Compressor

Abstract

The present invention provides a compressor capable of suppressing thermal degradation of an elastic body of an anti-vibration member attached to an attachment leg. A housing (1) that accommodates the compression part (3); a mounting leg (25) that protrudes from the outer surface of the housing (1) and has a mounting hole (31); and an anti-vibration member (41) that is fitted in the mounting hole (31). The anti-vibration member (41) has: an outer cylinder (43) held on the inner peripheral surface (31a) of the mounting hole (31); an inner cylinder (45) which is disposed on the inside of the outer cylinder (43) and through which a fastening member (93) for fastening the mounting leg (25) to the mounting object (91) is inserted; and an elastic body (47) which is disposed between the outer cylinder (43) and the inner cylinder (45) and connects the outer cylinder (43) and the inner cylinder (45). One of the inner peripheral surface (31a) of the mounting hole (31) and the outer peripheral surface (43a) of the outer cylinder (43) is provided with a convex part (33) which abuts against the other of the inner peripheral surface (31a) and the outer peripheral surface (43a).

Description

Technical Field

[0001] The present invention relates to a compressor. Background Art

[0002] A conventional compressor is disclosed in Patent Document 1. The compressor includes a compression section, a housing, mounting feet, and vibration damping members.

[0003] The compression section compresses a fluid. The housing houses the compression section. The mounting feet project from the outer surface of the housing and have mounting holes. The vibration damping members are fitted into the mounting holes of the mounting feet.

[0004] The vibration damping members have an outer cylinder, an inner cylinder, and an elastic body. The outer cylinder is held on the inner peripheral surface of the mounting hole. The inner cylinder is disposed inside the outer cylinder and allows a fastening and connecting member for fastening and connecting the mounting feet to a mounting object to pass through. The elastic body is disposed between the outer cylinder and the inner cylinder and connects the two.

[0005] The compressor is fixed to a mounting object such as a vehicle by fastening and connecting the mounting feet to the mounting object such as a vehicle using the fastening and connecting member passing through the inner cylinder of the vibration damping member. Further, during operation of the compressor, vibration generated in the compression section is absorbed by the elastic body of the vibration damping member fitted into the mounting hole. As a result, according to this compressor, transmission of vibration generated in the compression section to a vehicle or the like can be suppressed.

[0006] Prior Art Documents

[0007] Patent Documents

[0008] Patent Document 1: Japanese Utility Model Laid-Open No. 63-98490 Summary of the Invention

[0009] Problems to be Solved by the Invention

[0010] However, in the above-described conventional compressor, during operation of the compressor, the fluid compressed by the compression section becomes high temperature, and thus there is a problem that heat of the high-temperature fluid is transmitted from the housing housing the compression section to the vibration damping member, and the elastic body such as rubber is thermally deteriorated. For example, if the elastic body such as rubber softens due to heat, the elastic body with reduced strength is likely to break. Further, if the elastic body hardens due to long-term exposure to high temperature, the vibration damping characteristics are likely to deteriorate.

[0011] The present invention has been made in view of the above-described conventional situation, and the problem to be solved is to provide a compressor capable of suppressing thermal deterioration of the elastic body of the vibration damping member fitted to the mounting feet.

[0012] Means for Solving the Problems

[0013] The compressor of the present invention is characterized by including:

[0014] a compression section that compresses a fluid;

[0015] A housing that houses the compression part;

[0016] Mounting feet that protrude from the outer surface of the housing and have mounting holes; and

[0017] A vibration-proof member that is assembled in the mounting hole,

[0018] The vibration-proof member has: an outer cylinder that is held on the inner peripheral surface of the mounting hole; an inner cylinder that is disposed inside the outer cylinder and through which a fastening connection member for fastening and connecting the mounting foot to a mounting object is inserted; and an elastic body that is disposed between the outer cylinder and the inner cylinder and connects the two.

[0019] A convex portion that abuts against the other of the inner peripheral surface and the outer peripheral surface is provided on one of the inner peripheral surface of the mounting hole and the outer peripheral surface of the outer cylinder.

