for supporting the rotating shaft (20) is provided, and the housing member (45) is provided with the non-orbiting scroll ( 60) constitutes the non-orbiting member (69), while the slide groove (80) is formed in either the housing member (45) or the non-orbiting scroll (60).

  A thirteenth aspect of the invention includes the housing member (45) provided with a bearing (48) for supporting the rotating shaft (20) in the second aspect of the invention, and the housing member (45) is the non-orbiting scroll ( 60) constitutes the non-orbiting member (69), while the slide groove (80) is formed in each of the housing member (45) and the non-orbiting scroll (60).

  In a fourteenth aspect based on the first or third aspect, the pin shaft portion (70) is formed in a column shape and is fixed to the non-rotating member (69), and the pin shaft portion (70) The sliding surface (95) with the wall surface of the sliding groove (80) is an arc surface.

  In a fifteenth aspect based on the fourteenth aspect, the pin shaft portion (70) has a portion closer to the rotary shaft (20) than a sliding surface (95) with the wall surface of the slide groove (80). It has a cut-out shape.

  In a sixteenth aspect based on the fifteenth aspect, the orbiting scroll (50) includes a revolving end plate portion (51) formed in a flat plate shape, and a spiral shape provided upright on the revolving end plate portion (51). A swing wrap (52), and the slide groove (80) is a groove that penetrates the swing end plate portion (51) in the thickness direction, and the swing wrap (52) of the slide groove (80). The distance from the end on the side to the outer surface on the side of the orbiting wrap (52) is longer than twice the revolution radius of the orbiting wrap (52).

  In a seventeenth aspect based on the fifteenth aspect, the pin shaft portion (70) is fixed to a non-orbiting scroll (60) as a non-orbiting member (69), and the orbiting scroll (50) has a flat plate shape. The swivel mirror plate portion (51) formed on the swivel mirror plate portion (51) and a spiral swivel wrap (52) standing on the swivel mirror plate portion (51), and the slide groove (80) includes the swivel mirror plate portion (51 ) Of the swing wrap (52) side surface of the slide groove (80) from the end of the slide wrap (52) side to the outer surface of the swing wrap (52) side The distance is longer than twice the revolution radius of the orbiting wrap (52).

  In an eighteenth aspect based on the second or fourth aspect, the pin shaft portion (70) is formed in a columnar shape and is fixed to the orbiting scroll (50), and the pin shaft portion (70) The sliding surface (95) with the wall surface of the slide groove (80) is an arc surface.

  In a nineteenth aspect based on the eighteenth aspect, the pin shaft portion (70) has a portion closer to the rotary shaft (20) than a sliding surface (95) with the wall surface of the slide groove (80). It has a cut-out shape.

  In a twentieth aspect according to the first or third aspect, the pin shaft portion (70) is rotatably attached to the non-rotating member (69).

  In a twenty-first aspect, in the second or fourth aspect, the pin shaft portion (70) is rotatably attached to the orbiting scroll (50).

  In a twenty-second aspect based on the twentieth or twenty-first aspect, the pin shaft portion (70) is formed with a flat sliding surface (72) that slides on the wall surface of the sliding groove (80). Is.

  According to a twenty-third aspect of the present invention, in the first, second, third or fourth aspect of the invention, the pin shaft portion (70) includes a columnar body member (73) and the body member (73). The bush member (74) which is attached and slides on the wall surface of the slide groove (80) is configured.

  In a twenty-fourth aspect based on the first or third aspect, the pin shaft portion (70) is attached to the main body member (73) formed in a column shape and the main body member (73), and the slide groove The body member (73) is fixed to the non-rotating member (69), and the bush member (74) is connected to the body member (80). 73) can be attached to the machine in a rotatable manner.

  In a twenty-fifth aspect based on the second or fourth aspect, the pin shaft portion (70) is attached to the main body member (73) formed in a column shape and the main body member (73), and the slide groove The body member (73) is fixed to the orbiting scroll (50), and the bush member (74) is fixed to the body member (73). ) To be freely rotatable.

  In a twenty-sixth aspect based on the first or third aspect, the pin shaft portion (70) is attached to the main body member (73) formed in a column shape and the main body member (73), and the slide groove (80) and a bush member (74) that slides, the main body member (73) is rotatably attached to the non-rotating member (69), and the bush member (74) is It is fixed to the main body member (73).

  In a twenty-seventh aspect based on the second or fourth aspect, the pin shaft portion (70) is attached to the main body member (73) formed in a column shape and the main body member (73), and the slide groove (80) and a bush member (74) that slides, the body member (73) is rotatably attached to the orbiting scroll (50), and the bush member (74) is the body. It is fixed to the member (73).

  In a twenty-eighth aspect of the invention according to the twenty-fourth, twenty-fifth, twenty-sixth or twenty-seventh aspect, the bush member (74) has a flat sliding surface (sliding with the wall surface of the sliding groove (80)). 75) is formed.

  In a twenty-ninth aspect based on the first or third aspect, the orbiting scroll (50) is erected on the orbiting end plate portion (51) formed in a flat plate shape and the orbiting end plate portion (51). A spiral swirl wrap (52), and the slide groove (80) is formed in the swivel end plate (51) in the vicinity of the outer peripheral end of the swirl wrap (52). .

  In a thirtieth aspect based on the first or third aspect, the orbiting scroll (50) is erected on the orbiting end plate portion (51) formed in a flat plate shape and the orbiting end plate portion (51). And the swirl end plate portion (51) further from the outer peripheral side end of the swirl wrap (52) along the extending direction of the swirl wrap (52). The slide groove (80) is formed at the advanced position.

  In a thirty-first aspect according to the second or fourth aspect, the orbiting scroll (50) is erected on the orbiting end plate portion (51) formed in a flat plate shape and the orbiting end plate portion (51). The pin shaft portion (70) is disposed in the vicinity of the outer peripheral side end portion of the swivel wrap (52) in the swivel end plate portion (51).

  In a thirty-second invention according to the second or fourth invention, the orbiting scroll (50) is erected on the orbiting mirror plate portion (51) formed in a flat plate shape and the orbiting mirror plate portion (51). And the swirl end plate portion (51) further from the outer peripheral side end of the swirl wrap (52) along the extending direction of the swirl wrap (52). The pin shaft portion (70) is provided at the advanced position.

  According to a thirty-third aspect, in the first, second, third or fourth aspect, the spiral orbiting wrap (52) provided in the orbiting scroll (50) has a constant thickness. The spiral non-orbiting wrap (63) provided in the non-orbiting scroll (60) has a thickness that repeatedly increases and decreases gradually from the inner peripheral end to the outer peripheral end.

  In a thirty-fourth aspect of the invention according to the first, second, third or fourth aspect of the invention, the spiral orbiting wrap (52) provided in the orbiting scroll (50) has an inner peripheral end portion. The spiral non-orbiting wrap (63) provided on the non-orbiting scroll (60) has a constant thickness.

  According to a thirty-fifth aspect of the present invention, in the first, second, third, or fourth aspect, the spiral orbiting wrap (52) provided in the orbiting scroll (50) has an inner peripheral side end portion. The spiral non-orbiting wrap (63) provided on the non-orbiting scroll (60) has a thickness gradually increasing from the inner peripheral end to the outer peripheral end. It gradually repeats increasing and decreasing toward.

  According to a thirty-sixth aspect of the present invention, in the first, second, third, or fourth aspect, the non-orbiting scroll (60) includes a spiral non-orbiting wrap (63), and the orbiting scroll (50) includes A spiral swirl wrap (52) is provided, and the outer peripheral end of the non-revolving wrap (63) extends to the vicinity of the outer peripheral end of the swirl wrap (52). .

  The thirty-seventh and thirty-eighth inventions are a fixed-side member comprising a movable scroll (50), a crank (20) with an eccentric pin (22) engaged with the movable scroll (50), and at least a fixed scroll (60). (69), and the movable scroll (50) is intended for a scroll fluid machine that revolves around the axis of the crank (20).

  A thirty-seventh aspect of the invention includes a pin shaft portion (70) attached to the fixed-side member (69), and a distance from an axis of the pin shaft (70) to an axis of the crank (20) is The movable scroll (50) is set to be longer than the revolution radius of the movable scroll (50), and the movable scroll (50) is formed with a slide groove (80) that engages with the pin shaft portion (70). The rotation of the movable scroll (50) is restricted by the sliding of the wall surface of the slide groove (80) and the pin shaft portion (70) during the revolution of (50).

  The thirty-eighth aspect includes a pin shaft portion (70) attached to the movable scroll (50), and a distance from the axis of the pin shaft portion (70) to the shaft center of the eccentric pin (22). While the revolving radius of the movable scroll (50) is set longer, the stationary member (69) is formed with a slide groove (80) that engages with the pin shaft portion (70). The rotation of the movable scroll (50) is restricted by sliding of the wall surface of the slide groove (80) and the pin shaft portion (70) during the revolution of the scroll (50).

  In a thirty-ninth aspect based on the thirty-seventh aspect, the slide groove (80) is formed in a straight line, and the center line of the slide groove (80) is the axis of the pin shaft portion (70). And perpendicular to both the axial centers of the eccentric pins (22).

  In a fortieth aspect based on the thirty-seventh aspect, the slide groove (80) is formed in a straight line, and the center line of the slide groove (80) is the axis of the pin shaft portion (70). And an angle formed by a straight line perpendicular to both the axial centers of the eccentric pins (22) is an acute angle.

  In a forty-first aspect according to the thirty-eighth aspect, the slide groove (80) is formed in a straight line, and the center line of the slide groove (80) is aligned with the axis of the pin shaft portion (70) and the crank. (20) It is orthogonal to both axes.

  In a forty-second aspect according to the thirty-eighth aspect, the slide groove (80) is formed in a straight line, and the center line of the slide groove (80) is aligned with the axis of the pin shaft portion (70) and the crank. The angle formed by the straight line perpendicular to both the axes of (20) is an acute angle.

  In a forty-third aspect of the invention, in the thirty-seventh aspect of the invention, a housing member (45) provided with a bearing (48) for supporting the crank (20) is provided, and the housing member (45) is the fixed scroll (60). The pin shaft portion (70) is attached to one or both of the housing member (45) and the fixed scroll (60) while constituting the fixed side member (69).

  In a forty-fourth aspect based on the thirty-seventh aspect, the movable scroll (50) includes a movable side end plate part (51) formed in a flat plate shape, and a spiral provided upright on the movable side end plate part (51). And the slide groove (80) is a concave groove that opens on the surface of the movable side end plate part (51).

  In a forty-fifth aspect based on the thirty-seventh aspect, the movable scroll (50) includes a movable side end plate part (51) formed in a flat plate shape and a spiral provided upright on the movable side end plate part (51). And the slide groove (80) is a groove that penetrates the movable side end plate portion (51) in the thickness direction.

  A forty-sixth aspect of the invention is that in the thirty-eighth aspect of the invention, a housing member (45) provided with a bearing (48) for supporting the crank (20) is provided, and the housing member (45) is the fixed scroll (60). In addition, the fixed side member (69) and the slide groove (80) are formed on either the housing member (45) or the fixed scroll (60).

  A forty-seventh aspect of the invention is that in the thirty-eighth aspect of the invention, a housing member (45) provided with a bearing (48) for supporting the crank (20) is provided, and the housing member (45) is the fixed scroll (60). The fixed side member (69) is configured together with the slide groove (80) formed in each of the housing member (45) and the fixed scroll (60).

  In a forty-eighth aspect based on the thirty-seventh aspect, the pin shaft portion (70) is formed in a columnar shape and is fixed to the fixed side member (69).

  In a forty-ninth aspect based on the thirty-eighth aspect, the pin shaft portion (70) is formed in a columnar shape and is fixed to the movable scroll (50).

  In a fifty-th invention according to the thirty-seventh invention, the pin shaft portion (70) is rotatably attached to the fixed-side member (69).

  In a fifty-first aspect, in the thirty-eighth aspect, the pin shaft portion (70) is rotatably attached to the movable scroll (50).

  In a fifty-second invention according to the fifty-first or fifty-first invention, the pin shaft portion (70) is formed with a flat sliding surface (72) that slides on the wall surface of the slide groove (80). Is.

  In a thirty-third aspect according to the thirty-seventh or thirty-eighth aspect, the pin shaft portion (70) is attached to the main body member (73) formed in a column shape and the main body member (73), and the slide groove (80) and the bush member (74) which slides.

  In a fifty-fourth aspect based on the thirty-seventh aspect, the pin shaft portion (70) includes a columnar body member (73) and the body member (73) attached to the slide groove (80). The body member (73) is fixed to the stationary member (69), and the bush member (74) is attached to the body member (73). On the other hand, it can be freely rotated.

  In a thirty-fifth aspect based on the thirty-eighth aspect, the pin shaft portion (70) includes a columnar body member (73) and the body member (73) attached to the slide groove (80). The body member (73) is fixed to the movable scroll (50), and the bush member (74) is fixed to the body member (73). It can be rotated freely.

  According to a fifty-sixth aspect, in the thirty-seventh aspect, the pin shaft portion (70) includes a columnar body member (73) and the body member (73) attached to the slide groove (80). The body member (73) is rotatably attached to the fixed side member (69), and the bush member (74) is connected to the body member (74). 73).

  According to a 57th aspect, in the 38th aspect, the pin shaft portion (70) includes a columnar body member (73) and the body member (73) attached to the slide groove (80). The body member (73) is rotatably attached to the movable scroll (50), and the bush member (74) is attached to the body member (73). ).

  According to a 58th aspect of the present invention, in the 54th, 55th, 56th or 57th aspect of the present invention, the bush member (74) has a planar sliding surface that slides on the wall surface of the slide groove (80). 75) is formed.

  In a fifty-ninth aspect based on the thirty-seventh aspect, the movable scroll (50) includes a movable side end plate part (51) formed in a flat plate shape and a spiral provided upright on the movable side end plate part (51). And the slide groove (80) is formed in the vicinity of the outer peripheral end of the movable side wrap (52) in the movable side end plate (51). It is.

  In a sixtyth aspect based on the thirty-eighth aspect, the movable scroll (50) includes a movable side end plate portion (51) formed in a flat plate shape, and a spiral standing on the movable side end plate portion (51). And the pin shaft portion (70) is disposed in the vicinity of the outer peripheral side end portion of the movable side wrap (52) in the movable side end plate portion (51). is there.

  In a sixty-first aspect according to the thirty-seventh or thirty-eighth aspect, the spiral movable side wrap (52) provided in the movable scroll (50) has a constant thickness, and the fixed scroll ( The spiral fixed side wrap (63) provided in 60) has a thickness that repeatedly increases and decreases gradually from the inner peripheral side end to the outer peripheral side end.

  In a thirty-sixth aspect according to the thirty-seventh or thirty-eighth aspect, the spiral movable side wrap (52) provided in the movable scroll (50) has a thickness from an inner peripheral side end to an outer peripheral side end. The spiral fixed side wrap (63) provided on the fixed scroll (60) has a constant thickness.

  In a thirty-sixth aspect according to the thirty-seventh or thirty-eighth aspect, the spiral movable side wrap (52) provided in the movable scroll (50) has a thickness from an inner peripheral side end to an outer peripheral side end. The spiral fixed side wrap (63) provided on the fixed scroll (60) gradually increases or decreases toward the outer peripheral side end from the inner peripheral side end. It is a repetition.

  In a sixty-fourth aspect based on the thirty-seventh or thirty-eighth aspect, the fixed scroll (60) has a spiral fixed side wrap (63), and the movable scroll (50) has a spiral movable side wrap ( 52) are provided, and the outer peripheral side end portion of the fixed side wrap (63) is extended to the vicinity of the outer peripheral side end portion of the movable side wrap (52).

-Action-
In the first to fourth inventions, the orbiting scroll (50) is engaged with the rotating shaft (20). When the rotating shaft (20) rotates, the orbiting scroll (50) revolves around the axis of the rotating shaft (20). The revolution radius of the orbiting scroll (50) is the amount of eccentricity of the eccentric part (22,23) in the rotating shaft (20), that is, the distance between the axis of the rotating shaft (20) and the axis of the eccentric part (22,23). Is equal to

  In the scroll fluid machine (10) of each of the first and second inventions, at least the non-orbiting scroll (60) is provided as the non-orbiting member (69). In this scroll type fluid machine (10), other members may be provided as the non-orbiting member (69) together with the non-orbiting scroll (60). Further, in the scroll type fluid machine (10) of each of the third and fourth inventions, the non-orbiting scroll (60) and the housing member (45) are provided as the non-orbiting member (69).

  In the first invention, the non-revolving member (69) is provided with the pin shaft portion (70), and the slide groove (80) engaged with the pin shaft portion (70) is formed in the orbiting scroll (50). . In the third aspect of the invention, the pin shaft portion (70) is provided on one or both of the non-orbiting scroll (60) and the housing member (45) constituting the non-orbiting member (69). A slide groove (80) that engages with 70) is formed in the orbiting scroll (50).

  In the non-orbiting member (69) of each of the first and third inventions, the pin shaft portion (70) has a distance from the axial center to the axial center of the rotating shaft (20) of the orbiting scroll (50). It is arranged to be longer than the revolution radius. For this reason, the orbiting scroll (50) revolves with the slide groove (80) formed therein engaged with the pin shaft portion (70). During the revolution of the orbiting scroll (50), the side surface of the slide groove (80) slides with the pin shaft portion (70), and the orbiting scroll (50) formed with the slide groove (80) is moved to the pin shaft portion (70). ) Then, the pin shaft portion (70) engaged with the slide groove (80) guides the orbiting scroll (50), thereby limiting the rotation of the orbiting scroll (50). However, in these inventions, the rotation of the orbiting scroll (50) is not completely prohibited, and a certain amount of rotation of the orbiting scroll (50) is allowed.

  In the second invention, the orbiting scroll (50) is provided with the pin shaft portion (70), and the slide groove (80) that engages with the pin shaft portion (70) is formed in the non-orbiting member (69). . In the fourth invention, the orbiting scroll (50) is provided with the pin shaft portion (70), and the slide groove (80) engaged with the pin shaft portion (70) constitutes the non-orbiting member (69). Formed on one or both of the non-orbiting scroll (60) and the housing member (45).

  In the orbiting scroll (50) of each of the second and fourth inventions, the pin shaft portion (70) has a distance from the axis to the axis of the eccentric portion (22, 23). It is arranged to be longer than the revolution radius. For this reason, the orbiting scroll (50) revolves in a state where the pin shaft portion (70) provided therein is engaged with the slide groove (80). During the revolution of the orbiting scroll (50), the side surface of the slide groove (80) slides on the pin shaft portion (70), and the pin shaft portion (70) provided on the orbiting scroll (50) moves to the slide groove (80 ) The rotation of the orbiting scroll (50) is restricted by the orbiting scroll (50) including the pin shaft portion (70) being guided by the slide groove (80). However, in this invention, the rotation of the orbiting scroll (50) is not completely prohibited, and a certain amount of rotation of the orbiting scroll (50) is allowed.

  In the fifth and sixth inventions, the slide groove (80) formed in the orbiting scroll (50) is linear. The side surface of the slide groove (80) is flat, and the side surface of the slide groove (80) slides with the pin shaft portion (70).

  In the fifth aspect of the invention, the center line of the slide groove (80) is orthogonal to both the axis of the pin shaft portion (70) and the axis of the eccentric portion (22, 23). That is, in the present invention, the angle formed by the straight line perpendicular to the axis of the pin shaft portion (70) and the eccentric portion (22, 23) and the center line of the slide groove (80) is 0 °.

