JP2018132036A - Double-rotating scroll compressor and method of assembling the same - Google Patents

Abstract

The present invention provides a double-rotating scroll compressor capable of suppressing as much as possible the generation of noise and vibration due to a shift in the center of gravity of a scroll member. A drive-side scroll member having a spiral drive side wall 71b that is rotationally driven by a drive unit and disposed on a drive side end plate 71a, and a driven side end plate that is disposed on a driven side end plate and corresponds to the drive side wall 71b. And a driven scroll member that forms a compression chamber when the driven side wall is engaged with the drive side wall 71b. Positioning pins 40 for positioning the phase around the drive-side rotation axis CL1 of the drive-side scroll member 70 are provided around the drive-side rotation axis CL1 at the tip in the axial direction of the drive side wall 71b. Dummy pins 41 provided at equal angular intervals around the side rotation axis CL1 are provided. [Selection] Figure 2

Description

  The present invention relates to a double-rotating scroll compressor and an assembling method thereof.

  Conventionally, a double-rotation scroll compressor is known (see Patent Document 1). This comprises a drive-side scroll and a driven-side scroll that rotates synchronously with the drive-side scroll, and the driven shaft that supports the rotation of the driven-side scroll is divided by a turning radius relative to the drive shaft that rotates the drive-side scroll. The drive shaft and the driven shaft are rotated at the same angular velocity in the same direction with an offset of only.

Japanese Patent No. 5443132

  The double-rotating scroll compressor may adopt a structure in which the driving scroll and the driven scroll are divided in the axial direction, and the tip of the spiral wall of the driving scroll and the driven scroll is the support member. May be employed. When such a structure is employed, in order to ensure the meshing of the spiral wall bodies, it is necessary to accurately position the phases around the rotation axis of the driving scroll and the driven scroll. At least two structures for positioning the phase are provided around the rotation axis, but depending on how the positioning structure is provided, the center of gravity is shifted from the rotation axis, causing noise and vibration.

  The present invention has been made in view of such circumstances, and provides a double-rotating scroll compressor and an assembling method thereof that can suppress the occurrence of noise and vibration due to a shift in the center of gravity of a scroll member as much as possible. The purpose is to do.

  In order to solve the above problems, the double-rotating scroll compressor and its assembling method of the present invention employ the following means.

  The double-rotating scroll compressor of the present invention is driven by a drive unit and is arranged on a driven-side end plate, a driving-side scroll member having a spiral drive side wall disposed on the driving-side end plate, and the drive A driven side scroll member having a driven side wall corresponding to the side wall body, and the driven side wall body meshing with the drive side wall body to form a compression chamber; the drive side scroll member; and the driven side scroll A synchronous drive mechanism for transmitting a driving force from the driving scroll member to the driven scroll member so that the member rotates in the same direction at the same angular velocity, and at the tip end in the axial direction of the driving side wall body , Positioning pins for positioning the phase around the rotation axis of the drive-side scroll member are provided around the rotation axis, and the rotation axis together with the positioning pin One or more dummy pins provided at equal angular intervals are provided, and / or a phase around the rotation axis of the driven scroll member is positioned at the axial end of the driven side wall body. Two positioning pins are provided around the rotation axis, and one or more dummy pins provided at equal angular intervals around the rotation axis are provided together with the positioning pin.

The drive side wall disposed on the end plate of the drive side scroll member and the corresponding driven side wall of the driven side scroll member are engaged with each other. The drive side scroll member is rotationally driven by the drive unit, and the driving force transmitted to the drive side scroll member is transmitted to the driven side scroll member via the synchronous drive mechanism. Thereby, the driven scroll member rotates and rotates with the same angular velocity in the same direction with respect to the drive scroll member. Thus, a double-rotation scroll compressor in which both the drive-side scroll member and the driven-side scroll member rotate is provided.
By using two positioning pins, positioning of the phase around the rotation axis is performed. Further, by providing the dummy pins so as to be equiangularly spaced around the rotation axis together with the positioning pins, the center of gravity can be determined around the rotation axis. Thereby, low noise and low vibration can be realized.

