Compressor

Abstract

To provide a compressor capable of restraining reduction in vibration control performance of a vibration control elastic member even under a severe vibration condition.SOLUTION: The compressor 1 includes the sleeve 20 disposed in the through hole 51 of the mounting foot 50 of the housing 10 and receiving the fastener 70 for fastening the mounting foot 50 to the mounting object 60, the pair of vibration-absorbing elastic members 40 disposed at the opposite ends of the through hole 51 in the axial direction, and the pair of annular plates 30 integral with or separate from the sleeve 20, disposed outside the vibration-absorbing elastic members 40 in the axial direction, and extending in the radial direction perpendicular to the axial direction. One of the inner peripheral surface of the mounting leg 50 and the outer peripheral surface of the sleeve 20 is provided with radial projections 21, 22 projecting in the radial direction toward the other, and when the housing 10 vibrates, the radial projections 21, 22 abut on the 50a of the radially opposed surface with deformation of the vibration-absorbing elastic member 40, thereby defining the deformation limit of the vibration-absorbing elastic member 40 in the radial direction.SELECTED DRAWING: Figure 1

Description

[Technical Field]

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

[0002] Patent Document 1 discloses a conventional compressor. This compressor includes a housing, a pair of sleeves, a pair of vibration-isolating elastic members, and a pair of flanges. This compressor is attached to an object to be attached to a vehicle.

[0003] The housing has a storage portion and mounting legs. The storage portion houses a compression portion that compresses the fluid. A through hole is formed in the mounting legs. The pair of sleeves are cylindrical and are disposed inside the through hole. One of the pair of sleeves is disposed at one axial end of the through hole. The other of the pair of sleeves is disposed at the other axial end of the through hole.

[0004] The pair of vibration-damping elastic members are respectively disposed at both axial ends of the through-hole of the mounting foot. Each vibration-damping elastic member has a tubular portion and a flange portion. The tubular portion is disposed between the inner peripheral surface of the mounting foot and the outer peripheral surface of the sleeve. The flange portion extends radially from the axial end of the tubular portion and is disposed between the mounting foot and an annular plate facing the mounting foot in the axial direction.

[0005] In this compressor, the housing vibrates when the compression section operates, but the vibration-isolating elastic member prevents the vibration from being transmitted to the vehicle. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Publication No. 2022-147643 Summary of the Invention [Problem to be solved by the invention]

[0007] However, in the above-mentioned conventional compressors, under severe vibration conditions in which an excessive load acts on the vibration-damping elastic member, the vibration-damping elastic member undergoes excessive elastic deformation, causing the vibration-damping elastic member to wear out or cracks to form on the surface of the vibration-damping elastic member, resulting in a decrease in vibration-damping performance.

[0008] The present invention has been made in consideration of the above-mentioned conventional situation, and an object of the present invention is to provide a compressor that can prevent a decrease in the vibration-damping performance of a vibration-damping elastic member even under severe vibration conditions. [Means for solving the problem]

[0009] The first compressor of the present invention includes a housing having an accommodating portion for accommodating a compressing portion that compresses a fluid and a mounting foot having a through hole formed therein; a cylindrical sleeve disposed inside the through hole and through which a fastening member for fastening the mounting foot to a mounting object is inserted; a pair of vibration-damping elastic members respectively disposed at both axial ends of the through hole, the vibration-damping elastic members having a cylindrical portion disposed between an inner peripheral surface of the mounting foot and an outer peripheral surface of the sleeve; a pair of annular plates that are integral with or separate from the sleeve, that are disposed outward of the vibration-damping elastic members in the axial direction, and that extend in a radial direction perpendicular to the axial direction; In a compressor in which the vibration-isolating elastic member is compressed in the axial direction between the mounting feet and the annular plate, and the vibration-isolating elastic member is compressed in the radial direction between the mounting feet and the sleeve, a radial protrusion that protrudes in the radial direction toward the other of the inner circumferential surface of the mounting foot and the outer circumferential surface of the sleeve is provided on one of the inner circumferential surface of the mounting foot and the outer circumferential surface of the sleeve, When the housing vibrates, the vibration-damping elastic member deforms, and the radial convex portion comes into contact with the radial opposing surface that faces the radial convex portion on the other side in the radial direction, thereby determining the deformation limit of the vibration-damping elastic member in the radial direction.

[0010] In the first compressor of the present invention, when the mounting feet and the mounting object are fastened by the fastening members, the vibration-damping elastic member is compressed in the axial direction of the through hole as well as in the radial direction of the through hole, so that when the housing vibrates during operation of the compression unit, the axial vibration component and the radial vibration component are damped by the vibration-damping elastic member.

[0011] When an excessive radial load acts on the vibration-damping elastic member under severe vibration conditions, the vibration-damping elastic member undergoes radial deformation, causing the radial convex portion and the radially opposing surface to abut against each other, thereby defining the radial deformation limit of the vibration-damping elastic member. Therefore, even under severe conditions in which the housing vibrates significantly in the radial direction, the vibration-damping elastic member is prevented from undergoing excessive elastic deformation in the radial direction. As a result, it is possible to prevent the vibration-damping elastic member from becoming worn or cracks from occurring on its surface.

[0012] Therefore, the first compressor of the present invention can prevent the vibration-damping performance of the vibration-damping elastic member from decreasing even under severe vibration conditions.