  On the other hand, in the sixth invention, a straight line orthogonal to both the axis of the pin shaft portion (70) and the axis of the eccentric portion (22, 23) forms an acute angle with the center line of the slide groove (80). . That is, in the present invention, the angle formed by the straight line perpendicular to the axis of the pin shaft portion (70) and the eccentric portion (22, 23) and the center line of the slide groove (80) is less than 90 °.

  In the seventh and eighth inventions, the slide groove (80) formed in the non-rotating member (69) is linear. The side surface of the slide groove (80) is flat, and the side surface of the slide groove (80) slides with the pin shaft portion (70).

  In the seventh invention, the center line of the slide groove (80) is orthogonal to both the axis of the pin shaft portion (70) and the axis of the rotary shaft (20). That is, in the present invention, the angle formed by the straight line perpendicular to the axis of the pin shaft portion (70) and the rotating shaft (20) and the center line of the slide groove (80) is 0 °.

  On the other hand, in the eighth invention, a straight line perpendicular to both the axis of the pin shaft portion (70) and the axis of the rotary shaft (20) forms an acute angle with the center line of the slide groove (80). That is, in the present invention, the angle formed by the straight line perpendicular to the axis of the pin shaft portion (70) and the rotating shaft (20) and the center line of the slide groove (80) is less than 90 °.

  In the ninth aspect of the invention, the housing member (45) is provided in the scroll type fluid machine (10) as the non-rotating member (69). In this scroll type fluid machine, the non-orbiting scroll (60) and the housing member (45) constitute the non-orbiting member (69). The pin shaft portion (70) is attached to one or both of the housing member (45) and the non-orbiting scroll (60). That is, the pin shaft portion (70) may be attached only to the housing member (45), or may be attached only to the non-orbiting scroll (60). The pin shaft portion (70) may have one end attached to the housing member (45) and the other end attached to the non-orbiting scroll (60). Furthermore, the pin shaft portion (70) may be attached one by one to the opposing position in the housing member (45) and the non-orbiting scroll (60).

  In the tenth invention, the slide groove (80) is formed in the orbiting end plate portion (51) of the orbiting scroll (50). The slide groove (80) is formed in a concave groove shape, and opens on the surface of the swivel end plate portion (51). That is, the slide groove (80) is a bottomed groove opened on the front surface on which the swirl wrap (52) is erected or on the back surface opposite to the swirl wrap (52).

  In the eleventh aspect, the slide groove (80) is formed in the orbiting end plate portion (51) of the orbiting scroll (50). The slide groove (80) is a groove that penetrates the turning end plate portion (51) in the thickness direction. That is, the slide groove (80) is a groove formed by cutting out a part of the swivel end plate portion (51).

  In the twelfth and thirteenth inventions, the housing member (45) is provided in the scroll type fluid machine (10) as the non-rotating member (69). In this scroll type fluid machine, the non-orbiting scroll (60) and the housing member (45) constitute the non-orbiting member (69). In the twelfth aspect of the invention, the slide groove (80) is formed only in one of the housing member (45) and the non-orbiting scroll (60). On the other hand, in the thirteenth aspect, the slide groove (80) is formed in each of the housing member (45) and the non-orbiting scroll (60).

  In the fourteenth aspect, the pin shaft portion (70) formed in a columnar shape is fixed to the non-rotating member (69). That is, the pin shaft portion (70) is attached to the non-rotating member (69) in a state where relative movement with respect to the non-turning member (69) is prohibited by a method such as press fitting. In the columnar pin shaft portion (70), the portion of the side surface that slides with the wall surface of the slide groove (80) (that is, the sliding surface (95)) is an arc surface. The rotation of the orbiting scroll (50) is restricted by the sliding surface (95), which is an arcuate surface, sliding with the wall surface of the slide groove (80).

  In the fifteenth aspect of the invention, the pin shaft portion (70) has a shape that is partially cut away. Specifically, the pin shaft portion (70) is a portion closer to the rotating shaft (20) than the sliding surface (95) with the wall surface of the slide groove (80), that is, the orbiting scroll than the sliding surface (95). (50) and the part located in the center side of a non-orbiting scroll (60) are formed in the shape which was excised.

  In the sixteenth aspect of the invention, the slide groove (80) passes through the swivel end plate portion (51). In the seventeenth aspect of the invention, the slide groove (80) has a concave groove shape and is formed on the surface on the side of the turning wrap (52) in the turning end plate portion (51). That is, in the orbiting scroll (50) of these inventions, the slide groove (80) is opened on the surface of the orbiting end plate portion (51) on the side of the orbiting wrap (52). In these inventions, the end of the slide groove (80) on the side of the orbiting wrap (52) is located at a position larger than twice the revolution radius of the orbiting lap (52) from the outer surface on the side of the orbiting wrap (52). It is in a remote position.

  In the eighteenth aspect, the pin shaft portion (70) formed in a columnar shape is fixed to the orbiting scroll (50). That is, the pin shaft portion (70) is attached to the orbiting scroll (50) in a state where relative movement with respect to the orbiting scroll (50) is prohibited by a method such as press fitting. In the columnar pin shaft portion (70), the portion of the side surface that slides with the wall surface of the slide groove (80) (that is, the sliding surface (95)) is an arc surface. The rotation of the orbiting scroll (50) is restricted by the sliding surface (95), which is an arcuate surface, sliding with the wall surface of the slide groove (80).

  In the nineteenth aspect of the invention, the pin shaft portion (70) has a shape that is partially cut away. Specifically, the pin shaft portion (70) is a portion closer to the rotating shaft (20) than the sliding surface (95) with the wall surface of the slide groove (80), that is, the orbiting scroll than the sliding surface (95). (50) and the part located in the center side of a non-orbiting scroll (60) are formed in the shape which was excised.

  In the twentieth invention, the pin shaft portion (70) attached to the non-rotating member (69) can be rotated with respect to the non-rotating member (69). In the twenty-first aspect, the pin shaft portion (70) attached to the orbiting scroll (50) can be rotated with respect to the orbiting scroll (50). That is, in these inventions, the pin shaft portion (70) can be associated with the side surface of the slide groove (80) when sliding.

  In the twenty-second aspect, the planar sliding surface (72) is formed on the pin shaft portion (70). During the revolution of the orbiting scroll (50), the sliding surface (72) of the pin shaft portion (70) slides on the side surface of the slide groove (80), and at the same time, the pin shaft portion (70) rotates. The force for limiting the rotation of the orbiting scroll (50) acts on the sliding surface (72) of the pin shaft portion (70).

  In each of the twenty-third to twenty-seventh aspects, the pin shaft portion (70) is constituted by the main body member (73) and the bush member (74). In the pin shaft portion (70), the main body member (73) is formed in a columnar shape, and the bush member (74) is attached to the main body member (73). The bush member (74) of the pin shaft portion (70) slides against the wall surface of the slide groove (80).

  In the twenty-third aspect, the body member (73) is attached to the member to which the pin shaft portion (70) is attached. That is, in the configuration in which the pin shaft portion (70) is attached to the non-turning member (69), the main body member (73) is attached to the non-turning member (69), and the pin shaft portion (70) is attached to the turning scroll (50). Then, the orbiting scroll (50) is attached to the non-orbiting member (69).

  In the twenty-fourth aspect, the main body member (73) formed in a columnar shape is fixed to the non-rotating member (69). That is, the main body member (73) is attached to the non-turning member (69) in a state where relative movement with respect to the non-turning member (69) is prohibited by a method such as press fitting. On the other hand, in the twenty-fifth aspect of the invention, the columnar body member (73) is fixed to the orbiting scroll (50). That is, the main body member (73) is attached to the orbiting scroll (50) in a state where relative movement with respect to the orbiting scroll (50) is prohibited by a method such as press fitting. In these twenty-fourth and twenty-fifth aspects, the bush member (74) is rotatably attached to the main body member (73). During the revolution of the orbiting scroll (50), the bush member (74) slides on the side surface of the slide groove (80) and is rotatable.

  In the twenty-sixth aspect, the main body member (73) formed in a columnar shape is attached to the non-rotating member (69). The main body member (73) is rotatable with respect to the non-rotating member (69). In the twenty-seventh aspect, the columnar body member (73) is attached to the orbiting scroll (50). The main body member (73) is rotatable with respect to the orbiting scroll (50). In the twenty-sixth and twenty-seventh aspects, the bush member (74) is fixed to the main body member (73). That is, the bush member (74) is attached to the main body member (73) in a state where relative movement with respect to the main body member (73) is prohibited by a method such as press fitting. The bush member (74) fixed to the main body member (73) is rotatable together with the main body member (73).

  In the twenty-eighth aspect, the planar sliding surface (75) is formed on the bush member (74). During the revolution of the orbiting scroll (50), the sliding surface (75) of the bush member (74) slides with the side surface of the slide groove (80). The force for limiting the rotation of the orbiting scroll (50) acts on the sliding surface (75) of the bush member (74).

  In the twenty-ninth aspect, the slide groove (80) is formed in the orbiting end plate portion (51) of the orbiting scroll (50). In the swivel end plate portion (51), the slide groove (80) is disposed near the outer peripheral side end of the swirl wrap (52). Then, the slide groove (80) formed in the orbiting scroll (50) engages with the pin shaft portion (70) attached to the non-orbiting member (69).

  In the thirtieth aspect, the slide groove (80) is formed in the orbiting end plate portion (51) of the orbiting scroll (50). In the swivel end plate portion (51), the slide groove (80) is formed at a position further advanced than the outer peripheral side end portion of the swirl wrap (52).

  In the thirty-first aspect, the pin shaft portion (70) is attached to the orbiting end plate portion (51) of the orbiting scroll (50). In the swivel end plate portion (51), the pin shaft portion (70) is disposed in the vicinity of the outer peripheral side end of the swirl wrap (52). The pin shaft portion (70) attached to the orbiting scroll (50) engages with the slide groove (80) formed in the non-orbiting member (69).

  In the thirty-second aspect, the pin shaft portion (70) is attached to the orbiting end plate portion (51) of the orbiting scroll (50). In the swivel end plate portion (51), the pin shaft portion (70) is provided at a position further advanced than the outer peripheral side end portion of the swirl wrap (52).

  In the thirty-third aspect, the turning wrap (52) has a constant thickness. That is, the shape of the orbiting wrap (52) is the same as that of a general scroll type fluid machine in which the rotation of the movable scroll is completely prohibited. On the other hand, the non-turning wrap (63) has a shape in which the thickness gradually increases and decreases from the inner peripheral side end portion toward the outer peripheral side end portion.

  In the thirty-fourth aspect, the non-turning wrap (63) has a constant thickness. That is, the shape of the non-orbiting wrap (63) is the same as that of a general scroll type fluid machine in which the rotation of the movable scroll is completely prohibited. On the other hand, the turning wrap (52) has a shape in which the thickness gradually increases and decreases from the inner peripheral side end portion toward the outer peripheral side end portion.

  In the thirty-fifth aspect of the invention, the orbiting wrap (52) has a shape in which the thickness gradually increases and decreases from the inner peripheral end to the outer peripheral end. The non-turning wrap (63) also has a shape in which the thickness gradually increases and decreases from the inner peripheral side end portion toward the outer peripheral side end portion.

  In the thirty-sixth aspect of the invention, the outer peripheral end of the non-orbiting wrap (63) extends to the vicinity of the outer peripheral end of the orbiting wrap (52). That is, the length from the inner peripheral side end portion to the outer peripheral side end portion is longer for the non-orbiting wrap (63) than for the orbiting wrap (52). Here, in the scroll type fluid machine, the fluid chamber (41) is generally formed in pairs on the inner peripheral side and the outer peripheral side of the swirl wrap (52). In the scroll fluid machine (10) of the present invention, the non-orbiting wrap (63) is longer than the orbiting wrap (52), and the maximum volume of each fluid chamber (41) is the outer peripheral side of the orbiting wrap (52). The fluid chamber (42) formed on the inner side is larger than the fluid chamber (43) formed on the inner peripheral side thereof.

  In the thirty-seventh and thirty-eighth aspects, the movable scroll (50) is engaged with the eccentric pin (22) of the crank (20). When the crank (20) rotates, the movable scroll (50) revolves around the axis of the crank (20). The revolution radius of the movable scroll (50) is equal to the eccentric amount of the eccentric pin (22) in the crank (20), that is, the distance between the axis of the crank (20) and the axis of the eccentric pin (22). Further, in the scroll type fluid machine (10) of these inventions, at least the fixed scroll (60) is provided as the fixed side member (69). In the scroll type fluid machine (10), other members may be provided as the fixed side member (69) together with the fixed scroll (60).

  In the thirty-seventh aspect of the invention, the fixed side member (69) is provided with the pin shaft portion (70), and the slide groove (80) that engages with the pin shaft portion (70) is formed in the movable scroll (50). . In the fixed side member (69), the pin shaft portion (70) is disposed such that the distance from the shaft center to the shaft center of the crank (20) is longer than the revolution radius of the movable scroll (50). Yes. For this reason, the movable scroll (50) revolves with the slide groove (80) formed therein engaged with the pin shaft portion (70). During the revolution of the movable scroll (50), the side surface of the slide groove (80) slides with the pin shaft portion (70), and the movable scroll (50) formed with the slide groove (80) is moved to the pin shaft portion (70). ) Then, the pin shaft portion (70) engaged with the slide groove (80) guides the movable scroll (50), thereby limiting the rotation of the movable scroll (50). However, in this invention, the rotation of the movable scroll (50) is not completely prohibited, and a certain amount of rotation of the movable scroll (50) is allowed.

  In the thirty-eighth aspect of the invention, the movable scroll (50) is provided with the pin shaft portion (70), and the slide groove (80) that engages with the pin shaft portion (70) is formed in the fixed side member (69). . In the movable scroll (50), the pin shaft portion (70) is arranged such that the distance from the shaft center to the shaft center of the eccentric pin (22) is longer than the revolution radius of the movable scroll (50). Yes. For this reason, the movable scroll (50) revolves in a state where the pin shaft portion (70) provided therein is engaged with the slide groove (80). During the revolution of the movable scroll (50), the side surface of the slide groove (80) slides with the pin shaft portion (70), and the pin shaft portion (70) provided on the movable scroll (50) moves to the slide groove (80 ) And rotation of a movable scroll (50) is restrict | limited by guiding a movable scroll (50) provided with a pin shaft part (70) to a slide groove (80). However, in this invention, the rotation of the movable scroll (50) is not completely prohibited, and a certain amount of rotation of the movable scroll (50) is allowed.

  In the 39th and 40th aspects of the invention, the slide groove (80) formed in the movable scroll (50) is linear. The side surface of the slide groove (80) is flat, and the side surface of the slide groove (80) slides with the pin shaft portion (70).

  In the thirty-ninth aspect, the center line of the slide groove (80) is orthogonal to both the axis of the pin shaft portion (70) and the axis of the eccentric pin (22). That is, in the present invention, the angle formed by the straight line perpendicular to the axis of the pin shaft portion (70) and the eccentric pin (22) and the center line of the slide groove (80) is 0 °.

  On the other hand, in the fortieth aspect, a straight line perpendicular to both the axis of the pin shaft portion (70) and the axis of the eccentric pin (22) forms an acute angle with the center line of the slide groove (80). That is, in the present invention, the angle formed by the straight line perpendicular to the axis of the pin shaft portion (70) and the eccentric pin (22) and the center line of the slide groove (80) is less than 90 °.

  In the forty-first and forty-second inventions, the slide groove (80) formed in the stationary member (69) is linear. The side surface of the slide groove (80) is flat, and the side surface of the slide groove (80) slides with the pin shaft portion (70).

  In the forty-first aspect, the center line of the slide groove (80) is orthogonal to both the axis of the pin shaft portion (70) and the axis of the crank (20). That is, in the present invention, the angle formed by the straight line perpendicular to the axis of the pin shaft portion (70) and the crank (20) and the center line of the slide groove (80) is 0 °.

  On the other hand, in the forty-second aspect of the present invention, a straight line perpendicular to both the axis of the pin shaft portion (70) and the axis of the crank (20) forms an acute angle with the center line of the slide groove (80). That is, in the present invention, the angle formed by the straight line perpendicular to the axis of the pin shaft portion (70) and the crank (20) and the center line of the slide groove (80) is less than 90 °.

  In the forty-third aspect of the invention, the housing member (45) is provided in the scroll type fluid machine (10) as the fixed side member (69). In this scroll type fluid machine, the fixed scroll (60) and the housing member (45) constitute a fixed side member (69). The pin shaft portion (70) is attached to one or both of the housing member (45) and the fixed scroll (60). That is, the pin shaft portion (70) may be attached only to the housing member (45), or may be attached only to the fixed scroll (60). The pin shaft portion (70) may have one end attached to the housing member (45) and the other end attached to the fixed scroll (60). Further, the pin shaft portions (70) may be attached one by one at opposing positions in the housing member (45) and the fixed scroll (60).

  In the forty-fourth aspect of the invention, the slide groove (80) is formed in the movable side end plate portion (51) of the movable scroll (50). The slide groove (80) is formed in a concave groove shape, and opens on the surface of the movable side end plate portion (51). That is, the slide groove (80) is a bottomed groove opened on the front surface on which the movable wrap (52) is erected or on the back surface opposite to the movable wrap (52).

  In the forty-fifth aspect of the invention, the slide groove (80) is formed in the movable side end plate portion (51) of the movable scroll (50). The slide groove (80) is a groove that penetrates the movable side end plate portion (51) in the thickness direction. That is, the slide groove (80) is a groove formed by cutting out a part of the movable side end plate portion (51).

  In the forty-sixth and forty-seventh inventions, the housing member (45) is provided in the scroll fluid machine (10) as the stationary member (69). In this scroll type fluid machine, the fixed scroll (60) and the housing member (45) constitute a fixed side member (69). In the forty-sixth aspect of the present invention, the slide groove (80) is formed in only one of the housing member (45) and the fixed scroll (60). On the other hand, in the forty-seventh aspect of the present invention, the slide groove (80) is formed in each of the housing member (45) and the fixed scroll (60).

  In the forty-eighth aspect, the pin shaft portion (70) formed in a columnar shape is fixed to the stationary member (69). That is, the pin shaft portion (70) is attached to the fixed side member (69) in a state where relative movement with respect to the fixed side member (69) is prohibited by a method such as press fitting. In the forty-ninth aspect, the pin shaft portion (70) formed in a columnar shape is fixed to the movable scroll (50). That is, the pin shaft portion (70) is attached to the movable scroll (50) in a state where relative movement with respect to the movable scroll (50) is prohibited by a method such as press fitting. In these inventions, the side surface of the pin shaft portion (70) formed in a columnar shape, that is, the curved surface slides with the side surface of the slide groove (80).

  In the fifty aspect of the invention, the pin shaft portion (70) attached to the fixed side member (69) can rotate with respect to the fixed side member (69). In the fifty-first aspect, the pin shaft portion (70) attached to the movable scroll (50) can rotate with respect to the movable scroll (50). That is, in these inventions, the pin shaft portion (70) can be associated with the side surface of the slide groove (80) when sliding.

  In the 52nd aspect of the invention, the flat sliding surface (72) is formed on the pin shaft portion (70). During the revolution of the movable scroll (50), the sliding surface (72) of the pin shaft portion (70) slides on the side surface of the slide groove (80), and at the same time, the pin shaft portion (70) rotates. The force for limiting the rotation of the movable scroll (50) acts on the sliding surface (72) of the pin shaft portion (70).