  The double-rotating scroll compressor of the present invention is driven by a drive unit and is arranged on a driven-side end plate, a driving-side scroll member having a spiral drive side wall disposed on the driving-side end plate, and the drive A driven side scroll member having a driven side wall corresponding to the side wall body, and the driven side wall body meshing with the drive side wall body to form a compression chamber; the drive side scroll member; and the driven side scroll A synchronous drive mechanism for transmitting a driving force from the driving scroll member to the driven scroll member so that the member rotates in the same direction at the same angular velocity, and at the tip end in the axial direction of the driving side wall body The assembly reference hole into which the assembly pin used at the time of assembly for positioning the phase around the rotational axis of the drive side scroll member is inserted is provided at two locations around the rotational axis. And at least one dummy hole provided so as to be equiangularly spaced around the rotation axis along with the assembly reference hole, and / or at the distal end in the axial direction of the driven side wall body, the driven side Two assembly reference holes into which assembly pins used during assembly for positioning the phase around the rotation axis of the scroll member are inserted are provided around the rotation axis, and equiangular intervals around the rotation axis together with the assembly reference hole. One or more dummy holes provided so as to be provided are provided.

  By using two assembly reference holes, positioning of the phase around the rotation axis is performed during assembly. Further, by providing dummy holes so as to be equiangularly spaced around the rotation axis along with the assembly reference hole, the center of gravity can be determined around the rotation axis. Thereby, low noise and low vibration can be realized.

  The double-rotating scroll compressor of the present invention is driven by a drive unit and is arranged on a driven-side end plate, a driving-side scroll member having a spiral drive side wall disposed on the driving-side end plate, and the drive A driven side scroll member having a driven side wall corresponding to the side wall body, and the driven side wall body meshing with the drive side wall body to form a compression chamber; the drive side scroll member; and the driven side scroll A synchronous drive mechanism for transmitting a driving force from the driving scroll member to the driven scroll member so that the member rotates in the same direction at the same angular velocity, and at the tip end in the axial direction of the driving side wall body , Positioning pins for positioning the phase around the rotation axis of the drive-side scroll member are made of the same material as the drive side wall body and are provided at two locations around the rotation axis. Alternatively, positioning pins for positioning the phase around the rotation axis of the driven scroll member are made of the same material as the driven side wall and are provided at two positions around the rotation axis at the tip in the axial direction of the driven side wall. It is characterized by being.

  By using two positioning pins, positioning of the phase around the rotation axis is performed. Since the positioning pin is made of the same material as the wall body, the center of gravity can be determined around the rotation axis. Thereby, low noise and low vibration can be realized.

  The double-rotating scroll compressor of the present invention is driven by a drive unit and is arranged on a driven-side end plate, a driving-side scroll member having a spiral drive side wall disposed on the driving-side end plate, and the drive A driven side scroll member having a driven side wall corresponding to the side wall body, and the driven side wall body meshing with the drive side wall body to form a compression chamber; the drive side scroll member; and the driven side scroll A synchronous drive mechanism that transmits a driving force from the drive side scroll member to the driven side scroll member so that the member rotates in the same direction at the same angular velocity, and the drive side wall body of the drive side end plate, An assembly reference hole into which an assembly pin used during assembly for positioning the phase around the rotational axis of the drive-side scroll member is inserted with respect to the rotational axis. Assembling pins used at the time of assembling in order to position the phase around the rotation axis of the driven scroll member on the surface opposite to the driven side wall of the driven end plate. Assembling reference holes into which are inserted are provided symmetrically with respect to the rotational axis.

Since two assembly reference holes are provided on the surface of the end plate opposite to the surface on which the wall is provided, positioning of the phase around the rotation axis is performed during assembly. Further, since the assembly reference hole is provided symmetrically with respect to the rotation axis, the center of gravity can be determined around the rotation axis. Thereby, low noise and low vibration can be realized.
Further, since the assembly reference hole is provided in the end plate, and it is not necessary to provide the assembly reference hole in the wall body, the position where the assembly reference hole is provided can be arbitrarily determined regardless of the shape of the wall body.

  Furthermore, in the double-rotating scroll compressor of the present invention, the drive-side scroll member has a first drive-side end plate and a first drive side wall, and is driven by the drive unit. A second drive side scroll portion having a second drive side end plate and a second drive side wall, and a tip in the axial direction of the first drive side wall and an axial direction of the second drive side wall Positioning of the phase around the rotation axis of the drive-side scroll member is performed between the front end and the front end.

  A positioning pin and a dummy pin are provided at the tip of the drive side wall. Also, an assembly reference hole and a dummy hole are provided at the tip of the drive side wall body.