[0013] In the first compressor of the present invention, the sleeve may include a first sleeve disposed at one axial end of the through hole and a second sleeve disposed at the other axial end of the through hole. The pair of annular plates may include a first flange integrally extending radially from one axial end of the first sleeve and a second flange integrally extending radially from the other axial end of the second sleeve. The radial convex portion may include a sleeve-side first radial convex portion provided on the outer circumferential surface of the first sleeve and a sleeve-side second radial convex portion provided on the outer circumferential surface of the second sleeve. The pair of vibration-damping elastic members may include a first vibration-damping elastic member disposed between the first flange and the sleeve-side first radial convex portion in the axial direction, and a second vibration-damping elastic member disposed between the second flange and the sleeve-side second radial convex portion in the axial direction. The other axial end of the sleeve-side first radial convex portion preferably has a first tapered outer circumferential surface tapering toward its axial tip. Preferably, one axial end of the sleeve-side second radial convex portion is formed with a second tapered outer circumferential surface that tapers toward the axial tip.

[0014] In this case, when attaching the first vibration-damping elastic member to the first sleeve, the inner peripheral surface of the first vibration-damping elastic member is brought into contact with and slid against the first tapered outer peripheral surface, which facilitates the diameter expansion of the first vibration-damping elastic member, making it easier for the first vibration-damping elastic member to overcome the first radial convex portion on the sleeve side. As a result, the first vibration-damping elastic member is easily attached to the first sleeve. Similarly, the second vibration-damping elastic member is easily attached to the second sleeve.

[0015] In the first compressor of the present invention, the radial convex portion may be a mounting foot-side radial convex portion provided on the inner circumferential surface of the mounting foot. Preferably, one axial end of the mounting foot-side radial convex portion is formed with a tapered inner circumferential surface whose inner diameter decreases from one end to the other end in the axial direction.

[0016] In this case, when inserting the sleeve into the through hole of the mounting foot from one axial end of the through hole, the sleeve can be easily inserted into the through hole by abutting the insertion side tip of the sleeve against the tapered inner surface and sliding it.

[0017] In the first compressor of the present invention, it is preferable that one of the radial protrusion and the radially opposed surface is provided with an elastic film that buffers contact between the radial protrusion and the radially opposed surface.

[0018] In this case, the elastic film can suppress the contact noise that occurs when the radial protrusion contacts the radially opposing surface.

[0019] In the first compressor of the present invention, the protruding height of the radial convex portion is preferably at least 2 / 3 of the radial thickness of the cylindrical portion when the mounting feet are fastened to the mounting object and the housing is in a non-vibrating state.

[0020] In this case, excessive elastic deformation of the vibration-isolating elastic member in the radial direction can be suppressed with high reliability.

[0021] The second compressor of the present invention includes a housing having an accommodating portion for accommodating a compressing portion that compresses a fluid and a mounting foot having a through hole formed therein; a cylindrical sleeve disposed inside the through hole and through which a fastening member for fastening the mounting foot to a mounting object is inserted; a pair of vibration-damping elastic members respectively disposed at both axial ends of the through hole, the vibration-damping elastic members having a cylindrical portion disposed between an inner peripheral surface of the mounting foot and an outer peripheral surface of the sleeve; a pair of annular plates that are integral with or separate from the sleeve, that are disposed outside the vibration-damping elastic members in the axial direction, and that extend in a radial direction perpendicular to the axial direction; In a compressor in which the vibration-isolating elastic member is compressed in the axial direction between the mounting feet and the annular plate, and the vibration-isolating elastic member is compressed in the radial direction between the mounting feet and the sleeve, an axial convex portion that protrudes in the axial direction toward the other of the mounting foot end surface and the annular plate end surface is provided on one of the mounting foot end surface of the mounting foot in the axial direction and the annular plate end surface of the annular plate that faces the mounting foot end surface in the axial direction; When the housing vibrates, the vibration-damping elastic member deforms, and the axial convex portion comes into contact with the axial opposing surface that faces the axial convex portion on the other side in the axial direction, thereby determining the deformation limit of the vibration-damping elastic member in the axial direction.

[0022] In the second compressor of the present invention, when the mounting feet and the mounting object are fastened by the fastening members, the vibration-damping elastic member is compressed in the axial direction of the through hole as well as in the radial direction of the through hole, so that when the housing vibrates during operation of the compression unit, the axial vibration component and the radial vibration component are damped by the vibration-damping elastic member.

[0023] When an excessive axial load acts on the vibration-damping elastic member under severe vibration conditions, the vibration-damping elastic member deforms in the axial direction, causing the axial convex portion and the axially opposing surface to abut against each other, thereby defining the axial deformation limit of the vibration-damping elastic member. Therefore, even under severe conditions in which the housing vibrates significantly in the axial direction, the vibration-damping elastic member is prevented from undergoing excessive elastic deformation in the axial direction. As a result, the vibration-damping elastic member can be prevented from sagging or from developing cracks on its surface.

[0024] Therefore, the second compressor of the present invention can prevent the vibration-damping elastic member from deteriorating in vibration-damping performance even under severe vibration conditions.

[0025] In the second compressor of the present invention, it is preferable that one of the axial protrusion and the axial opposing surface is provided with an elastic film that buffers contact between the axial protrusion and the axial opposing surface.

[0026] In this case, the elastic film can suppress the contact noise that occurs when the axial convex portion contacts the axially opposing surface.

[0027] A third compressor of the present invention includes a housing having an accommodating portion for accommodating a compressing portion that compresses a fluid and a mounting foot having a through hole formed therein; a cylindrical sleeve disposed inside the through hole and through which a fastening member for fastening the mounting foot to a mounting object is inserted; a pair of vibration-damping elastic members respectively disposed at both axial ends of the through hole, the vibration-damping elastic members having a cylindrical portion disposed between an inner peripheral surface of the mounting foot and an outer peripheral surface of the sleeve; a pair of annular plates that are integral with or separate from the sleeve, that are disposed outward of the vibration-damping elastic member in the axial direction, and that extend in a radial direction perpendicular to the axial direction; In a compressor in which the vibration-isolating elastic member is compressed in the axial direction between the mounting feet and the annular plate, and the vibration-isolating elastic member is compressed in the radial direction between the mounting feet and the sleeve, An axially extending portion extending in the axial direction is provided on an end surface of the mounting foot in the axial direction, When the housing vibrates, the vibration-damping elastic member deforms, and the axially extending portion comes into contact with the outer peripheral opposing surface of the annular plate that faces the axially extending portion in the radial direction, thereby determining the deformation limit of the vibration-damping elastic member in the radial direction.

