JP2005315209A - Scroll fluid device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light weight, durable , low cost, small size scroll fluid device. <P>SOLUTION: A turning position regulating mechanism 20 of a scroll compressor is arranged between a movable side plate 121 and a front housing 14, and includes a turning position regulating plate 21 having turning position regulating holes 22 arranged thereon, a plurality of first rotation prevention pins 23 projectingly provided on a movable side plate 21 and loosely inserted in each turning position regulating hole 22, and a plurality of second rotation prevention pins 24 projectingly provided on a front housing 14 and loosely inserted in each turning position regulating hole 22. Consequently, forming process of each turning position regulating hole 22 can be one process, and light weight material can be used as material for the turning position regulating plate 21. Since the turning position regulating plate 21 turns in a radius of half of a movable scroll 12, outer diameter thereof is larger than the movable side plate 121 and a sliding area can be easily secured in a limited size. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a scroll fluid device, for example, a scroll compressor that engages a movable scroll and a fixed scroll and revolves the movable scroll to suck and compress fluid.

  Conventionally, scroll fluid devices of this type, for example, those described in Patent Documents 1 and 2 are known as scroll compressors.

  The scroll compressor includes a fixed scroll having a spiral fixed wall standing on one side of a fixed side plate, a movable scroll having a spiral movable wall standing on one side of a movable side plate, a fixed wall, And a scroll turning mechanism that revolves the movable scroll in a state of being engaged with the movable wall. Further, in order to regulate the turning position of the movable scroll, a turning position restriction mechanism is provided between the housing and the movable side plate.

  This orbiting position restricting mechanism has an annular orbiting position restricting plate, and a first rotation prevention pin projects from the side surface facing the movable scroll toward the movable side plate, while the side surface facing the housing is provided with the housing. A second rotation prevention pin protrudes toward the opposing surface. Further, the movable side plate is provided with a first turning position restriction hole into which the first rotation prevention pin is loosely inserted, and a second turning position restriction hole into which the second rotation prevention pin is also loosely inserted is provided on the opposite surface of the housing. ing.

According to this orbiting position regulating mechanism, the rotating force of the movable scroll is converted into the orbiting motion of each rotation preventing pin at each orienting position regulating hole, so that the orbiting scroll is prevented from rotating and the orbiting radius of the orbiting scroll is increased. Is set.
JP 7-151511 A JP-A-6-167284

  As described above, in the conventional scroll compressor, each rotation prevention pin protrudes from each side surface of the orbiting position restricting plate, and the orbiting position restricting hole is provided on the other side surface of the movable scroll and the opposing surface of the housing.

  By the way, the outer peripheral edge of the movable scroll (movable side plate) is supported by an annular facing surface of the housing (closer to the inner peripheral surface of the housing). Here, since the space inside the opposing surface of the housing is a counterweight rotating space, when the movable scroll has a small diameter, the width of the opposing surface of the housing cannot be so large. The diameter of the second turning position restricting hole is increased by the amount of turning the second rotation prevention pin. As a result, there is a problem in that it is difficult to form the second turning position restricting hole having a large diameter on the narrow facing surface. Moreover, in order to solve this problem, the diameter of the movable scroll has to be increased, resulting in an increase in the size of the compressor.

  Further, although the turning position regulating plate turns relatively with the turning of the movable scroll, the power that does not contribute to the refrigerant suction / compression, that is, the power consumed for the turning movement of the turning position regulating plate is preferably as small as possible. Therefore, although the lightweight material is generally used as the material for the turning position regulating plate, the Young's modulus is lowered by the use of the light weight material, and each rotation prevention pin integrally formed on the turning position regulating plate is easily deformed. Therefore, each rotation prevention pin and each turning position restricting hole are not uniformly contacted, and there is a problem that the durability of the turning position restricting plate is deteriorated.

  Furthermore, when the turning position restricting plate is thick and heavy, the moment applied to the rotation prevention pin increases as the weight increases. Here, when the rotation prevention pin is tilted in the direction of tilting, the rotation prevention pin and each turning position restricting hole are biased in contact with each other and wear occurs, and the specified turning radius is increased by the tilt and wear. It cannot be maintained.