  Furthermore, in the double-rotating scroll compressor according to the present invention, the driven scroll member is provided on one side surface of the driven side end plate, and a first driven side wall that meshes with the first driving side wall, and the driven side. A second driven side wall provided on the other side surface of the end plate and meshing with the second driving side wall, and is disposed with the first driving side end plate interposed therebetween, and the shaft of the first driven side wall A first support member that is fixed to the distal end in the direction and rotates together with the first driven side wall, and the second driving side end plate is disposed between the first support member and the second driven side wall in the axial direction. A second support member that is fixed to the second driven side wall and rotates together with the second driven side wall, and between the first driven side wall and the first support member, and the second driven side wall and the second The rotation axis of the driven scroll member between the support member and Wherein the phase of the positioning around is performed.

  A positioning pin and a dummy pin are provided between the driven side wall body and the support member. Further, an assembly reference hole and a dummy hole are provided between the driven side wall body and the support member.

  An assembly method of the double-rotation scroll compressor according to the present invention is an assembly method of the dual-rotation scroll compressor described above, the step of inserting and positioning the assembly pin into the assembly reference hole, and the driving It has the process of assembling in the state which positioned the side scroll member and / or the said driven side scroll member, and the process of removing the said assembly pin, It is characterized by the above-mentioned.

  After assembling, the assembly pin is inserted into the assembly reference hole for positioning, and then the assembly pin is removed. Therefore, no pin is inserted into the assembly reference hole and the dummy hole in the double-rotating scroll compressor after assembly.

  By positioning the center of gravity of the scroll member on the rotation axis, it is possible to suppress the generation of noise and vibration as much as possible.

It is the longitudinal section showing the double rotation scroll type compressor concerning one embodiment of the present invention. It is the top view which showed the drive side scroll part which concerns on 1st Embodiment. It is a side view in the arrow III-III of FIG. It is the top view which showed the drive side scroll part which concerns on 2nd Embodiment. FIG. 4 is a side view corresponding to FIG. 3 according to the second embodiment. It is the top view which showed the drive side scroll part which concerns on 3rd Embodiment. FIG. 4 is a side view corresponding to FIG. 3 according to a third embodiment. The rear view of the drive side scroll part which concerns on 4th Embodiment is shown, (a) is a 1st drive side scroll part, (b) is a 2nd drive side scroll part.

Hereinafter, an embodiment of the present invention will be described.
[First Embodiment]
FIG. 1 shows a double-rotating scroll compressor 1 according to the first embodiment. The double-rotating scroll compressor 1 can be used as a supercharger that compresses combustion air (fluid) supplied to an internal combustion engine such as a vehicle engine.

  The double-rotating scroll compressor 1 includes a housing 3, a motor (drive unit) 5 housed on one end side of the housing 3, a drive-side scroll member 70 and a driven-side scroll member housed on the other end side of the housing 3. 90.

  The housing 3 has a substantially cylindrical shape, and includes a motor accommodating portion 3 a that accommodates the motor 5, and a scroll accommodating portion 3 b that accommodates the scroll members 70 and 90.

  Cooling fins 3c for cooling the motor 5 are provided on the outer periphery of the motor housing 3a. A discharge port 3d for discharging compressed air (working fluid) is formed at the end of the scroll accommodating portion 3b. Although not shown in FIG. 1, the housing 3 is provided with an air suction port for sucking air (working fluid).

  The motor 5 is driven by power supplied from a power supply source (not shown). The rotation control of the motor 5 is performed by a command from a control unit (not shown). The stator 5 a of the motor 5 is fixed to the inner peripheral side of the housing 3. The rotor 5b of the motor 5 rotates around the drive side rotation axis CL1. A drive shaft 6 extending on the drive side rotation axis CL1 is connected to the rotor 5b. The drive shaft 6 is connected to the first drive side shaft portion 7 c of the drive side scroll member 70.

The drive-side scroll member 70 includes a first drive-side scroll portion 71 on the motor 5 side and a second drive-side scroll portion 72 on the discharge port 3d side.
The first drive side scroll portion 71 includes a first drive side end plate 71a and a first drive side wall 71b.
The first drive side end plate 71a is connected to a first drive side shaft portion 7c connected to the drive shaft 6, and extends in a direction orthogonal to the drive side rotation axis CL1. The first drive side shaft portion 7c is rotatably provided to the housing 3 via a first drive side bearing 11 that is a ball bearing.