  In each of the 53rd to 57th inventions, the pin shaft portion (70) is constituted by the body member (73) and the bush member (74). In the pin shaft portion (70), the main body member (73) is formed in a columnar shape, and the bush member (74) is attached to the main body member (73). The bush member (74) of the pin shaft portion (70) slides against the wall surface of the slide groove (80).

  In the fifty-third invention, the main body member (73) is attached to the member to which the pin shaft portion (70) is attached. That is, in the configuration in which the pin shaft portion (70) is attached to the fixed side member (69), the main body member (73) is attached to the fixed side member (69), and the pin shaft portion (70) is attached to the movable scroll (50). Then, the movable scroll (50) is attached to the fixed member (69).

  In the 54th aspect of the invention, the columnar body member (73) is fixed to the stationary member (69). That is, the main body member (73) is attached to the fixed side member (69) in a state where relative movement with respect to the fixed side member (69) is prohibited by a method such as press fitting. On the other hand, in the 55th aspect of the invention, the columnar body member (73) is fixed to the movable scroll (50). That is, the main body member (73) is attached to the movable scroll (50) in a state where relative movement with respect to the movable scroll (50) is prohibited by a method such as press fitting. In these 54th and 55th inventions, the bush member (74) is rotatably attached to the main body member (73). During the revolution of the movable scroll (50), the bush member (74) slides on the side surface of the slide groove (80) and is rotatable.

  In the fifty-sixth aspect of the present invention, the main body member (73) formed in a columnar shape is attached to the stationary member (69). The main body member (73) is rotatable with respect to the fixed side member (69). In the 57th aspect of the invention, the columnar body member (73) is attached to the movable scroll (50). The main body member (73) is rotatable with respect to the movable scroll (50). In these 56th and 57th inventions, the bush member (74) is fixed to the main body member (73). That is, the bush member (74) is attached to the main body member (73) in a state where relative movement with respect to the main body member (73) is prohibited by a method such as press fitting. The bush member (74) fixed to the main body member (73) is rotatable together with the main body member (73).

  In the 58th aspect of the invention, the planar sliding surface (75) is formed on the bush member (74). During the revolution of the movable scroll (50), the sliding surface (75) of the bush member (74) slides with the side surface of the slide groove (80). The force for limiting the rotation of the movable scroll (50) acts on the sliding surface (75) of the bush member (74).

  In the 59th aspect of the invention, the slide groove (80) is formed in the movable side end plate portion (51) of the movable scroll (50). In the movable side end plate portion (51), the slide groove (80) is disposed near the outer peripheral side end of the movable side wrap (52). Then, the slide groove (80) formed in the movable scroll (50) engages with the pin shaft portion (70) attached to the fixed side member (69).

  In the 60th aspect of the invention, the pin shaft portion (70) is attached to the movable side end plate portion (51) of the movable scroll (50). In the movable side end plate portion (51), the pin shaft portion (70) is disposed near the outer peripheral side end of the movable side wrap (52). And the pin axial part (70) attached to the movable scroll (50) engages with the slide groove (80) formed in the stationary-side member (69).

  In the sixty-first aspect, the movable side wrap (52) has a constant thickness. That is, the shape of the movable side wrap (52) is the same as that of a general scroll type fluid machine in which the rotation of the movable scroll is completely prohibited. On the other hand, the fixed side wrap (63) has a shape in which the thickness gradually increases and decreases from the inner peripheral side end to the outer peripheral side end.

  In the 62nd aspect of the invention, the fixed side wrap (63) has a constant thickness. That is, the shape of the fixed side wrap (63) is the same as that of a general scroll type fluid machine in which the rotation of the movable scroll is completely prohibited. On the other hand, the movable wrap (52) has a shape in which the thickness gradually increases and decreases from the inner peripheral side end portion toward the outer peripheral side end portion.

  In the 63rd aspect of the invention, the movable wrap (52) has a shape in which the thickness gradually increases and decreases from the inner peripheral side end portion toward the outer peripheral side end portion. The fixed wrap (63) also has a shape in which the thickness gradually increases and decreases from the inner peripheral end to the outer peripheral end.

  In the 64th aspect of the invention, the outer peripheral end of the fixed wrap (63) extends to the vicinity of the outer peripheral end of the movable wrap (52). That is, the length from the inner peripheral side end to the outer peripheral side end is longer at the fixed side wrap (63) than at the movable side wrap (52). Here, in the scroll type fluid machine, the fluid chamber (41) is generally formed in pairs on the inner peripheral side and the outer peripheral side of the movable wrap (52). In the scroll type fluid machine (10) of the present invention, the fixed side wrap (63) is longer than the movable side wrap (52), and the maximum volume of each fluid chamber (41) is that of the movable side wrap (52). The fluid chamber (42) formed on the outer peripheral side is larger than the fluid chamber (43) formed on the inner peripheral side.

  In each of the first to fourth inventions, the rotation of the orbiting scroll (50) is limited by sliding the pin shaft portion (70) and the side surface of the slide groove (80). That is, the revolution of the orbiting scroll (50) is limited by a relatively simple mechanism in which the pin shaft portion (70) slides relatively along the slide groove (80). For this reason, for example, compared with the case where a general Oldham ring mechanism is employed as a mechanism for restricting the rotation of the movable scroll, the number of sliding portions required for restricting the rotation of the orbiting scroll (50) can be reduced. The friction loss accompanying sliding of members can be reduced. Therefore, according to these inventions, it is possible to reduce the friction loss that occurs when limiting the rotation of the orbiting scroll (50), and it is possible to reduce the loss of power in the scroll fluid machine (10).

  In the first to fourth inventions, the rotation of the orbiting scroll (50) is limited by sliding the pin shaft portion (70) and the side surface of the slide groove (80). It is not necessary to use a relatively large member such as an Oldham ring to regulate the rotation of 50). For this reason, in the past, power loss was also caused by stirring the lubricating oil when the relatively large Oldham ring moved, whereas according to these inventions, such a member stirs the lubricating oil. The loss resulting from the above can also be reduced, and also in this respect, the power loss in the scroll type fluid machine (10) can be reduced.

  In the fourteenth and eighteenth aspects of the present invention, a sliding surface (95) formed of an arc surface is formed on the pin shaft portion (70) formed in a columnar shape, and the sliding surface (95) is used as a wall surface of the sliding groove (80). And the rotation of the orbiting scroll (50) is limited. Therefore, the rotation of the orbiting scroll (50) can be limited by engaging the pin shaft portion (70) formed of a single member with the slide groove (80), and the structure of the scroll type fluid machine (10) is simplified. it can.

  In the fifteenth and nineteenth aspects of the present invention, the pin shaft portion (70) seems to have been cut away from the center of the orbiting scroll (50) and the non-orbiting scroll (60) relative to the sliding surface (95). It has become a shape.

  Here, the lubrication condition when the sliding surface (95) of the pin shaft portion (70) and the wall surface of the sliding groove (80) slide is the curvature of the sliding surface (95) of the pin shaft portion (70). The smaller the radius, the harder it becomes. Therefore, in order to reliably perform lubrication at this portion and avoid troubles such as seizure, it is desirable to increase the radius of curvature of the sliding surface (95) at the pin shaft portion (70) as much as possible. However, if the entire radius of the pin shaft (70) is increased and the radius of curvature of the sliding surface (95) is increased, the wrapping of the orbiting scroll (50) and the non-orbiting scroll (60) will become the pin shaft (70). There is a risk of interference.

  On the other hand, the shape of the pin shaft portion (70) in the fifteenth and nineteenth aspects of the invention is the portion of the pin shaft portion (70) located on the center side of the orbiting scroll (50) and the non-orbiting scroll (60). It has a shape that is cut out. In the orbiting scroll (50) and the non-orbiting scroll (60), a wrap or the like is formed on the center side. Therefore, according to these inventions, the slidable scroll (50) and the non-orbiting scroll (60) are prevented from interfering with the pin shaft portion (70) and the sliding at the pin shaft portion (70). Lubrication can be improved by increasing the radius of curvature of the moving surface (95).

  In the sixteenth and seventeenth aspects of the present invention, the slide groove (80) is opened on the surface of the swivel end plate portion (51) on the swirl wrap (52) side. In these inventions, the distance from the end of the slide groove (80) on the side of the orbiting wrap (52) to the outer surface on the side of the orbiting wrap (52) is more than twice the revolution radius of the orbiting wrap (52). It is getting longer.

  Here, in the scroll type fluid machine (10), the wraps of the orbiting scroll (50) and the non-orbiting scroll (60) are engaged with each other to form a fluid chamber (41). When the inner circumferential surface of the wrap of the non-orbiting scroll (60) reaches the slide groove (80) during the revolution of the orbiting scroll (50), the fluid chamber (41) communicates with the slide groove (80) and the fluid chamber ( 41) The fluid inside leaks into the slide groove (80).

  In contrast, in the sixteenth and seventeenth aspects of the invention, the end of the slide groove (80) on the side of the orbiting wrap (52) has an orbiting radius of the orbiting wrap (52) from the outer surface on the side of the orbiting wrap (52). More than twice as far away. For this reason, in these inventions, during the revolution of the orbiting wrap (52), the inner peripheral surface of the non-orbiting scroll (60) reaches the outer side of the end of the slide groove (80) on the orbiting wrap (52) side. Never do. Therefore, according to these inventions, leakage of fluid from the fluid chamber (41) to the slide groove (80) can be prevented, and a decrease in efficiency of the scroll type fluid machine (10) can be avoided.

  In the twenty-second aspect of the invention, the planar sliding surface (72) is formed on the rotatable pin shaft portion (70), and the force for limiting the rotation of the orbiting scroll (50) is applied to the pin shaft portion ( Acts on the sliding surface (72) of 70). For this reason, the surface pressure acting on the sliding surface (72) of the pin shaft portion (70) and the side surface of the slide groove (80) during the revolution of the orbiting scroll (50) can be reduced, and the pin shaft portion (70 ) Between the sliding surface (72) and the side surface of the sliding groove (80). Therefore, according to the present invention, lubrication between the sliding surface (72) of the pin shaft portion (70) and the side surface of the sliding groove (80) can be reliably performed, and troubles such as seizure and wear occur. The reliability of the scroll type fluid machine (10) can be ensured by reducing the possibility.

  In each of the twenty-third to twenty-seventh aspects, the bush member (74) separate from the main body member (73) is slid on the side surface of the slide groove (80). Therefore, according to these inventions, the main body member (73) and the bush member (74) can be made of different materials, and the bush member (74) is made of a material having excellent sliding performance and lubrication performance. By doing so, it becomes possible to improve the reliability.

  In the twenty-eighth aspect of the present invention, the bush member (74) is formed with the flat sliding surface (75), and the force for limiting the rotation of the orbiting scroll (50) is the sliding of the bush member (74). Acts on the surface (75). Therefore, the surface pressure acting on the side surfaces of the bush member (74) and the slide groove (80) of the pin shaft portion (70) during the revolution of the orbiting scroll (50) can be reduced, and the bush member (74) The lubrication state between the sliding surface (75) and the side surface of the sliding groove (80) can be improved. Therefore, according to the present invention, the lubrication between the sliding surface (75) of the bush member (74) and the side surface of the sliding groove (80) can be reliably performed, and troubles such as seizure and wear may occur. The reliability of the scroll type fluid machine (10) can be ensured by reducing the performance.

  In the thirty-third aspect, the orbiting wrap (52) has the same shape as that of a general scroll type fluid machine in which the rotation of the movable scroll is completely prohibited. For this reason, the movable scroll of the scroll type fluid machine that has been generally used conventionally can be used, and the manufacturing cost of the scroll type fluid machine (10) according to the present invention can be reduced.

  In the thirty-fourth aspect, the non-orbiting wrap (63) has the same shape as that of a general scroll type fluid machine in which the rotation of the orbiting scroll (50) is completely prohibited. For this reason, it is possible to use a fixed scroll of a conventional scroll type fluid machine, and it is possible to reduce the manufacturing cost of the scroll type fluid machine (10) according to the present invention.

  In the thirty-fifth aspect of the invention, each of the turning wrap (52) and the non-turning wrap (63) has a shape in which the thickness gradually increases or decreases from the inner peripheral end to the outer peripheral end. For this reason, the fluctuation range of the thickness can be minimized for each of the turning wrap (52) and the non-turning wrap (63). Therefore, according to the present invention, it is possible to minimize the decrease in rigidity of the orbiting wrap (52) and the non-orbiting wrap (63) due to the change in thickness. The efficiency of the scroll type fluid machine (10) can be ensured by suppressing the fluid leakage caused by the deformation of the scroll.

  In the thirty-sixth aspect of the invention, the maximum volumes of the fluid chamber (43) formed on the inner peripheral side of the swirl wrap (52) and the fluid chamber (42) formed on the outer peripheral side thereof are different. On the other hand, in the scroll type fluid machine (10) of the present invention, the rotation of the orbiting scroll (50) is not completely prohibited. When the rotation of the orbiting scroll (50) is allowed during revolution, the maximum volume of each fluid chamber (42, 43) is different from that when the rotation of the orbiting scroll (50) is completely prohibited. . Therefore, according to the present invention, when adopting a configuration in which the lengths of the turning wrap (52) and the non-turning wrap (63) are different, each formed on the inner peripheral side and the outer peripheral side of the turning wrap (52). The difference in the maximum volume of the fluid chamber (42, 43) can be reduced.

  In each of the thirty-seventh and thirty-eighth inventions, the rotation of the movable scroll (50) is limited by sliding the pin shaft portion (70) and the side surface of the slide groove (80). That is, the revolution of the movable scroll (50) is limited by a relatively simple mechanism in which the pin shaft portion (70) slides relatively along the slide groove (80). For this reason, for example, compared with the case where a general Oldham ring mechanism is used as a mechanism for limiting the rotation of the movable scroll, the number of sliding portions required for limiting the rotation of the movable scroll (50) can be reduced. The friction loss accompanying sliding of members can be reduced. Therefore, according to these inventions, it is possible to reduce friction loss that occurs when limiting the rotation of the movable scroll (50), and it is possible to reduce power loss in the scroll fluid machine (10).

  In the thirty-seventh and thirty-eighth inventions, the rotation of the movable scroll (50) is limited by sliding the pin shaft portion (70) and the side surface of the slide groove (80). It is not necessary to use a relatively large member such as an Oldham ring to regulate the rotation of 50). For this reason, in the past, power loss was also caused by stirring the lubricating oil when the relatively large Oldham ring moved, whereas according to these inventions, such a member stirs the lubricating oil. The loss resulting from the above can also be reduced, and also in this respect, the power loss in the scroll type fluid machine (10) can be reduced.

  In the above-mentioned fifty-second invention, a planar sliding surface (72) is formed on the rotatable pin shaft portion (70), and the force for limiting the rotation of the movable scroll (50) is applied to the pin shaft portion ( Acts on the sliding surface (72) of 70). For this reason, the surface pressure acting on the sliding surface (72) of the pin shaft portion (70) and the side surface of the slide groove (80) during the revolution of the movable scroll (50) can be reduced, and the pin shaft portion (70 ) Between the sliding surface (72) and the side surface of the sliding groove (80). Therefore, according to the present invention, lubrication between the sliding surface (72) of the pin shaft portion (70) and the side surface of the sliding groove (80) can be reliably performed, and troubles such as seizure and wear occur. The reliability of the scroll type fluid machine (10) can be ensured by reducing the possibility.

  In each of the 53rd to 57th inventions, the bush member (74) separate from the main body member (73) is slid with the side surface of the slide groove (80). Therefore, according to these inventions, the main body member (73) and the bush member (74) can be made of different materials, and the bush member (74) is made of a material having excellent sliding performance and lubrication performance. By doing so, it becomes possible to improve the reliability.

  In the 58th aspect of the present invention, the bush member (74) is formed with the flat sliding surface (75), and the force for limiting the rotation of the movable scroll (50) is applied to the bush member (74). Acts on the surface (75). Therefore, the surface pressure acting on the side surfaces of the bush member (74) and the slide groove (80) of the pin shaft portion (70) during the revolution of the movable scroll (50) can be reduced, and the bush member (74) The lubrication state between the sliding surface (75) and the side surface of the sliding groove (80) can be improved. Therefore, according to the present invention, the lubrication between the sliding surface (75) of the bush member (74) and the side surface of the sliding groove (80) can be reliably performed, and troubles such as seizure and wear may occur. The reliability of the scroll type fluid machine (10) can be ensured by reducing the performance.

  In the sixty-first aspect, the movable wrap (52) has the same shape as that of a general scroll type fluid machine in which the rotation of the movable scroll is completely prohibited. For this reason, the movable scroll of the scroll type fluid machine that has been generally used conventionally can be used, and the manufacturing cost of the scroll type fluid machine (10) according to the present invention can be reduced.

  In the 62nd aspect of the invention, the fixed side wrap (63) has the same shape as that of a general scroll type fluid machine in which the rotation of the movable scroll (50) is completely prohibited. For this reason, it is possible to use a fixed scroll of a conventional scroll type fluid machine, and it is possible to reduce the manufacturing cost of the scroll type fluid machine (10) according to the present invention.

  In the 63rd aspect of the invention, each of the movable side wrap (52) and the fixed side wrap (63) has a shape in which the thickness gradually increases or decreases from the inner peripheral side end to the outer peripheral side end. . For this reason, the variation width of the thickness can be minimized for each of the movable side wrap (52) and the fixed side wrap (63). Therefore, according to the present invention, it is possible to minimize the decrease in rigidity of the movable side wrap (52) and the fixed side wrap (63) due to the change in thickness, and the movable side wrap (52) and the fixed side wrap ( The efficiency of the scroll type fluid machine (10) can be ensured by suppressing the fluid leakage caused by the deformation of 63).

  In the 64th aspect of the invention, the maximum volumes of the fluid chamber (43) formed on the inner peripheral side of the movable wrap (52) and the fluid chamber (42) formed on the outer peripheral side thereof are different. On the other hand, in the scroll type fluid machine (10) of the present invention, the rotation of the movable scroll (50) is not completely prohibited. If the rotation of the movable scroll (50) is allowed during revolution, the maximum volume of each fluid chamber (42, 43) becomes a value different from the case where the rotation of the movable scroll (50) is completely prohibited. . Therefore, according to the present invention, when the movable wrap (52) and the fixed wrap (63) have different lengths, the movable wrap (52) is formed on the inner peripheral side and the outer peripheral side. The difference in the maximum volume of each fluid chamber (42, 43) can be reduced.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Embodiment 1 of the Invention
A first embodiment of the present invention will be described. The scroll compressor (10) of this embodiment is constituted by a scroll type fluid machine according to the present invention. The scroll compressor (10) is provided in the refrigerant circuit of the refrigeration apparatus and is used to compress the gas refrigerant.

<Overall configuration of scroll compressor>
As shown in FIG. 1, the scroll compressor (10) is configured in a so-called completely sealed type. The scroll compressor (10) includes a casing (11) formed in a vertically long and cylindrical sealed container shape. In the casing (11), a lower bearing member (30), an electric motor (35), and a compression mechanism (40) are arranged in order from the bottom to the top. A drive shaft (20) that extends vertically is provided inside the casing (11).

  A suction pipe (12) is attached to the top of the casing (11). The end of the suction pipe (12) is connected to the compression mechanism (40). A discharge pipe (13) is attached to the body of the casing (11). The end of the discharge pipe (13) opens between the electric motor (35) and the compression mechanism (40) in the casing (11).