[0028] In the third compressor of the present invention, when the mounting feet and the mounting object are fastened by the fastening members, the vibration-damping elastic member is compressed in the axial direction of the through hole as well as in the radial direction of the through hole, so that when the housing vibrates during operation of the compression unit, the axial vibration component and the radial vibration component are damped by the vibration-damping elastic member.

[0029] When an excessive radial load acts on the vibration-damping elastic member under severe vibration conditions, the vibration-damping elastic member undergoes radial deformation, causing the axially extending portion and the outer peripheral opposing surface to abut against each other, thereby defining the radial deformation limit of the vibration-damping elastic member. Therefore, even under severe conditions in which the housing vibrates significantly in the radial direction, the vibration-damping elastic member is prevented from undergoing excessive elastic deformation in the radial direction. As a result, the vibration-damping elastic member can be prevented from sagging or from developing cracks on its surface.

[0030] Therefore, the third compressor of the present invention can prevent the vibration-damping elastic member from decreasing in vibration-damping performance even under severe vibration conditions.

[0031] In the third compressor of the present invention, it is preferable that one of the axially extending portion and the outer peripheral opposing surface is provided with an elastic film that buffers contact between the axially extending portion and the outer peripheral opposing surface.

[0032] In this case, the elastic film can suppress the contact noise that occurs when the axially extending portion contacts the outer peripheral opposing surface. [Effects of the Invention]

[0033] The first to third compressors of the present invention can prevent the vibration-damping elastic member from losing its vibration-damping performance even under severe vibration conditions. [Brief explanation of the drawings]

[0034] [Figure 1] FIG. 1 is a schematic partial cross-sectional view showing a compressor of a first embodiment mounted on a vehicle. [Figure 2] FIG. 2 is a cross-sectional view of the first sleeve and the first vibration-isolating elastic member for explaining how the first vibration-isolating elastic member is attached to the first sleeve in the compressor of the first embodiment. [Figure 3]Figure 3 is a partial cross-sectional view of the first sleeve, the first vibration-damping elastic member, the mounting foot, etc., which explains the relationship between the protruding height of the sleeve-side first radial convex portion provided on the outer surface of the first sleeve and the thickness of the first cylindrical portion of the first vibration-damping elastic member in the radial direction of the through hole when the mounting foot is fastened to the mounting object and the housing is in a vibration-free state, in the compressor of Example 1. [Figure 4] FIG. 4 is a partially enlarged cross-sectional view of the compressor of the first embodiment, showing a state in which a large load acts on the first vibration-isolating elastic member in the radial direction of the through hole. [Figure 5] FIG. 5 is a schematic partial cross-sectional view showing the compressor of the second embodiment mounted on a vehicle. [Figure 6] Figure 6 is a partial cross-sectional view of the first sleeve, the first vibration-damping elastic member, the mounting foot, etc., illustrating the relationship between the protruding height of the mounting foot-side radial convex portion provided on the inner surface of the mounting foot and the thickness of the first cylindrical portion of the first vibration-damping elastic member in the radial direction of the through hole when the mounting foot is fastened to the mounting object and the housing is in a vibration-free state, in the compressor of Example 2. [Figure 7] Figure 7 is a partial cross-sectional view of the mounting foot, the first sleeve, and the first vibration-damping elastic member of the compressor of the second embodiment, illustrating how the integrated first vibration-damping elastic member and the first sleeve are inserted into the through hole of the mounting foot. [Figure 8] FIG. 8 is a partially enlarged cross-sectional view of the compressor according to the second embodiment, showing a state in which a large load acts on the first vibration-isolating elastic member in the radial direction of the through hole. [Figure 9] FIG. 9 is a schematic partial cross-sectional view showing the compressor of the third embodiment mounted on a vehicle. [Figure 10] Figure 10 is a partial cross-sectional view of the first sleeve, the first vibration-damping elastic member, the mounting foot, etc., which explains the relationship between the protruding height of the flange-side first axial convex portion provided on the first flange end face of the first flange and the thickness of the first circular plate portion of the first vibration-damping elastic member in the axial direction of the through hole when the mounting foot is fastened to the mounting object and the housing is in a vibration-free state, in the compressor of Example 3. [Figure 11]FIG. 11 is a partially enlarged cross-sectional view of the compressor according to the third embodiment, showing a state in which a large load acts on the first vibration-isolating elastic member in the axial direction of the through hole. [Figure 12] FIG. 12 is a schematic partial cross-sectional view showing the compressor of the fourth embodiment mounted on a vehicle. [Figure 13] Figure 13 is a partial cross-sectional view of the first sleeve, the first vibration-damping elastic member, the mounting foot, etc., which explains the relationship between the protruding height of the first axial convex portion on the mounting foot side provided on the first mounting foot end face of the mounting foot and the thickness of the first circular plate portion of the first vibration-damping elastic member in the axial direction of the through hole when the mounting foot is fastened to the mounting object and the housing is in a vibration-free state, in the compressor of Example 4. [Figure 14] FIG. 14 is a partially enlarged cross-sectional view of the compressor according to the fourth embodiment, showing a state in which a large load acts on the first vibration-isolating elastic member in the axial direction of the through hole. [Figure 15] FIG. 15 is a schematic partial cross-sectional view showing the compressor of the fifth embodiment mounted on a vehicle. [Figure 16] FIG. 16 is a partially enlarged cross-sectional view of the compressor according to the fifth embodiment, showing a state in which a large load acts on the first vibration-isolating elastic member in the radial direction of the through hole. [Figure 17] FIG. 17 is a schematic partial cross-sectional view showing the compressor of the sixth embodiment mounted on a vehicle. [Figure 18] FIG. 18 is a partially enlarged cross-sectional view showing the compressor of the seventh embodiment mounted on a vehicle. [Figure 19] FIG. 19 is a partially enlarged cross-sectional view showing the compressor of the eighth embodiment mounted on a vehicle. [Figure 20] FIG. 20 is a partially enlarged cross-sectional view showing the compressor of the ninth embodiment mounted on a vehicle. DETAILED DESCRIPTION OF THE INVENTION

