JP2016037861A - Motor compressor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique for stably suppressing vibration propagation to a housing from an object to which the housing is fixed.SOLUTION: A motor compressor 10 includes a compression mechanism 22, motors (30, 34) for driving the compression mechanism 22, a cylindrical housing 12, one or more supporting members 54, and one or more first vibration-proof members 50. The housing 12 stores the compression mechanism 22 and the motors (30, 34). The supporting members 54 supporting the housing 12 are fixed to an object 60. At least one of the first vibration-proof members 50 is arranged between the housing 12 and the supporting member 54. The housing 12 is kept in the state of non-contact with the supporting members 54 by the first vibration-proof members 50, while being kept in the state of non-contact with the object. The first vibration-proof members 50 are formed into a hollow shape.SELECTED DRAWING: Figure 2

Description

  The technology disclosed in this specification relates to an electric compressor.

  Patent Document 1 discloses a cylindrical electric compressor mounted on a vehicle and used for an air conditioner. The electric compressor includes a housing, two support members, and a vibration isolation member. The housing accommodates a motor and a compression mechanism driven by the motor. The two support members are formed in a semicircular arc shape, and support the housing by sandwiching the housing from both sides of the side wall of the housing. The support member is fixed to an object (for example, a vehicle frame or an engine) in the engine room. That is, the housing is fixed to the object via the support member. The vibration isolation member is disposed between the support member and the housing, and is configured so that the support member and the housing do not directly contact each other.

Japanese Unexamined Patent Publication No. 2013-224652

  According to the configuration of Patent Document 1, it is possible to suppress the vibration from the compression mechanism and the motor of the electric compressor from being transmitted from the housing to the object in the engine room by the vibration isolation member. However, in Patent Document 1, solid rubber is used as a vibration-proof member. In this case, since the rubber generates heat relatively easily due to vibration and becomes high temperature, the durability of the vibration isolating member is lowered by heat, and vibration transmitted to the object may not be sufficiently suppressed.

  In this specification, the technique which can suppress stably the vibration transmitted to the target object to which a housing is fixed from a housing is provided.

  An electric compressor disclosed in the present specification includes a compression mechanism, a motor that drives the compression mechanism, a cylindrical housing, one or more support members, and one or more first vibration isolation members. The housing accommodates the compression mechanism and the motor. The support member supports the housing and is fixed to the object. At least one of the first vibration isolation members is disposed between the housing and the support member. The housing is maintained in a non-contact state with the support member by the first vibration isolation member and is maintained in a non-contact state with the object. The first vibration isolation member has a hollow closed space therein.

  In this electric compressor, the first vibration isolation member is disposed between the housing and the support member, and the housing and the support member are maintained in a non-contact state by the first vibration isolation member. For this reason, it is suppressed by the 1st anti-vibration member that the vibration of a housing is transmitted to a target object via a support member. Moreover, since the housing is maintained in a non-contact state with the object, the vibration of the housing is suppressed from being directly transmitted to the object. Further, the first vibration isolation member has a hollow closed space therein. In other words, a space closed from the space outside the first vibration isolation member is formed inside the first vibration isolation member. For this reason, the material filled in the first vibration isolation member is made of a material that is less likely to generate heat due to vibration than the first vibration isolation member, thereby suppressing heat generation due to vibration compared to a solid vibration isolation member. be able to. For this reason, the fall of durability of the 1st vibration isolator by heat can be suppressed, and the vibration transmitted to a target object from a housing can be controlled stably.

  In addition, another electric compressor disclosed in this specification includes a compression mechanism, a motor that drives the compression mechanism, a cylindrical housing, one or more support members, and one or more second vibration isolation members. Is provided. The housing accommodates the compression mechanism and the motor. The support member supports the housing and is fixed to the object. The second vibration isolation member is disposed between the housing and the support member. The housing is kept out of contact with the support member by the second vibration isolation member. The cross section of the second vibration isolation member when the second vibration isolation member is cut in a plane orthogonal to the direction in which the second vibration isolation member extends has an opening on the side opposite to the housing side in the radial direction of the cross section. C-shaped. The support member covers the opening in an airtight and liquid-tight manner. The space surrounded by the support member and the second vibration isolation member is closed from the space outside the support member and the second vibration isolation member.

  In this electric compressor, the cross section of the second vibration isolation member is formed in a C shape having an opening, and the opening is covered airtight and liquid tightly by the support member. Therefore, the material filled in the space surrounded by the support member and the second vibration isolating member is a material that is less likely to generate heat due to vibration than the second vibration isolating member, thereby suppressing the heat generation of the second vibration isolating member due to vibration. Can do. Also with this configuration, vibration transmitted from the housing to the object can be stably suppressed.

  According to the electric compressor disclosed in the present specification, it is possible to stably suppress the vibration from the compression mechanism and the motor of the electric compressor being transmitted from the housing to the object.

  Details of the technology disclosed in this specification and further improvements will be described in detail in the detailed description and examples.

Sectional drawing which cut | disconnected the electric compressor of Example 1 by the plane containing the central axis of a housing. Sectional drawing in the II-II line of FIG. The figure which shows a mode before attaching the assembly which consists of a support member and the vibration isolator before air injection | pouring to a housing. The figure which shows a mode after arrange | positioning the assembly which consists of a support member and the vibration isolator before air injection | pouring in the predetermined position of a housing. Sectional drawing which cut | disconnected the electric compressor of the modification 1 by the plane substantially orthogonal to an axial direction. It is sectional drawing which cut | disconnected the electric compressor of the modification 2 by the plane substantially orthogonal to an axial direction, Comprising: Sectional drawing which shows the state by which the air pressure of each vibration isolator is maintained in the predetermined range. It is sectional drawing which cut | disconnected the electric compressor of the modification 2 by the plane substantially orthogonal to an axial direction, Comprising: Sectional drawing which shows the state in which the air pressure of one vibration isolator was less than the predetermined range. (A) shows the vibration isolating member in the VIII (a) -VIII (a) line of FIG. 6, and sectional drawing of the vicinity, (b) is in the VIII (b) -VIII (b) line of FIG. A cross-sectional view of the vibration-proof member and its vicinity is shown. Sectional drawing which cut | disconnected the electric compressor of Example 2 by the plane substantially orthogonal to an axial direction. Sectional drawing which cut | disconnected the electric compressor of the modification 3 by the plane substantially orthogonal to an axial direction. Sectional drawing which cut | disconnected the electric compressor of Example 3 by the plane substantially orthogonal to an axial direction. Sectional drawing which cut | disconnected the electric compressor of the modification 4 by the plane substantially orthogonal to an axial direction. Sectional drawing which cut | disconnected the electric compressor of Example 4 by the plane substantially orthogonal to an axial direction. Sectional drawing which cut | disconnected the electric compressor of the modification 5 by the plane substantially orthogonal to an axial direction. Sectional drawing which cut | disconnected the vibration isolator and support member of the electric compressor of Example 5 in the plane substantially orthogonal to the direction where a vibration isolator extends.