  The drive shaft (20) includes a main shaft portion (21) and an eccentric shaft portion (22) that is an eccentric portion, and constitutes a rotating shaft. The main shaft portion (21) has a slightly larger diameter at its upper end. The axis of the main shaft portion (21) becomes the axis of the rotating shaft (that is, the rotating shaft of the rotating shaft). The eccentric shaft portion (22) is formed in a cylindrical shape having a smaller diameter than the main shaft portion (21), and is erected on the upper end surface of the main shaft portion (21). The eccentric shaft portion (22) is eccentric with respect to the main shaft portion (21), and constitutes an eccentric pin. That is, the shaft center of the eccentric shaft portion (22) is parallel to the shaft center of the main shaft portion (21) and is separated from the shaft center of the main shaft portion (21) by a predetermined distance. The drive shaft (20) is not only a rotating shaft but also a crank. The eccentric shaft portion (22) is not only an eccentric portion but also an eccentric pin.

  Although not shown, an oil supply passage extending in the vertical direction is formed inside the drive shaft (20). A centrifugal pump is provided at the lower end of the main shaft (21). The refrigerating machine oil sucked up by the centrifugal pump from the bottom of the casing (11) is supplied to the compression mechanism (40) and the like through the oil supply passage in the drive shaft (20).

  The lower bearing member (30) is fixed near the lower end of the body portion of the casing (11). A slide bearing is formed at the center of the lower bearing member (30), and this slide bearing rotatably supports the lower end of the main shaft (21).

  The electric motor (35) includes a stator (36) and a rotor (37). The stator (36) is fixed to the body of the casing (11). The rotor (37) is fixed to the main shaft portion (21) of the drive shaft (20).

  The compression mechanism (40) includes a movable scroll (50) as a turning scroll, a fixed scroll (60) as a non-turning scroll, and a housing (45) as a housing member. In this compression mechanism (40), the fixed side wrap (63) of the fixed scroll (60) and the movable side wrap (52) of the movable scroll (50) are engaged with each other, so that the compression chamber (41 ) Is formed.

  As shown in FIGS. 2 and 3, the movable scroll (50) includes a movable side end plate (51) as a revolving end plate, a movable side wrap (52) as a revolving end, and a protruding cylinder (53). And.

  The movable side end plate portion (51) is formed in a slightly thick disc shape. In the movable side end plate portion (51), a movable side wrap (52) is projected on the front surface (upper surface in FIGS. 1 to 3), and a protruding cylinder portion (53) is formed on the rear surface (lower surface in FIGS. 1 to 3). Projected. In addition, a slide groove (80) is formed in the movable side end plate portion (51). The slide groove (80) will be described later.

  The movable side wrap (52) is erected on the upper surface side of the movable side end plate part (51), and is formed integrally with the movable side end plate part (51). The movable wrap (52) is formed in a spiral wall shape having a constant height. The movable wrap (52) will be described later.

  The protruding cylinder part (53) is formed in a cylindrical shape, and is arranged substantially at the center of the back surface of the movable side end plate part (51). An eccentric shaft portion (22) of the drive shaft (20) is inserted into the protruding cylinder portion (53). That is, the eccentric shaft portion (22) of the drive shaft (20) is engaged with the movable scroll (50). When the drive shaft (20) rotates, the movable scroll (50) engaged with the eccentric shaft portion (22) revolves around the shaft center of the main shaft portion (21). At that time, the revolution radius of the movable scroll (50) coincides with the distance between the shaft center of the eccentric shaft portion (22) and the shaft center of the main shaft portion (21), that is, the eccentric amount of the eccentric shaft portion (22).

  The fixed scroll (60) is fixed to the body of the casing (11). The fixed scroll (60) includes a fixed side end plate portion (61) as a non-revolving end plate portion, an edge portion (62), and a fixed side wrap (63) as a non-revolving end wrap. The fixed scroll (60) is provided with a pin shaft portion (70). The pin shaft portion (70) will be described later.

  The fixed side end plate portion (61) is formed in a slightly thick disc shape. A discharge port (64) is formed at the center of the fixed-side end plate portion (61). The discharge port (64) penetrates the fixed side end plate portion (61).

  The edge portion (62) is formed in a wall shape extending downward from the peripheral portion of the fixed side end plate portion (61). The lower end portion of the edge portion (62) protrudes outward over the entire circumference. Moreover, the edge part (62) protrudes outside at three places in the circumferential direction.

  The fixed side wrap (63) is erected on the lower surface side of the fixed side end plate part (61), and is formed integrally with the fixed side end plate part (61). The fixed side wrap (63) is formed in a spiral wall shape having a constant height. The fixed side wrap (63) will be described later.

  The housing (45) is fixed to the body of the casing (11). This housing (45) is comprised by the upper step part (46), the middle step part (47), and the lower step part (48) (refer FIG. 3). The upper part (46) is formed in a dish shape. The middle step (47) is formed in a cylindrical shape having a smaller diameter than the upper step (46), and projects downward from the lower surface of the upper step (46). The lower step (48) is formed in a cylindrical shape having a smaller diameter than the middle step (47), and protrudes downward from the lower surface of the middle step (47). The main shaft portion (21) of the drive shaft (20) is inserted through the lower step portion (48), and the lower step portion (48) serves as a sliding bearing that supports the drive shaft (20).

  As described above, in the compression mechanism (40), the fixed scroll (60) and the housing (45) are fixed to the casing (11). That is, the fixed scroll (60) and the housing (45) are both arranged in the same coordinate system. In this compression mechanism (40), the fixed scroll (60) and the housing (45) constitute a non-rotating member (69). The non-rotating member (69) constituted by the fixed scroll (60) and the housing (45) is also a fixed side member.

  In the compression mechanism (40), the movable scroll (50) is housed in a space surrounded by the fixed scroll (60) and the housing (45). The movable scroll (50) is placed on the upper stage (46) of the housing (45). The back surface of the movable side end plate portion (51) slides with the bottom surface of the upper step portion (46). Further, the protruding cylinder portion (53) is located inside the middle step portion (47) of the housing (45).

<Configuration of pin shaft and slide groove>
As described above, the movable scroll (50) has the slide groove (80), and the fixed scroll (60) has the pin shaft portion (70). In the compression mechanism (40), the movable scroll (50) revolves around the axis of the main shaft portion (21), and at the same time, the pin shaft portion (70) is engaged with the slide groove (80) to move the movable scroll (50). ) Is regulated.

  First, specific structures of the slide groove (80) and the pin shaft portion (70) will be described with reference to FIGS.

  In the movable side end plate portion (51), the slide groove (80) is formed in the vicinity of the outer peripheral side end of the movable side wrap (52). Specifically, the slide groove (80) is provided at a position advanced further than the outer peripheral end along the spiral direction of the movable wrap (52). The slide groove (80) is a straight concave groove having a constant width, and extends substantially in the radial direction of the movable side end plate portion (51). The slide groove (80) opens not only on the front surface (upper surface in FIGS. 2 and 3) of the movable side end plate portion (51) but also on the outer peripheral surface of the movable side end plate portion (51). That is, the slide groove (80) is a bottomed concave groove that does not penetrate the movable side end plate part (51), and is not open on the back surface of the movable side end plate part (51).

  In the fixed scroll (60), the pin shaft portion (70) is provided so as to protrude from the lower surface of the edge portion (62). The pin shaft portion (70) is disposed at a position facing the slide groove (80) of the movable scroll (50) on the lower surface of the edge portion (62).

  The pin shaft portion (70) is constituted by a single columnar pin (71) formed in a cylindrical shape. The outer diameter of the columnar pin (71) is slightly smaller than the width of the slide groove (80). The base end portion (upper end portion in FIGS. 2 and 3) of the columnar pin (71) is embedded in the edge portion (62) of the fixed scroll (60). Specifically, a hole for inserting the columnar pin (71) is formed in advance in the edge (62), and the columnar pin (71) is press-fitted into the hole. That is, the columnar pin (71) constituting the pin shaft portion (70) is fixed to the fixed scroll (60), and is in a state in which relative movement with respect to the fixed scroll (60) is prohibited. On the other hand, the protruding end portion (the lower end portion in FIGS. 2 and 3) of the columnar pin (71) is fitted in the slide groove (80) of the movable scroll (50). That is, the columnar pin (71) constituting the pin shaft portion (70) is engaged with the slide groove (80).

Next, the arrangement and shape of the slide groove (80) and the pin shaft portion (70) will be described with reference to FIG. FIG. 4 shows the positional relationship between the shaft center of the main shaft portion (21), the eccentric shaft portion (22), and the columnar pin (71) and the slide groove (80) orthogonal to the shaft center of the main shaft portion (21). It is shown on the plane to do. In FIG. 4, Of is the axial center position of the main shaft portion (21), Os is the axial center position of the eccentric shaft portion (22), and Op is the axial center of the columnar pin (71) constituting the pin shaft portion (70). The position L ₁ represents the center line in the width direction of the slide groove (80).

  As described above, the movable scroll (50) revolves around the axis of the main shaft (21). In FIG. 4, the revolution radius of the movable scroll (50) is expressed as the length of the line segment OfOs. Further, the distance between the axial centers of the columnar pin (71) and the main shaft portion (21) is expressed as the length of the line segment OpOf. As shown in FIG. 4, the line segment OfOf is longer than the line segment OfOs. In other words, in the fixed scroll (60), the columnar pin (71) constituting the pin shaft portion (70) has a distance between its axis and the axis of the main shaft (21) that is greater than the revolution radius of the movable scroll (50). Are also arranged to be longer.

The columnar pin (71) constituting the pin shaft portion (70) has an outer diameter that substantially matches the width of the slide groove (80). Therefore, it becomes possible axial position Op of the FIG columnar pin (71) rides on the center line L ₁ of the slide groove (80), the center line axis of the slide groove (80) of the columnar pin (71) Orthogonal to Further, as shown in FIG. 4, on the center line L ₁ of the slide groove (80) is riding a central axial position Os of the eccentric shaft portion (22), the axis also slide groove of the eccentric shaft portion (22) It is orthogonal to the center line of (80). Therefore, the center line of the slide groove (80) is orthogonal to both the axis of the eccentric shaft (22) and the axis of the columnar pin (71) constituting the pin shaft (70). That is, in the movable scroll (50), the slide groove (80) is formed such that the center line thereof is orthogonal to both the axis of the eccentric shaft portion (22) and the axis of the columnar pin (71). .

<Configuration of movable wrap and fixed wrap>
The movable side wrap (52) and the fixed side wrap (63) will be described with reference to FIG.

  As described above, each of the movable side wrap (52) and the fixed side wrap (63) is formed in a spiral wall shape. In the scroll compressor (10) of the present embodiment, a so-called asymmetric spiral structure is adopted, and the number of windings is different between the fixed side wrap (63) and the movable side wrap (52). Specifically, the fixed wrap (63) is longer than the movable wrap (52) by about ½ turn. And the outer peripheral side edge part of the fixed side wrap (63) is located in the vicinity of the outer peripheral side edge part of the movable side wrap (52). In addition, as for this fixed side wrap (63), the outermost peripheral part is integrated with the edge part (62) (refer FIG. 2).

  As described above, the movable wrap (52) and the fixed wrap (63) mesh with each other to form a plurality of compression chambers (41). In the plurality of compression chambers (41), the one facing the outer surface (outer wrap surface) of the movable wrap (52) is the A chamber (42), and the inner surface (inner wrap surface) of the movable wrap (52) is formed. The room facing us is room B (43). In this embodiment, since the number of turns of the fixed side wrap (63) is larger than the number of turns of the movable side wrap (52), the maximum volume of the A chamber (42) is larger than the maximum volume of the B chamber (43). ing.

  Here, in the scroll compressor (10) of this embodiment, the movable scroll (50) is different from a general scroll compressor. Specifically, in a general scroll compressor employing an Oldham ring mechanism or the like, the rotation of the movable scroll is completely prohibited, whereas in the scroll compressor (10) of the present embodiment, as described later, The rotation of the movable scroll (50) is allowed to some extent.

  Therefore, in the present embodiment, the shapes of the movable side wrap (52) and the fixed side wrap (63) are changed by changing the thicknesses of the movable side wrap (52) and the fixed side wrap (63). Adapted to movement. Specifically, the inner side surface and the outer side surface of the movable side wrap (52) and the inner side surface and the outer side surface of the fixed side wrap (63), that is, all the wrap surfaces are different from the shape in a general scroll type fluid machine. It has a shape. In the movable wrap (52) of the present embodiment, the portion where the thickness gradually increases and the portion where the thickness gradually decreases are formed alternately from the inner peripheral end to the outer peripheral end. Moreover, in the fixed side wrap (63) of this embodiment, from the inner peripheral side edge part to the outer peripheral side edge part, the part which thickness increases gradually and the part which thickness decreases gradually are formed alternately. The fixed side wrap (63) has an inner side surface as an envelope surface of the outer side surface of the movable side wrap (52), and an outer side surface thereof as an envelope surface of the inner side surface of the movable side wrap (52).

-Driving action-
First, the operation in which the scroll compressor (10) compresses the refrigerant will be described. As described above, the scroll compressor (10) of the present embodiment is provided in the refrigerant circuit of the refrigerator. The scroll compressor (10) sucks and compresses the low-pressure gas refrigerant from the evaporator, and sends the compressed high-pressure gas refrigerant to the condenser.

  Specifically, the rotational power generated by the electric motor (35) is transmitted to the movable scroll (50) by the drive shaft (20). The movable scroll (50) engaged with the eccentric shaft portion (22) of the drive shaft (20) revolves around the shaft center of the main shaft portion (21). At that time, the rotation of the movable scroll (50) is limited by the columnar pin (71) constituting the pin shaft portion (70) engaging with the slide groove (80).

  The low-pressure gas refrigerant sucked into the scroll compressor (10) flows into the compression mechanism (40) through the suction pipe (12). This gas refrigerant is sucked into the compression chamber (41) from the outer peripheral sides of the movable wrap (52) and the fixed wrap (63). When the orbiting scroll (50) revolves, the volume of the compression chamber (41) that is in a closed state decreases accordingly, and the gas refrigerant in the compression chamber (41) is compressed. The compressed and high-pressure gas refrigerant is discharged to the space above the compression mechanism (40) through the discharge port (64). The gas refrigerant discharged from the compression mechanism (40) flows into the space below the compression mechanism (40) through a passage outside the figure, and then passes through the discharge pipe (13) and from the casing (11). Discharged.

  Next, the movement of the movable scroll (50) will be described with reference to FIG. Note that “clockwise” and “counterclockwise” used in the description here mean “clockwise” and “counterclockwise” in FIG. 6, respectively.

  As shown in FIG. 6, the axial center of the columnar pin (71) constituting the pin shaft portion (70), the shaft center of the drive shaft (20), and the shaft center of the eccentric shaft portion (22) are in a straight line in order. The rotation angle of the drive shaft (20) at the time when the two are aligned is set to 0 °. 6A shows a state where the rotation angle of the drive shaft (20) is 0 ° or 360 °, FIG. 6B shows a state where the rotation angle of the drive shaft (20) is 90 °, and FIG. C) shows a state in which the rotation angle of the drive shaft (20) is 180 °, and FIG. 6 (D) shows a state in which the rotation angle of the drive shaft (20) is 270 °.

  When the drive shaft (20) rotates counterclockwise, the movable scroll (50) revolves around the axis of the main shaft (21). When the rotation angle of the drive shaft (20) reaches 180 °, the shaft center of the eccentric shaft portion (22) is between the shaft center of the columnar pin (71) and the shaft center of the drive shaft (20). Located (see FIG. 6C). Meanwhile, the side surface of the slide groove (80) slides with the side surface of the columnar pin (71), and the rotation of the movable scroll (50) is restricted.

  Specifically, the movable scroll (50) rotates counterclockwise as the rotation angle of the drive shaft (20) increases from 0 °. Thereafter, the movable scroll (50) rotates clockwise when the rotational angle of the drive shaft (20) reaches a predetermined value. When the rotation angle of the drive shaft (20) reaches 180 °, the orbiting scroll (50) has its rotation angle set to 0 ° in the same manner as when the rotation angle of the drive shaft (20) is 0 °. Become.

  When the drive shaft (20) continues to rotate counterclockwise, the rotation angle of the drive shaft (20) eventually becomes 360 ° and returns to the same state as the state where the rotation angle of the drive shaft (20) is 0 ° (FIG. 6A). )). Meanwhile, the side surface of the slide groove (80) slides with the side surface of the columnar pin (71), and the rotation of the movable scroll (50) is restricted.

  Specifically, as the rotation angle of the drive shaft (20) increases from 180 °, the movable scroll (50) rotates clockwise. Thereafter, the movable scroll (50) rotates counterclockwise when the rotational angle of the drive shaft (20) reaches a predetermined value. When the rotation angle of the drive shaft (20) reaches 360 °, the orbiting scroll (50) has its rotation angle set to 0 ° in the same manner as when the rotation angle of the drive shaft (20) is 0 °. Become.

-Effect of Embodiment 1-
In the present embodiment, the rotation of the movable scroll (50) is limited by sliding the columnar pin (71) constituting the pin shaft portion (70) and the side surface of the slide groove (80). That is, the revolution of the movable scroll (50) is limited by a relatively simple mechanism in which the pin shaft portion (70) slides relatively along the slide groove (80). For this reason, for example, compared with the case where a general Oldham ring mechanism is used as a mechanism for limiting the rotation of the movable scroll, the number of sliding portions required for limiting the rotation of the movable scroll (50) can be reduced. The friction loss accompanying sliding of members can be reduced.

  This point will be described with reference to FIG.

FIG. 7B shows a general scroll compressor that regulates the rotation of the movable scroll (100) using an Oldham ring mechanism. In this general scroll compressor, the friction loss W _O generated between the movable scroll (100) and the housing (101) and the Oldham ring (102) during one rotation of the drive shaft (103) is expressed by the following equation. expressed.
W _O = 2 × (F × μ × 4L _or ) + 2 × (F × μ × 4L _or )
= 2μ (M / L _F + M / L _R ) × 4L _or
F: Keyway reaction force on the movable scroll side
R: Keyway reaction force on the housing side
μ: Friction coefficient between Oldham ring key and keyway
L _F : Distance between keys that engage the movable scroll
L _R : Distance between keys engaged with the housing
L _OR : Eccentricity of eccentric part in drive shaft
M: Assuming that the rotation moment of the movable scroll is L _F = L _R = L _O , the equation representing the friction loss W _O is the following Equation 1.
W _O = 4 μ (M / L _O ) × 4L _or Formula 1
On the other hand, FIG. 7 (A) shows the scroll compressor (10) of the present embodiment. In this scroll compressor (10), the friction loss W _P generated between the columnar pin (71) constituting the pin shaft portion (70) and the slide groove (80) during one rotation of the drive shaft (20) is Is expressed by the following equation.
W _P = R ′ × μ × 4L _or
= Μ (M / L _P ) × 4L _or
R ': Reaction force exerted by the slide groove on the columnar pin
μ: Coefficient of friction between the columnar pin and the slide groove
L _P : Distance between the axis of the columnar pin and the eccentric part
L _OR : Eccentricity of eccentric part in drive shaft
M: In the scroll compressor of the rotating moment this embodiment of the movable scroll (10), usually considered to be a L _O ≒ 2L _P. Therefore, when it is assumed that L _O = 2L _P , the expression representing the friction loss W _P is Expression 2 below.
W _P = 2 μ (M / L _O ) × 4 L _or Formula 2
From the above formulas 1 and 2, W _P = 1/2 × W _O. That is, in the scroll compressor (10) of the present embodiment, the friction loss caused by the mechanism for limiting the rotation of the movable scroll (50) is about half that of a general scroll compressor using the Oldham ring mechanism. . Therefore, according to the present embodiment, the friction loss that occurs when limiting the rotation of the movable scroll can be substantially halved, and the power loss in the scroll compressor (10) can be reduced.