[0035] Hereinafter, Examples 1 to 9 embodying the present invention will be described with reference to the drawings.

[0036] Example 1 The compressor 1 of the first embodiment is an example of a specific aspect of the compressor of the present invention, and is specifically a scroll-type electric compressor. The compressor 1 is mounted on a vehicle and used in a vehicle air conditioner, for example.

[0037] 1, the compressor 1 includes a housing 10, a pair of sleeves 20, a pair of flanges 30, and a pair of vibration-isolating elastic members 40. The flanges 30 are an example of the "annular plate" of the present invention.

[0038] The housing 10 is made of metal, for example, aluminum, and has a cylindrical receiving portion 11 and a plurality of mounting legs 50.

[0039] The accommodation unit 11 accommodates the compression unit 12. The compression unit 12 compresses a refrigerant. The refrigerant is an example of the "fluid" in the present invention. Note that the fluid to be compressed by the compression unit 12 is not limited to the refrigerant, and may be air or the like.

[0040] Although not shown, an electric motor, a rotating shaft, and an inverter are housed within the accommodation section 11. The rotating shaft is supported by the housing 10 in a state in which it can rotate within the accommodation section 11. The electric motor is connected to the compression section 12 via the rotating shaft and drives the compression section 12. The inverter is electrically connected to the electric motor and controls the drive of the electric motor.

[0041] Although not shown, the housing 10 is formed with an intake port through which the refrigerant is drawn and a discharge port through which the refrigerant is discharged. When the electric motor is driven by the inverter to rotate the rotary shaft, the compression section 12 is activated. When the compression section 12 is activated, the refrigerant drawn in through the intake port is compressed in the compression section 12, and the compressed refrigerant is discharged to the outside of the housing 10 through the discharge port.

[0042] A plurality of mounting feet 50 are provided on the outer peripheral surface of the housing 10. In this embodiment, three mounting feet 50 are formed integrally with the housing 10. That is, the mounting feet 50 are made of the same metal as the housing 10. As shown in FIG. 1 , one of the three mounting feet 50 is provided on the upper part of the outer peripheral surface of the housing 10. Although not shown, the remaining two of the three mounting feet 50 are provided on the lower part of the outer peripheral surface of the housing 10. These mounting feet 50 are provided for attaching the housing 10 to an attachment target 60, which is a part of a vehicle.

[0043] Each mounting leg 50 is cylindrical. The central axis O of each mounting leg 50 extends horizontally and perpendicular to the central axis of the storage unit 11. In this embodiment, the central axis of the storage unit 11 and the rotation axis of the rotation shaft coincide with each other.

[0044] Because each mounting foot 50 has the same configuration, the following description will focus on one of the three mounting feet 50, which is provided on the top of the housing 10, and will omit a description of the other mounting feet 50. In this embodiment, the solid arrows shown in FIG. 1 define one axial direction of the through hole 51 of the mounting foot 50 and the other axial direction of the through hole 51. In FIG. 2 and subsequent figures, the one axial direction and the other axial direction are defined in accordance with FIG. 1. In the following, the arrangement and positional relationship of each component in a fastened state in which the mounting foot 50 is fastened to the mounting object 60 as shown in FIG. 1 will be described.

[0045] The mounting foot 50 has a through hole 51 formed therein that penetrates in the direction of the central axis O of the mounting foot 50. The axial direction of the through hole 51 extends parallel to the central axis O of the mounting foot 50. The through hole 51 is formed inside the mounting foot 50 by an inner peripheral surface 50a of the mounting foot 50. The inner peripheral surface 50a extends over the entire axial direction of the through hole 51 with a constant inner diameter.

[0046] The mounting foot 50 has a first mounting foot end surface 50b on one side in the axial direction and a second mounting foot end surface 50c on the other side in the axial direction. The first mounting foot end surface 50b and the second mounting foot end surface 50c are flat surfaces perpendicular to the central axis O. The second mounting foot end surface 50c faces and is adjacent to the mounting end surface 60a of the mounting object 60 in the axial direction. An internal thread 61 extending in the axial direction is formed at the mounting end surface 60a so as to correspond to the central axis O of the mounting foot 50 arranged at the mounting position.

[0047] The pair of sleeves 20 are made of metal, for example, aluminum. The pair of sleeves 20 are arranged inside the through hole 51. The pair of sleeves 20 include a first sleeve 21 and a second sleeve 22. The first sleeve 21 is arranged at one end of the through hole 51 in the axial direction. The second sleeve 22 is arranged at the other end of the through hole 51 in the axial direction.