  The main features of the embodiments described below are listed. The technical elements described below are independent technical elements and exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. Absent.

(Characteristic 1) In the electric compressor disclosed in the present specification, the first vibration isolation member is annular and may circulate around the housing. According to this configuration, the first vibration isolation member can be assembled to the housing by fitting the first vibration isolation member into the housing.

(Characteristic 2) In the electric compressor disclosed in the present specification, the support member is annular and may circulate around the housing. According to this configuration, the support member can be assembled to the housing by fitting the support member into the housing. Further, since the support member supports the housing over the entire circumference thereof, the housing can be reliably supported.

(Feature 3) In addition to Feature 2, in the electric compressor disclosed in the present specification, the outer peripheral surface of the first vibration isolation member may be fixable to the inner peripheral surface of the support member. According to this configuration, it is possible to configure an assembly in which the support member and the first vibration isolation member are integrated by fixing the first vibration isolation member to the support member. For this reason, by assembling the assembly to the housing, the first vibration isolation member and the support member can be simultaneously assembled to the housing, and the assembling work can be simplified.

(Feature 4) The electric compressor disclosed in the present specification may include a plurality of support members. The plurality of support members are formed in a non-annular shape and may be arranged around the housing. According to this configuration, each of the plurality of support members can be directly arranged at a desired position of the housing (strictly, a desired position of the first vibration isolation member).

(Feature 5) In addition to the feature 4, in the electric compressor disclosed in the present specification, the outer peripheral surface of the first vibration isolation member may be fixable to the inner peripheral surface of the plurality of support members. According to this structure, the assembly | attachment operation | work to the housing of a 1st anti-vibration member and a partial support member can be simplified.

(Characteristic 6) In the electric compressor disclosed in the present specification, at least a part of the first vibration isolation member is in contact with both the housing and the object, and the housing is subject to the first vibration isolation member. It may be kept in non-contact with the object. According to this configuration, since the support member does not have to be in contact with the entire first vibration isolation member, the material of the support member can be reduced.

(Feature 7) In the electric compressor disclosed in the present specification, at least one of the one or more first vibration isolation members may be disposed between the housing and the object. The housing may be kept out of contact with the object by the first vibration isolation member. According to this configuration, since the first vibration isolation member and the first vibration isolation member disposed between the housing and the support member can be separately disposed directly at predetermined positions of the housing, It can suppress that the freedom degree of design falls.

(Characteristic 8) In the electric compressor disclosed in this specification, the first vibration isolation member may be filled with gas or liquid. The first vibration isolation member may be configured to be capable of injecting gas or liquid therein. According to this configuration, since the gas or liquid in the first vibration isolation member serves as a buffer, the vibration of the object is appropriately absorbed by the gas or liquid in the first vibration isolation member and the first vibration isolation member. it can. Moreover, the gas or liquid with which the inside of the first vibration isolation member is made of a material that is less likely to generate heat due to vibration than the first vibration isolation member can suppress the first vibration isolation member from generating heat due to vibration. In addition, by periodically injecting gas or liquid into the first vibration isolation member, the internal pressure of the first vibration isolation member can be maintained within a desired range. For this reason, the first vibration isolation member can be used over a long period of time without deteriorating the vibration isolation performance.

(Feature 9) In the electric compressor disclosed in the present specification, in addition to the feature 8, the inside of the first vibration isolation member may be filled with air. When air is less likely to generate heat due to vibration than the first vibration isolation member, it is possible to suppress an increase in temperature of the first vibration isolation member due to vibration.

(Characteristic 10) In the electric compressor disclosed in the present specification, a concave portion is formed on one of the outer peripheral surface of the first vibration isolation member and the inner peripheral surface of the support member, and the outer peripheral surface of the first vibration isolation member is A convex portion may be formed on the other inner peripheral surface of the support member, and the concave portion and the convex portion may be configured to be fitted. According to this structure, it can suppress that a support member displaces with respect to a 1st vibration isolator by fitting a convex part to a recessed part. For this reason, even if a housing vibrates with vibration of a compression mechanism and a motor, the non-contact state of a housing and a supporting member can be maintained stably.

(Characteristic 11) The electric compressor disclosed in the present specification may further include a preliminary vibration isolation member disposed between the first vibration isolation member and the support member. The preliminary vibration isolation member may be able to contact the housing when the first vibration isolation member is deformed. The housing may be kept out of contact with the support member and the object even when the first vibration isolation member is deformed. When the filler inside the first vibration isolating member comes out and the first vibration isolating member is deformed, the vibration isolating performance of the first vibration isolating member is deteriorated. In this configuration, when the first vibration isolation member is deformed, the preliminary vibration isolation member comes into contact with the housing. For this reason, even if the first vibration isolating member is deformed and the vibration isolating performance is lowered, the vibration of the housing is prevented from being transmitted to the object by the preliminary vibration isolating member.

(Characteristic 12) In the electric compressor disclosed in the present specification, a groove is provided on the outer surface of the housing, and the first vibration isolation member may be fitted in the groove. According to this configuration, the first vibration isolation member can be easily positioned by the groove.

  The electric compressor 10 of Example 1 is demonstrated with reference to FIGS. 1-4. The electric compressor 10 is mounted on an electric vehicle, a hybrid vehicle, or the like and used for an air conditioner. 1, 3, and 4, the engine 60 is not shown, and some of the hatching in the cross-sectional view is omitted. In FIG. 2, illustration of the inside of the housing 12 is omitted, and some hatching in the cross-sectional view is omitted. As shown in FIG. 1, the electric compressor 10 includes a substantially cylindrical housing 12, a rotary shaft 39 rotatably supported by the housing 12, an electric motor (30, 34) accommodated in the housing 12, and The compression mechanism 22, tubes 50 a and 50 b that circulate around the side wall of the housing 12, and rims 54 a and 54 b (see FIG. 2) that support the housing 12 are provided. The rotating shaft 39 extends along the axial direction of the housing 12 (horizontal direction in FIG. 1). The electric motor (30, 34) is disposed on one end side (right end side in FIG. 1) of the rotating shaft 39, and the compression mechanism 22 is disposed on the other end side of the rotating shaft 39. That is, the electric motors (30, 34) and the compression mechanism 22 are arranged side by side along the axial direction of the housing 12. When electric power is supplied to the electric motor (30, 34) and the electric motor (30, 34) drives the rotary shaft 39, the compression mechanism 22 is driven by the rotary shaft 39. The electric compressor 10 may be integrated with an inverter (not shown).

  The housing 12 includes a bottomed cylindrical motor housing 16, a front housing 18 mounted in the motor housing 16, and a discharge housing 20 that closes an opening end (left end in FIG. 1) of the motor housing 16.