[0020] In the compressor of the present invention, the outer cylinder of the vibration-proof member is held on the inner peripheral surface of the mounting hole of the mounting foot, and a convex portion that abuts against the other of the inner peripheral surface of the mounting hole and the outer peripheral surface of the outer cylinder is provided on at least one of the inner peripheral surface of the mounting hole and the outer peripheral surface of the outer cylinder. Therefore, the inner peripheral surface of the mounting hole contacts the outer peripheral surface of the outer cylinder via the convex portion, and on the other hand, it becomes non-contact near the convex portion. As a result, the contact area between the inner peripheral surface of the mounting hole and the outer peripheral surface of the outer cylinder is reduced, so that heat transfer from the mounting foot to the outer cylinder and further from the mounting foot to the elastic body disposed inside the outer cylinder can be suppressed.

[0021] Therefore, in the compressor according to the present invention, thermal degradation of the elastic body of the vibration-proof member assembled to the mounting foot can be suppressed.

[0022] Preferably, a convex portion is provided on the inner peripheral surface of the mounting hole.

[0023] In this case, by forming the convex portion on the inner peripheral surface of the mounting hole when forming the mounting hole in the mounting foot, the formation of the convex portion becomes easy. In addition, when forming a convex portion on the outer peripheral surface of the outer cylinder of the vibration-proof member, it is necessary to align the convex portion in the circumferential direction to a desired position when inserting the vibration-proof member into the mounting hole, but since the convex portion is formed on the inner peripheral surface of the mounting hole, such alignment is not required.

[0024] Preferably, the convex portion extends in the axial direction of the mounting hole.

[0025] In this case, tilting of the vibration-proof member held in the mounting hole with respect to the axial direction can be suppressed.

[0026] Preferably, a plurality of convex portions are provided at intervals in the circumferential direction of the mounting hole.

[0027] In this case, it is possible to suppress eccentricity of the vibration isolator held in the mounting hole within the mounting hole.

[0028] Preferably, a plurality of peak portions extending in the axial direction of the mounting hole and arranged at intervals in the circumferential direction of the mounting hole are provided at the protruding front end of the convex portion.

[0029] In this case, corresponding to the number of the peak portions, the contact portion where the inner peripheral surface of the mounting hole contacts the outer peripheral surface of the outer cylinder, that is, the peak value of the surface pressure between the inner peripheral surface of the mounting hole and the outer peripheral surface of the outer cylinder increases. Therefore, it is advantageous for suppressing relative rotation of the vibration isolator with respect to the mounting hole.

[0030] Preferably, a resistance portion for increasing the sliding resistance of the convex portion sliding in the circumferential direction of the mounting hole is provided on the other of the inner peripheral surface of the mounting hole and the outer peripheral surface of the outer cylinder.

[0031] In this case, the circumferential sliding resistance between the inner peripheral surface of the mounting hole and the outer peripheral surface of the outer cylinder increases due to the resistance portion. Therefore, relative rotation of the vibration isolator with respect to the mounting hole can be suppressed.

[0032] Preferably, the resistance portion is constituted by a plurality of groove portions extending in the axial direction of the mounting hole and arranged at intervals in the circumferential direction of the mounting hole.

[0033] In this case, the force for the vibration isolator to relatively rotate with respect to the mounting hole can be reduced by the sliding resistance when the convex portion passes through the groove portion in the circumferential direction. Therefore, relative rotation of the vibration isolator with respect to the mounting hole can be suppressed.

[0034] It may be that the housing has a discharge port for discharging the fluid compressed by the compression portion to the outside. Additionally, it may be that a plurality of mounting feet are provided on the outer surface of the housing. And preferably, a vibration isolator is provided on at least the mounting foot closest to the discharge port among the plurality of mounting feet.

[0035] In this case, thermal deterioration of the elastomer in the vibration isolator closest to the discharge port can be suppressed.

[0036] Advantages of the Invention

[0037] According to the compressor of the present invention, thermal deterioration of the elastomer of the vibration isolator assembled to the mounting foot can be suppressed. Brief Description of the Drawings

[0038] Figure 1 It is a schematic diagram showing the compressor of Embodiment 1.

[0039] Figure 2 It relates to the compressor of Embodiment 1, and is a perspective view schematically showing the compressor with the damper, which is a vibration isolator, omitted.

[0040] Figure 3Relates to the compressor of Embodiment 1, and is a partial cross-sectional view showing a part of the housing and the mounting feet.