  Furthermore, since each turning position regulating hole is formed separately in the housing and the movable scroll, which are different parts, the countersinking process of each turning position regulating hole has two steps, and the machining cost is high. .

  An object of the present invention is to provide a scroll fluid device that is light in weight, excellent in durability, low in cost, and small in view of the conventional problems.

  In order to solve the above-mentioned problems, the present invention provides a fixed scroll having a spiral fixed wall standing on one side of a fixed side plate and a spiral movable moving standing on one side of a movable side plate. A movable scroll having a wall, a scroll turning mechanism for revolving the movable scroll in a state where the fixed wall and the movable wall are engaged, a housing having a facing surface facing the other side of the movable side plate, and the other side of the movable side plate In the scroll fluid device including a turning position restriction mechanism that is disposed between the housing and the facing surface and restricts the turning position of the movable scroll, the turning position restriction mechanism is provided between the other side surface of the movable side plate and the facing surface of the housing. An annular swivel position restricting plate arranged in a circumferential direction with a plurality of swivel position restricting holes arranged thereon, and a plurality of loosely inserted into each swivel position restricting hole protruding from the other side of the movable side plate A first rotation inhibiting pin, has a structure and a second rotation-preventing pin projecting from the opposing surface of the housing of the plurality of loosely inserted in each pivoting position regulating hole.

  According to the first aspect of the present invention, both the turning position restricting hole for the first rotation preventing pin and the turning position restricting hole for the second rotation preventing pin are formed in the turning position restricting plate. The forming process is completed in one process.

  In addition, since each rotation prevention pin is provided on the housing and the movable scroll and is not provided on the turning position restricting plate, the turning position restricting plate does not require high strength. Lightweight materials (materials that are not so high in Young's modulus) can be used. Further, since both surfaces of the turning position regulating plate can be formed smoothly with a lathe or the like, it can be finished with high precision by polishing or the like (when formed with synthetic resin, it can be finished without cutting). Furthermore, since the accuracy of both sides of the turning position restricting plate is improved, the gap between the turning position restricting plate, the housing and the movable scroll can be made extremely small, the performance can be prevented from being lowered, and the mechanical power accompanying friction etc. Loss can be prevented. Furthermore, the turning position regulating plate turns with a radius about half that of the movable scroll. Therefore, the swivel position regulating plate has a larger outer diameter than the movable side plate within the limited outer diameter of the fluid device, and it is easy to secure a sliding area.

  Furthermore, since each turning position restricting hole is provided in the turning position restricting plate and not in the housing, a sliding area is secured. Moreover, since the diameter of the turning position restricting hole can be increased and the rotation preventing pins loosely inserted into the turning position can be increased accordingly, the strength of the rotation preventing pins is improved.

  According to a second aspect of the present invention, in the scroll fluid device according to the first aspect, the side surface of the turning position regulating plate facing the other side surface of the movable side plate has a first receiving portion that receives the other side surface near the inner diameter thereof. The side surface of the turning position regulating plate facing the facing surface has a structure having a second receiving portion that receives the facing surface closer to the outer diameter.

  According to the second aspect of the present invention, the first receiving portion and the second receiving portion are separated from each other inside and outside the turning position regulating plate. As a result, even if a tilt occurs due to a dimensional error or thermal expansion of the movable scroll or the like, these defects are corrected by the elastic force of the turning position regulating plate, and a reduction in work amount can be prevented.

  Note that either the first receiving part or the second receiving part may protrude (Claims 3 and 4), or both the first receiving part and the second receiving part may protrude (claim). Item 5).

  According to a sixth aspect of the present invention, in the scroll fluid device according to the first to fifth aspects, the first rotation prevention pins and the second rotation prevention pins are alternately loosely inserted into the adjacent turning position restricting holes. The force applied to the movable scroll and the housing through the turning position regulating plate is uniform.

  According to the seventh aspect of the present invention, the diameter of each turning position restricting hole is Dp4, the diameter of the first rotation prevention pin is d1, the diameter tolerance of the first rotation prevention pin is w1, and the turning radius of the movable scroll is r. , Dp4 = d1 + r or Dp4 = d1 + r + w1. In the invention of claim 8, the diameter of each turning position restricting hole is Dp4, the diameter of the second rotation prevention pin is d2, the diameter tolerance of the second rotation prevention pin is w2, and the turning radius of the movable scroll is r. In this case, Dp4 = d2 + r or Dp4 = d2 + r + w2 is set. Here, d1> r or d2> r can be satisfied, and a design for improving the strength of each rotation prevention pin is possible.