  The motor housing 16 is made of a metal material (for example, aluminum). A suction port 16 a is formed on the side wall of the motor housing 16. The suction port 16 a is located in the vicinity of the bottom wall 16 b of the motor housing 16. On the bottom wall 16b of the motor housing 16, a slide bearing 47 that rotatably supports one end (the right end in FIG. 1) of the rotary shaft 39 is disposed.

  The front housing 18 is made of a metal material (for example, aluminum). When the front housing 18 is mounted in the motor housing 16, the space in the motor housing 16 is partitioned into a space that houses the electric motor (30, 34) and a space that houses the compression mechanism 22. The front housing 18 is provided with a slide bearing 45 that rotatably supports the other end (left end in FIG. 1) of the rotary shaft 39.

  The discharge housing 20 is formed in a bottomed cylindrical shape, and is formed of a metal material (for example, aluminum). A discharge port 20 a is formed in the discharge housing 20. When the discharge housing 20 is attached to the motor housing 16, a discharge chamber 20 b is formed between the compression mechanism 22 and the discharge housing 20. The discharge chamber 20b communicates with the outside through the discharge port 20a.

  The rotating shaft 39 is accommodated in the housing 12. As described above, one end of the rotary shaft 39 is rotatably supported by the slide bearing 47 provided in the motor housing 16, and the other end of the rotary shaft 39 is rotatable by the slide bearing 45 provided in the front housing 18. It is supported by.

  The electric motors (30, 34) are accommodated in the space on the bottom wall 16b side in the motor housing 16 (the space on the right side of the front housing 18 in FIG. 1). The electric motor (30, 34) includes a rotor 34 fixed to the rotating shaft 39 and a stator coil 30 around which a coil wire is wound, which is disposed on the outer peripheral side of the rotor 34. The electric motors (30, 34) are electrically connected to a drive circuit (not shown) and are driven by AC power supplied from the drive circuit.

  The compression mechanism 22 is accommodated in a space on the opening end side in the motor housing 16 (a space on the left side of the front housing 18 in FIG. 1). The compression mechanism 22 includes a fixed scroll 26 fixed to the motor housing 16 and a turning scroll 24 facing the fixed scroll 26. A compression chamber 22 a is formed between the fixed scroll 26 and the orbiting scroll 24 by meshing the tooth surface of the fixed scroll 26 and the tooth surface of the orbiting scroll 24 with each other. The volume of the compression chamber 22 a changes as the turning scroll 24 turns. The compression chamber 22a communicates with the space in which the electric motors (30, 34) are accommodated to suck the refrigerant, and communicates with the discharge chamber 20b to discharge the refrigerant.

  As shown in FIG. 2, the tubes 50a and 50b are each formed as a single ring (ie, as one member) in a substantially annular shape, and are made of rubber material (for example, natural rubber (NR), synthetic rubber (IR), Butadiene rubber (BR), butyl rubber (IIR), ethylene propylene diene rubber (EPDM), silicon rubber, etc.). As shown in FIGS. 1 and 2, the tubes 50a and 50b are hollow, and the internal space of the tubes 50a and 50b is closed from the external space of the tubes 50a and 50b. Valves 52a and 52b are attached to the tubes 50a and 50b, respectively, so that air can be injected into the tubes 50a and 50b via the valves 52a and 52b, and air can be extracted from the tubes 50a and 50b. . In the state shown in FIGS. 1 and 2, an appropriate amount of air is injected into the tubes 50a and 50b, and the air pressure is set within a predetermined range. As shown in FIG. 1, five grooves 51 a and 51 b are provided along the circumferential direction on the outer peripheral surfaces of the tubes 50 a and 50 b (that is, the radially outer surfaces of the tubes 50 a and 50 b). Is formed. These grooves 51a and 51b are formed at equal intervals in the central axis direction of the substantially annular tubes 50a and 50b (strictly speaking, at equal intervals on the outer peripheral surfaces of the tubes 50a and 50b). The tubes 50a and 50b are not limited to rubber materials, and may be formed of, for example, alpha gel (registered trademark). The tubes 50a and 50b correspond to an example of “first vibration isolation member”, and the grooves 51a and 51b correspond to an example of “concave portion”.

  Grooves 16c and 16d are formed in the side wall of the motor housing 16 so as to go around the side wall. The groove 16c is located closer to the electric motor (30, 34) than the center in the axial direction of the housing 12, and the groove 16d is located closer to the compression mechanism 22. The plane including the groove 16c and the plane including the groove 16d are substantially orthogonal to the axial direction of the housing 12, respectively. The tubes 50a and 50b are disposed along the grooves 16c and 16d, respectively. The diameters of the inner peripheral surfaces of the tubes 50a and 50b (that is, the radially inner surfaces of the tubes 50a) set to the air pressure within a predetermined range are the portions of the motor housing 16 where the grooves 16c and 16d are formed. The diameter is substantially the same. By forming the grooves 16c and 16d in the motor housing 16, the tube 50 can be easily positioned. Further, the diameter of the motor housing 16 is smaller in the portion where the grooves 16c and 16d are formed than in the portion where the grooves 16c and 16d are not formed. For this reason, by arranging the tube 50 in the grooves 16c and 16d, the radial size of the electric compressor 10 can be reduced as compared with the configuration in which the tube 50 is arranged in a portion where the grooves 16c and 16d are not formed. .

  As shown in FIG. 2, each of the rims 54a and 54b is formed as a single ring (ie, as one member) in a substantially annular shape, and is formed of a metal material (for example, aluminum). As shown in FIG. 1, the cross sections of the rims 54a and 54b are curved in a substantially arc shape. Specifically, the inner peripheral surfaces of the rims 54a and 54b are curved so as to follow the outer peripheral surfaces of the tubes 50a and 50b. On the inner peripheral surfaces of the rims 54a and 54b, five protrusions 56a and 56b are respectively formed along the entire circumference along the circumferential direction. These protrusions 56a and 56b are formed at equal intervals in the central axis direction of the substantially annular rims 54a and 54b (strictly speaking, at equal intervals on the outer peripheral surfaces of the rims 54a and 54b). The interval between adjacent protrusions 56a or 56b is substantially the same as the interval between adjacent grooves 51a or 51b. The widths and heights of the protrusions 56a and 56b are substantially the same as the widths and depths of the grooves 51a and 51b. The diameters of the inner peripheral surfaces of the rims 54a and 54b are substantially the same as the diameters of the outer peripheral surfaces of the tubes 50a and 50b. Therefore, each projection 56a of the rim 54a is fitted in each groove 51a of the tube 50a, and each projection 56b of the rim 54b is fitted in each groove 51b of the tube 50b. Thereby, the displacement of the rim 54 with respect to the tube 50 is suppressed. The tubes 50 a and 50 b are disposed between the rims 54 a and 54 b and the motor housing 16. When the air pressure of the tubes 50a and 50b is set within a predetermined range, the tubes 50a and 50b are in contact with both the rims 54a and 54b and the motor housing 16 without a gap. As shown in FIG. 1, the tubes 50a and 50b are interposed between the rims 54a and 54b and the motor housing 16, whereby the rims 54a and 54b and the motor housing 16 are kept in a non-contact state. The rims 54a and 54b correspond to an example of a “support member”, and the protrusions 56a and 56b correspond to an example of a “convex portion”.