[0041] Figure 4 Relates to the compressor of Embodiment 1, and is a partial cross-sectional view showing a part of the housing, the mounting feet, and the shock absorber.

[0042] Figure 5 Relates to the compressor of Embodiment 1, and is a cross-sectional view of the shock absorber.

[0043] Figure 6 Relates to the compressor of Embodiment 1, and is Figure 5 Cross-sectional view taken along line A-A of

[0044] Figure 7 Relates to the compressor of Embodiment 2, and is a partial cross-sectional view showing a part of the housing and the mounting feet.

[0045] Figure 8 Relates to the compressor of Embodiment 2, and is a partial cross-sectional view showing a part of the housing, the mounting feet, and the shock absorber.

[0046] Figure 9 Relates to the compressor of Embodiment 2, and is a side view showing the shock absorber.

[0047] Description of reference numerals

[0048] 1 Housing

[0049] 3 Compression section

[0050] 21 Discharge port

[0051] 25 Mounting feet

[0052] 31 Mounting holes

[0053] 31a Inner peripheral surface

[0054] 33, 63 Protrusions

[0055] 41 Shock absorber (vibration-proof member)

[0056] 43 Outer cylinder

[0057] 43a Outer peripheral surface

[0058] 45 Inner cylinder

[0059] 47 Elastomer

[0060] 65 Peak portion

[0061] 67 Groove portion (resistance portion)

[0062] 91 Object to be mounted

[0063] 93 Fastening and connecting members. Detailed implementation manners

[0064] Hereinafter, embodiments 1 and 2 that embody the present invention will be described with reference to the accompanying drawings.

[0065] (Embodiment 1)

[0066] The compressor of Embodiment 1 is an example of a specific form of the compressor of the present invention. Specifically, it is a scroll-type electric compressor. This compressor is mounted on a vehicle, for example, and is used in a vehicle air conditioning device.

[0067] As Figure 1 shown, the compressor of Embodiment 1 includes a metal housing 1, a compression part 3, an electric motor 5, a drive shaft 7, and an inverter 9. The housing 1 is made of aluminum alloy, for example.

[0068] The housing 1 has a discharge housing 11, a motor housing 13, and an inverter housing 15. The discharge housing 11 and the motor housing 13 have a substantially cylindrical outer shape. The inverter housing 15 has a substantially rectangular box-shaped outer shape.

[0069] In the following description, the side of the discharge housing 11 located on the left side in Figure 1 is defined as the front side of the compressor. In addition, Figure 2 the front-rear direction shown corresponds to Figure 1 . It should be noted that Figure 1 the front-rear direction shown is an example, and the front-rear direction of the compressor is appropriately changed corresponding to the vehicle on which it is mounted.

[0070] The discharge housing 11, the motor housing 13, and the inverter housing 15 are arranged in this order from the front to the rear and are integrally assembled. A gasket 17 is provided between the discharge housing 11 and the motor housing 13. The gasket 17 is made of rubber or synthetic resin, for example.

[0071] The discharge housing 11 has a peripheral wall extending in a cylindrical shape in the front-rear direction and a bottom wall connected to the front end of the peripheral wall, and has a bottomed cylindrical shape with an opening on the rear side. The motor housing 13 has a peripheral wall extending in a cylindrical shape in the front-rear direction and a bottom wall connected to the rear end of the peripheral wall, and has a bottomed cylindrical shape with an opening on the front side. The discharge housing 11 and the motor housing 13 are butted against each other with the openings facing each other, and are fastened and connected by a plurality of bolts (not shown). The inverter housing 15 is fastened and connected to the bottom wall of the motor housing 13 by a plurality of bolts (not shown).

[0072] A discharge chamber 19 and a discharge port 21 that communicates the discharge chamber 19 with the outside are provided in the discharge housing 11. And, a discharge pipe 23 is connected to the discharge port 21. It should be noted that in Figure 1 and Figure 2Part of the discharge pipe 23 is locally shown. The discharge pipe 23 is connected to a condenser (not shown).

[0073] Inside the motor housing 13, a shaft support member (not shown) and a stationary scroll (not shown) in front of the shaft support member are accommodated in a state of being in contact with each other. In addition, a cylindrical drive shaft 7 extending in the front-rear direction is accommodated in the motor housing 13. The drive shaft 7 is supported by the bottom wall of the motor housing 13 and the shaft support member so as to be rotatable about the drive axis.