  In addition, the inner diameter of the opposing surface of the housing is Dh1, the outer diameter of the other side surface of the movable side plate is Ds1, the outer diameter of the turning position restricting plate is Dp1, the inner diameter of the turning position restricting plate is Dp2, and the pitch circle diameter of each turning position restricting hole. Where Dp3, the diameter of each turning position restricting hole is Dp4, and the turning radius of the movable scroll is r, the condition setting that satisfies Dp2 <Dp3-Dp4-2 · r ≦ Dh1 <Ds1 ≦ Dp1 + Dp3 + Dp4 is satisfied. The most compact scroll fluid device can be realized when the minimum value of the condition setting is selected (invention of claim 9).

  The invention of claim 10 is set such that Dp5 <Dp3 <Dp6, where Dp5 is the outer diameter of the first receiving part, Dp6 is the inner diameter of the second receiving part, and Dp3 is the pitch circle diameter of each turning position restricting hole. doing. Thus, the setting of the invention of claim 2 is realized, and, similarly to the invention of claim 2, the tilting moment with respect to the first rotation prevention pin and the second rotation prevention pin is reduced, and the sliding of the turning position regulating plate is performed. In addition, it is possible to improve the workability and wear resistance, and to prevent the work of the movable scroll from being lowered.

  Further, when the inner diameter of the opposing surface of the housing is Dh2, the outer diameter of the other side surface of the movable side plate is Ds2, the pitch circle diameter of each turning position restricting hole is Dp3, and the turning radius of the movable scroll is r, Ds2 <Dp3 + 2 · r <Dh2 may be set (invention of claim 11).

  As described above, the turning position regulating plate can be formed of a member having a Young's modulus lower than that of metal or the like, for example, a synthetic resin (invention of claim 12). Further, when using a swivel position restricting plate made of synthetic resin, a steel cylinder member may be fitted into the inner surface of the swivel position restricting hole in consideration of wear resistance between the rotation prevention pin and the swivel position restricting hole ( (Invention of Claim 13)

  According to a fourteenth aspect of the present invention, in the scroll fluid device according to the first to thirteenth aspects, a lubricating oil passage is provided inside the housing so as to penetrate the opposing surface and face the turning position regulating plate. According to the fourteenth aspect of the present invention, the lubricating oil circulated toward the turning position regulating plate is supplied to the inside of the housing through the lubricating oil passage, and the bearings of the movable scroll can be lubricated.

  According to the present invention, the turning position regulating plate can be reduced in weight and has excellent durability, the manufacturing cost of the turning position regulating plate is reduced, and further, the performance of the scroll fluid device is improved. it can.

  1 to 4 show a first embodiment of a scroll fluid device according to the present invention, for example, a scroll compressor. FIG. 1 is a sectional view of the scroll compressor, and FIG. 2 is a front housing, a movable scroll, and a swing position regulation. 3 is an exploded perspective view of the plate, FIG. 3 is an exploded sectional view of the front housing, the movable scroll, and the orbiting position regulating plate. FIG. 4 is a longitudinal sectional view of the orbiting position regulating plate. And it is a BB line arrow direction sectional view of the longitudinal section.

  First, the schematic structure of the scroll compressor will be described with reference to FIG. The scroll compressor 10 includes a fixed scroll 11 and a movable scroll 12 that compress a refrigerant, a scroll turning mechanism 13 that turns and moves the movable scroll 12, and an electromagnetic power (not shown) that intermittently transmits external power to the scroll turning mechanism 13. And a clutch. Here, the scroll turning mechanism 13 is accommodated in the front housing 14. The fixed scroll 11 and the movable scroll 12 are installed between the front housing 14 and the rear housing 15.