  In the scroll compressor (10) of the present embodiment, the rotation of the movable scroll (50) is limited by sliding the slide groove (80) formed in the movable scroll (50) with the pin shaft portion (70). ing. In other words, in this scroll compressor (10), only the movable scroll (50) moves in the compression mechanism (40), and the rotation of the movable scroll (50) without using a relatively large member such as an Oldham ring. Can be limited.

  For this reason, in the past, power loss was also caused by stirring the lubricating oil when a relatively large Oldham ring moved, whereas according to this embodiment, the lubricating oil was stirred by such a member. The resulting loss can be reduced, and the power loss in the scroll compressor (10) can also be reduced in this respect.

  Here, in the scroll compressor (10) of the present embodiment, an asymmetric spiral structure in which the number of turns of the fixed side wrap (63) is larger than the number of turns of the movable side wrap (52) is adopted, and the A chamber (42 ) Is larger than the maximum volume of the B chamber (43). On the other hand, in this scroll compressor (10), the rotation of the movable scroll (50) is not completely prohibited. When the rotation of the movable scroll (50) is allowed to some extent, the maximum volume of the chamber A (42) is reduced and the chamber B (43) is compared with the case where the rotation of the movable scroll (50) is completely prohibited. It is possible to increase the maximum volume. Therefore, according to the present embodiment, it is possible to reduce the difference in maximum volume between the A chamber (42) and the B chamber (43) when a so-called asymmetric spiral structure is employed. As a result, torque fluctuations required to drive the movable scroll (50) can be suppressed, and vibration of the scroll compressor (10) can be reduced.

  Moreover, in the scroll compressor (10) of this embodiment, since the columnar pin (71) which comprises a pin axial part (70) is provided in the fixed scroll (60), the columnar pin (71) and fixed side wrap The position accuracy of (63) can be ensured relatively easily. Therefore, according to this embodiment, the gap between the movable wrap (52) and the fixed wrap (63) can be reliably managed to suppress the leakage of the refrigerant gas from the compression chamber (41). The efficiency of (10) can be improved.

-Modification 1 of Embodiment 1-
In this embodiment, as shown in FIG. 8, the slide groove (80) may penetrate the movable side end plate part (51) of the movable side wrap (52). In this case, the slide groove (80) is formed by cutting out the movable side end plate portion (51) from its outer peripheral surface toward the center.

-Modification 2 of Embodiment 1
In this embodiment, as shown in FIG. 9, the columnar pin (71) which comprises a pin axial part (70) may be attached to the housing (45). In this modification, the slide groove (80) penetrates the movable side end plate part (51) of the movable side wrap (52), as in the first modification shown in FIG. In addition, this slide groove (80) may be formed in the concave groove shape opened on the back surface (lower surface in FIG. 8) of the movable side end plate portion (51).

  In the housing (45), the columnar pin (71) is provided so as to protrude upward from the bottom surface of the upper step (46). The base end portion (lower end portion in FIG. 9) of the columnar pin (71) is embedded in the bottom surface of the upper step portion (46). Specifically, a hole for inserting the columnar pin (71) is formed in advance on the bottom surface of the upper step (46), and the columnar pin (71) is press-fitted into this hole. That is, the columnar pin (71) constituting the pin shaft portion (70) is fixed to the housing (45), and is in a state in which relative movement with respect to the housing (45) is prohibited. On the other hand, the protruding end portion (upper end portion in FIG. 9) of the columnar pin (71) is fitted in the slide groove (80) of the movable scroll (50).

  In this modification, since the columnar pin (71) constituting the pin shaft portion (70) is provided in the housing (45), the axis of the main shaft portion (21) supported by the housing (45) and the columnar pin The position accuracy of (71) can be secured relatively easily. Therefore, according to this modification, the gap between the movable side wrap (52) and the fixed side wrap (63) can be reliably managed to suppress the leakage of the refrigerant gas from the compression chamber (41). The efficiency of (10) can be improved.

-Modification 3 of Embodiment 1-
In the present embodiment, as shown in FIG. 10, one columnar pin (71) constituting the pin shaft portion (70) may be attached to both the fixed scroll (60) and the housing (45). In this case, the columnar pin (71) is press-fitted into the fixed scroll (60) at the upper end in the figure, and is press-fitted into the housing (45) at the lower end in the figure. The central part of the columnar pin (71) in the axial direction (vertical direction) slides with the side surface of the slide groove (80).

  In this modification, the columnar pin (71) constituting the pin shaft portion (70) has one end supported by the fixed scroll (60) and the other end supported by the housing (45). For this reason, the deformation amount of the columnar pin (71) can be reduced, and uneven wear of the columnar pin (71) and the slide groove (80) due to the deformation of the columnar pin (71) can be suppressed.

-Modification 4 of Embodiment 1
In the present embodiment, as shown in FIG. 11, the center line L ₁ of the slide groove (80) is a straight line orthogonal to both the axis of the eccentric shaft portion (22) and the axis of the columnar pin (71). A predetermined acute angle may be formed.

FIG. 11 corresponds to FIG. 4, where Of is the axial position of the main shaft portion (21), Os is the axial position of the eccentric shaft portion (22), and Op is the pin shaft portion (70). the axial position of the columnar pin (71) which, L ₁ is representative respectively center line in the width direction of the slide groove (80). The straight line perpendicular to both the shaft center of the eccentric shaft portion (22) and the shaft center of the columnar pin (71) indicates the shaft center position Os of the eccentric shaft portion (22) and the shaft center of the columnar pin (71). The line OpOs passes through the position Op. In this modification, the angle formed by the center line L ₁ of the slide groove (80) and the straight line OpOs is less than 90 °.

  According to this modification, the rotation angle of the movable scroll (50) is reduced compared to the case where the center line of the slide groove (80) is orthogonal to the axis of the eccentric shaft portion (22) and the columnar pin (71). It becomes possible. For this reason, the change of the thickness of the movable side wrap (52) and the fixed side wrap (63) due to the rotation of the movable scroll (50) can be reduced, and the movable side wrap (52) and the fixed side wrap (63) ) To ensure the rigidity.

<< Embodiment 2 of the Invention >>
A second embodiment of the present invention will be described. This embodiment is obtained by changing the configuration of the compression mechanism (40) in the first embodiment. Here, the difference from the first embodiment will be described for the scroll compressor (10) of the present embodiment.

  As shown in FIG. 12, in the compression mechanism (40) of the present embodiment, the columnar pin (71) constituting the pin shaft portion (70) is attached to the movable scroll (50), and the slide groove (80) is a fixed scroll. (60) formed.

  First, specific structures of the slide groove (80) and the pin shaft portion (70) will be described with reference to FIG.

  In the movable side end plate portion (51), the columnar pin (71) constituting the pin shaft portion (70) is provided so as to protrude to the front surface side (upper surface side in FIG. 12). Further, in the movable side end plate portion (51), the columnar pin (71) is disposed in the vicinity of the outer peripheral side end portion of the movable side wrap (52). Specifically, the columnar pin (71) is provided at a position that is further forward than the outer peripheral end along the spiral direction of the movable wrap (52).

  The base end portion (lower end portion in FIG. 12) of the columnar pin (71) is embedded in the movable side end plate portion (51). Specifically, a hole for inserting the columnar pin (71) is formed in advance in the movable side end plate portion (51), and the columnar pin (71) is press-fitted into this hole. That is, the columnar pin (71) constituting the pin shaft portion (70) is fixed to the movable side end plate portion (51), and is in a state in which relative movement with respect to the movable scroll (50) is prohibited.

  In the fixed scroll (60), the slide groove (80) is formed at a position facing the columnar pin (71) of the movable scroll (50). The slide groove (80) is a straight concave groove having a constant width, and opens on the lower surface of the edge (62). The slide groove (80) extends substantially in the radial direction of the fixed scroll (60). The projecting end portion (upper end portion in FIG. 12) of the columnar pin (71) is fitted in the slide groove (80). That is, the columnar pin (71) constituting the pin shaft portion (70) is engaged with the slide groove (80).

Next, the arrangement and shape of the slide groove (80) and the pin shaft portion (70) will be described with reference to FIG. FIG. 13 shows the positional relationship between the shaft center of the main shaft portion (21), the eccentric shaft portion (22), and the columnar pin (71) and the slide groove (80) orthogonal to the shaft center of the main shaft portion (21). It is shown on the plane to do. In FIG. 13, Of is the axial center position of the main shaft portion (21), Os is the axial center position of the eccentric shaft portion (22), and Op is the axial center of the columnar pin (71) constituting the pin shaft portion (70). The position L ₁ represents the center line in the width direction of the slide groove (80).

  As described above, the movable scroll (50) revolves around the axis of the main shaft (21). In FIG. 13, the revolution radius of the movable scroll (50) is expressed as the length of the line segment OfOs. Further, the distance between the axial centers of the columnar pin (71) and the eccentric shaft portion (22) is expressed as the length of the line segment OpOs. As shown in FIG. 13, the line segment OpOs is longer than the line segment OfOs. That is, in the fixed scroll (60), the columnar pin (71) constituting the pin shaft portion (70) has a revolving radius of the movable scroll (50) whose distance between the shaft center and the shaft center of the eccentric shaft portion (22) is It is arrange | positioned so that it may become longer.

The columnar pin (71) constituting the pin shaft portion (70) has an outer diameter slightly smaller than the width of the slide groove (80). Therefore, it becomes possible axial position Op of FIG. 13 columnar pin (71) rides on the center line L ₁ of the slide groove (80), the center line axis of the slide groove (80) of the columnar pin (71) Orthogonal to Further, as shown in FIG. 13, on the center line L ₁ of the slide groove (80) is riding a central axial position Of the main shaft portion (21), the axis also slide groove (80 of the main shaft portion (21) ) Perpendicular to the center line. Therefore, the center line of the slide groove (80) is orthogonal to both the axis of the main shaft (21) and the axis of the columnar pin (71) constituting the pin shaft (70). That is, in the fixed scroll (60), the slide groove (80) is formed so that the center line thereof is orthogonal to both the axis of the main shaft portion (21) and the axis of the columnar pin (71).

-Driving action-
In the scroll compressor (10) of the present embodiment, the movable scroll (50) moves in substantially the same manner as in the first embodiment. That is, the movable scroll (50) revolves around the axis of the main shaft (21), and at the same time, rotates within a predetermined angle range around the axis of the eccentric shaft (22). However, in the scroll compressor (10) of this embodiment, the columnar pin (71) attached to the movable scroll (50) is engaged with the slide groove (80) formed in the fixed scroll (60). The columnar pin (71) of the movable scroll (50) is guided by the slide groove (80), and the columnar pin (71) slides on the side surface of the slide groove (80), thereby rotating the movable scroll (50). Is limited.

-Effect of Embodiment 2-
According to the present embodiment, as in the first embodiment, the friction loss is reduced when the rotation of the movable scroll (50) is limited, and the loss caused by the member such as the Oldham ring stirring the lubricating oil. The power loss in the scroll compressor (10) can be reduced.

  Further, according to the present embodiment, since the rotation of the movable scroll (50) is allowed to some extent, the difference in the maximum volume between the A chamber (42) and the B chamber (43) is reduced as in the first embodiment. Therefore, vibration of the scroll compressor (10) can be reduced.

  In the scroll compressor (10) of the present embodiment, since the slide groove (80) is provided in the fixed scroll (60), the positional accuracy of the slide groove (80) and the fixed side wrap (63) is relatively high. It can be secured easily. Therefore, according to this embodiment, the gap between the movable wrap (52) and the fixed wrap (63) can be reliably managed to suppress the leakage of the refrigerant gas from the compression chamber (41). The efficiency of (10) can be improved.

-Modification 1 of Embodiment 2
In this embodiment, as shown in FIG. 14, the slide groove (80) may be formed in the housing (45). Specifically, the slide groove (80) of the present modification is formed in the upper stage portion (46) of the housing (45). The slide groove (80) is a concave groove opened on the upper surface of the bottom portion of the upper step portion (46). In this modification, the columnar pin (71) constituting the pin shaft portion (70) protrudes on the back side (the lower surface side in FIG. 14) of the movable side end plate portion (51). The upper end of the columnar pin (71) is press-fitted into a hole formed in advance in the movable side end plate (51), and the lower end thereof is fitted in the slide groove (80).

  In this modification, since the slide groove (80) is formed in the housing (45), the axial accuracy of the main shaft (21) supported by the housing (45) and the positional accuracy of the slide groove (80) are relatively It can be secured easily. Therefore, according to this modification, the gap between the movable side wrap (52) and the fixed side wrap (63) can be reliably managed to suppress the leakage of the refrigerant gas from the compression chamber (41). The efficiency of (10) can be improved.

-Modification 2 of Embodiment 2
In this embodiment, as shown in FIGS. 15 and 16, the slide groove (80) may be formed in both the fixed scroll (60) and the housing (45). The slide groove (80) formed in the housing (45) is a concave groove that opens on the upper surface of the bottom of the upper step (46). In this modification, the columnar pin (71) constituting the pin shaft portion (70) is not only on the front side (the upper surface side in FIGS. 15 and 16) of the movable side end plate portion (51), but also on the back side (FIG. 15, It protrudes also on the lower surface side in FIG. That is, the columnar pin (71) passes through the movable side end plate portion (51). The columnar pin (71) has an upper end fitted into the slide groove (80) of the fixed scroll (60), and a lower end fitted into the slide groove (80) of the housing (45).

  In this modification, the columnar pin (71) constituting the pin shaft portion (70) has an upper end that slides on the slide groove (80) of the fixed scroll (60) and a lower end that slides on the housing (45). Slides with groove (80). For this reason, the deformation amount of the columnar pin (71) can be reduced, and uneven wear of the columnar pin (71) and the slide groove (80) due to the deformation of the columnar pin (71) can be suppressed.

—Modification 3 of Embodiment 2—
In the present embodiment, as shown in FIG. 17, the center line L ₁ of the slide groove (80) and a straight line orthogonal to both the axis of the main shaft portion (21) and the axis of the columnar pin (71) May have an acute angle.

FIG. 17 corresponds to FIG. 13, where Of is the axial center position of the main shaft portion (21), Os is the axial center position of the eccentric shaft portion (22), and Op is the pin shaft portion (70). the axial position of the columnar pin (71) which, L ₁ is representative respectively center line in the width direction of the slide groove (80). The straight line perpendicular to both the shaft center of the main shaft portion (21) and the shaft center of the columnar pin (71) represents the shaft center position Of of the main shaft portion (21) and the shaft center position Op of the columnar pin (71). It becomes a straight line OpOf passing through. In the present modification, the angle formed by the center line L ₁ of the slide groove (80) and the straight line OpOf is less than 90 °.

  According to this modification, the rotation angle of the movable scroll (50) is reduced as compared with the case where the center line of the slide groove (80) is orthogonal to the axis of the main shaft portion (21) and the columnar pin (71). Is possible. For this reason, the change of the thickness of the movable side wrap (52) and the fixed side wrap (63) due to the rotation of the movable scroll (50) can be reduced, and the movable side wrap (52) and the fixed side wrap (63) ) To ensure the rigidity.

<< Embodiment 3 of the Invention >>
Embodiment 3 of the present invention will be described. In this embodiment, the configuration of the pin shaft portion (70) and the slide groove (80) in the first embodiment is changed. Here, the difference from the first embodiment will be described for the scroll compressor (10) of the present embodiment.

  As shown in FIG. 18, a pair of sliding surfaces (72) is formed on the columnar pin (71) constituting the pin shaft portion (70) of the present embodiment. The sliding surface (72) is a flat surface formed by partially scraping the side surface of the columnar pin (71), and extends from the lower end of the columnar pin (71) to about half of its height. Is formed. The sliding surface (72) is a flat surface parallel to the axis of the columnar pin (71), and is formed one by one at a position facing the axis of the columnar pin (71). Yes.

  In this embodiment, the base end part (upper end part in FIG. 18) of the columnar pin (71) is loosely fitted in the fitting hole (65) formed in the fixed scroll (60). Specifically, the diameter of the fitting hole (65) is slightly larger than the diameter of the base end portion of the columnar pin (71). The columnar pin (71) inserted into the fitting hole (65) is rotatable with respect to the fixed scroll (60).

  In the present embodiment, the slide groove (80) passes through the movable side end plate portion (51) of the movable side wrap (52). The slide groove (80) is formed by cutting out the movable side end plate portion (51) from its outer peripheral surface toward the center. The width of the slide groove (80) is slightly wider than the distance between the slide surfaces (72) of the columnar pin (71). In the slide groove (80), the tip end portion (the lower end portion in FIG. 18) of the columnar pin (71) is fitted. Then, the sliding surface (72) formed at the tip of the columnar pin (71) slides with the side surface of the slide groove (80).

-Driving action-
The operation of the scroll compressor (10) of the present embodiment compressing the refrigerant is the same as that of the first embodiment. Here, the movement of the movable scroll (50) will be described with reference to FIG. Note that “clockwise” and “counterclockwise” used in the description here mean “clockwise” and “counterclockwise” in FIG. 19, respectively.

  FIG. 19 corresponds to FIG. 19A shows a state in which the rotation angle of the drive shaft (20) is 0 ° or 360 °, FIG. 19B shows a state in which the rotation angle of the drive shaft (20) is 90 °, and FIG. C) shows a state where the rotation angle of the drive shaft (20) is 180 °, and FIG. 19 (D) shows a state where the rotation angle of the drive shaft (20) is 270 °.

  When the drive shaft (20) rotates counterclockwise, the movable scroll (50) revolves around the axis of the main shaft (21). Meanwhile, the side surface of the slide groove (80) slides with the side surface of the columnar pin (71), and the rotation of the movable scroll (50) is restricted.

  Specifically, the movable scroll (50) rotates counterclockwise as the rotation angle of the drive shaft (20) increases from 0 °. At that time, as the movable scroll (50) rotates, the pin shaft portion (70) also rotates counterclockwise. Thereafter, the movable scroll (50) rotates clockwise when the rotational angle of the drive shaft (20) reaches a predetermined value. At that time, as the movable scroll (50) rotates, the pin shaft portion (70) also rotates clockwise. Then, when the rotation angle of the drive shaft (20) reaches 180 °, the movable scroll (50) and the columnar pin (71) have the same rotation angle as that when the rotation angle of the drive shaft (20) is 0 °. The rotation angle becomes 0 °.

  When the drive shaft (20) continues to rotate counterclockwise, the rotation angle of the drive shaft (20) eventually becomes 360 ° and returns to the same state as the state where the rotation angle of the drive shaft (20) is 0 ° (FIG. 19A )). Meanwhile, the side surface of the slide groove (80) slides with the side surface of the columnar pin (71), and the rotation of the movable scroll (50) is restricted.