  Plate-shaped attachment portions 58a and 58b are formed on the rims 54a and 54b in the upper and lower portions in FIG. 1, respectively. The wide surfaces of the attachment portions 58 a and 58 b are located on a plane parallel to the plane including the axis of the housing 12. Projections 62 projecting toward the left side in FIG. 2 are formed on the side surface of the engine 60 at the upper and lower portions in FIG. The protrusion 62 extends in the depth direction of FIG. The protruding portion 62 is located at a position where the protruding surface of the protruding portion 62 (the left surface in FIG. 2) abuts one of the wide surfaces (the right surface in FIG. 2) of the mounting portions 58a and 58b. The rims 54 a and 54 b are fixed to the engine 60 by fastening the mounting portions 58 a and 58 b to the projecting surface of the projecting portion 62 with screws 64. Accordingly, the housing 12 is fixed to the engine 60 in a state where the housing 12 is supported by the rims 54a and 54b. Since the rims 54 a and 54 b make a round of the side wall of the motor housing 16, the housing 12 can be reliably supported. A part of the housing 12 (the right part in FIG. 2) is located in the space between the two protrusions 62. As shown in FIG. 2, the rims 54a and 54b are in contact with the engine 60 only at the attachment portions 58a and 58b. The engine 60 corresponds to an example of “object”.

  Next, a method of assembling the tubes 50a and 50b and the rims 54a and 54b to the motor housing 16 will be described with reference to FIGS. First, the rims 54a and 54b and the tubes 50a and 50b in a state where the air inside is removed (that is, a state where the air pressure is lower than a predetermined range) are prepared. Next, the projections 56a and 56b of the rims 54a and 54b are fitted into the grooves 51a and 51b of the tubes 50a and 50b. Since the tubes 50a and 50b are made of a rubber material, when the protrusions 56a and 56b are fitted into the grooves 51a and 51b, the protrusions 56a and 56b are formed in the groove 51a due to friction generated between the grooves 51a and 51b and the protrusions 56a and 56b. , 51b becomes difficult to come off. As a result, the outer peripheral surfaces of the tubes 50a and 50b are fixed to and integrated with the inner peripheral surfaces of the rims 54a and 54b (hereinafter, the tubes 50a and 50b fixed to the rims 54a and 54b are connected to the tube assemblies 55a and 55b). Also called).

  Subsequently, the tube assembly 55a is fitted into the side wall of the motor housing 16 from the bottom wall 16b side of the motor housing 16 and disposed in the groove 16c. Similarly, the tube assembly 55b is fitted into the side wall of the motor housing 16 from the discharge housing 20 side and disposed in the groove 16d (see FIG. 4). At the time when the tube assemblies 55a and 55b are assembled to the motor housing 16, the air in the tubes 50a and 50b has been removed, so the diameter of the inner peripheral surface of the tubes 50a and 50b is the diameter of the housing 12 (strictly speaking, the bottom The diameter of the housing 12 from the wall 16b to the groove 16c and the diameter of the housing 12 from the end face of the discharge housing 20 to the groove 16d) are larger. For this reason, the tube assemblies 55 a and 55 b can be easily fitted into the motor housing 16.

  Subsequently, air is injected into the tubes 50a and 50b from the valves 52a and 52b. The air is injected until the air pressure in the tubes 50a and 50b reaches a value within a predetermined range. Then, the tubes 50a and 50b swell radially inward (that is, on the housing 12 side), and are deformed by coming into contact with the grooves 16c and 16d, respectively. Therefore, an elastic force acts on the tubes 50 a and 50 b radially inward with respect to the motor housing 16. Since the tubes 50a and 50b are formed of a rubber material, when the tubes 50a and 50b come into contact with the grooves 16c and 16d, the tubes 50a and 50b are formed into the grooves 16c due to friction generated between the tubes 50a and 50b and the grooves 16c and 16d. , 16d becomes difficult to shift. As a result, the tube assemblies 55 a and 55 b are assembled to the motor housing 16. As described above, the tubes 50a and 50b and the rims 54a and 54b can be assembled to the motor housing 16 at a time by assembling the tubes 50a and 50b and the rims 54a and 54b into the motor housing 16 in an integrated state. Assembling work can be simplified. Subsequently, the attachment portions 58 a and 58 b of the rims 54 a and 54 b are fixed to the engine 60 with screws. Accordingly, the housing 12 is fixed to the engine 60 in a state where the housing 12 is supported by the rims 54a and 54b. Note that air may be injected into the tubes 50a and 50b after the rims 54a and 54b are fixed to the engine 60.

  Next, the operation of the electric compressor 10 described above will be described. When AC power is supplied to the electric motor (30, 34) from a drive circuit (not shown), the rotor 34 and the rotating shaft 39 start to rotate together. When the rotary shaft 39 rotates, the orbiting scroll 24 turns and the volume of the compression chamber 22a changes. The refrigerant sucked from the suction port 16 a flows in the space in the motor housing 16 in the axial direction and is sucked into the compression chamber 22 a of the compression mechanism 22. The refrigerant sucked into the compression chamber 22 a is compressed as the turning scroll 24 rotates. The refrigerant compressed in the compression chamber 22a is discharged into the discharge chamber 20b and discharged outside the housing 12 through the discharge port 20a. The air pressure of the tubes 50a and 50b is regularly checked, and air is injected from the valves 52a and 52b as necessary. Thereby, the air pressure of the tubes 50a and 50b can be maintained at a value within a predetermined range suitable for absorbing vibration. For this reason, tube 50a, 50b can be used over a long period, without reducing the vibration proof performance.

  In the electric compressor 10 described above, the tubes 50a and 50b are disposed between the motor housing 16 and the rims 54a and 54b, and both are kept in a non-contact state by the tubes 50a and 50b. For this reason, the vibrations of the compression mechanism 22 and the electric motors (30, 34) are suppressed by the tubes 50a, 50b from being transmitted from the motor housing 16 (that is, the housing 12) to the engine 60 via the rims 54a, 54b. . Similarly, the vibration of the engine 60 transmitted to the housing 12 is suppressed by the tubes 50a and 50b. Further, the tubes 50a and 50b are hollow and filled with air. For this reason, it becomes easy to suppress the heat_generation | fever by a vibration compared with the case where a solid tube is used. For this reason, it can suppress that durability of tube 50a, 50b falls with a heat | fever, and can suppress stably the vibration transmitted to the engine 60 from the housing 12 over a long period of time.