  The fixed scroll 11 includes a disk-shaped fixed side plate 111 and a spiral fixed wall 112 erected from one side surface 111 a of the fixed side plate 111. Here, a refrigerant discharge chamber 151 is formed between the other side surface of the fixed side plate 111 and the rear housing 15, and a discharge port 111 b for discharging the compressed refrigerant toward the discharge chamber 151 is formed in the fixed side plate 111. Has been. The compressed refrigerant discharged into the discharge chamber 151 is supplied to a refrigerant circuit (not shown).

  The movable scroll 12 includes a disk-shaped movable side plate 121 and a spiral movable wall 122 erected from one side surface 121 a of the movable side plate 121. The movable wall 122 is disposed so as to mesh with the fixed wall 112 of the fixed scroll 11, and a compression space is formed between the fixed wall 112 and the movable wall 122 by the revolving motion of the movable scroll 12. Note that a refrigerant suction port 123 is provided on the outer side of the movable wall 122 so that the refrigerant is guided from the outer peripheral side of each of the walls 112 and 122 to the inside of each of the walls 112 and 122.

  The scroll turning mechanism 13 has a drive bush 132 to which a counterweight 131 is fixed, a crank 134 connected to the drive bush 132 via an eccentric pin 133, and a main shaft 135 connected to the crank 134 and an electromagnetic clutch. . Further, the drive bush 132 is fitted into the other side surface 121 b of the movable side plate 121 via a bearing 136. Here, when the electromagnetic clutch is excited and external power is transmitted to the main shaft 135, the main shaft 135 rotates. The rotational force of the main shaft 135 is transmitted to the drive bush 132 through the crank 134 and the eccentric pin 133, and the movable scroll 12 performs a turning motion.

  The above-described configuration is the same in the conventional scroll compressor, and the refrigerant is sucked between the walls 112 and 122 by the revolving motion of the movable scroll 12, and the compression spaces surrounded by the walls 112 and 122 are sequentially provided. It is configured to increase the pressure of the refrigerant by decreasing it.

  The feature of the scroll compressor 1 according to the present embodiment is the structure of the turning position regulating mechanism 20 that prevents the movable scroll 12 from rotating. The structure of the turning position regulating mechanism 20 will be described mainly with reference to FIGS.

  The turning position regulating mechanism 20 is installed between the other side surface 121b of the movable side plate 121 and the facing surface 14a of the front housing 14 facing the other side surface 121b. Further, the turning position restriction mechanism 20 has a movable position restriction plate 21. In order to reduce the weight of the movable position restricting plate 21, a polyether ether kent (PEEK) resin or a polyphenylene sulfide (PPS) resin excellent in heat resistance and rigidity is used. The turning position regulating plate 21 is disposed between the other side surface 121b of the movable side plate 121 and the facing surface 14a of the front housing 14, and is formed in an annular shape. It is drilled at equal intervals in the direction. Furthermore, the 1st receiving part 211a which receives the other side surface 121b of the movable side plate 121 is formed in the 1st side surface 211 which opposes the movable side plate 121 among the both sides | surfaces of the turning position control plate 21. As shown in FIG. In addition, a second receiving portion 212a that receives the facing surface 14a is formed near the outer diameter of the second side surface 212 that faces the facing surface 14a of the front housing 14 among both side surfaces of the turning position regulating plate 21. . The first receiving portion 211a protrudes toward the other side surface 121b of the movable side plate 121 as a whole, and the second receiving portion 212a also protrudes toward the facing surface 14a of the front housing 14 as a whole.

  The turning position restriction mechanism 20 has four first rotation prevention pins 23 and four second rotation prevention pins 24 that are loosely inserted into the turning position restriction holes 22. The first rotation prevention pins 23 are arranged at equal intervals in the circumferential direction near the outer peripheral edge of the other side surface 121 b of the movable side plate 121. Further, the second rotation prevention pins 24 are arranged at equal intervals in the circumferential direction near the inner peripheral edge of the facing surface 14 a of the front housing 14. Each first rotation prevention pin 23 and each second rotation prevention pin 24 are arranged so as to be inserted adjacent to each turning position restricting hole 22.

Here, the relationship between each turning position restricting hole 22 and each rotation prevention pin 23, 24 will be described with reference to FIGS. That is, the diameter of each turning position restricting hole 22 is Dp4, the diameter of the first rotation prevention pin 23 is d1, the diameter tolerance of the first rotation prevention pin 23 is w1 (not shown), and the turning radius of the movable scroll is r. When the first rotation prevention pin 23 is used as a reference,
Dp4 = d1 + r or Dp4 = d1 + r + w1
It is sufficient to satisfy the conditions.