  The first drive side end plate 71a has a substantially disc shape when viewed in plan. On the first driving side end plate 71a, a plurality of first driving side wall bodies 71b having a spiral shape are provided. The first drive side walls 71b are arranged at equal intervals around the drive side rotation axis CL1.

The second drive side scroll part 72 includes a second drive side end plate 72a and a second drive side wall 72b. Similar to the first drive side wall 71b described above, a plurality of second drive side walls 72b are formed in a spiral shape.
A cylindrical second drive side shaft portion 72c extending in the direction of the drive side rotation axis CL1 is connected to the second drive side end plate 72a. The second drive side shaft portion 72c is provided so as to be rotatable with respect to the housing 3 via the second drive side bearing 14 which is a ball bearing. A discharge port 72d is formed in the second drive side end plate 72a along the drive side rotation axis CL1.

  Between the second drive side shaft portion 72c and the housing 3, two seal members 16 are provided on the distal end side (left side in FIG. 1) of the second drive side shaft portion 72c with respect to the second drive side bearing 14. ing. The two seal members 16 and the second drive side bearing 14 are disposed with a predetermined interval in the direction of the drive side rotation axis CL1. Between the two seal members 16, a lubricant, for example, a grease which is a semi-solid lubricant is enclosed. The number of seal members 16 may be one. In this case, the lubricant is sealed between the seal member 16 and the second drive side bearing 14.

  The first drive side scroll part 71 and the second drive side scroll part 72 are fixed in a state where the ends (free ends) of the wall bodies 71b and 72b face each other. The first drive-side scroll portion 71 and the second drive-side scroll portion 72 are fixed to wall fixing bolts fastened to flange portions 73 provided at a plurality of locations in the circumferential direction so as to protrude outward in the radial direction. Wall body fixing part) 31.

FIG. 2 shows a plan view of the first drive side scroll portion 71. The second drive side scroll portion 71 has the same shape. As shown in the figure, a bolt hole 31a into which the wall fixing bolt 31 is inserted is provided at the end of winding of the wall 71b. In this embodiment, since three wall bodies 71b are provided, the wall body fixing bolts 31 are provided at three locations.
Positioning pin holes 40a into which the positioning pins 40 are inserted are provided on the sides of the two bolt holes 31a out of the three. A dummy pin hole 41a into which the dummy pin 41 is inserted is provided on the side of the remaining one bolt hole 31a. The dummy pin 41 is made of the same material as the positioning pin 40, but is loosely fitted so as not to position the dummy pin hole 41a.
The two positioning pins 40 and the one dummy pin 41 are provided at equal intervals around the drive side rotation axis CL1.

As shown in FIG. 1, the driven-side scroll member 90 has a driven-side end plate 90 a positioned substantially at the center in the axial direction (horizontal direction in the drawing). A discharge through-hole (through-hole) 90h is formed in the center of the driven side end plate 90a so that the compressed air flows to the discharge port 72d.
A first driven side wall 91b is provided on one side of the driven side end plate 90a, and a second driven side wall 92b is provided on the other side of the driven side end plate 90a. The first driven side wall body 91b installed on the motor 5 side from the driven side end plate 90a is meshed with the first driving side wall body 71b of the first driving side scroll portion 71, and from the driven side end plate 90a to the discharge port 3d side. The installed second driven side wall 92 b is engaged with the second drive side wall 72 b of the second drive side scroll portion 72.

  A first support member 33 and a second support member 35 are provided at both ends in the axial direction (horizontal direction in the figure) of the driven scroll member 90. The first support member 33 is disposed on the motor 5 side, and the second support member 35 is disposed on the discharge port 3d side.

  The first support member 33 is fixed to the outer peripheral end (free end) of the first driven side wall 91b by the first support fixing bolt 34, and the second support member 35 is the second driven side wall 92b. The second support fixing bolt 36 fixes the front end (free end) on the outer peripheral side of the first support fixing bolt.

  A shaft portion 33 a is provided on the center shaft side of the first support member 33, and the shaft portion 33 a is fixed to the housing 3 via a first support member bearing 37. A shaft portion 35 a is provided on the center shaft side of the second support member 35, and the shaft portion 35 a is fixed to the housing 3 via a second support member bearing 38. Thus, the driven scroll member 90 rotates around the driven rotation axis CL2 via the support members 33 and 35.