[0074] An inlet is provided in the motor housing 13 to communicate the inside of the motor housing 13 with the outside. The inlet is connected to an evaporator through a suction pipe. It should be noted that the illustration of the inlet, the suction pipe, and the evaporator is omitted.

[0075] The compression part 3 is accommodated on the front side in the motor housing 13. Although the illustration of the compression part 3 is omitted, it has a stationary scroll and a rotating scroll arranged opposite to the stationary scroll. The compression part 3 rotates the rotating scroll under the action of the rotation of the drive shaft 7, so that the volume of the compression chamber formed between the stationary scroll and the rotating scroll changes. Thus, the compression part 3 compresses the refrigerant sucked into the motor housing 13 from the inlet and discharges the compressed refrigerant to the discharge chamber 19. The high-temperature and high-pressure refrigerant discharged to the discharge chamber 19 flows out to the outside through the discharge port 21 and the discharge pipe 23. The refrigerant is an example of the "fluid" in the present invention.

[0076] The electric motor 5 is accommodated on the rear side in the motor housing 13. Although the illustration of the electric motor 5 is omitted, the electric motor 5 has a cylindrical stator and a rotor arranged inside the stator. The stator is fixed to the inner peripheral surface of the motor housing 13 and is connected to the inverter 9. The drive shaft 7 is fixed to the rotor. The rotor rotates under the action of the power supply from the inverter 9 to the stator, so that the drive shaft 7 rotates.

[0077] The inverter 9 is accommodated in the inverter housing 15. Although the illustration of the inverter 9 is omitted, the inverter 9 has an inverter circuit and a control circuit. The inverter circuit drives the electric motor 5. The control circuit controls the inverter circuit. The inverter circuit and the control circuit are respectively composed of a substrate, electronic components mounted on the substrate, and switching elements.

[0078] As Figure 1 and Figure 2 shown, three mounting feet 25 are provided on the discharge housing 11 and the motor housing 13. It should be noted that two of the three mounting feet 25 are shown in Figure 2 One of the three mounting feet 25 is provided on the discharge housing 11, another is provided at the rear of the motor housing 13, and the remaining one is provided on the motor housing 13 at a position where the compressor can be supported at three points.

[0079] The three mounting feet 25 have the same structure. Therefore, the structure of the mounting foot 25 provided on the discharge housing 11 is described, and the description of the structures of the remaining two mounting feet 25 is omitted.

[0080] The mounting foot 25 is made of metal and has a base portion 27 having a substantially rectangular shape and a cylindrical portion 29 having a substantially cylindrical shape.

[0081] The base portion 27 is integrally formed on the outer peripheral surface 11a so as to protrude from the outer peripheral surface 11a of the discharge housing 11. It should be noted that the base portion 27 of the remaining two mounting feet 25 is integrally provided on the outer peripheral surface 13a so as to protrude from the outer peripheral surface 13a of the motor housing 13.

[0082] The cylindrical portion 29 is connected to the base portion 27. Specifically, the cylindrical portion 29 is integrally formed at the protruding front end of the base portion 27 protruding from the outer peripheral surface 11a of the discharge housing 11.

[0083] As Figure 3 shown, a mounting hole 31 having a substantially circular cross section with a central axis O is formed in the cylindrical portion 29. Three convex portions 33 are formed on the inner peripheral surface 31a of the mounting hole 31. The three convex portions 33 are arranged at equal intervals in the circumferential direction of the mounting hole 31. Each convex portion 33 protrudes in an arc shape from the inner peripheral surface 31a toward the central axis O in the radial inner side when observed in the axial direction of the mounting hole 31. Each convex portion 33 extends continuously in the axial direction of the mounting hole 31 in parallel with the central axis O.

[0084] As Figure 1 and Figure 4 shown, a vibration damper 41 is assembled in the mounting hole 31 of each mounting foot 25. The vibration damper 41 is an example of the "vibration-proof member" in the present invention. The vibration damper 41 sets the resonance frequency to a specified value by setting the elastomer 47 described later to a specified shape. Therefore, when the compressor is mounted on a vehicle, the vibration damper 41 exhibits the effect of reducing vibration transmission in a frequency region above the set resonance frequency.