On the other hand, the diameter of each turning position restricting hole 22 is Dp4, the diameter of the second rotation prevention pin 24 is d2, the diameter tolerance of the second rotation prevention pin 24 is w2 (not shown), and the turning radius of the movable scroll is r. When the second rotation prevention pin 24 is used as a reference,
Dp4 = d2 + r or Dp4 = d2 + r + w2
It is sufficient to satisfy the conditions.

  Of course, when the condition of d1 = d2 is satisfied, the design may be based on either the first rotation prevention pin 23 or the second rotation prevention pin 24. Moreover, since it can be set as d1> r or d2> r, the design which improves the intensity | strength of each rotation prevention pin 23 and 24 is possible.

Next, design dimensions for realizing a compact design of the scroll compressor 10 will be described. That is, the inner diameter of the facing surface 14a of the front housing 14 is Dh1, the outer diameter of the other side surface 121b of the movable side plate 121 is Ds1, the outer diameter of the turning position restricting plate 21 is Dp1, and the inner diameter of the turning position restricting plate 21 is Dp2. When the pitch circle diameter of the position restricting hole 22 is Dp3, the diameter of each turning position restricting hole 22 is Dp4, and the turning radius of the movable scroll 12 is r,
Dp2 <Dp3-Dp4-2 · r ≦ Dh1 <Ds1 ≦ Dp1 + Dp3 + Dp4
Any material that satisfies the following conditions may be used.

Subsequently, in order to impart elasticity to the turning position regulating plate 21, the following design is made. That is, when the outer diameter of the first receiving portion 211a is Dp5, the inner diameter of the second receiving portion 212a is Dp6, and the pitch circle diameter of each turning position restricting hole 22 is Dp3,
Dp5 <Dp3 <Dp6
It is designed to be

  As shown in FIG. 2, a lubricating oil passage 14 b that penetrates the facing surface 14 a of the front housing 14 and faces the turning position regulating plate 21 is provided on the inner surface of the front housing 14.

  According to the present embodiment, since the turning position restriction holes 22 of the first rotation prevention pin 23 and the second rotation prevention pin 24 are both formed in the turning position restriction plate 21, the forming process of each turning position restriction hole 22 is performed. One step is enough.

  Moreover, since each rotation prevention pin 23 and 24 is provided in the front housing 14 and the movable scroll 12, and is not provided in the turning position control plate 21, high intensity | strength is not requested | required of the turning position control plate 21, thereby As a material for the turning position regulating plate 21, a light material (a material whose Young's modulus is not so high) can be used. Therefore, the turning position regulating plate 21 according to the present embodiment is reduced in weight by using PEEK resin or PPS resin.

  Further, since the turning position restricting plate 21 is made of synthetic resin, both surfaces of the turning position restricting plate 21 can be formed smoothly without cutting, so that it can be finished with high precision by polishing or the like, and further, the turning position restricting plate 21 can be finished. Since the accuracy of both sides of the regulating plate 21 is improved, the gap between the turning position regulating plate 21 and the front housing 14 and the movable scroll 12 can be made extremely small, performance can be prevented from being lowered, and mechanical properties accompanying friction and the like can be prevented. Power loss can be prevented.

  Furthermore, since each turning position restricting hole 22 is provided in the turning position restricting plate 21 and is not provided in the front housing 14, there is no problem even if the width of the facing surface 14a of the front housing 14 is narrow. Moreover, since the diameter of the turning position restricting hole 22 can be increased, and the rotation prevention pins 23 and 24 that are loosely inserted therein can be increased accordingly, the strength of the rotation prevention pins 23 and 24 is improved.

  Furthermore, the first receiving portion 211a that comes into contact with the movable scroll 12 is closer to the inner diameter of the first side surface 211 of the turning position restricting plate 21, and the second receiving portion 212a that comes into contact with the front housing 14 is turned around. It is closer to the outer diameter of the second side surface 212 of the plate 21 (Dp5 <Dp3 <Dp6). As a result, the receiving portions 211a and 212a are separated from each other inside and outside the turning position regulating plate 21.