  A pin ring mechanism (synchronous drive mechanism) 15 is provided between the first support member 33 and the first drive side end plate 71a. That is, a rolling bearing (ring) is provided on the first drive side end plate 71a, and a pin member 15b is provided on the first support member 33. A driving force is transmitted from the driving side scroll member 70 to the driven side scroll member 90 by the pin ring mechanism 15, and both scroll members 70, 90 are rotated in the same direction at the same angular velocity.

FIG. 3 shows a side view taken along the arrow III-III in FIG. The first support member 33 is provided with three first support fixing bolts 34 at three locations. Positioning pin holes 42 a into which the positioning pins 42 are inserted are provided on the sides of the first support fixing bolts 34 at two locations. A dummy pin hole 43 a into which the dummy pin 43 is inserted is provided on the side of the remaining one first support fixing bolt 34. The dummy pin 43 is made of the same material as the positioning pin 42, but is loosely fitted so as not to position the dummy pin hole 43a.
The two positioning pins 42 and the one dummy pin 43 are provided at equal intervals around the driven side rotation axis CL2.
The second support member 35 has the same configuration.

The double-rotating scroll compressor 1 having the above-described configuration operates as follows.
When the drive shaft 6 is rotated around the drive-side rotation axis CL1 by the motor 5, the first drive-side shaft portion 7c connected to the drive shaft 6 also rotates, thereby causing the drive-side scroll member 70 to move to the drive-side rotation axis CL1. Rotate around. When the driving scroll member 70 rotates, the driving force is transmitted from the support members 33 and 35 to the driven scroll member 90 via the pin ring mechanism 15, and the driven scroll member 90 rotates about the driven rotation axis CL2. To do. At this time, when the pin member 15b of the pin ring mechanism 15 moves while being in contact with the inner peripheral surface of the circular hole, both scroll members 70 and 90 rotate in the same direction at the same angular velocity.
When the scroll members 70 and 90 rotate and rotate, the air sucked from the suction port of the housing 3 is sucked from the outer peripheral sides of the scroll members 70 and 90 and is formed by the scroll members 70 and 90. Is taken in. The compression chamber formed by the first drive side wall 71b and the first driven side wall 91b and the compression chamber formed by the second drive side wall 72b and the second driven side wall 92b are separately compressed. The Each compression chamber decreases in volume as it moves toward the center, and air is compressed accordingly. The air compressed by the first drive side wall 71b and the first driven side wall 91b passes through the discharge through hole 90h formed in the driven side end plate 90a, and passes through the second drive side wall 72b and the second driven side wall 92b. And the compressed air passes through the discharge port 72d and is discharged from the discharge port 3d of the housing 3 to the outside. The discharged compressed air is guided to an internal combustion engine (not shown) and used as combustion air.

According to this embodiment, there exist the following effects.
As shown in FIG. 2, the positioning of the phase around the driving side rotation axis CL1 is performed by using two positioning pins 40 on the driving side scroll member 70. Furthermore, the center of gravity is determined around the drive side rotation axis CL1 by providing the dummy pins 41 so as to be equiangularly spaced around the drive side rotation axis CL1 together with the positioning pin 40.
As shown in FIG. 3, by using two positioning pins 42 on the driven scroll member 90, the phase around the driven rotation axis CL2 is positioned. Furthermore, the center of gravity is determined around the driven rotation axis CL2 by providing the dummy pins 43 so as to be equiangularly spaced around the driven rotation axis CL2 together with the positioning pins 42.
As described above, low noise and low vibration can be realized.

[Second Embodiment]
The second embodiment is different from the first embodiment in that a positioning pin is not provided, and the other configurations are the same, so only the differences will be described.
As shown in FIG. 4, assembly reference holes 44a are provided on the sides of the three wall fixing bolts 31, respectively. These three assembly reference holes 44a are provided at equiangular intervals around the drive side rotation axis CL1. The assembly reference hole 44a is a hole used for inserting an assembly pin when the first drive side scroll part 71 and the second drive side scroll part 72 are assembled. Since positioning around the drive-side rotation axis CL1 is determined by two assembly pins, one of the three assembly reference holes 44a is a dummy hole that is not used during assembly. However, the three assembly reference holes 44a have the same shape.