[0085] In a state where the vibration damper 41 is assembled in the mounting hole 31, the front ends of the three convex portions 33 abut against the outer peripheral surface of the vibration damper 41, specifically, the outer peripheral surface 43a of the outer cylinder 43 described later. Thereby, the central axis O of the mounting hole 31 coincides with the central axis C of the vibration damper 41, and the vibration damper 41 is held coaxially in the mounting hole 31.

[0086] As Figure 5 and Figure 6 shown, the vibration damper 41 has a cylindrical outer cylinder 43, a cylindrical inner cylinder 45 disposed inside the outer cylinder 43, a rubber elastomer 47, and a pair of restricting plates 49. The outer cylinder 43, the inner cylinder 45, and the restricting plates 49 are made of, for example, metal or synthetic resin.

[0087] The outer cylinder 43 and the inner cylinder 45 have a common central axis C and are arranged coaxially. The inner cylinder 45 is longer than the outer cylinder 43 in the axial direction and protrudes from the outer cylinder 43 on both sides in the axial direction.

[0088] The elastic body 47 is disposed between the outer cylinder 43 and the inner cylinder 45 and connects the two. The elastic body 47 has a thin-walled cylindrical portion 51, a thick-walled cylindrical portion 53, and four connecting portions 55. The thin-walled cylindrical portion 51, the thick-walled cylindrical portion 53, and the four connecting portions 55 are integrally formed by vulcanization molding.

[0089] The thin-walled cylindrical portion 51 is formed into a thin film shape and adhered to the outer peripheral surface of the inner cylinder 45. The thick-walled cylindrical portion 53 is formed into a film shape thicker than the thin-walled cylindrical portion 51 and adhered to the inner peripheral surface of the outer cylinder 43. The thin-walled cylindrical portion 51 and the thick-walled cylindrical portion 53 have the same axial length as the outer cylinder 43.

[0090] The four connecting portions 55 are connected to the thin-walled cylindrical portion 51 and the thick-walled cylindrical portion 53 at the axial center positions of the thin-walled cylindrical portion 51 and the thick-walled cylindrical portion 53. The four connecting portions 55 are arranged at equal intervals in the circumferential direction of the thin-walled cylindrical portion 51. That is, each connecting portion 55 is arranged at 90-degree intervals in the circumferential direction. Each connecting portion 55 has a rectangular parallelepiped shape. The radial length of each connecting portion 55 is longer than the axial length of each connecting portion 55.

[0091] A pair of restricting plates 49 are respectively adhered to the axial end faces of the inner cylinder 45. Each restricting plate 49 has a circular plate shape with an outer diameter slightly larger than that of the outer cylinder 43. Each restricting plate 49 has a through hole 49a with the same size as the inner diameter of the inner cylinder 45. The center of the through hole 49a is located on the central axis C of the inner cylinder 45.

[0092] It should be noted that when the shock absorber 41 is assembled into the mounting hole 31, for example, after inserting the integrated body of the inner cylinder 45, the outer cylinder 43, and the elastic body 47 without the adhered restricting plate 49 into the mounting hole 31, the restricting plate 49 is adhered to one end face of the inner cylinder 45 protruding from the mounting hole 31 in the axial direction, and the restricting plate 49 is adhered to the other end face of the inner cylinder 45 protruding from the mounting hole 31 in the axial direction.

[0093] As Figure 1 shown, the compressor is mounted on the mounting object 91 by fastening and connecting the mounting feet 25 to the mounting object 91 through the fastening and connecting member 93 inserted through the inner cylinder 45 of the shock absorber 41 assembled on each mounting foot 25. In this mounted state, the elastic body 47 in the shock absorber 41 absorbs the vibration in a specified frequency range generated in the compression section 3 during the operation of the compressor. Thereby, the vibration generated in the compression section 3 can be suppressed from being transmitted to the mounting object 91.