  Here, when the movable scroll 12 is tilted and the load of the movable scroll 12 is applied to the first receiving portion 211a and further transmitted to the second receiving portion 212a, it is absorbed by the turning position regulating plate 21. Therefore, the tilting moment with respect to the first rotation prevention pin 23 and the second rotation prevention pin 24 is not increased, the sliding resistance of the turning position regulating plate 21 is reduced, and the parallelism of the movable scroll 21 is turned. Correction by the position regulating plate 21 can prevent the work of the movable scroll 12 from being reduced.

  The first receiving portion 211a protrudes toward the movable side plate 121, and the second receiving portion 212a protrudes toward the facing surface 14a of the front housing 14, whereby the first receiving portion 211a and the second receiving portion are projected. Since the step is formed with the portion 212a, the above-mentioned axial elastic force of the turning position restricting plate 21 is large, and the slidability and wear resistance of the turning position restricting plate 21 are further improved. .

  Furthermore, an oil lubrication passage 14b that passes through the facing surface 14a and faces the turning position regulating plate 21 is provided inside the circulation inside the front housing 14. Thereby, the lubricating oil (the lubricating oil contained in the refrigerant) circulated to the turning position regulating plate 21 side is supplied to the inside of the front housing 14 through the oil lubricating passage 14b, and the bearings of the movable scroll 12 and the like can be lubricated.

  FIG. 5 shows a second embodiment of the scroll compressor according to the present invention. Note that the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

The scroll compressor according to the second embodiment has a larger inner diameter Dh2 on the facing surface 14a ′ side of the front housing 14, while a smaller outer diameter Ds2 on the other side surface 121b ′ of the movable side plate 121. When the pitch circle diameter of the turning position restricting hole 22 is Ds2 and the turning radius of the movable scroll 12 is r,
Ds2 <Dp3 + 2 · r <Dh2
Designing to satisfy the above conditions.

  Other configurations and operations are the same as those in the first embodiment.

  In each of the embodiments described above, the turning position restricting plate 21 is made of synthetic resin, so that the inner surface portion of each turning position restricting hole 22 is somewhat fragile compared to a metal one. Therefore, a steel cylinder member (not shown) may be fitted into the inner surface of each turning position restricting hole 22 to increase the strength of each turning position restricting hole 22.

  Further, in each of the embodiments, the receiving portions 211a and 212a are formed so as to protrude together, but only one of them may be protruded.

  Furthermore, in each said embodiment, although the turning position control plate 21 is formed with a synthetic resin, it is not restricted to this, You may make it form with a lightweight metal. When the turning position restricting plate 21 is made of metal, since the rotation preventing pins 23 and 24 are not provided, the turning position restricting plate 21 can be finished with high accuracy by lathe processing or the like.

  Furthermore, although the scroll compressor has been described as an example of the scroll fluid device, it is of course applicable to a scroll expansion device.

Sectional drawing of the scroll compressor which concerns on 1st Embodiment The disassembled perspective view of the front housing of 1st Embodiment, a movable scroll, and a turning position control plate 1 is an exploded sectional view of a front housing, a movable scroll, and a turning position regulating plate according to a first embodiment. The longitudinal cross-sectional view of the turning position control plate of 1st Embodiment, the AA arrow direction sectional view of the said longitudinal cross-sectional view, and the BB arrow direction sectional view of the said longitudinal cross-sectional view Exploded sectional view of the front housing, the movable scroll and the turning position regulating plate of the second embodiment

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Scroll compressor, 11 ... Fixed scroll, 12 ... Movable scroll, 13 ... Scroll turning mechanism, 14 ... Front housing, 14a, 14a '... Opposite surface, 20 ... Turning position control mechanism, 21 ... Turning position control plate, 22 Rotation position restricting hole, 23 ... First rotation prevention pin, 24 ... Second rotation prevention pin, 111 ... Fixed side wall, 121 ... Movable side wall, 121b, 121b '... Other side surface, 211 ... First side surface, 211a ... First Receiving part, 212 ... second side surface, 212a ... second receiving part.