  When assembling the first drive side scroll part 71 and the second drive side scroll part 72, first, an assembly pin is inserted into the two assembly reference holes 44a, and positioning is performed by combining both the scroll parts 71 and 72. . And both scroll parts 71 and 72 are fixed using the wall fixing bolt 31. FIG. Thereafter, the assembly pin is removed, and the assembly of both scroll portions 71 and 72 is completed.

As shown in FIG. 5, assembly reference holes 45a are provided on the sides of the three first support fixing bolts 34, respectively. These three assembly reference holes 45a are provided at equiangular intervals around the driven rotation axis CL2. The assembly reference hole 45a is a hole used for inserting an assembly pin when the first support member 33 and the driven scroll member 90 are assembled. Since positioning around the driven rotation axis CL2 is determined by two assembly pins, one of the three assembly reference holes 45a is a dummy hole that is not used during assembly. However, the three assembly reference holes 45a have the same shape.
The second support member 35 has the same configuration.

  When assembling the driven scroll member 90 and the first support member 33, first, assembly pins are inserted into the two assembly reference holes 45a, and the driven scroll member 90 and the first support member 33 are combined for positioning. Do. Then, the driven scroll member 90 and the first support member 33 are fixed using the first support fixing bolt 34. Thereafter, the assembly pin is removed, and the assembly of the driven scroll member 90 and the first support member 33 is completed. The assembly of the driven scroll member 90 and the second support member 35 is similarly performed.

According to this embodiment, there exist the following effects.
By using two assembly reference holes 44a and 45a, the phases around the rotation axes CL1 and CL2 are positioned during assembly. Further, by providing dummy holes (the same holes as the assembly reference holes 44a and 45a) so as to be equiangularly spaced around the rotation axes CL1 and CL2 together with the assembly reference holes 44a and 45a, the center of gravity can be obtained around the rotation axes CL1 and CL2. Can be determined. Thereby, low noise and low vibration can be realized.

[Third Embodiment]
Since the third embodiment is different from the first embodiment in the configuration of the positioning pins and the other configurations are the same, only the differences will be described.
As shown in FIG. 6, positioning pins 40 are provided on the sides of two of the three wall fixing bolts 31 as in the first embodiment. However, the positioning pin 40 is not provided on the side of the remaining one wall fixing bolt 31 and no pin hole is provided. The positioning pin 40 is made of the same material as that of the driving scroll member 70. That is, if the drive-side scroll member 70 is an aluminum alloy, the positioning pin 40 is also an aluminum alloy.

  As shown in FIG. 7, positioning pins 42 are provided on the sides of two of the three first support fixing bolts 34 as in the first embodiment. However, the positioning pin 42 is not provided on the side of the remaining one first support fixing bolt 34, and no pin hole is provided. The positioning pin 42 is made of the same material as the driven scroll member 90. That is, if the driven scroll member 90 is an aluminum alloy, the positioning pin 42 is also an aluminum alloy.

According to this embodiment, there exist the following effects.
By using the two positioning pins 40 and 42, the phase around the rotation axes CL1 and CL2 is positioned. Since the positioning pins 40 and 42 are made of the same material as the scroll members 70 and 90, the center of gravity can be determined around the rotation axes CL1 and CL2. Thereby, low noise and low vibration can be realized.

[Fourth Embodiment]
The fourth embodiment is different from the first embodiment in that positioning is performed at the tips of the wall bodies 71b, 72b, 91b, and 92b, but positioning is performed using an end plate. Since other configurations are the same, only the differences will be described.
As shown in FIG. 8 (a), the assembly reference hole 46a is formed on the surface of the first driven scroll portion 71 opposite to the surface on which the wall 71b of the end plate 71a is provided. Two are provided across CL1. Three bolt holes 31a are provided in the first driven scroll portion 71, but the positioning pin holes 40a and the dummy pin holes 41a as in the first embodiment are not provided on the sides of the bolt holes 31a. In the figure, reference numeral 15b1 denotes a pin hole into which the pin member 15b shown in FIG. 1 is inserted.

  As shown in FIG. 8 (b), the assembly reference hole 46a is formed on the drive-side rotation axis on the surface opposite to the surface on which the wall 72b of the end plate 72a of the second driven scroll portion 72 is provided. Two are provided across CL1. Three bolt holes 31a are provided in the second driven scroll portion 72, but the positioning pin holes 40a and the dummy pin holes 41a as in the first embodiment are not provided on the sides of the bolt holes 31a.