[0094] Further, in this compressor, the outer cylinder 43 of the shock absorber 41 is held on the inner peripheral surface 31a of the mounting hole 31 of the mounting leg 25, and a convex portion 33 that abuts against the outer peripheral surface 43a of the outer cylinder 43 is provided on the inner peripheral surface 31a of the mounting hole 31. Accordingly, the inner peripheral surface 31a of the mounting hole 31 and the outer peripheral surface 43a of the outer cylinder 43 are in contact via the convex portion 33, while being non-contact in the vicinity of the convex portion 33. As a result, the contact area where the inner peripheral surface 31a of the mounting hole 31 and the outer peripheral surface 43a of the outer cylinder 43 are in contact is reduced, and thus heat transfer from the mounting leg 25 to the outer cylinder 43 and further from the mounting leg 25 to the elastic body 47 disposed inside the outer cylinder 43 can be suppressed.

[0095] Accordingly, in this compressor, thermal degradation of the elastic body 47 of the shock absorber 41 assembled to the mounting leg 25 can be suppressed.

[0096] In particular, in this compressor, a discharge port 21 is provided in the discharge housing 11, the discharge pipe 23 is connected to the discharge port 21, and one mounting leg 25 is provided in the discharge housing 11. The shock absorber 41 assembled to the mounting leg 25 disposed near the discharge pipe 23 or the like is likely to become high temperature due to the heat of the high-temperature refrigerant compressed by the compression section 3. In this regard, in this compressor, even if the shock absorber 41 is exposed to high temperature, heat transfer to the elastic body 47 is difficult, and thus thermal degradation of the elastic body 47 can be suppressed.

[0097] In addition, the connecting portion 55 of the elastic body 47 in the shock absorber 41 is connected to the thin-walled cylindrical portion 51 on the inner peripheral side and the thick-walled cylindrical portion 53 on the outer peripheral side in the radial direction, and has a shape in which the connecting length in the radial direction is long. Accordingly, if the elastic body 47 in the shock absorber 41 softens due to heat, it is likely to break at the connecting portion 55. In this regard, in this compressor, even if the shock absorber 41 is exposed to high temperature, softening of the elastic body 47 due to heat can be suppressed, and thus breakage of the connecting portion 55 can be suppressed.

[0098] Further, in this compressor, a convex portion 33 is provided on the inner peripheral surface 31a of the mounting hole 31. Accordingly, by forming the convex portion 33 on the inner peripheral surface 31a of the mounting hole 31 when forming the mounting hole 31 in the mounting leg 25, formation of the convex portion 33 becomes easy. In addition, assuming that the convex portion 33 is formed on the outer peripheral surface 43a of the outer cylinder 43, alignment is required such that the convex portion 33 is in a desired position in the circumferential direction when inserting the shock absorber 41 into the mounting hole 31. In this regard, in this compressor, since the convex portion 33 is formed on the inner peripheral surface 31a of the mounting hole 31, such alignment is not required.

[0099] In addition, in this compressor, the convex portion 33 extends over the entire axial direction of the mounting hole 31. Accordingly, tilting of the shock absorber 41 held in the mounting hole 31 with respect to the axial direction can be suppressed.

[0100] Moreover, three convex portions 33 are provided at equal intervals along the circumferential direction of the mounting hole 31. Accordingly, it is possible to suppress eccentricity of the shock absorber 41 held in the mounting hole 31 within the mounting hole 31.

[0101] (Embodiment 2)

[0102] In the compressor according to Embodiment 2, the shape of the convex portion 33 of the mounting leg 25 and the shape of the outer cylinder 43 of the shock absorber 41 are changed in the compressor according to Embodiment 1.

[0103] As Figure 7 shown, three convex portions 63 are formed on the inner circumferential surface 31a of the mounting hole 31 of the mounting leg 25 instead of the three convex portions 33. The three convex portions 63 are arranged at equal intervals along the circumferential direction of the mounting hole 31.

[0104] When viewed axially of the mounting hole 31, each convex portion 63 projects in a partial arc shape from the inner circumferential surface 31a toward the central axis O in the radial inner side, and two peak portions 65 are provided at the tip of the projection thereof. Each convex portion 63 extends continuously in the entire axial direction of the mounting hole 31 parallel to the central axis O. Further, the two peak portions 65 in each convex portion 63 extend continuously in the entire axial direction of the mounting hole 31 parallel to the central axis O and are arranged at intervals along the circumferential direction of the mounting hole 31.