[0048] As shown in FIG. 2 , the first sleeve 21 has a generally cylindrical shape with a central axis C. The inner diameter of the first sleeve 21 is slightly larger than the outer diameter of a shaft portion 71 of a fastening member 70 (described later). A sleeve-side first radial protrusion 23 is formed on a first outer peripheral surface 21a of the first sleeve 21. The sleeve-side first radial protrusion 23 is an example of the “radial protrusion” of the present invention. The sleeve-side first radial protrusion 23 is integrally formed on the other axial end of the first outer peripheral surface 21a of the first sleeve 21. The sleeve-side first radial protrusion 23 protrudes radially outward in an annular shape from the first outer peripheral surface 21a of the first sleeve 21. In the axial direction, the length of the sleeve-side first radial protrusion 23 is at least one-third of the length of the first sleeve 21. The first outer peripheral surface 21a of the first sleeve 21 extends in the axial direction of the through hole 51 from one end of the first sleeve 21 to the sleeve-side first radial protrusion 23 with a constant outer diameter.

[0049] The sleeve-side first radial protrusion 23 protrudes a predetermined protrusion height from the first outer peripheral surface 21a of the first sleeve 21. The sleeve-side first radial protrusion 23 has a first outer peripheral abutment surface 23a and a first tapered outer peripheral surface 23b. The first outer peripheral abutment surface 23a extends in the axial direction with a constant outer diameter. As shown in FIG. 3 , in the radial direction perpendicular to the axial direction, the protrusion height h1 of the sleeve-side first radial protrusion 23 at the first outer peripheral abutment surface 23a is at least two-thirds of the thickness d1 of the first cylindrical portion 411 (described later) when the mounting foot 50 is fastened to the mounting target 60 and the housing 10 is in a vibration-free state.

[0050] The outer diameter of the first outer periphery abutting surface 23a of the sleeve-side first radial protrusion 23 is smaller by a predetermined amount than the inner diameter of the through hole 51 of the mounting foot 50. As shown in Fig. 1, when the mounting foot 50 is fastened to the mounting object 60, a predetermined gap S is provided in the radial direction between the first outer periphery abutting surface 23a of the sleeve-side first radial protrusion 23 and a mounting foot-side first radially opposed surface 50d that radially faces the first outer periphery abutting surface 23a on the inner periphery 50a of the mounting foot 50. The mounting foot-side first radially opposed surface 50d is an example of the "radially opposed surface" in the present invention.

[0051] 2, the first tapered outer peripheral surface 23b is formed at the other axial end of the sleeve-side first radial convex portion 23. The first tapered outer peripheral surface 23b tapers toward the other axial tip. The outer diameter of the other axial tip of the first sleeve 21, i.e., the minimum outer diameter of the other axial tip of the first tapered outer peripheral surface 23b, is set to R1. This minimum outer diameter R1 at the tip of the first tapered outer peripheral surface 23b is set to be smaller by a predetermined amount than the inner diameter R2 of a first vibration-damping elastic member 41, which will be described later.

[0052] The second sleeve 22 has a generally cylindrical shape with a central axis C and a similar configuration to the first sleeve 21. The inner diameter of the second sleeve 22 is slightly larger than the outer diameter of a shaft portion 71 of a fastening member 70 (described later). A sleeve-side second radial protrusion 24 is formed on a second outer peripheral surface 22a of the second sleeve 22. The sleeve-side second radial protrusion 24 is an example of a "radial protrusion" in the present invention. The sleeve-side second radial protrusion 24 is integrally formed on one axial end of the second outer peripheral surface 22a of the second sleeve 22. The sleeve-side second radial protrusion 24 protrudes radially outward in an annular shape from the second outer peripheral surface 22a of the second sleeve 22. In the axial direction, the length of the sleeve-side second radial protrusion 24 is at least one-third of the length of the second sleeve 22. The second outer peripheral surface 22a of the second sleeve 22 extends in the axial direction of the through hole 51 from the other end of the second sleeve 22 to the sleeve-side second radial protrusion 24 with a constant outer diameter.

[0053] The sleeve-side second radial protrusion 24 protrudes a predetermined protrusion height from the second outer peripheral surface 22a of the second sleeve 22. The sleeve-side second radial protrusion 24 has a second outer peripheral abutment surface 24a and a second tapered outer peripheral surface 24b. The second outer peripheral abutment surface 24a extends in the axial direction with a constant outer diameter. In the radial direction perpendicular to the axial direction, the protrusion height h1 of the second outer peripheral abutment surface 24a of the sleeve-side second radial protrusion 24 is at least two-thirds of the thickness d1 of the second cylindrical portion 421 (described later) when the mounting foot 50 is fastened to the mounting object 60 and the housing 10 is in a vibration-free state.

[0054] The outer diameter of the second outer periphery abutting surface 24a of the sleeve-side second radial protrusion 24 is smaller by a predetermined amount than the inner diameter of the through hole 51 of the mounting foot 50. As shown in Fig. 1, when the mounting foot 50 is fastened to the mounting object 60, a predetermined gap S is provided in the radial direction between the second outer periphery abutting surface 24a of the sleeve-side second radial protrusion 24 and a mounting foot-side second radially opposed surface 50e that radially faces the second outer periphery abutting surface 24a on the inner periphery 50a of the mounting foot 50. The mounting foot-side second radially opposed surface 50e is an example of the "radially opposed surface" in the present invention.

[0055] The second tapered outer peripheral surface 24b is formed at one axial end of the sleeve-side second radial convex portion 24. The second tapered outer peripheral surface 24b tapers toward one axial tip. The outer diameter of one axial tip of the second sleeve 22, i.e., the minimum outer diameter of one axial tip of the second tapered outer peripheral surface 24b, is set to R1. This minimum outer diameter R1 at the tip of the second tapered outer peripheral surface 24b is set to be smaller by a predetermined amount than the inner diameter R2 of a second vibration-damping elastic member 42, which will be described later.

[0056] The pair of flanges 30 includes a first flange 31 and a second flange 32. The first sleeve 21 has the first flange 31 integrally therewith. The second sleeve 22 has the second flange 32 integrally therewith.