  When assembling the first drive side scroll part 71 and the second drive side scroll part 72, first, an assembly pin is inserted into each of the two assembly reference holes 46a, and the scroll parts 71 and 72 are combined and positioned. I do. And both scroll parts 71 and 72 are fixed using the wall fixing bolt 31. FIG. Thereafter, the assembly pin is removed, and the assembly of both scroll portions 71 and 72 is completed.

According to this embodiment, there exist the following effects.
Since two assembly reference holes 46a are provided on the surface of the end plates 71a, 72a opposite to the surface on which the walls 71b, 72b are provided, the phase around the rotation axis CL1 is positioned during assembly. Since the assembly reference hole 46a is provided symmetrically with respect to the rotation axis CL1, the center of gravity can be determined around the rotation axis CL1. Thereby, low noise and low vibration can be realized.
Further, since the assembly reference holes 46a are provided in the end plates 71a and 72a, and there is no need to provide the assembly reference holes in the walls 71b and 72b, the positions where the assembly reference holes are provided are independent of the shapes of the wall bodies 71b and 72b. It can be arbitrarily determined.

  In each of the above-described embodiments, the case where the wall bodies 71b, 72b, 91b, and 92b are formed as three strips has been described as an example, but the present invention is not limited to this. The invention can also be applied to an odd-numbered scroll compressor in which three or more lines, preferably positioning pins cannot be provided symmetrically with respect to the rotation axis.

  In the above-described embodiment, the double-rotating scroll type compressor is used as the supercharger, but the present invention is not limited to this, and can be widely used as long as it compresses fluid. For example, it can also be used as a refrigerant compressor used in an air conditioning machine. In addition, the scroll compressor 1 of the present invention can be applied to an air control device that uses the force of air as a brake system for a railway vehicle.

DESCRIPTION OF SYMBOLS 1 Double-rotating scroll type compressor 3 Housing 3a Motor accommodating part 3b Scroll accommodating part (housing)
3c Cooling fin 3d Discharge port 5 Motor (drive part)
5a Stator 5b Rotor 6 Drive shaft 7c First drive side shaft portion 11 First drive side bearing 14 Second drive side bearing 15 Pin ring mechanism (synchronous drive mechanism)
15b Pin member 16 Seal member 31 Wall body fixing bolt (wall body fixing portion)
31a Bolt hole 33 First support member 33a Shaft portion 34 First support fixing bolt 35 Second support member 35a Shaft portion 36 Second support fixing bolt 37 First support member bearing 38 Second support member bearing 40 Positioning pin 40a Positioning Pin hole 41 Dummy pin 41a Dummy pin hole 42 Positioning pin 42a Positioning pin hole 43 Dummy pin 43a Dummy pin hole 44a Assembly reference hole 45a Assembly reference hole 46a Assembly reference hole 70 Drive side scroll member 71 First drive side scroll part 71a First drive side end plate 71b 1st drive side wall 72 2nd drive side scroll part 72a 2nd drive side end plate 72b 2nd drive side wall 72c 2nd drive side shaft part 72d Discharge port 73 Flange part 90 Driven side scroll member 90a Driven side end plate 90h Discharge through hole (through hole)
91b 1st driven side wall 92b 2nd driven side wall CL1 Drive side rotational axis CL2 Driven side rotational axis

Claims (7)