Claims (14)

A fixed scroll having a spiral fixed wall standing on one side of a fixed side plate, a movable scroll having a spiral movable wall standing on one side of a movable side plate, and the fixed wall and the movable wall are engaged with each other. A scroll turning mechanism that revolves the movable scroll in a state in which the movable scroll is revolved, a housing having a facing surface facing the other side surface of the movable side plate, and disposed between the other side surface of the movable side plate and the facing surface of the housing. In a scroll fluid device including a turning position restriction mechanism for restricting the turning position of the movable scroll,
The swivel position restricting mechanism is an annular swivel position restricting plate arranged between the other side surface of the movable side plate and the facing surface of the housing and arranged with a plurality of swivel position restricting holes in the circumferential direction;
A plurality of first rotation prevention pins projecting on the other side surface of the movable side plate and loosely inserted into the respective turning position regulating holes;
A scroll fluid device, comprising: a plurality of second rotation prevention pins that protrude from an opposing surface of the housing and are loosely inserted into the turning position restricting holes. The side surface of the turning position regulating plate facing the other side surface of the movable side plate has a first receiving portion that receives the other side surface near the inner diameter, and the side surface of the turning position regulating plate facing the facing surface of the housing is The scroll fluid device according to claim 1, further comprising a second receiving portion that receives the opposing surface near the outer diameter. The scroll fluid device according to claim 2, wherein the first receiving portion protrudes toward the other side surface of the movable side plate. The scroll fluid device according to claim 2, wherein the second receiving portion protrudes toward the facing surface of the housing. The scroll fluid device according to claim 2, wherein the first receiving portion protrudes toward the other side surface of the movable side plate, and the second receiving portion protrudes toward the facing surface of the housing. 6. Each of the first rotation prevention pins and the second rotation prevention pins are alternately loosely inserted into the respective turning position restricting holes adjacent to each other. 6. Scroll fluid device. The diameter of each turning position restricting hole is Dp4,
The diameter of the first rotation prevention pin is d1,
The diameter tolerance of the first rotation prevention pin is w1,
When r is the turning radius of the movable scroll,
The scroll fluid device according to any one of claims 1 to 6, wherein Dp4 = d1 + r or Dp4 = d1 + r + w1 is set. The diameter of each turning position restricting hole is Dp4,
The diameter of the second rotation prevention pin is d2,
The diameter tolerance of the second rotation prevention pin is w2,
When r is the turning radius of the movable scroll,
The scroll fluid device according to any one of claims 1 to 6, wherein Dp4 = d2 + r or Dp4 = d2 + r + w2 is set. The inner diameter of the opposing surface of the housing is Dh1,
The outer diameter of the other side surface of the movable side plate is Ds1,
The outer diameter of the turning position regulating plate is Dp1,
The inner diameter of the turning position regulating plate is Dp2,
The pitch circle diameter of each of the turning position restricting holes is Dp3,
The diameter of each turning position restricting hole is Dp4,
When r is the turning radius of the movable scroll,
Dp2 <Dp3-Dp4-2 · r ≦ Dh1 <Ds1 ≦ Dp1 + Dp3 + Dp4
The scroll fluid device according to any one of claims 2 to 8, wherein the scroll fluid device is set to be. The outer diameter of the first receiving part is Dp5,
The inner diameter of the second receiving part is Dp6,
When the pitch circle diameter of each of the turning position restricting holes is Dp3,
Dp5 <Dp3 <Dp6
The scroll fluid device according to any one of claims 2 to 9, wherein the scroll fluid device is set to be. The inner diameter of the opposing surface of the housing is Dh2,
The outer diameter of the other side surface of the movable side plate is Ds2,
The pitch circle diameter of each of the turning position restricting holes is Dp3,
When r is the turning radius of the movable scroll,
Ds2 <Dp3 + 2 · r <Dh2
The scroll fluid device according to any one of claims 2 to 10, wherein the scroll fluid device is set to be. The scroll fluid device according to any one of claims 1 to 11, wherein the turning position regulating plate is made of a synthetic resin. The scroll fluid device according to claim 12, wherein a steel cylinder member is fitted in an inner surface of each of the turning position regulating holes. The scroll fluid device according to any one of claims 1 to 13, wherein a lubricating oil passage is provided inside the housing so as to penetrate the facing surface and face the turning position regulating plate.

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