[0057] The first flange 31 is integrally formed with one axial end of the first sleeve 21. That is, in this embodiment, the flange 30 as an annular plate is integrally formed with the sleeve 20. The first flange 31 is made of the same metal as the first sleeve 21. The first flange 31 extends in a disk shape, projecting radially outward from one axial end of the first sleeve 21. The first flange 31 is located on one side of the axial direction relative to a first mounting foot end surface 50b of the mounting foot 50. The first flange 31 has a first flange end surface 31a that faces the first mounting foot end surface 50b in the axial direction. The first flange 31 is also located on one side of the axial direction relative to a first circular plate portion 412, which will be described later.

[0058] The second flange 32 is integrally formed with the other axial end of the second sleeve 22. The second flange 32 is made of the same metal as the second sleeve 22. The second flange 32 projects radially outward from the other axial end of the second sleeve 22, extending in a disk shape. The second flange 32 is located on the other side of the axial direction from the second mounting foot end surface 50c of the mounting foot 50. The second flange 32 has a second flange end surface 32a that faces the second mounting foot end surface 50c in the axial direction. The second flange 32 is also located on the other side of the axial direction from a second disk portion 422, which will be described later.

[0059] 1, a head 72 of a fastening member 70 (described later) abuts against the first flange 31 via a washer 74. The second flange 32 abuts against a mounting end surface 60a of the mounting object 60. The other axial end of the first sleeve 21 abuts against one axial end of the second sleeve 22.

[0060] The pair of vibration-damping elastic members 40 are arranged at both axial ends of the through-hole 51. The pair of vibration-damping elastic members 40 are made of cylindrical rubber elastic bodies. The pair of vibration-damping elastic members 40 are a first vibration-damping elastic member 41 and a second vibration-damping elastic member 42.

[0061] The first vibration-damping elastic member 41 is disposed at one axial end of the through hole 51. The first vibration-damping elastic member 41 is disposed between the inner circumferential surface 50a of the mounting foot 50 and the first outer circumferential surface 21a of the first sleeve 21. The first vibration-damping elastic member 41 is disposed in the axial direction between the first flange 31 and the sleeve-side first radial convex portion 23. The inner diameter R2 of the first vibration-damping elastic member 41 is slightly smaller than the outer diameter of the first sleeve 21 at the first outer circumferential surface 21a other than the sleeve-side first radial convex portion 23.

[0062] The first vibration-isolating elastic member 41 has a first cylindrical portion 411 and a first disk portion 412. The first cylindrical portion 411 is an example of the "cylindrical portion" in the present invention.

[0063] The first cylindrical portion 411 is disposed radially between the inner peripheral surface 50a of the mounting foot 50 and the first outer peripheral surface 21a of the first sleeve 21. The first cylindrical portion 411 has a cylindrical shape that is thick in the radial direction and extends in the axial direction. When the mounting foot 50 is fastened to the mounting object 60 and the housing 10 is in a vibration-free state, the thickness of the first cylindrical portion 411 in the radial direction is d1.

[0064] The first circular plate portion 412 is formed integrally with one axial end portion of the first cylindrical portion 411. The first circular plate portion 412 protrudes radially from one axial end portion of the first cylindrical portion 411 and extends in a circular plate shape. When no external force is acting on the first vibration-damping elastic member 41, the thickness of the first circular plate portion 412 in the axial direction is greater by a predetermined amount than the thickness of the first cylindrical portion 411 in the radial direction. The outer diameter of the first cylindrical portion 411 is slightly larger than the inner diameter of the through hole 51 of the mounting foot 50.

[0065] As shown in Figure 1, when the mounting foot 50 is fastened to the mounting object 60, the first tubular portion 411 of the first vibration-damping elastic member 41 is compressed radially between the inner surface 50a of the mounting foot 50 and the first outer surface 21a of the first sleeve 21, and the first circular plate portion 412 of the first vibration-damping elastic member 41 is compressed axially between the first mounting foot end surface 50b of the mounting foot 50 and the first flange end surface 31a of the first flange 31.

[0066] The second vibration-damping elastic member 42 is disposed at the other axial end of the through hole 51. The second vibration-damping elastic member 42 is disposed between the inner circumferential surface 50a of the mounting foot 50 and the second outer circumferential surface 22a of the second sleeve 22. The second vibration-damping elastic member 42 is disposed in the axial direction between the second flange 32 and the sleeve-side second radial convex portion 24. The inner diameter R2 of the second vibration-damping elastic member 42 is slightly smaller than the outer diameter of the second sleeve 22 at the second outer circumferential surface 22a other than the sleeve-side second radial convex portion 24.

[0067] The second vibration-isolating elastic member 42 has a second cylindrical portion 421 and a second disk portion 422. The second cylindrical portion 421 is an example of the "cylindrical portion" according to the present invention.

[0068] The second cylindrical portion 421 is disposed radially between the inner peripheral surface 50a of the mounting foot 50 and the second outer peripheral surface 22a of the second sleeve 22. The second cylindrical portion 421 has a cylindrical shape that is thick in the radial direction and extends in the axial direction. When the mounting foot 50 is fastened to the mounting object 60 and the housing 10 is in a vibration-free state, the thickness of the second cylindrical portion 421 in the radial direction is d1.

[0069] The second circular plate portion 422 is formed integrally with the other axial end portion of the second cylindrical portion 421. The second circular plate portion 422 protrudes radially from the other axial end portion of the second cylindrical portion 421 and extends in a circular plate shape. When no external force is acting on the second vibration-damping elastic member 42, the thickness of the second circular plate portion 422 in the axial direction is greater by a predetermined amount than the thickness of the second cylindrical portion 421 in the radial direction. The outer diameter of the second cylindrical portion 421 is slightly larger than the inner diameter of the through hole 51 of the mounting foot 50.