  Specifically, as the rotation angle of the drive shaft (20) increases from 180 °, the movable scroll (50) rotates clockwise. At that time, as the movable scroll (50) rotates, the pin shaft portion (70) also rotates clockwise. Thereafter, the movable scroll (50) rotates counterclockwise when the rotational angle of the drive shaft (20) reaches a predetermined value. At that time, as the movable scroll (50) rotates, the pin shaft portion (70) also rotates counterclockwise. Then, when the rotation angle of the drive shaft (20) reaches 360 °, the movable scroll (50) and the columnar pin (71) have their rotation angle similar to that when the rotation angle of the drive shaft (20) is 0 °. The rotation angle becomes 0 °.

-Effect of Embodiment 3-
According to the present embodiment, in addition to the effects obtained by the first embodiment, the following effects can be obtained.

  In this embodiment, a planar sliding surface (72) is formed on the columnar pin (71) constituting the pin shaft portion (70), and the force for limiting the rotation of the movable scroll (50) is columnar. It acts on the sliding surface (72) of the pin (71). For this reason, the surface pressure acting on the sliding surface (72) of the columnar pin (71) and the side surface of the sliding groove (80) during the revolution of the movable scroll (50) can be reduced, and the columnar pin (71) The lubrication state between the sliding surface (72) and the side surface of the sliding groove (80) can be improved. Therefore, according to the present embodiment, lubrication between the sliding surface (72) of the columnar pin (71) and the side surface of the sliding groove (80) can be reliably performed, and troubles such as seizure and wear occur. The reliability of the scroll compressor (10) can be improved by reducing the possibility.

-Modification 1 of Embodiment 3
In this embodiment, as shown in FIG. 20, the columnar pin (71) constituting the pin shaft portion (70) is attached to the movable scroll (50), and the slide groove (80) is formed in the housing (45). Good.

  Although not shown, the movable scroll (50) of the present modification is formed with a fitting hole for inserting the columnar pin (71). The fitting hole is formed in the movable side end plate part (51), and opens on the back surface (the lower surface in FIG. 20) of the movable side end plate part (51). The columnar pin (71) has a base end portion (upper end portion in FIG. 20) on which the sliding surface (72) is not formed loosely fitted in the fitting hole of the movable side end plate portion (51), so that the movable scroll ( 50) is rotatable.

  The slide groove (80) of the present modification is formed in the upper step (46) of the housing (45). The slide groove (80) is a concave groove opened on the upper surface of the bottom portion of the upper step portion (46). As for the columnar pin (71) which comprises a pin axial part (70), the protrusion part (lower end part in FIG. 20) in which the sliding surface (72) was formed is fitting in the slide groove | channel (80). Then, the sliding surface (72) of the columnar pin (71) slides with the side surface of the sliding groove (80).

  In this modification, the slide groove (80) is formed in the housing (45). However, the slide groove (80) may be formed in the fixed scroll (60) instead of the housing (45). In this case, the slide groove (80) is a concave groove opened on the lower surface of the edge (62) of the fixed scroll (60). Further, the columnar pin (71) constituting the pin shaft portion (70) is provided so as to protrude to the front side of the movable side end plate portion (51).

-Modification 2 of Embodiment 3
In the present embodiment, the sliding surface (72) formed on the columnar pin (71) may be a tapered surface. Specifically, the sliding surface (72) of the columnar pin (71) may have an inclination of 5/1000 or less, preferably about 1/1000 in the sliding direction with the slide groove (80). When the sliding surface (72) of the columnar pin (71) is tapered, a “wedge effect” is obtained by the lubricating oil entering the gap between the sliding surface (72) and the side surface of the slide groove (80). The oil film reaction force in the gap can be positively generated. For this reason, lubrication between the sliding surface (72) of the columnar pin (71) and the side surface of the slide groove (80) can be performed reliably, and the friction loss between the columnar pin (71) and the slide groove (80) can be ensured. Can be more reliably reduced.

-Modification 3 of Embodiment 3
In the present embodiment, the sliding surface may be omitted from the columnar pin (71) constituting the pin shaft portion (70). That is, the columnar pin (71) formed in a simple columnar shape may be rotatably attached to the fixed scroll (60).

  The columnar pin (71) of this modification rotates while sliding with the side surface of the slide groove (80), and the columnar pin (71) and the slide groove are compared with the case where the rotation of the columnar pin (71) is prohibited. The sliding speed with the side surface of (80) decreases. For this reason, it is possible to reliably perform lubrication between the columnar pin (71) and the side surface of the slide groove (80), and the possibility of occurrence of troubles such as seizure and wear can be reduced. Therefore, according to this modification, the reliability of the scroll compressor (10) can be improved.

<< Embodiment 4 of the Invention >>
Embodiment 4 of the present invention will be described. This embodiment is obtained by changing the configuration of the pin shaft portion (70) in the first embodiment. Here, the difference from the first embodiment will be described for the scroll compressor (10) of the present embodiment.

  As shown in FIG. 21, the pin shaft portion (70) of the present embodiment is constituted by a main body member (73) and a bush member (74).

  The main body member (73) is formed in a cylindrical shape. The base end part (upper end part in FIG. 21) of the main body member (73) is embedded in the edge part (62) of the fixed scroll (60). Specifically, a hole for inserting the main body member (73) is formed in advance in the edge portion (62), and the main body member (73) is press-fitted into the hole. That is, the main body member (73) of the pin shaft portion (70) is fixed to the fixed scroll (60), and the relative movement with respect to the fixed scroll (60) is prohibited. In the pin shaft portion (70) of the present embodiment, the shaft center of the main body member (73) is the shaft center of the pin shaft portion (70).

  The bush member (74) has a shape such that a relatively short square column is chamfered along four sides in the axial direction. That is, the cross section of the bush member (74) has an octagonal shape in which opposite sides are parallel to each other. In the bush member (74), a pair of side surfaces opposed to each other among the side surfaces form a sliding surface (75).

  The bush member (74) is formed with a through hole (76) that passes through the bush member (74) in the height direction (vertical direction in FIG. 21). The through hole (76) is a hole having a circular cross section formed coaxially with the bush member (74). The protruding end portion (lower end portion in FIG. 21) of the main body member (73) is loosely fitted into the through hole (76) of the bush member (74). That is, the diameter of the through hole (76) is slightly larger than the outer diameter of the main body member (73). The bush member (74) is rotatable with respect to the main body member (73) by inserting the main body member (73) into the through hole (76).

  In the present embodiment, the width of the slide groove (80) formed in the movable side end plate portion (51) is slightly wider than the distance between the slide surfaces (75) of the bush member (74). In the pin shaft portion (70) of the present embodiment, the bush member (74) is fitted into the slide groove (80), and the sliding surface (75) of the bush member (74) is the side surface of the slide groove (80). And slide.

-Driving action-
The operation of the scroll compressor (10) of the present embodiment compressing the refrigerant is the same as that of the first embodiment. During the revolution of the movable scroll (50), the bush member (74) of the pin shaft portion (70) slides on the side surface of the slide groove (80), thereby limiting the rotation of the movable scroll (50). At this time, as the movable scroll (50) rotates, the bush member (74) rotates about the axis of the main body member (73).

-Effect of Embodiment 4-
According to the present embodiment, in addition to the effects obtained by the first embodiment, the following effects can be obtained.

  First, in the present embodiment, a bush member (74) separate from the main body member (73) is slid on the side surface of the slide groove (80). Therefore, according to the present embodiment, the main body member (73) and the bush member (74) can be made of different materials, and the bush member (74) is made of a material having excellent sliding performance and lubrication performance. By doing so, it becomes possible to improve the reliability.

  Further, in the present embodiment, a planar sliding surface (75) is formed on the bush member (74), and the force for limiting the rotation of the movable scroll is the sliding surface (75) of the bush member (74). ). Therefore, the surface pressure acting on the side surfaces of the bush member (74) and the slide groove (80) of the pin shaft portion (70) during the revolution of the movable scroll can be reduced, and the sliding surface of the bush member (74) The lubrication state between (75) and the side surface of the slide groove (80) can be improved. Therefore, according to this embodiment, lubrication between the sliding surface (75) of the bush member (74) and the side surface of the sliding groove (80) can be reliably performed, and troubles such as seizure and wear occur. The reliability of the scroll compressor (10) can be improved by reducing the possibility.

-Modification 1 of Embodiment 4
In this embodiment, as shown in FIG. 22, the pin shaft portion (70) may be provided in the movable scroll (50), and the slide groove (80) may be formed in the fixed scroll (60).

  In this modification, the body member (73) of the pin shaft portion (70) is press-fitted into a hole formed in advance in the movable side end plate portion (51), and the front side of the movable side end plate portion (51) (in FIG. 22). It protrudes to the upper surface side. A portion of the main body member (73) protruding to the front side of the movable side end plate portion (51) is inserted into the through hole (76) of the bush member (74). Also in this modified example, the bush member (74) is rotatable with respect to the main body member (73).

  The slide groove (80) of this modification is formed on the edge (62) of the fixed scroll (60). The slide groove (80) is a concave groove opened on the lower surface of the edge (62). The bush member (74) of the pin shaft portion (70) is fitted in the slide groove (80), and the sliding surface (75) of the bush member (74) slides with the side surface of the slide groove (80).

  In this modification, the slide groove (80) is formed in the fixed scroll (60), but the slide groove (80) may be formed in the housing (45) instead of the fixed scroll (60). In this case, the slide groove (80) is a concave groove that opens on the upper surface of the bottom of the upper step (46) of the housing (45). Further, the main body member (73) of the pin shaft portion (70) is provided so as to protrude to the back side of the movable side end plate portion (51), and the lower end portion of the main body member (73) is the bush member (74). It is inserted into the through hole (76).

-Modification 2 of Embodiment 4
In the present embodiment, the sliding surface (75) formed on the bush member (74) may be a tapered surface. Specifically, the sliding surface (75) of the bush member (74) may have an inclination of 5/1000 or less, preferably about 1/1000 in the sliding direction with the slide groove (80). When the sliding surface (75) of the bush member (74) is tapered, a “wedge effect” is obtained by the lubricating oil entering the gap between the sliding surface (75) and the side surface of the slide groove (80). The oil film reaction force in the gap can be positively generated. For this reason, the lubrication between the sliding surface (75) of the bush member (74) and the side surface of the slide groove (80) can be reliably performed, and the friction loss between the bush member (74) and the slide groove (80) is ensured. Can be more reliably reduced.

-Modification 3 of Embodiment 4
In the present embodiment, the sliding surface may be omitted from the bush member (74) of the pin shaft portion (70). That is, the bush member (74) may have a simple cylindrical shape, and the cylindrical bush member (74) may be rotatably attached to the main body member (73).

  The bush member (74) of this modification rotates while sliding with the side surface of the slide groove (80), and the bush member (74) and the slide groove are compared with the case where the rotation of the bush member (74) is prohibited. The sliding speed with the side surface of (80) decreases. For this reason, it is possible to reliably perform lubrication between the bush member (74) and the side surface of the slide groove (80), and the possibility of occurrence of troubles such as seizure and wear can be reduced. Therefore, according to this modification, the reliability of the scroll compressor (10) can be improved.

-Modification 4 of Embodiment 4
In this embodiment, the bush member (74) may be fixed to the main body member (73), and the main body member (73) may be loosely fitted into a hole formed in the fixed scroll (60). That is, in this modification, the main body member (73) is press-fitted into the through hole (76) of the bush member (74), and the movement of the bush member (74) with respect to the main body member (73) is prohibited. The main body member (73) to which the bush member (74) is attached is rotatably attached to the fixed scroll (60).

  When the pin shaft portion (70) is provided on the movable scroll (50) as in the first modification, the body member (73) of the pin shaft portion (70) is fixed to the movable side end plate portion (51), The bush member (74) may be rotatably attached to the main body member (73) fixed to the movable side end plate portion (51).

<< Embodiment 5 of the Invention >>
Embodiment 5 of the present invention will be described. In this embodiment, the configuration of the pin shaft portion (70) and the slide groove (80) in the first embodiment is changed. Here, the difference from the first embodiment will be described for the scroll compressor (10) of the present embodiment.

  As shown in FIG.23 and FIG.24, the pin axial part (70) of this embodiment is comprised by one pin member (90). The pin member (90) includes a base end portion (91) formed in a columnar shape, and a projecting portion (92) projecting in the axial direction from one end of the base end portion (91). The entire shape of the pin member (90) is such that a part of the cylinder is cut out.

  The base end portion (91) has a height substantially equal to the thickness of the edge portion (62) of the fixed scroll (60), and is press-fitted into a hole formed in the edge portion (62) in advance. As shown in FIG. 25, the end surface of the projecting portion (92) (that is, a cross section orthogonal to the central axis of the pin member (90)) is composed of an arc having a central angle larger than 180 ° and a chord of the arc. It has a shape. The side surface of the projecting portion (92) includes an arc side surface (93) that is an arc surface and a flat side surface (94) that is a plane. The diameter of the pin member (90) is about twice the diameter of the columnar pin (71) in the first embodiment.

  As shown in FIG. 25, in the projecting portion (92) of the pin member (90), a part of the arc side surface (93) near the flat side surface (94) (the hatched portion in FIG. 25) is the sliding surface. The sliding surface (95) is in sliding contact with the wall surface of the sliding groove (80). Specifically, in the arc side surface (93) of the protrusion (92), a region where the central angle near the flat side surface (94) is 2θ and the region is 180 ° across the center of curvature of the arc side surface (93). The area located on the opposite side constitutes the sliding surface (95). The positions of the pin member (90) and the slide groove (80) are preferably set so that θ, which is half the central angle of the sliding surface (95), is 5 ° or less.

  The pin member (90) is fixed to the edge (62) of the fixed scroll (60) with the flat side surface (94) facing the center side of the fixed scroll (60). As shown in FIG. 27, the flat side surface (94) of the pin member (90) has an axial position Op of the pin member (90) and an axial position Of of the main shaft portion (21) of the drive shaft (20). It is almost orthogonal to the passing line OpOf. Thus, the pin member (90) constituting the pin shaft portion (70) has a shape in which a portion closer to the drive shaft (20) than the sliding surface (95) is cut out.

  As shown in FIGS. 23 and 26, the slide groove (80) penetrates the movable side end plate portion (51) in the thickness direction. The slide groove (80) extends linearly from the outer peripheral surface of the movable side end plate part (51) in the radial direction of the movable side end plate part (51). As shown in FIG. 27, the extending direction of the slide groove (80) is a straight line passing through the axial center position Op of the pin member (90) and the axial center position Os of the eccentric shaft part (22) of the drive shaft (20). It almost coincides with OpOs.

  The width of the slide groove (80) is slightly wider than the diameter of the pin member (90). The wall surface located on the innermost side of the slide groove (80) (that is, the wall surface near the movable side wrap (52)) constitutes the inner wall surface (81). This back side wall surface (81) is a flat surface facing the flat side surface (94) of the pin member (90). Further, as shown in FIG. 26, the distance X from the back side wall surface (81) of the slide groove (80) to the outer peripheral surface of the movable side wrap (52) is twice the revolution radius Ror of the movable scroll (50), That is, it is longer than 2Ror. The distance X is desirably 1 to 2 mm or longer than 2Ror.

-Driving action-
In the scroll compressor (10) of the present embodiment, the movable scroll (50) moves in substantially the same manner as in the first embodiment.

  That is, the pin member (90) attached to the fixed scroll (60) engages with the slide groove (80) formed in the movable scroll (50), and the movable scroll (50) is guided by the pin member (90). This limits the rotation of the movable scroll (50). As shown in FIG. 27, the movable scroll (50) revolves around the axis of the main shaft (21), and at the same time, within an angle range of ± θ around the axis of the eccentric shaft (22). Rotate at.

  During operation of the scroll compressor (10), only the sliding surface (95) which is a part of the arc side surface (93) of the projecting portion (92) of the pin member (90) is connected to the wall surface of the sliding groove (80). Slide. That is, the portion of the arc side surface (93) other than the sliding surface (95) does not slide with the wall surface of the sliding groove (80).

-Effect of Embodiment 5-
According to the present embodiment, in addition to the effects obtained by the first embodiment, the following effects can be obtained.

  Here, the lubrication conditions when the sliding surface (95) of the pin member (90) and the wall surface of the sliding groove (80) slide are such that the radius of curvature of the sliding surface (95) of the pin member (90) is The smaller it is, the harder it becomes. Therefore, in order to reliably perform lubrication in this portion and avoid troubles such as seizure, it is desirable to increase the radius of curvature of the sliding surface (95) of the pin member (90) as much as possible.

  For example, FIG. 28 shows a comparison between the case where the diameter of the pin member (90) (that is, the radius of curvature of the sliding surface (95)) is 10 mm and 20 mm. Specifically, assuming the material of the pin member (90) and the movable scroll (50) and the magnitude of the load acting on the pin member (90), Hertz pressure, which is the surface pressure considering the elastic deformation of the member Decreases by about 28%, while the EHL oil film thickness, which is the oil film thickness calculated based on the elastohydrodynamic lubrication theory (so-called EHL (elastohydrodynamic lubrication) theory), increases by about 34%.

  Thus, in order to improve the lubrication state between the sliding surface (95) of the pin member (90) and the wall surface of the sliding groove (80), it is necessary to increase the radius of curvature of the sliding surface (95). desirable. However, if the pin shaft (70) is made of a simple cylindrical member and the curvature radius of the sliding surface (95) is increased by making the member thicker, the movable wrap (52) and the fixed wrap ( 63) may interfere with the pin shaft (70).

  On the other hand, in the pin member (90) of the present embodiment, the shape of the protrusion (92) is such that a portion near the movable side wrap (52) is cut out from the cylinder. Therefore, according to the present embodiment, the fixed side wrap (63) meshing with the movable side wrap (52) is prevented from interfering with the pin member (90), and the sliding surface (95) of the pin member (90) is avoided. ) Can be increased to improve the lubrication state.

  In the present embodiment, the distance X from the back side wall surface (81) of the slide groove (80) to the outer surface of the movable wrap (52) is longer than twice the revolution radius Ror of the movable scroll (50). is doing. On the other hand, the distance between the movable side wrap (52) and the fixed side wrap (63) is at most twice the revolution radius Ror of the movable scroll (50). For this reason, in this embodiment, during the revolution of the movable side wrap (52), the inner side surface of the fixed side wrap (63) does not reach the outer peripheral side of the rear side wall surface (81) of the slide groove (80). (See FIG. 26).

  Here, in the scroll compressor (10), the movable side wrap (52) and the fixed side wrap (63) are engaged with each other to form a compression chamber (41). During the revolution of the movable scroll (50), when the inner surface of the fixed wrap (63) reaches the outer peripheral side of the rear wall surface (81) of the slide groove (80), the outer surface of the movable wrap (52) The compression chamber (41) sandwiched between the inner side surfaces of the stationary wrap (63) communicates with the slide groove (80), and the refrigerant in the compression chamber (41) leaks into the slide groove (80).

  On the other hand, in the compression mechanism (40) of the present embodiment, the inner side surface of the fixed wrap (63) does not reach the outer side than the back side wall surface (81) of the slide groove (80). Therefore, according to this embodiment, leakage of the refrigerant from the compression chamber (41) to the slide groove (80) can be prevented, and a decrease in efficiency of the scroll compressor (10) can be avoided.

-Modification 1 of Embodiment 5
In the present embodiment, the slide groove (80) formed in the movable scroll (50) may be formed in a concave groove shape. In this modification, the slide groove (80) is a concave groove opened on the surface on the movable side wrap (52) side (that is, the upper surface in FIG. 23) of the movable side end plate portion (51). Further, the height of the protrusion (92) in the pin member (90) is slightly shorter than the depth of the slide groove (80).