A drive-side scroll member that is rotationally driven by the drive unit and has a spiral drive side wall disposed on the drive-side end plate;
A driven side scroll member disposed on the driven side end plate, having a driven side wall corresponding to the drive side wall, and forming a compression chamber by meshing the driven side wall with the drive side wall;
A synchronous drive mechanism for transmitting drive force from the drive side scroll member to the driven side scroll member so that the drive side scroll member and the driven side scroll member rotate in the same direction at the same angular velocity;
With
Positioning pins for positioning the phase around the rotation axis of the drive-side scroll member are provided around the rotation axis at the tip end in the axial direction of the drive side wall body, and equiangular around the rotation axis together with the positioning pin. One or more dummy pins provided at intervals are provided,
And / or
Positioning pins for positioning the phase around the rotation axis of the driven scroll member are provided around the rotation axis at the tip end in the axial direction of the driven side wall body, and are equiangular around the rotation axis together with the positioning pin. A double-rotating scroll type compressor, wherein one or more dummy pins provided at intervals are provided. A drive-side scroll member that is rotationally driven by the drive unit and has a spiral drive side wall disposed on the drive-side end plate;
A driven side scroll member disposed on the driven side end plate, having a driven side wall corresponding to the drive side wall, and forming a compression chamber by meshing the driven side wall with the drive side wall;
A synchronous drive mechanism for transmitting drive force from the drive side scroll member to the driven side scroll member so that the drive side scroll member and the driven side scroll member rotate in the same direction at the same angular velocity;
With
At the front end in the axial direction of the drive side wall body, two assembly reference holes around which the assembly pins used during assembly for positioning the phase around the rotation axis of the drive side scroll member are inserted are provided around the rotation axis. , One or more dummy holes provided at equiangular intervals around the rotation axis along with the assembly reference hole are provided,
And / or
At the front end in the axial direction of the driven side wall body, two assembly reference holes around which the assembly pins used for assembly for positioning the phase around the rotation axis of the driven scroll member are inserted are provided around the rotation axis. A double-rotating scroll compressor characterized in that at least one dummy hole provided at equal angular intervals around the rotation axis along with the assembly reference hole is provided. A drive-side scroll member that is rotationally driven by the drive unit and has a spiral drive side wall disposed on the drive-side end plate;
A driven side scroll member disposed on the driven side end plate, having a driven side wall corresponding to the drive side wall, and forming a compression chamber by meshing the driven side wall with the drive side wall;
A synchronous drive mechanism for transmitting drive force from the drive side scroll member to the driven side scroll member so that the drive side scroll member and the driven side scroll member rotate in the same direction at the same angular velocity;
With
Positioning pins for positioning the phase around the rotation axis of the drive side scroll member are made of the same material as the drive side wall at the tip in the axial direction of the drive side wall, and are provided at two locations around the rotation axis.
And / or
Positioning pins for positioning the phase around the rotation axis of the driven scroll member are made of the same material as the driven side wall at the tip end in the axial direction of the driven side wall, and are provided at two locations around the rotation axis. A double-rotating scroll compressor characterized by that. A drive-side scroll member that is rotationally driven by the drive unit and has a spiral drive side wall disposed on the drive-side end plate;
A driven side scroll member disposed on the driven side end plate, having a driven side wall corresponding to the drive side wall, and forming a compression chamber by meshing the driven side wall with the drive side wall;
A synchronous drive mechanism for transmitting drive force from the drive side scroll member to the driven side scroll member so that the drive side scroll member and the driven side scroll member rotate in the same direction at the same angular velocity;
With
An assembly reference hole into which an assembly pin used for assembly for positioning the phase around the rotational axis of the drive side scroll member is inserted in the surface opposite to the drive side wall of the drive side end plate. Are provided symmetrically with respect to
And / or
An assembly reference hole into which an assembly pin used for assembly for positioning the phase around the rotational axis of the driven scroll member is inserted in the surface opposite to the driven side wall of the driven side end plate. A double-rotating scroll compressor characterized in that it is provided symmetrically at two locations. The drive-side scroll member has a first drive-side end plate and a first drive side wall, and is driven by the drive unit, a first drive-side scroll portion, a second drive-side end plate, and a second drive side wall. A second drive side scroll part having a body,
The positioning of the phase around the rotational axis of the drive-side scroll member is performed between the tip in the axial direction of the first drive side wall and the tip in the axial direction of the second drive side wall. Item 5. A double-rotating scroll compressor according to any one of Items 1 to 4. The driven-side scroll member is provided on one side surface of the driven-side end plate, provided on the other side surface of the driven-side end plate, and on the other side surface of the driven-side end plate. A second driven side wall that meshes with the side wall,
A first support member disposed with the first drive side end plate interposed therebetween, fixed to an axial front end side of the first driven side wall body, and rotated together with the first driven side wall body; and the second drive A second support member disposed with a side end plate interposed therebetween, fixed to the distal end side in the axial direction of the second driven side wall body, and rotated together with the second driven side wall body,
Positioning of the phase around the rotation axis of the driven scroll member is performed between the first driven side wall body and the first support member and between the second driven side wall body and the second support member. The double-rotating scroll compressor according to claim 5, wherein A method of assembling a double-rotating scroll compressor according to claim 2 or 4,
Inserting and positioning the assembly pin in the assembly reference hole;
Assembling the driven scroll member and / or the driven scroll member in a positioned state;
Removing the assembly pin;
A method of assembling a double-rotating scroll compressor characterized by comprising:

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