  Moreover, in said electric compressor 10, tube 50a, 50b is a substantially annular shape. For this reason, the tubes 50 a and 50 b can be stably disposed on the side wall of the motor housing 16. In particular, in the present embodiment, since the tubes 50a and 50b are formed of a rubber material, the tubes 50a and 50b are arranged so as to go around the side wall of the motor housing 16, whereby the tubes 50a and 50b are moved to the motor housing 16. Compared with a configuration in which the tubes 50a and 50b are arranged only on a part of the side wall of the motor, it is possible to suppress the displacement of the tubes 50a and 50b with respect to the motor housing 16 by vibration, and vibration of the compression mechanism 22 and the electric motor (30, 34) Can be appropriately suppressed from being transmitted from the housing 12 to the engine 60.

  In the electric compressor 10 described above, the projections 56a and 56b of the rims 54a and 54b are fitted into the grooves 51a and 51b of the tubes 50a and 50b, thereby fixing the tubes 50a and 50b to the rims 54a and 54b. Thereby, it can suppress that rim 54a, 54b displaces with respect to tube 50a, 50b. For this reason, even if the rims 54a and 54b vibrate due to the vibration of the engine 60 or the motor housing 16 vibrates, the tubes 50a and 50b do not deviate from the rims 54a and 54b. The non-contact state with the housing 16 can be reliably maintained.

(Modification 1) Next, Modification 1 will be described with reference to FIG. Hereinafter, only differences from the first embodiment will be described, and detailed description of the same configurations as those of the first embodiment will be omitted. The same applies to other examples and modifications unless otherwise specified. In FIG. 5, the illustration of the inside of the housing 12 is omitted. The same applies to FIGS. In the following, a tube and a rim having substantially the same configuration are arranged in the groove 16c and the groove 16d of the motor housing 16. The same applies to other embodiments and modifications.

  In the first modification, the shape of the tube is different from that in the first embodiment. That is, in Modification 1, two substantially arcuate tubes 150a and 152a are arranged between the rim 54a and the motor housing 16 instead of the substantially annular tube 50a. The tubes 150a and 152a are hollow, and the space inside the tubes 150a and 152a is closed from the space outside them. The tubes 150a and 152a are filled with air, and their air pressure is kept within a predetermined range. The procedure for assembling the tubes 150a, 152a and the rim 54a to the housing 12 is the same as in the first embodiment.

  Also with this configuration, the same effects as those of the first embodiment can be obtained. In addition, since the two tubes are arranged between the rims 54a and 54b and the motor housing 16, maintenance of the tubes 150a and 152a is facilitated. That is, since the size of each tube 150a, 152a is smaller than that of a substantially annular tube, the replacement operation of the tubes 150a, 152a when a failure occurs in the tubes 150a, 152a is relatively easy, and maintenance is easy. It becomes. Moreover, since it is sufficient to replace only the tube in which a problem has occurred, the cost required for the replacement can be reduced. Note that the number of tubes disposed between the rim 54 and the motor housing 16 is not limited to two, and may be three or more.

(Modification 2) Next, Modification 2 will be described with reference to FIGS. The second modification is different from the first modification in that the seat 70 is disposed between the rim 254a and the tube 150a and between the rim 254a and the tube 152a. FIG. 6 shows a state in which the air pressure of the tubes 150a and 152a is set within a predetermined range, and FIG. 7 shows a state in which air has fallen from the tube 152a and the air pressure has fallen below the predetermined range. 8A shows a cross-sectional view of the tube 152a in FIG. 6, and FIG. 8B shows a cross-sectional view of the tube 152a in FIG. 8A and 8B are cross-sectional views cut along a plane orthogonal to the direction in which the tube 152a extends. As shown in FIGS. 6 and 8A, the sheet 70 is disposed between the rim 254a and the tube 152a, and the sheet 70 is in contact with both the rim 254a and the tube 152a. The sheet 70 is formed in a substantially arc shape and is formed of a rubber material (for example, EPDM, silicon rubber, or the like). The sheet 70 is solid and its cross section is curved in a substantially C shape. The sheet 70 is disposed so as to cover the outer peripheral surface of the tube 152a. On the outer peripheral surface of the sheet 70, three grooves 71 are formed in the entire circumferential direction along the circumferential direction (that is, the direction in which the sheet 70 extends). Three protrusions 256 a are formed on the inner peripheral surface of the rim 254 a at positions corresponding to the grooves 71. Each protrusion 256 a is fitted in each groove 71. As shown in FIG. 8A, when the air pressure of the tube 152 a is kept within a predetermined range, both end surfaces of the seat 70 are not in contact with the side walls of the motor housing 16. In addition, the sheet | seat 70 is not restricted to a rubber material, For example, you may be formed by alpha gel (trademark). The sheet 70 corresponds to an example of a “preliminary vibration isolation member”. The seat 70 between the rim 254a and the tube 150a is also arranged with the same configuration as described above.

  Next, the positional relationship between the tubes 150a and 152a and the motor housing 16 when the air pressure of the tube 152a falls below the predetermined range while the air pressure of the tube 150a is kept within the predetermined range will be described. When the air pressure of the tubes 150a and 152a is maintained within a predetermined range, the tubes 150a and 152a are radially inward of the motor housing 16 (that is, in a direction toward the position O1 of the central axis of the motor housing 16). ) Is acting. Here, as shown in FIG. 7, when air escapes from the tube 152a, the motor housing 16 is pressed against the tube 152a by the elastic force of the tube 150a. As a result, the motor housing 16 moves to the right in FIG. As the air pressure of the tube 152a decreases, the amount of movement of the motor housing 16 increases. When the air pressure of the tube 152a falls below a predetermined range and the motor housing 16 moves until the position of the central axis thereof changes from the position O1 to the position O2, both end surfaces of the seat 70 arranged on the outer peripheral surface of the tube 152a are the motor housing. 16 abuts against the side wall (see FIG. 8B).

  In the above electric compressor, when the air pressure of the tube 152a decreases with time, the motor housing 16 moves to the tube 152a side by the elastic force of the tube 150a. As a result, both end surfaces of the seat 70 are the side walls of the motor housing 16. Abut. That is, the seat 70 contacts both the rim 254 a and the motor housing 16. Accordingly, the seat 70 suppresses the vibration of the housing 12 from being transmitted to the engine 60 via the rim 254a. That is, even if the air pressure of the tube 152a decreases and the vibration isolation performance decreases, the seat 70 can continue to suppress vibration transmission to the engine 60 of the housing 12. For this reason, it can suppress over a long period that the vibration of the housing 12 is transmitted to the engine 60, and the reliability of an electric compressor improves. In this modification, the sheet 70 is also disposed on the outer peripheral surface of the tube 150a. For this reason, when the air pressure of the tube 150a falls below the predetermined range while the air pressure of the tube 152a is kept within the predetermined range, the motor housing 16 moves to the tube 150a side, and the seat 70 of the tube 150a moves to the motor 150. Abuts against the housing 16. Thereby, it is possible to suppress the vibration of the housing 12 from being transmitted to the engine 60.