-Modification 2 of Embodiment 5
In this embodiment, as shown in FIG. 29, the pin member (90) constituting the pin shaft portion (70) is attached to the movable scroll (50), and the slide groove (80) is formed in the fixed scroll (60). Also good.

  The movable scroll (50) of this modification is provided with an attachment hole for attaching the pin member (90). This attachment hole penetrates the movable side end plate portion (51) in the thickness direction. The pin member (90) has a cylindrical base end portion (91) press-fitted into the mounting hole of the movable side end plate portion (51), and the protruding end portion protrudes to the front side of the movable side end plate portion (51). It has become.

  The slide groove (80) of this modification is formed on the edge (62) of the fixed scroll (60). The slide groove (80) is a concave groove opened on the lower surface of the edge (62). The protrusion (92) of the pin member (90) is inserted into the slide groove (80). Then, the sliding surface (95) of the pin member (90) slides with the wall surface of the sliding groove (80).

  In this modification, the slide groove (80) is formed in the fixed scroll (60), but the slide groove (80) may be formed in the housing (45) instead of the fixed scroll (60). In this case, the slide groove (80) is a concave groove that opens on the upper surface of the bottom of the upper step (46) of the housing (45). Moreover, the columnar pin (71) which comprises a pin axial part (70) is provided so that it may protrude to the back side of a movable side end plate part (51).

<< Other Embodiments >>
About each said embodiment, it is good also as following structures.

-First modification-
In each of the above embodiments, as shown in FIG. 30, the movable side wrap (52) may be formed in a spiral wall shape having a constant thickness. In this modification, the movable wrap (52) is formed in the same shape as a general scroll compressor in which the rotation of the movable scroll is completely prohibited. In this modification, the shape of the fixed side wrap (63) is adapted to the movement of the movable scroll (50) by changing the thickness of the fixed side wrap (63).

  Specifically, the inner side surface and the outer side surface of the fixed side wrap (63), that is, all the wrap surfaces of the fixed side wrap (63) have a shape different from that in a general scroll compressor. In the fixed side wrap (63) of this modification, the portion where the thickness is gradually increased and the portion where the thickness is gradually decreased are alternately formed from the inner peripheral side end portion toward the outer peripheral side end portion. The fixed side wrap (63) has an inner side surface as an envelope surface of the outer side surface of the movable side wrap (52), and an outer side surface thereof as an envelope surface of the inner side surface of the movable side wrap (52).

  In this modification, the movable wrap (52) has the same shape as that of a general scroll compressor in which the rotation of the movable scroll is completely prohibited. For this reason, the movable scroll of a general scroll type fluid machine can be used, and the manufacturing cost of the scroll compressor (10) can be reduced.

-Second modification-
In each of the above embodiments, as shown in FIG. 31, the fixed wrap (63) may be formed in a spiral wall shape with a constant thickness. In this modification, the fixed side wrap (63) is formed in the same shape as a general scroll compressor in which the rotation of the movable scroll is completely prohibited. In this modification, the shape of the movable wrap (52) is adapted to the movement of the movable scroll (50) by changing the thickness of the movable wrap (52).

  Specifically, the inner side surface and the outer side surface of the movable side wrap (52), that is, all the wrap surfaces of the movable side wrap (52) have a shape different from that of a general scroll compressor. In the movable side wrap (52) of this modification, the portion where the thickness gradually increases and the portion where the thickness gradually decreases are formed alternately from the inner peripheral side end portion toward the outer peripheral side end portion. The fixed side wrap (63) has an inner side surface as an envelope surface of the outer side surface of the movable side wrap (52), and an outer side surface thereof as an envelope surface of the inner side surface of the movable side wrap (52).

  In this modification, the fixed side wrap (63) has the same shape as that of a general scroll compressor in which the rotation of the movable scroll is completely prohibited. For this reason, the fixed scroll of a general scroll type fluid machine can be used, and the manufacturing cost of the scroll compressor (10) can be reduced.

-Third modification-
In each of the above embodiments, as shown in FIG. 32, the inner side surfaces of the movable side wrap (52) and the fixed side wrap (63) are shaped to draw a simple involute curve, while the movable side wrap (52) and the fixed side wrap (63) are fixed. The outer surface of the side wrap (63) has a shape different from the shape that draws a simple involute curve, thereby adapting the shapes of the movable wrap (52) and the fixed wrap (63) to the movement of the movable scroll (50). Also good.

  In the movable side wrap (52) of this modification, the portion where the thickness gradually increases and the portion where the thickness gradually decreases are formed alternately from the inner peripheral side end portion toward the outer peripheral side end portion. Moreover, in the fixed side wrap (63) of this modification, the portion where the thickness gradually increases and the portion where the thickness gradually decreases are alternately formed from the inner peripheral side end portion toward the outer peripheral side end portion. The fixed side wrap (63) has an inner side surface as an envelope surface of the outer side surface of the movable side wrap (52), and an outer side surface thereof as an envelope surface of the inner side surface of the movable side wrap (52).

-Fourth modification-
In each of the above embodiments, as shown in FIG. 33, the outer side surfaces of the movable side wrap (52) and the fixed side wrap (63) are shaped to draw a simple involute curve, while the movable side wrap (52) and the fixed side wrap (63) are fixed. The inner side surface of the side wrap (63) is different from the shape that draws a simple involute curve, so that the shapes of the movable side wrap (52) and fixed side wrap (63) are adapted to the movement of the movable scroll (50). Also good.

  In the movable side wrap (52) of this modification, the portion where the thickness gradually increases and the portion where the thickness gradually decreases are formed alternately from the inner peripheral side end portion toward the outer peripheral side end portion. Moreover, in the fixed side wrap (63) of this modification, the portion where the thickness gradually increases and the portion where the thickness gradually decreases are alternately formed from the inner peripheral side end portion toward the outer peripheral side end portion. The fixed side wrap (63) has an inner side surface as an envelope surface of the outer side surface of the movable side wrap (52), and an outer side surface thereof as an envelope surface of the inner side surface of the movable side wrap (52).

-5th modification-
In each of the above-described embodiments, as shown in FIG. 34, an eccentric cylindrical portion (23) is provided on the drive shaft (20) instead of the eccentric shaft portion (22), and a protruding shaft instead of the protruding cylindrical portion (53). The part (54) may be provided on the movable scroll (50).

  Specifically, in the drive shaft (20) of the present modification, an eccentric cylinder portion (23) is formed at the upper end of the main shaft portion (21). This eccentric cylinder part (23) is formed in the cylindrical shape which the upper end surface opened. The shaft center of the eccentric tube portion (23) is eccentric with respect to the shaft center of the main shaft portion (21). In this modification, this eccentric cylinder part (23) comprises the eccentric part. On the other hand, in the movable scroll (50) of the present modification, the protruding shaft portion (54) protrudes from the back surface of the movable side end plate portion (51). The protruding shaft portion (54) is formed in a cylindrical shape and is inserted from above into the eccentric tube portion (23) of the drive shaft (20).

-Sixth Modification-
In each of the above embodiments, the fixed scroll (60) fixed to the casing (11) is a non-orbiting scroll. However, this non-orbiting scroll needs to be a member that is fixed to the casing (11) and does not move at all. For example, a member that can move in the axial direction of the drive shaft (20) (vertical direction in FIG. 1) may be used.

  Generally, some scroll compressors (10) have a variable capacity by displacing a non-orbiting scroll meshing with the movable scroll (50) in the axial direction of the drive shaft (20). In this type of scroll compressor (10), the duty ratio between the time during which the non-orbiting scroll is pressed against the movable scroll (50) and the time during which the non-orbiting scroll is separated from the movable scroll (50) is adjusted. The amount of refrigerant discharged from the scroll compressor (10) is changed.

  Specifically, in a state where the non-orbiting scroll is pressed toward the movable scroll (50), the compression of the refrigerant is performed by the compression mechanism (40), and the compressed refrigerant is discharged from the compression mechanism (40). On the other hand, in a state where the non-orbiting scroll is separated from the movable scroll (50), the non-orbiting scroll is placed between the wrap tip of the non-orbiting scroll and the end plate (51) of the movable scroll (50), or A gap is formed between the end plate portion of the non-orbiting scroll. For this reason, even if the movable scroll (50) revolves in this state, the refrigerant is not compressed by the compression mechanism (40), and the refrigerant is not discharged from the compression mechanism (40). Therefore, if the ratio of the time when the non-orbiting scroll is pressed against the movable scroll (50) to the time when it is separated from the movable scroll (50) is changed, the amount of refrigerant discharged from the compression mechanism (40) is accordingly increased. Will change.

  In this type of scroll compressor (10), the amount of movement of the non-orbiting scroll is at most several millimeters. Therefore, if the pin shaft portion (70) is made longer by the amount of movement of the non-orbiting scroll, the pin shaft portion (70) is kept engaged with the slide groove (80) even if the non-orbiting scroll is displaced. It is.

-Seventh modification-
In each of the above embodiments, the pin shaft portion (70) may be made of a material having higher strength than the material of the member in which the slide groove (80) is formed.

  Specifically, in the first embodiment, the material of the columnar pin (71) constituting the pin shaft portion (70) is made of a material having higher strength than the material of the movable scroll (50) in which the slide groove (80) is formed. It is good. In the second embodiment, the material of the columnar pin (71) that constitutes the pin shaft portion (70) may be a material that is stronger than the material of the fixed scroll (60) in which the slide groove (80) is formed. Good. In the fifth embodiment, the material of the pin member (90) constituting the pin shaft portion (70) may be made of a material having higher strength than the material of the movable scroll (50) in which the slide groove (80) is formed. Good. In the second modification of the fifth embodiment, the material of the pin member (90) constituting the pin shaft portion (70) is higher in strength than the material of the fixed scroll (60) in which the slide groove (80) is formed. A good material may be used.

  For example, when the material of the member in which the slide groove (80) is formed (that is, the movable scroll (50) or the fixed scroll (60)) is FC250, SKH51 is used as the material of the pin shaft portion (70). Good.

-Eighth Modification-
In each of the above embodiments, a resin film that functions as a solid lubricant may be formed on the sliding surface of the member in which the slide groove (80) is formed and the pin shaft portion (70). Examples of this type of resin coating include those composed of a fluororesin such as polytetrafluoroethylene (PTFE) with a very low friction coefficient and a binder.

  Specifically, in Embodiment 1 described above, either or both of the columnar pin (71) constituting the pin shaft portion (70) and the wall surface of the slide groove (80) in the movable scroll (50) are lubricated. A resin film may be formed. In Embodiment 2, the resin film for lubrication is provided on one or both of the columnar pin (71) constituting the pin shaft portion (70) and the wall surface of the slide groove (80) in the fixed scroll (60). May be formed. In the fifth embodiment, the resin film for lubrication is provided on one or both of the pin member (90) constituting the pin shaft portion (70) and the wall surface of the slide groove (80) in the movable scroll (50). May be formed. In the second modification of the fifth embodiment, either one or both of the pin member (90) constituting the pin shaft portion (70) and the wall surface of the slide groove (80) in the fixed scroll (60) are lubricated. A resin film may be formed.

-Ninth Modification-
Each of the above embodiments is a scroll compressor configured by the scroll type fluid machine according to the present invention, but the application of the scroll type fluid machine according to the present invention is not limited to the compressor, and the present invention. You may comprise a scroll expander by the scroll type fluid machine concerning.

  As described above, the present invention is useful for a scroll type fluid machine.

It is a longitudinal cross-sectional view of the scroll compressor in Embodiment 1. It is the perspective view which looked at the fixed scroll and movable scroll in Embodiment 1 from diagonally downward. It is the perspective view which looked at the fixed scroll, movable scroll, and housing in Embodiment 1 from diagonally upward. 2 is a schematic configuration diagram of a compression mechanism in Embodiment 1. FIG. FIG. 3 is a main part cross-sectional view showing a cross section of the compression mechanism in the first embodiment. FIG. 3 is a schematic configuration diagram of a compression mechanism showing the movement of the movable scroll in the first embodiment. (A) is a schematic block diagram of the compression mechanism in Embodiment 1, (B) is a schematic block diagram of the conventional scroll compressor. It is the perspective view which looked at the fixed scroll and the movable scroll in the modification 1 of Embodiment 1 from diagonally downward. It is the perspective view which looked at the movable scroll and the housing in the modification 2 of Embodiment 1 from diagonally upward. It is the perspective view which looked at the fixed scroll, the movable scroll, and the housing in the modification 3 of Embodiment 1 from diagonally upward. It is a schematic block diagram of the compression mechanism in the modification 4 of Embodiment 1. FIG. It is the perspective view which looked at the fixed scroll and movable scroll in Embodiment 2 from diagonally downward. It is a schematic block diagram of the compression mechanism in Embodiment 2. It is the perspective view which looked at the movable scroll and the housing in the modification 1 of Embodiment 2 from diagonally upward. It is the perspective view which looked at the fixed scroll, the movable scroll, and the housing in the modification 2 of Embodiment 2 from diagonally downward. It is the perspective view which looked at the movable scroll and the housing in the modification 2 of Embodiment 2 from diagonally upward. It is a schematic block diagram of the compression mechanism in the modification 3 of Embodiment 2. FIG. It is the perspective view which looked at the fixed scroll and movable scroll in Embodiment 3 from diagonally downward. FIG. 9 is a schematic configuration diagram of a compression mechanism showing the movement of a movable scroll in Embodiment 3. It is the perspective view which looked at the movable scroll and the housing in the modification 1 of Embodiment 3 from diagonally upward. It is the perspective view which looked at the fixed scroll and movable scroll in Embodiment 4 from the slanting lower part. It is the perspective view which looked at the fixed scroll and the movable scroll in the modification 1 of Embodiment 4 from diagonally downward. It is the perspective view which looked at the fixed scroll and movable scroll in Embodiment 5 from diagonally downward. It is the perspective view which looked at the pin member in Embodiment 5 from diagonally downward. FIG. 10 is an enlarged view of a main part of a compression mechanism in a fifth embodiment. FIG. 10 is an enlarged view of a main part of a compression mechanism in a fifth embodiment. FIG. 10 is a schematic configuration diagram of a compression mechanism showing the movement of a movable scroll in a fifth embodiment. It is a table | surface which shows the trial calculation value of the Hertz pressure and the EHL oil film thickness in the case where the diameter of a pin member is 10 mm, and 20 mm. It is the perspective view which looked at the fixed scroll and movable scroll in the modification 2 of Embodiment 5 from diagonally downward. It is principal part sectional drawing which shows the cross section of the compression mechanism in the 1st modification of other embodiment. It is principal part sectional drawing which shows the cross section of the compression mechanism in the 2nd modification of other embodiment. It is principal part sectional drawing which shows the cross section of the compression mechanism in the 3rd modification of other embodiment. It is principal part sectional drawing which shows the cross section of the compression mechanism in the 4th modification of other embodiment. It is a longitudinal cross-sectional view of the scroll compressor in the 5th modification of other embodiment.

Explanation of symbols

10 Scroll compressor (scroll type fluid machine)
20 Drive shaft (rotary shaft, crank)
22 Eccentric shaft (eccentric part, eccentric pin)
23 Eccentric cylinder part (eccentric part)
45 Housing (housing member)
48 Lower part (bearing)
50 Movable scroll (orbiting scroll)
51 Movable end panel (swivel end panel)
52 Movable wrap (swivel wrap)
60 Fixed scroll (non-orbiting scroll)
63 Fixed wrap (non-swivel wrap)
69 Fixed side member
70 Pin shaft
71 Columnar pin
72 Sliding surface
73 Body material
74 Bushing member
75 Sliding surface
80 Slide groove
90 pin member
95 Sliding surface

Claims (64)