[0070] As shown in Figure 1, when the mounting foot 50 is fastened to the mounting object 60, the second tubular portion 421 of the second vibration-damping elastic member 42 is compressed radially between the inner surface 50a of the mounting foot 50 and the second outer surface 22a of the second sleeve 22, and the second circular plate portion 422 of the second vibration-damping elastic member 42 is compressed axially between the second mounting foot end surface 50c of the mounting foot 50 and the second flange end surface 32a of the second flange 32.

[0071] A fastening member 70 is inserted into the pair of sleeves 20. The fastening member 70 has a shaft portion 71 and a head portion 72. The shaft portion 71 has a male thread 73 at the other end in the axial direction. The shaft portion 71 is inserted into the first sleeve 21 from the first flange 31, and its tip extends from the second flange 32 in the other direction in the axial direction, and the male thread 73 is threaded into the female thread 61 of the attachment object 60.

[0072] The mounting feet 50 are attached to the mounting object 60 as follows, for example.

[0073] As shown in Figure 2, the first vibration-damping elastic member 41 is attached to the first sleeve 21. At this time, the inner peripheral surface 41a of the first vibration-damping elastic member 41 is brought into contact with and slid over the first tapered outer peripheral surface 23b of the sleeve-side first radial convex portion 23. This makes it easy to expand the diameter of the first vibration-damping elastic member 41 on the first tapered outer peripheral surface 23b. This makes it easy for the first vibration-damping elastic member 41 to climb over the sleeve-side first radial convex portion 23, facilitating attachment of the first vibration-damping elastic member 41 to the first sleeve 21. The second vibration-damping elastic member 42 is attached to the second sleeve 22 in a similar manner.

[0074] Then, the integrated unit of the first sleeve 21 and the first vibration-damping elastic member 41 is inserted into the through-hole 51 of the mounting foot 50 from one side in the axial direction. At this time, the first cylindrical portion 411 of the first vibration-damping elastic member 41 is press-fitted into the through-hole 51. The first circular plate portion 412 of the first vibration-damping elastic member 41 is brought into contact with the first mounting foot end surface 50b of the mounting foot 50. Similarly, the integrated unit of the second sleeve 22 and the second vibration-damping elastic member 42 is inserted into the through-hole 51 of the mounting foot 50 from the other side in the axial direction, and the second cylindrical portion 421 of the second vibration-damping elastic member 42 is press-fitted into the through-hole 51 and the second circular plate portion 422 of the second vibration-damping elastic member 42 is brought into contact with the second mounting foot end surface 50c of the mounting foot 50.

[0075] Alternatively, the first vibration-damping elastic member 41 may be inserted into the through-hole 51 of the mounting foot 50 from one axial end, and then the first sleeve 21 may be inserted into the inner circumferential surface 41a of the first vibration-damping elastic member 41. Similarly, the second vibration-damping elastic member 42 may be inserted into the through-hole 51 of the mounting foot 50 from the other axial end, and then the second sleeve 22 may be inserted into the inner circumferential surface 42a of the second vibration-damping elastic member 42.

[0076] Then, with the mounting foot 50 placed in a predetermined position relative to the mounting object 60, the shaft 71 of the fastening member 70 is inserted into the pair of sleeves 20, and the male thread 73 is screwed into the female thread 61 of the mounting object 60. In this way, the mounting foot 50 is fastened to the mounting object 60 by the fastening member 70, and the mounting of the mounting foot 50 to the mounting object 60 is completed.

[0077] In a fastened state in which the mounting foot 50 is fastened to the mounting object 60, the first cylindrical portion 411 of the first vibration-damping elastic member 41 is compressed in the radial direction, and the first circular plate portion 412 of the first vibration-damping elastic member 41 is compressed in the axial direction. Similarly, in this fastened state, the second cylindrical portion 421 of the second vibration-damping elastic member 42 is compressed in the radial direction, and the second circular plate portion 422 of the second vibration-damping elastic member 42 is compressed in the axial direction.

[0078] Therefore, in this compressor 1, when the compression section 12 operates and the housing 10 vibrates, the vibration component in the axial direction of the through hole 51 and the vibration component in the radial direction are damped by the first vibration-damping elastic member 41 and the second vibration-damping elastic member 42. Specifically, when the housing 10 vibrates in the axial direction, the vibration component in the axial direction is damped by the first circular plate portion 412 of the first vibration-damping elastic member 41 and the second circular plate portion 422 of the second vibration-damping elastic member 42. Furthermore, when the housing 10 vibrates in the radial direction, the vibration component in the radial direction is damped by the first cylindrical portion 411 of the first vibration-damping elastic member 41 and the second cylindrical portion 421 of the second vibration-damping elastic member 42.

[0079] When the housing 10 vibrates significantly in the radial direction of the through-hole 51 under severe vibration conditions, an excessive radial load acts on the first vibration-damping elastic member 41 and the second vibration-damping elastic member 42. This causes the first tubular portion 411 of the first vibration-damping elastic member 41 and the second tubular portion 421 of the second vibration-damping elastic member 42 to undergo significant radial deformation.

[0080] 4 , in the compressor 1, when the mounting foot 50 is displaced radially relative to the sleeve 20 in association with radial elastic deformation of the first cylindrical portion 411 and the second cylindrical portion 421, the first outer circumferential abutment surface 23a of the sleeve-side first radial protrusion 23 abuts against the mounting foot-side first radial opposing surface 50d, and the second outer circumferential abutment surface 24a of the sleeve-side second radial protrusion 24 abuts against the mounting foot-side second radial opposing surface 50e. This restricts further radial deformation of the first cylindrical portion 411 of the first vibration-damping elastic member 41 and the second cylindrical portion 421 of the second vibration-damping elastic member 42. As a result, the radial deformation limit of the first cylindrical portion 411 is defined, and the radial deformation limit of the second cylindrical portion 421 is also defined.