  Next, Example 2 will be described with reference to FIG. In the second embodiment, the shape of the rim is different from that of the first embodiment. That is, in the second embodiment, the rim is constituted by two substantially semicircular arc-shaped rims 354a and 356a. The rim 354a and the rim 356a have substantially the same shape. Plate-shaped attachment portions 358a and 360a are respectively formed on the upper and lower portions of the rims 354a and 356a in FIG. When the wide surface of the attachment portion 358a of the rim 354a and the wide surface of the attachment portion 360a of the rim 356a are brought into contact with each other, the rim 354a and the rim 356a constitute a substantially annular rim.

  When assembling the tube 50a and the rims 354a, 356a to the motor housing 16, first, the tube 50a in a state where the air has been removed is fitted from the bottom wall 16b of the motor housing 16 and disposed in the groove 16c, and then from a valve not shown. Air is injected into the tube 50a until a predetermined range of air pressure is reached (that is, in this embodiment, the valve is directly attached to the tube 50a without a rim). Next, the rim 354a and the rim 356a are disposed on the outer peripheral surface of the tube 50a. Specifically, the rims 354 a and 356 a are arranged so as to sandwich the side walls from both sides of the motor housing 16. The diameter of the outer peripheral surface of the tube 50a when the air pressure is set within a predetermined range is substantially the same as the diameter of a circle formed by the inner peripheral surface of the rim 354a and the inner peripheral surface of the rim 356a. For this reason, when the rims 354a and 356a are arranged on the tube 50a, the wide surface of the mounting portion 358a of the rim 354a and the wide surface of the mounting portion 360a of the rim 356a abut. Subsequently, the attachment portion 358 a and the attachment portion 360 a are fixed to the projecting surface of the projecting portion 62 of the engine 60 with the screw 64. That is, the rims 354 a and 356 a are connected in the circumferential direction by the screw 64. Accordingly, the housing 12 is fixed to the engine 60 in a state where the housing 12 is supported by the rims 354a and 356a.

  Also with this configuration, the same effects as those of the first embodiment can be obtained. In this embodiment, the tube 50a is disposed in the groove 16c of the motor housing 16 and air is injected before the rims 354a and 356a are attached. For this reason, the tube 50 a is not easily displaced with respect to the motor housing 16. Therefore, when the rims 354a and 356a are attached to the tube 50a, the tube 50a is not easily displaced, and the rims 354a and 356a can be attached to the tube 50a relatively easily. That is, when the tube assembly in which no air is injected into the tube is disposed in the motor housing 16, the tube assembly is not fixed to the motor housing 16 at the time when the air is injected into the tube. For this reason, the tube assembly may be displaced from a predetermined position of the housing 12 in the process of injecting air into the tube. However, according to the above configuration, the displacement of the tube 50 a is less likely to occur, and the tube 50 a and the rims 354 a and 356 a can be appropriately assembled at predetermined positions of the motor housing 16. The number of rims is not limited to two and may be three or more.

(Modification 3) Next, Modification 3 will be described with reference to FIG. In the third modification, the tubes 150 a and 152 a of the first modification are arranged between the rims 354 a and 356 a of the second embodiment and the motor housing 16. When the rims 354a and 356a and the tubes 150a and 152a are assembled to the motor housing 16, first, the tube assemblies 355a and 357a in which the tubes 150a and 152a are respectively fixed and integrated to the inner peripheral surfaces of the rims 354a and 356a are integrated into the motor. It arrange | positions in the groove | channel 16c so that the side wall of the housing 16 may be inserted | pinched. Next, with the wide surface of the attachment portion 358a of the tube assembly 355a and the wide surface of the attachment portion 360a of the tube assembly 357a in contact with each other, the attachment portions 358a and 360a are screwed to the engine 60 and the tubes 150a, Air is injected into 152a.

  Also with this configuration, the same effects as those of the first embodiment can be obtained. In the third modification, the tube assemblies 355 a and 357 a can be directly disposed in the groove 16 c of the motor housing 16. In other words, it is not necessary to fit the tube assemblies 355a and 357a from one end surface of the housing 12 (for example, the bottom wall 16b of the motor housing 16) and move it to a predetermined position (for example, the groove 16c). For this reason, the tube assemblies 355a and 357a can be assembled regardless of the shape of the outer surface of the housing 12, and a reduction in the degree of freedom in designing the housing 12 can be suppressed. That is, when the tube, the rim, or the tube assembly is formed in a single ring shape, the inner diameter of the member fitted into the housing 12 is set to the maximum diameter of the housing 12 from one end face of the housing 12 to a predetermined position. The diameter of the surface cannot be made larger, and the degree of freedom in designing the housing 12 may be reduced. However, according to said structure, it can suppress that the freedom degree of design of the housing 12 falls.

  Next, Embodiment 3 will be described with reference to FIG. The third embodiment is different from the first embodiment in that the tube 50 a is also disposed between the motor housing 16 and the engine 60. Specifically, a rim 454a is disposed on a part of the outer peripheral surface of the tube 50a. Attachment portions 458a are formed on the upper and lower portions of the rim 454a in FIG. The housing 12 is fixed to the engine 60 by fastening the mounting portion 458 a to the projecting surface of the projecting portion 62 of the engine 60 with a screw 64. A portion of the tube 50 a where the rim 454 a is not disposed on the outer peripheral surface thereof is located in a space between the two protruding portions 62. In the space, the tube 50 a is in surface contact with the engine 60 at three locations, that is, the side walls of the two protrusions 62 and the bottom wall between the two protrusions 62. The housing 12 is kept out of contact with the engine 60 by the tube 50a. When assembling the tube 50a and the rim 454a to the motor housing 16, first, the tube assembly 455a in which the tube 50a is fixed and integrated to the inner peripheral surface of the rim 454a is fitted from the bottom wall 16b of the motor housing 16, It arrange | positions in the groove | channel 16c. Subsequently, the attachment portion 458a is screwed to the engine 60, and air is injected into the tube 50a. The tube 50a is configured to come into surface contact with the engine 60 at the three locations described above when the air pressure reaches a value within a predetermined range.

  Also with this configuration, the same effects as those of the first embodiment can be obtained. In the present embodiment, the housing 12 is supported not only by the rim 454a but also by the wall surface of the engine 60 by using the wall surface of the engine 60. For this reason, the size of the rim 454a can be shortened in the circumferential direction, and the material of the rim 454a can be reduced while reliably supporting the housing 12.