A orbiting scroll (50), a non-orbiting member (69) comprising at least a non-orbiting scroll (60), and a rotating shaft (20);
The rotating shaft (20) is formed with an eccentric portion (22, 23) eccentric to the rotating shaft, and the orbiting scroll (50) engaged with the eccentric portion (22, 23) is connected to the rotating shaft (20). 20) a scroll-type fluid machine that revolves around the rotation axis,
A pin shaft portion (70) attached to the non-revolving member (69) is provided, and a distance from an axis center of the pin shaft portion (70) to an axis center of the rotating shaft (20) is the rotation scroll (50). While set longer than the revolution radius,
The orbiting scroll (50) has a slide groove (80) that engages with the pin shaft (70).
A scroll type fluid machine in which rotation of the orbiting scroll (50) is restricted by sliding of a wall surface of the slide groove (80) and the pin shaft portion (70) during revolution of the orbiting scroll (50). A orbiting scroll (50), a non-orbiting member (69) comprising at least a non-orbiting scroll (60), and a rotating shaft (20);
The rotating shaft (20) is formed with an eccentric portion (22, 23) eccentric to the rotating shaft, and the orbiting scroll (50) engaged with the eccentric portion (22, 23) is connected to the rotating shaft (20). 20) a scroll-type fluid machine that revolves around the rotation axis,
A pin shaft portion (70) attached to the orbiting scroll (50) is provided, and the distance from the axis of the pin shaft portion (70) to the axis of the eccentric portion (22, 23) is the orbiting scroll (50) While it is set longer than the revolution radius of
The non-rotating member (69) is formed with a slide groove (80) that engages with the pin shaft portion (70),
A scroll type fluid machine in which rotation of the orbiting scroll (50) is restricted by sliding of the wall surface of the slide groove (80) and the pin shaft portion (70) during revolution of the orbiting scroll (50). A orbiting scroll (50), a non-orbiting scroll (60), a rotating shaft (20), and a housing member (45) provided with a bearing (48) for supporting the rotating shaft (20),
The rotating shaft (20) is formed with an eccentric portion (22, 23) eccentric to the rotating shaft, and the orbiting scroll (50) engaged with the eccentric portion (22, 23) is connected to the rotating shaft (20). 20) a scroll-type fluid machine that revolves around the rotation axis,
The non-orbiting scroll (60) and the housing member (45) constitute a non-orbiting member (69),
A pin shaft portion (70) attached to one or both of the non-turning scroll (60) and the housing member (45) constituting the non-turning member (69) is provided. While the distance to the axis of the rotating shaft (20) is set longer than the revolution radius of the orbiting scroll (50),
The orbiting scroll (50) has a slide groove (80) that engages with the pin shaft (70).
A scroll type fluid machine in which rotation of the orbiting scroll (50) is restricted by sliding of a wall surface of the slide groove (80) and the pin shaft portion (70) during revolution of the orbiting scroll (50). A orbiting scroll (50), a non-orbiting scroll (60), a rotating shaft (20), and a housing member (45) provided with a bearing (48) for supporting the rotating shaft (20),
The rotating shaft (20) is formed with an eccentric portion (22, 23) eccentric to the rotating shaft, and the orbiting scroll (50) engaged with the eccentric portion (22, 23) is connected to the rotating shaft (20). 20) a scroll-type fluid machine that revolves around the rotation axis,
The non-orbiting scroll (60) and the housing member (45) constitute a non-orbiting member (69),
A pin shaft portion (70) attached to the orbiting scroll (50) is provided, and the distance from the axis of the pin shaft portion (70) to the axis of the eccentric portion (22, 23) is the orbiting scroll (50) While it is set longer than the revolution radius of
One or both of the non-orbiting scroll (60) and the housing member (45) constituting the non-orbiting member (69) is formed with a slide groove (80) that engages with the pin shaft portion (70),
A scroll type fluid machine in which rotation of the orbiting scroll (50) is restricted by sliding of the wall surface of the slide groove (80) and the pin shaft portion (70) during revolution of the orbiting scroll (50). The scroll type fluid machine according to claim 1 or 3,
The slide groove (80) is formed in a straight line,
A scroll type fluid machine in which the center line of the slide groove (80) is orthogonal to both the axis of the pin shaft (70) and the axis of the eccentric (22, 23). The scroll type fluid machine according to claim 1 or 3,
The slide groove (80) is formed in a straight line,
A scroll type in which the center line of the slide groove (80) has an acute angle with a straight line perpendicular to both the axis of the pin shaft (70) and the axis of the eccentric (22, 23) Fluid machinery. The scroll type fluid machine according to claim 2 or 4,
The slide groove (80) is formed in a straight line,
A scroll type fluid machine in which the center line of the slide groove (80) is orthogonal to both the axis of the pin shaft (70) and the axis of the rotary shaft (20). The scroll type fluid machine according to claim 2 or 4,
The slide groove (80) is formed in a straight line,
A scroll fluid machine in which the center line of the slide groove (80) has an acute angle formed by a straight line perpendicular to both the axis of the pin shaft portion (70) and the axis of the rotary shaft (20). The scroll type fluid machine according to claim 1,
A housing member (45) provided with a bearing (48) for supporting the rotating shaft (20) is provided, and the housing member (45) constitutes the non-orbiting member (69) together with the non-orbiting scroll (60). on the other hand,
The scroll type fluid machine in which the pin shaft portion (70) is attached to one or both of the housing member (45) and the non-orbiting scroll (60). The scroll type fluid machine according to claim 1 or 3,
The orbiting scroll (50) includes an orbiting end plate portion (51) formed in a flat plate shape, and a spiral orbiting wrap (52) provided upright on the orbiting end plate portion (51).
The scroll-type fluid machine, wherein the slide groove (80) is a concave groove opened on the surface of the revolving end plate portion (51). The scroll type fluid machine according to claim 1 or 3,
The orbiting scroll (50) includes an orbiting end plate portion (51) formed in a flat plate shape, and a spiral orbiting wrap (52) provided upright on the orbiting end plate portion (51).
The slide type fluid machine, wherein the slide groove (80) is a groove that penetrates the turning end plate portion (51) in the thickness direction. The scroll type fluid machine according to claim 2,
A housing member (45) provided with a bearing (48) for supporting the rotating shaft (20) is provided, and the housing member (45) constitutes the non-orbiting member (69) together with the non-orbiting scroll (60). on the other hand,
The slide type fluid machine, wherein the slide groove (80) is formed in one of the housing member (45) and the non-orbiting scroll (60). The scroll type fluid machine according to claim 2,
A housing member (45) provided with a bearing (48) for supporting the rotating shaft (20) is provided, and the housing member (45) constitutes the non-orbiting member (69) together with the non-orbiting scroll (60). on the other hand,
The slide groove (80) is a scroll type fluid machine formed in each of the housing member (45) and the non-orbiting scroll (60). The scroll type fluid machine according to claim 1 or 3,
The pin shaft portion (70) is formed in a column shape and is fixed to the non-rotating member (69),
A scroll type fluid machine in which a sliding surface (95) with a wall surface of a slide groove (80) in the pin shaft portion (70) is an arc surface. The scroll type fluid machine according to claim 14,
The scroll type fluid machine in which the pin shaft portion (70) has a shape in which a portion closer to the rotary shaft (20) is cut out than a sliding surface (95) with a wall surface of the slide groove (80). The scroll type fluid machine according to claim 15,
The orbiting scroll (50) includes an orbiting end plate portion (51) formed in a flat plate shape, and a spiral orbiting wrap (52) provided upright on the orbiting end plate portion (51).
The slide groove (80) is a groove that penetrates the swivel end plate portion (51) in the thickness direction,
The distance from the end of the slide groove (80) on the side of the orbiting wrap (52) to the outer surface on the side of the orbiting wrap (52) is longer than twice the revolution radius of the orbiting wrap (52). Scroll type fluid machine. The scroll type fluid machine according to claim 15,
The pin shaft portion (70) is fixed to a non-orbiting scroll (60) as a non-orbiting member (69),
The orbiting scroll (50) includes an orbiting end plate portion (51) formed in a flat plate shape, and a spiral orbiting wrap (52) provided upright on the orbiting end plate portion (51).
The slide groove (80) is a concave groove opened on the surface of the swivel end plate (51) on the swirl wrap (52) side,
The distance from the end of the slide groove (80) on the side of the orbiting wrap (52) to the outer surface on the side of the orbiting wrap (52) is longer than twice the revolution radius of the orbiting wrap (52). Scroll type fluid machine. The scroll type fluid machine according to claim 2 or 4,
The pin shaft portion (70) is formed in a column shape and is fixed to the orbiting scroll (50),
A scroll type fluid machine in which a sliding surface (95) with a wall surface of a slide groove (80) in the pin shaft portion (70) is an arc surface. The scroll type fluid machine according to claim 18,
The scroll type fluid machine in which the pin shaft portion (70) has a shape in which a portion closer to the rotary shaft (20) is cut out than a sliding surface (95) with a wall surface of the slide groove (80). The scroll type fluid machine according to claim 1 or 3,
The scroll type fluid machine, wherein the pin shaft portion (70) is rotatably attached to the non-rotating member (69). The scroll type fluid machine according to claim 2 or 4,
The pin shaft portion (70) is a scroll fluid machine that is rotatably attached to the orbiting scroll (50). The scroll type fluid machine according to claim 20 or 21,
A scroll type fluid machine in which a flat sliding surface (72) that slides on the wall surface of the slide groove (80) is formed on the pin shaft portion (70). The scroll type fluid machine according to claim 1, 2, 3, or 4,
The pin shaft portion (70) includes a columnar body member (73), and a bush member (74) that is attached to the body member (73) and slides on the wall surface of the slide groove (80). Scroll type fluid machine that is configured. The scroll type fluid machine according to claim 1 or 3,
The pin shaft portion (70) includes a columnar body member (73), and a bush member (74) that is attached to the body member (73) and slides on the wall surface of the slide groove (80). Configured,
A scroll type fluid machine in which the main body member (73) is fixed to the non-rotating member (69), and the bush member (74) is rotatably attached to the main body member (73). The scroll type fluid machine according to claim 2 or 4,
The pin shaft portion (70) includes a columnar body member (73), and a bush member (74) that is attached to the body member (73) and slides on the wall surface of the slide groove (80). Configured,
A scroll type fluid machine in which the main body member (73) is fixed to the orbiting scroll (50), and the bush member (74) is rotatably attached to the main body member (73). The scroll type fluid machine according to claim 1 or 3,
The pin shaft portion (70) includes a columnar body member (73), and a bush member (74) that is attached to the body member (73) and slides on the wall surface of the slide groove (80). Configured,
A scroll type fluid machine in which the main body member (73) is rotatably attached to the non-rotating member (69), and the bush member (74) is fixed to the main body member (73). The scroll type fluid machine according to claim 2 or 4,
The pin shaft portion (70) includes a columnar body member (73), and a bush member (74) that is attached to the body member (73) and slides on the wall surface of the slide groove (80). Configured,
A scroll type fluid machine in which the main body member (73) is rotatably attached to the orbiting scroll (50), and the bush member (74) is fixed to the main body member (73). The scroll type fluid machine according to claim 24, 25, 26 or 27,
A scroll type fluid machine in which the bush member (74) is formed with a flat sliding surface (75) that slides on the wall surface of the slide groove (80). The scroll type fluid machine according to claim 1 or 3,
The orbiting scroll (50) includes an orbiting end plate portion (51) formed in a flat plate shape, and a spiral orbiting wrap (52) provided upright on the orbiting end plate portion (51).
The said slide groove | channel (80) is a scroll type fluid machine formed in the vicinity of the outer peripheral side edge part of the said turning lap | wrap (52) in the said turning mirror board part (51). The scroll type fluid machine according to claim 1 or 3,
The orbiting scroll (50) includes an orbiting end plate portion (51) formed in a flat plate shape, and a spiral orbiting wrap (52) provided upright on the orbiting end plate portion (51).
In the swivel end plate portion (51), the slide groove (80) is formed at a position further advanced from the outer peripheral side end portion of the swirl wrap (52) along the extending direction of the swirl wrap (52). Scroll type fluid machine. The scroll type fluid machine according to claim 2 or 4,
The orbiting scroll (50) includes an orbiting end plate portion (51) formed in a flat plate shape, and a spiral orbiting wrap (52) provided upright on the orbiting end plate portion (51).
The scroll type fluid machine, wherein the pin shaft portion (70) is disposed in the vicinity of an outer peripheral end portion of the orbiting wrap (52) in the orbiting end plate portion (51). The scroll type fluid machine according to claim 2 or 4,
The orbiting scroll (50) includes an orbiting end plate portion (51) formed in a flat plate shape, and a spiral orbiting wrap (52) provided upright on the orbiting end plate portion (51).
In the swivel end plate portion (51), the pin shaft portion (70) is provided at a position further advanced from the outer peripheral side end portion of the swirl wrap (52) along the extending direction of the swirl wrap (52). Scroll type fluid machine. The scroll type fluid machine according to claim 1, 2, 3, or 4,
The spiral orbiting wrap (52) provided on the orbiting scroll (50) has a constant thickness,
The scroll-type fluid machine in which the spiral non-orbiting wrap (63) provided in the non-orbiting scroll (60) gradually increases and decreases in thickness from the inner peripheral end to the outer peripheral end. The scroll type fluid machine according to claim 1, 2, 3, or 4,
The spiral orbiting wrap (52) provided in the orbiting scroll (50) has its thickness repeatedly increasing and decreasing gradually from the inner peripheral end to the outer peripheral end,
A scroll type fluid machine in which the spiral non-orbiting wrap (63) provided in the non-orbiting scroll (60) has a constant thickness. The scroll type fluid machine according to claim 1, 2, 3, or 4,
The spiral orbiting wrap (52) provided in the orbiting scroll (50) has its thickness repeatedly increasing and decreasing gradually from the inner peripheral end to the outer peripheral end,
The scroll-type fluid machine in which the spiral non-orbiting wrap (63) provided in the non-orbiting scroll (60) gradually increases and decreases in thickness from the inner peripheral end to the outer peripheral end. The scroll type fluid machine according to claim 1, 2, 3, or 4,
The non-orbiting scroll (60) is provided with a spiral non-orbiting wrap (63), and the orbiting scroll (50) is provided with a spiral orbiting wrap (52).
A scroll-type fluid machine in which an outer peripheral side end of the non-orbiting wrap (63) extends to the vicinity of an outer peripheral end of the orbiting wrap (52). The movable scroll (50), a crank (20) whose eccentric pin (22) engages with the movable scroll (50), and a fixed side member (69) comprising at least a fixed scroll (60) A scroll type fluid machine in which a scroll (50) revolves around an axis of the crank (20),
A pin shaft portion (70) attached to the fixed side member (69) is provided, and the distance from the shaft center of the pin shaft portion (70) to the shaft center of the crank (20) is the revolution of the movable scroll (50). While set longer than the radius,
The movable scroll (50) has a slide groove (80) that engages with the pin shaft portion (70).
A scroll type fluid machine in which rotation of the movable scroll (50) is restricted by sliding of a wall surface of the slide groove (80) and the pin shaft portion (70) during revolution of the movable scroll (50). The movable scroll (50), a crank (20) whose eccentric pin (22) engages with the movable scroll (50), and a fixed side member (69) comprising at least a fixed scroll (60) A scroll type fluid machine in which a scroll (50) revolves around an axis of the crank (20),
A pin shaft portion (70) attached to the movable scroll (50) is provided, and the distance from the shaft center of the pin shaft portion (70) to the shaft center of the eccentric pin (22) is the revolution of the movable scroll (50). While set longer than the radius,
The stationary member (69) has a slide groove (80) that engages with the pin shaft portion (70),
A scroll type fluid machine in which rotation of the movable scroll (50) is restricted by sliding of the wall surface of the slide groove (80) and the pin shaft portion (70) during the revolution of the movable scroll (50). The scroll type fluid machine according to claim 37,
The slide groove (80) is formed in a straight line,
A scroll type fluid machine in which the center line of the slide groove (80) is orthogonal to both the axis of the pin shaft portion (70) and the axis of the eccentric pin (22). The scroll type fluid machine according to claim 37,
The slide groove (80) is formed in a straight line,
A scroll type fluid machine in which the center line of the slide groove (80) has an acute angle formed by a straight line perpendicular to both the axis of the pin shaft portion (70) and the axis of the eccentric pin (22) . The scroll type fluid machine according to claim 38,
The slide groove (80) is formed in a straight line,
A scroll fluid machine in which the center line of the slide groove (80) is orthogonal to both the axis of the pin shaft (70) and the axis of the crank (20). The scroll type fluid machine according to claim 38,
The slide groove (80) is formed in a straight line,
A scroll type fluid machine in which the center line of the slide groove (80) has an acute angle with a straight line perpendicular to both the axis of the pin shaft portion (70) and the axis of the crank (20). The scroll type fluid machine according to claim 37,
A housing member (45) provided with a bearing (48) for supporting the crank (20) is provided, and the housing member (45) constitutes the fixed side member (69) together with the fixed scroll (60),
The scroll type fluid machine in which the pin shaft portion (70) is attached to one or both of the housing member (45) and the fixed scroll (60). The scroll type fluid machine according to claim 37,
The movable scroll (50) includes a movable side end plate part (51) formed in a flat plate shape, and a spiral movable side wrap (52) provided upright on the movable side end plate part (51). ,
The scroll type fluid machine, wherein the slide groove (80) is a concave groove opened on the surface of the movable side end plate portion (51). The scroll type fluid machine according to claim 37,
The movable scroll (50) includes a movable side end plate part (51) formed in a flat plate shape, and a spiral movable side wrap (52) provided upright on the movable side end plate part (51). ,
The scroll type fluid machine, wherein the slide groove (80) is a groove that penetrates the movable side end plate portion (51) in the thickness direction. The scroll fluid machine according to claim 38,
A housing member (45) provided with a bearing (48) for supporting the crank (20) is provided, and the housing member (45) constitutes the fixed side member (69) together with the fixed scroll (60),
The slide type fluid machine, wherein the slide groove (80) is formed in one of the housing member (45) and the fixed scroll (60). The scroll type fluid machine according to claim 38,
A housing member (45) provided with a bearing (48) for supporting the crank (20) is provided, and the housing member (45) constitutes the fixed side member (69) together with the fixed scroll (60),
The slide groove (80) is a scroll type fluid machine formed in each of the housing member (45) and the fixed scroll (60). The scroll type fluid machine according to claim 37,
The scroll type fluid machine, wherein the pin shaft portion (70) is formed in a columnar shape and is fixed to the fixed side member (69). The scroll type fluid machine according to claim 38,
The scroll type fluid machine, wherein the pin shaft portion (70) is formed in a cylindrical shape and is fixed to the movable scroll (50). The scroll type fluid machine according to claim 37,
The scroll type fluid machine, wherein the pin shaft portion (70) is rotatably attached to the fixed side member (69). The scroll type fluid machine according to claim 38,
The scroll type fluid machine, wherein the pin shaft portion (70) is rotatably attached to the movable scroll (50). The scroll type fluid machine according to claim 50 or 51,
A scroll type fluid machine in which a flat sliding surface (72) that slides on the wall surface of the slide groove (80) is formed on the pin shaft portion (70). The scroll fluid machine according to claim 37 or 38,
The pin shaft portion (70) includes a columnar body member (73), and a bush member (74) that is attached to the body member (73) and slides on the wall surface of the slide groove (80). Scroll type fluid machine that is configured. The scroll type fluid machine according to claim 37,
The pin shaft portion (70) includes a columnar body member (73), and a bush member (74) that is attached to the body member (73) and slides on the wall surface of the slide groove (80). Configured,
A scroll type fluid machine in which the main body member (73) is fixed to the stationary side member (69), and the bush member (74) is rotatably attached to the main body member (73). The scroll type fluid machine according to claim 38,
The pin shaft portion (70) includes a columnar body member (73), and a bush member (74) that is attached to the body member (73) and slides on the wall surface of the slide groove (80). Configured,
A scroll type fluid machine in which the main body member (73) is fixed to the movable scroll (50), and the bush member (74) is rotatably attached to the main body member (73). The scroll type fluid machine according to claim 37,
The pin shaft portion (70) includes a columnar body member (73), and a bush member (74) that is attached to the body member (73) and slides on the wall surface of the slide groove (80). Configured,
A scroll type fluid machine in which the main body member (73) is rotatably attached to the fixed side member (69), and the bush member (74) is fixed to the main body member (73). The scroll type fluid machine according to claim 38,
The pin shaft portion (70) includes a columnar body member (73), and a bush member (74) that is attached to the body member (73) and slides on the wall surface of the slide groove (80). Configured,
A scroll type fluid machine in which the main body member (73) is rotatably attached to the movable scroll (50), and the bush member (74) is fixed to the main body member (73). The scroll type fluid machine according to claim 54, 55, 56 or 57,
A scroll type fluid machine in which the bush member (74) is formed with a flat sliding surface (75) that slides on the wall surface of the slide groove (80). The scroll type fluid machine according to claim 37,
The movable scroll (50) includes a movable side end plate part (51) formed in a flat plate shape, and a spiral movable side wrap (52) provided upright on the movable side end plate part (51). ,
The scroll-type fluid machine, wherein the slide groove (80) is formed in the vicinity of the outer peripheral end of the movable side wrap (52) in the movable side end plate part (51). The scroll type fluid machine according to claim 38,
The movable scroll (50) includes a movable side end plate portion (51) formed in a flat plate shape, and a spiral movable side wrap (52) provided upright on the movable side end plate portion (51).
The scroll type fluid machine, wherein the pin shaft portion (70) is disposed in the vicinity of an outer peripheral side end portion of the movable side wrap (52) in the movable side end plate portion (51). The scroll fluid machine according to claim 37 or 38,
The spiral movable side wrap (52) provided on the movable scroll (50) has a constant thickness,
A scroll type fluid machine in which the spiral fixed side wrap (63) provided in the fixed scroll (60) is gradually increased or decreased in thickness from the inner peripheral end to the outer peripheral end. The scroll fluid machine according to claim 37 or 38,
The spiral movable side wrap (52) provided on the movable scroll (50) has its thickness gradually increasing and decreasing gradually from the inner peripheral end to the outer peripheral end,
The scroll type fluid machine in which the spiral fixed side wrap (63) provided in the fixed scroll (60) has a constant thickness. The scroll fluid machine according to claim 37 or 38,
The spiral movable side wrap (52) provided on the movable scroll (50) has its thickness gradually increasing and decreasing gradually from the inner peripheral end to the outer peripheral end,
A scroll type fluid machine in which the spiral fixed side wrap (63) provided in the fixed scroll (60) is gradually increased or decreased in thickness from the inner peripheral end to the outer peripheral end. The scroll fluid machine according to claim 37 or 38,
The fixed scroll (60) is provided with a spiral fixed side wrap (63), and the movable scroll (50) is provided with a spiral movable side wrap (52).
A scroll type fluid machine in which an outer peripheral side end of the fixed side wrap (63) is extended to the vicinity of an outer peripheral side end of the movable side wrap (52).

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