[0105] Accordingly, as Figure 8 shown, in a state where the shock absorber 41 is assembled in the mounting hole 31, the two peak portions 65 in each convex portion 63 abut against the outer circumferential surface 43a of the outer cylinder 43 of the shock absorber 41. Accordingly, the central axis O of the mounting hole 31 coincides with the central axis C of the shock absorber 41, and the shock absorber 41 is held coaxially within the mounting hole 31.

[0106] Further, as Figure 9 shown, a plurality of groove portions 67 are formed on the outer circumferential surface 43a of the outer cylinder 43 of the shock absorber 41. The groove portion 67 is an example of the "resistance portion" in the present invention. In the present embodiment, more than ten groove portions 67 are provided at equal intervals along the circumferential direction of the outer circumferential surface 43a. Each groove portion 67 extends continuously in the entire axial direction of the outer circumferential surface 43a parallel to the central axis C.

[0107] In this compressor, two peak portions 65 are provided at the tip of the projection of each convex portion 63. Accordingly, the peak value of the surface pressure at the contact portion where the inner circumferential surface 31a of the mounting hole 31 contacts the outer circumferential surface 43a of the outer cylinder 43, that is, between the inner circumferential surface 31a and the outer circumferential surface 43a increases, and thus it is advantageous for suppressing relative rotation of the shock absorber 41 with respect to the mounting hole 31.

[0108] In addition, in this compressor, a plurality of groove portions 67 extending in the axial direction of the mounting hole 31 and arranged at intervals in the circumferential direction of the mounting hole 31 are provided on the outer peripheral surface 43a of the outer cylinder 43. Therefore, the sliding resistance of the convex portion 63 and the outer cylinder 43 sliding in the circumferential direction of the mounting hole 31 increases, and thus relative rotation of the shock absorber 41 with respect to the mounting hole 31 can be suppressed.

[0109] As described above, the present invention has been described in conjunction with Embodiments 1 and 2, but the present invention is not limited to the above-described Embodiments 1 and 2, and can of course be appropriately modified and applied without departing from the gist thereof.

[0110] In Embodiments 1 and 2, the shock absorber 41 having the elastic body 47 formed in a predetermined shape so as to have a predetermined resonance frequency is employed as the vibration isolation member, but the present invention is not limited thereto, and various vibration isolation members having an elastic body that is easily thermally deteriorated can be used.

[0111] In Embodiments 1 and 2, the convex portions 33 and 63 are provided on the inner peripheral surface 31a of the mounting hole 31, but the present invention is not limited thereto, and the convex portions 33 and 63 may be provided on the outer peripheral surface 43a of the outer cylinder 43, or the convex portions 33 and 63 may be provided on both the inner peripheral surface 31a of the mounting hole 31 and the outer peripheral surface 43a of the outer cylinder 43.

[0112] In Embodiments 1 and 2, the number of the convex portions 33 and 63 is set to three, but the present invention is not limited thereto, and the number of the convex portions 33 and 63 may be one or two or more.

[0113] In Embodiment 2, the number of the peak portions 65 provided on the convex portion 63 is set to two, but the present invention is not limited thereto, and the number of the peak portions 65 may be three or more.

[0114] In Embodiment 2, the plurality of groove portions 67 are formed on the outer peripheral surface 43a of the outer cylinder 43 as the resistance portion, but the present invention is not limited thereto. For example, the outer peripheral surface 43a of the outer cylinder 43 may be roughened. In addition, when the convex portions 33 and 63 are provided on the outer peripheral surface 43a of the outer cylinder 43, the inner peripheral surface 31a of the mounting hole 31 may be roughened.

[0115] The following technical idea can be extracted from the disclosure of the specification and the drawings and the like.

[0116] (Supplementary Note 1)

[0117] A compressor, characterized in that

[0118] the compressor includes:

[0119] a compression part that compresses a fluid;

[0120] A housing that houses the compression section;

[0121] Mounting feet that protrude from the outer surface of the housing and have mounting holes; and

[0122] A vibration damping member that is assembled in the mounting hole,

[0123] The vibration damping member has: an outer cylinder that is held on the inner peripheral surface of the mounting hole; an inner cylinder that is disposed inside the outer cylinder and through which a fastening connection member for fastening and connecting the mounting foot to a mounting object is inserted; and an elastic body that is disposed between the outer cylinder and the inner cylinder and connects the two.