(Modification 4) Next, Modification 4 will be described with reference to FIG. Hereinafter, only differences from the third embodiment will be described, and detailed description of the same configurations as those of the third embodiment will be omitted. In the fourth modification, the shape of the tube is different from that in the third embodiment. That is, in Modification 4, a substantially arc-shaped tube 450a is disposed between the rim 454a and the motor housing 16, and a substantially arc-shaped tube 452a is disposed between the engine 60 and the motor housing 16. ing. The tube 452a is in surface contact with the engine 60 at three locations, that is, the side walls of the two protrusions 62 and the bottom wall between the two protrusions 62.

  When assembling the tubes 450a and 452a and the rim 454a to the motor housing 16, first, the tube 452a in a state where air is removed is disposed in the groove 16c. Specifically, the tube 452a is disposed on the right half groove 16c when the housing 12 is viewed from the bottom wall 16b side in the axial direction (that is, the right half of the outer peripheral surface of the motor housing 16 in FIG. 12). . Next, the housing 12 in which the tube 452 a is disposed is disposed in a space between the two projecting portions 62 of the engine 60. Subsequently, air is injected into the tube 452a. Thereby, the tube 452a is in surface contact with the engine 60 at the three locations described above. Subsequently, the tube assembly in which the tube 450a is fixed to the inner peripheral surface of the rim 454a is disposed on the left side of the groove 16c in FIG. 12, the mounting portion 458a is screwed to the engine 60, and air is injected into the tube 450a. Also with this configuration, the same effects as those of the third embodiment can be achieved. Moreover, in the modification 4, since the circumferential direction length of the tube 450a is comparatively short, it can be easily fixed to the rim 454a. Moreover, since the said tube assembly and the tube 452a are substantially circular arc shape and can be arrange | positioned directly in the groove | channel 16c, it can suppress that the freedom degree of design of the housing 12 falls. The number of tubes disposed between the engine 60 and the motor housing 16 is not limited to one and may be two or more.

  Next, Example 4 will be described with reference to FIG. In the fourth embodiment, the shape of the rim is different from that of the first embodiment. That is, in Example 4, two substantially arc-shaped rims 554a and 556a are disposed on the outer peripheral surface of the tube 50a. That is, the rims 554a and 556a are located on the same circumference. The rim 554a is disposed in the upper part of FIG. 13, and the rim 556a is disposed in the lower part of FIG. 13 (that is, opposite to the rim 554a with respect to the motor housing 16). That is, in Example 4, a part of the outer peripheral surface of the tube 50a is exposed to the outside. Mounting portions 558a and 560a are formed on the rims 554a and 556a, respectively. The attachment portions 558 a and 560 a are fastened to the engine 60 by screws 64. As a result, the housing 12 is fixed to the engine 60 in a state of being supported by the rims 554a and 556a.

  When the tube 50a and the rims 554a and 556a are assembled to the motor housing 16, first, the tube assembly 555a having the tube 50a fixed to the inner peripheral surface of the rims 554a and 556a is fitted from the bottom wall 16b of the motor housing 16, and the groove 16c. To place. Subsequently, air is injected into the tube 50 a and the attachment portions 558 a and 560 a are fixed to the engine 60 with screws. Also with this configuration, the same effects as those of the first embodiment can be obtained. Further, since the rim 554a and the rim 556a are disposed at positions facing each other with the housing 12 in between, the housing 12 can be stably supported from both sides of the housing 12. Note that a portion of the outer peripheral surface of the tube 50 a exposed to the outside may be in contact with the engine 60.

(Modification 5) Next, Modification 5 will be described with reference to FIG. Hereinafter, only differences from the fourth embodiment will be described, and detailed description of the same configurations as those of the fourth embodiment will be omitted. In the fifth modification, the shape of the tube is different from that in the fourth embodiment. That is, in Modification 5, a substantially arcuate tube 650a is disposed between the rim 554a and the motor housing 16, and a substantially arcuate tube 652a is disposed between the rim 556a and the motor housing 16. ing. The tubes 650a and 652a have substantially the same shape, and the circumferential lengths thereof are substantially the same as the circumferential lengths of the rims 554a and 556a. When assembling the tubes 650a and 652a and the rims 554a and 556a to the motor housing 16, first, the tube assemblies 655a and 657a having the tubes 650a and 652a fixed to the inner peripheral surfaces of the rims 554a and 556a, respectively, It arrange | positions in the groove | channel 16c so that may be inserted | pinched. Next, air is injected into the tubes 650a and 652a. Subsequently, the mounting portions 558 a and 560 a of the rims 554 a and 556 a are screwed to the engine 60. Also with this configuration, the same effects as those of the fourth embodiment can be achieved. Further, since the tube assemblies 655a and 657a are substantially arc-shaped and can be arranged directly in the groove 16c, it is possible to suppress a reduction in the degree of freedom in designing the housing 12.

  Next, Example 5 will be described with reference to FIG. In the fifth embodiment, the cross-sectional shapes of the tube 750a and the rim 754a are different from the first embodiment. That is, the tube 50a is a hollow member, and the cross section thereof is substantially annular, but the cross section of the tube 750a is the outer peripheral side (that is, the side opposite to the motor housing 16 side in the radial direction of the cross section of the tube 750a). ) Having an opening 700 in a substantially C shape. The opening 700 is formed over the entire circumference of the tube 750a. The rim 754a covers the opening 700 in an airtight and liquid-tight manner over the entire circumference. The tube 750a and the rim 754a constitute a substantially annular hollow tube assembly 755a. The space inside the tube assembly 755a is closed from the space outside the tube assembly 755a. The tube assembly 755a is filled with air. Air can be injected into the tube assembly 755a from a valve 752a attached to the rim 754a. By periodically injecting air, the air pressure of the tube assembly 755a can be kept within a predetermined range. . When the air pressure of the tube assembly 755a is within a predetermined range, the motor housing 16 is maintained in a non-contact state with the rim 754a by the tube 750a. The method of assembling the tube assembly 755a to the motor housing 16 is the same as in the first embodiment. The tube 750a corresponds to an example of a “second vibration isolation member”. Also with this configuration, the same effects as those of the first embodiment can be obtained. Further, in this configuration, it is not necessary to form a protrusion or a groove in order to fix the tube 750a to the rim 754a. For this reason, the rim 754a and the tube 750a can be manufactured relatively easily.

  As mentioned above, although the Example of the technique which this specification discloses was described in detail, these are only illustrations, and the electric compressor which this specification discloses has changed and changed the said Example variously. included.

  For example, in the above-described embodiments and modifications, the tube 50 is filled with air, but the configuration is not limited thereto. The tube 50 may be filled with a material that has excellent vibration absorption and is less likely to generate heat due to vibration than the material that forms the tube 50. For example, the tube 50 may be filled with a gas such as nitrogen, a liquid such as ethylene glycol or propylene glycol, a gel, or a resin such as a silicone resin.

  Moreover, the tube 50 may not be substantially annular as long as it is a shape along the outer surface of the housing 12. For example, the tube 50 may be substantially elliptical or substantially rectangular. Further, the housing 12 may not be substantially cylindrical, and may be, for example, a substantially elliptical cylinder. Further, the tube 50 may be disposed so as to go around the housing 12 through both end surfaces in the axial direction of the housing 12 (that is, the end surface of the discharge housing 20 and the bottom wall 16b of the motor housing 16).

  Further, as long as the rim 54 is not displaced with respect to the tube 50 by vibration of the engine 60, the protrusion 56 and the groove 51 may not be formed over the entire circumference of the rim 54 and the tube 50. The rim 54 may be fixed to other members (for example, a vehicle frame) instead of the engine 60.

  Further, the seat 70 of the second modification can be applied to a configuration in which two or more substantially arcuate tubes are arranged in the grooves 16 c and 16 d of the motor housing 16. For this reason, the sheet 70 may be arranged on the outer peripheral surface of the tube even in the configurations shown in the third modification (FIG. 10), the fourth modification (FIG. 12), and the fifth modification (FIG. 14). Including tube 452a). Alternatively, the sheet 70 may be fixed to the outer peripheral surface of the tube by forming a groove on one of the sheet 70 and the tube, forming a protrusion on the other, and fitting the groove and the protrusion. Moreover, the sheet | seat 70 does not need to be arrange | positioned at all the tubes. For example, the sheet 70 may be disposed only in a tube that is relatively easily evacuated or relatively deteriorated.

  In the second embodiment, the tubes 50a are first arranged in the motor housing 16 and then the rims 354a and 356a are arranged. However, the method is not limited to this method. For example, a tube in which the wide surface of the attachment portion 358a of the rim 354a and the wide surface of the attachment portion 360a of the rim 356a are brought into contact with each other and the tube 50a in a state where air is removed is fixed to the inner peripheral surfaces of the rims 354a and 356a. After the assembly is prepared, the tube assembly is disposed in the motor housing 16 and screwed to the engine 60, air may be injected into the tube 50a.

  In the third modification, the tube assemblies 355a and 357a are prepared and assembled to the motor housing 16, but the present invention is not limited to this method. For example, after the tubes 150a and 152a are arranged in the groove 16c and air is injected into the tubes 150a and 152a, the rims 354a and 356a are arranged on the outer peripheral surfaces of the tubes 150a and 152a, and the mounting portions 358a and 360a are connected to the engine 60. It may be fixed with screws.

  In the fourth embodiment, the tube assembly 555a is prepared and assembled to the motor housing 16, but the present invention is not limited to this method. For example, after the tube 50a is disposed in the motor housing 16 and air is injected into the tube 50a, the rims 554a and 556a are disposed on the outer peripheral surface of the tube 50a, and the mounting portions 558a and 560a are screwed to the engine 60. Good.

  In the fifth embodiment, the number of tubes 750a disposed between the rim 754a and the motor housing 16 is one. However, the number of tubes 750a is not limited to this. For example, two or more substantially arc-shaped tubes are disposed. May be. In this case, both end surfaces of the substantially arc-shaped tube in the circumferential direction are closed, and the space surrounded by the tube and the rim 754a is closed from these external spaces.

  Specific examples of the present invention have been described in detail above, but these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes of the specific examples illustrated above. The technical elements described in this specification or the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technology illustrated in the present specification or the drawings achieves a plurality of objects at the same time, and has technical utility by achieving one of the objects.

10: electric compressor, 12: housing, 16b: bottom wall, 16c, 16d: groove, 22: compression mechanism, 30: stator coil, 34: rotor, 50: tube, 51: groove, 54: rim, 56: protrusion , 60: engine, 70: seat, 354a, 356a: rim, 452a: tube, 700: opening, 750a: tube

Claims (14)

A compression mechanism;
A motor for driving the compression mechanism;
A cylindrical housing that houses the compression mechanism and the motor;
One or more support members that support the housing and are fixed to the object;
At least one of which includes one or more first vibration isolation members disposed between the housing and the support member,
The housing is maintained in a non-contact state with the support member by the first vibration isolation member, and is maintained in a non-contact state with the object.
The first vibration isolation member is an electric compressor having a hollow closed space therein.   The electric compressor according to claim 1, wherein the first vibration isolation member has an annular shape and makes a round around the housing.   The electric compressor according to claim 1, wherein the support member has an annular shape and makes a round around the housing.   The electric compressor according to claim 3, wherein an outer peripheral surface of the first vibration isolation member can be fixed to an inner peripheral surface of the support member. A plurality of the support members;
The electric compressor according to claim 1, wherein the plurality of support members are formed in a non-annular shape and are arranged around the housing.   The electric compressor according to claim 5, wherein an outer peripheral surface of the first vibration isolation member can be fixed to inner peripheral surfaces of the plurality of support members. The first vibration isolating member is in contact with both the housing and the object at least in part,
The electric compressor according to claim 2, wherein the housing is kept in non-contact with the object by the first vibration isolation member. At least one of the one or more first vibration isolation members is disposed between the housing and the object;
The electric compressor according to claim 1, wherein the housing is maintained in a non-contact state with the object by the first vibration isolation member. The first vibration isolation member is filled with gas or liquid,
The electric compressor according to any one of claims 1 to 8, wherein the first vibration isolation member is configured to be capable of injecting the gas or the liquid therein.   The electric compressor according to claim 9, wherein the gas is air. A recess is formed on one of the outer peripheral surface of the first vibration isolation member and the inner peripheral surface of the support member,
A convex portion is formed on the other of the outer peripheral surface of the first vibration isolation member and the inner peripheral surface of the support member,
The electric compressor according to any one of claims 1 to 10, wherein the concave portion and the convex portion are configured to be fitted. A preliminary vibration isolating member disposed between the first vibration isolating member and the support member;
The preliminary vibration isolation member can contact the housing when the first vibration isolation member is deformed;
The electric compressor according to claim 1, wherein the housing is maintained in a non-contact state with the support member and the object even when the first vibration isolation member is deformed.   The electric compressor according to any one of claims 1 to 12, wherein a groove is provided on an outer surface of the housing, and the first vibration isolation member is fitted into the groove. A compression mechanism;
A motor for driving the compression mechanism;
A cylindrical housing that houses the compression mechanism and the motor;
One or more support members that support the housing and are fixed to the object;
One or more second vibration isolation members disposed between the housing and the support member;
With
The housing is maintained in a non-contact state with the support member by the second vibration isolation member,
The cross section of the second vibration isolation member when the second vibration isolation member is cut in a plane perpendicular to the direction in which the second vibration isolation member extends is on the opposite side of the housing in the radial direction of the cross section. C-shaped with an opening,
The support member covers the opening in an airtight and liquid-tight manner,
The electric compressor, wherein a space surrounded by the support member and the second vibration isolation member is closed from a space outside the support member and the second vibration isolation member.

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