[0124] A convex portion that abuts against the other of the inner peripheral surface and the outer peripheral surface is provided on one of the inner peripheral surface of the mounting hole and the outer peripheral surface of the outer cylinder.

[0125] (Supplementary Note 2)

[0126] The compressor according to Supplementary Note 1, wherein

[0127] The convex portion is provided on the inner peripheral surface.

[0128] (Supplementary Note 3)

[0129] The compressor according to Supplementary Note 1 or 2, wherein

[0130] The convex portion extends in the axial direction of the mounting hole.

[0131] (Supplementary Note 4)

[0132] The compressor according to any one of Supplementary Notes 1 to 3, wherein

[0133] A plurality of the convex portions are provided at intervals in the circumferential direction of the mounting hole.

[0134] (Supplementary Note 5)

[0135] The compressor according to any one of Supplementary Notes 1 to 4, wherein

[0136] A plurality of peak portions that extend in the axial direction of the mounting hole and are arranged at intervals in the circumferential direction of the mounting hole are provided at the protruding front end of the convex portion.

[0137] (Supplementary Note 6)

[0138] The compressor according to any one of Supplementary Notes 1 to 5, wherein

[0139] A resistance portion that increases the sliding resistance in the circumferential direction of the mounting hole with respect to the convex portion is provided on the other of the inner peripheral surface and the outer peripheral surface.

[0140] (Supplementary Note 7)

[0141] The compressor according to Supplementary Note 6, wherein,

[0142] the resistance portion is composed of a plurality of groove portions extending in the axial direction of the mounting hole and arranged at intervals in the circumferential direction.

[0143] (Supplementary Note 8)

[0144] The compressor according to any one of Supplementary Notes 1 to 7, wherein,

[0145] the housing has a discharge port for discharging the fluid compressed by the compression portion to the outside,

[0146] a plurality of the mounting feet are provided on the outer surface of the housing,

[0147] the vibration-proof member is provided on at least the mounting foot closest to the discharge port among the plurality of mounting feet.

[0148] Industrial Applicability

[0149] The present invention can be used in an air-conditioning device for a vehicle or the like.

Claims

1. A compressor, characterized in that, the compressor comprises: a compression part that compresses fluid; a housing that houses the compression part; mounting feet that protrude from an outer surface of the housing and have mounting holes; and vibration-proof members that are assembled in the mounting holes, the vibration-proof members having: an outer cylinder held on an inner circumferential surface of the mounting hole; an inner cylinder disposed inside the outer cylinder and through which a fastening and connecting member for fastening and connecting the mounting feet to a mounting object is inserted; and an elastic body disposed between the outer cylinder and the inner cylinder and connecting the two, a convex portion that abuts against the other of the inner circumferential surface and the outer circumferential surface is provided on one of the inner circumferential surface of the mounting hole and the outer circumferential surface of the outer cylinder.

2. The compressor according to claim 1, wherein, the convex portion is provided on the inner circumferential surface.

3. The compressor according to claim 1 or 2, wherein, the convex portion extends in an axial direction of the mounting hole.

4. The compressor according to any one of claims 1 to 3, wherein, a plurality of the convex portions are provided at intervals in a circumferential direction of the mounting hole.

5. The compressor according to any one of claims 1 to 4, wherein, a plurality of peak portions that extend in the axial direction of the mounting hole and are arranged at intervals in the circumferential direction of the mounting hole are provided at a protruding front end of the convex portion.

6. The compressor according to any one of claims 1 to 5, wherein, a resistance portion that increases a sliding resistance of sliding with the convex portion in the circumferential direction of the mounting hole is provided on the other of the inner circumferential surface and the outer circumferential surface.

7. The compressor according to claim 6, wherein, the resistance portion is constituted by a plurality of groove portions that extend in the axial direction of the mounting hole and are arranged at intervals in the circumferential direction.

8. The compressor according to any one of claims 1 to 7, wherein, the housing has a discharge port for discharging the fluid compressed by the compression part to the outside, a plurality of the mounting feet are provided on the outer surface of the housing, the vibration-proof member is provided on at least the mounting foot closest to the discharge port among the plurality of mounting feet.

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