[0081] Thus, in this compressor 1, even under severe conditions in which the housing 10 vibrates significantly in the radial direction, the first cylindrical portion 411 of the first vibration-damping elastic member 41 and the second cylindrical portion 421 of the second vibration-damping elastic member 42 are prevented from undergoing excessive elastic deformation in the radial direction. As a result, it is possible to prevent the vibration-damping elastic member 40 from becoming worn or cracks from occurring on the surface of the vibration-damping elastic member 40.

[0082] In particular, in this compressor 1, the protruding height h1 of the sleeve-side first radial convex portion 23 is set to be at least two-thirds of the radial thickness d1 of the first cylindrical portion 411 when the mounting foot 50 is fastened to the mounting object 60 and the housing 10 is in a vibration-free state. Although it depends on the volume, rubber hardness, etc. of the first vibration-damping elastic member 41, by setting the radial deformation amount of the first cylindrical portion 411 to less than about one-third of the thickness d1 of the first cylindrical portion 411, it is possible to suitably suppress rubber deterioration in the first cylindrical portion 411 and damage occurring at the boundary between the first cylindrical portion 411 and the first circular plate portion 412. The same applies to the second vibration-damping elastic member 42.

[0083] Therefore, in this compressor 1, the vibration-damping performance of the vibration-damping elastic member 40 can be prevented from decreasing even under severe vibration conditions.

[0084] Example 2 A compressor 2 of a second embodiment shown in Fig. 5 is a modified example of the compressor 1 of the first embodiment. In this compressor 2, a mounting foot-side radial protrusion 53 is provided on an inner circumferential surface 52a of a mounting foot 52. The mounting foot-side radial protrusion 53 is an example of the "radial protrusion" of the present invention.

[0085] The mounting foot side radial protrusion 53 protrudes radially inward in an annular shape from the inner circumferential surface 52a of the mounting foot 52. In the axial direction of the through hole 51, the mounting foot side radial protrusion 53 is provided in the center of the inner circumferential surface 52a. In the axial direction of the through hole 51, the length of the mounting foot side radial protrusion 53 is at least one-third of the entire length of the inner circumferential surface 52a. The inner circumferential surface 52a of the mounting foot 52 extends in the axial direction of the through hole 51 from one end of the mounting foot 52 to the mounting foot side radial protrusion 53 with a constant inner diameter. Furthermore, the inner circumferential surface 52a of the mounting foot 52 extends in the axial direction of the through hole 51 from the other end of the mounting foot 52 to the mounting foot side radial protrusion 53 with a constant inner diameter.

[0086] The mounting foot side radial convex portion 53 has an inner peripheral abutment surface 53a, a first tapered inner peripheral surface 53b, and a second tapered inner peripheral surface 53c. The first tapered inner peripheral surface 53b and the second tapered inner peripheral surface 53c are examples of the "tapered inner peripheral surface" in the present invention.

[0087] In the axial direction of the through hole 51, the length of the inner circumferential abutment surface 53a is at least one-third of the entire length of the inner circumferential surface 52a. The inner circumferential abutment surface 53a extends in the axial direction with a constant inner diameter. The first tapered inner circumferential surface 53b is formed at one axial end of the mounting foot side radial protrusion 53. The inner diameter of the first tapered inner circumferential surface 53b gradually decreases from one axial end of the mounting foot side radial protrusion 53 toward the other axial end. The second tapered inner circumferential surface 53c is formed at the other axial end of the mounting foot side radial protrusion 53. The inner diameter of the second tapered inner circumferential surface 53c gradually decreases from the other axial end of the mounting foot side radial protrusion 53 toward one axial end.

[0088] The pair of sleeves 20 includes a first sleeve 25 and a second sleeve 26. The first sleeve 25 has a cylindrical shape that extends in the axial direction and has a constant outer diameter. Similarly, the second sleeve 26 has a cylindrical shape that extends in the axial direction and has a constant outer diameter.

[0089] Similar to the compressor 1 of the first embodiment, the pair of flanges 30 are a first flange 31 and a second flange 32. The first flange 31 is integrally formed with one axial end of the first sleeve 25. The first flange 31 protrudes radially outward from the one axial end of the first sleeve 25, extending in a disk shape. Similarly, the second flange 32 is integrally formed with the other axial end of the second sleeve 26. The second flange 32 protrudes radially outward from the other axial end of the second sleeve 26, extending in a disk shape.

[0090] The inner diameter of the mounting foot-side radial protrusion 53 is larger than the outer diameter of the first sleeve 25 and the outer diameter of the second sleeve 26 by a predetermined amount. The mounting foot-side radial protrusion 53 protrudes a predetermined protrusion height from the inner circumferential surface 52a of the mounting foot 52. As shown in FIG. 6 , in the radial direction perpendicular to the axial direction, the protrusion height h2 of the inner circumferential abutment surface 53a of the mounting foot-side radial protrusion 53 is equal to or greater than two-thirds of the thickness d1 of the first cylindrical portion 411 when the mounting foot 52 is fastened to the mounting target 60 and the housing 10 is in a vibration-free state. A predetermined radial gap S is provided between the inner circumferential abutment surface 53a of the mounting foot-side radial protrusion 53 and a sleeve-side first radially opposed surface 25b that radially faces the inner circumferential abutment surface 53a on the first outer circumferential surface 25a of the first sleeve 25. The sleeve-side first radially opposed surface 25b is an example of a “radially opposed surface” in the present invention. 5, a predetermined gap S is provided in the radial direction between the inner circumferential abutment surface 53a of the mounting foot side radial protrusion 53 and a sleeve-side second radially opposed surface 26b that radially faces the inner circumferential abutment surface 53a on the second outer circumferential surface 26a of the second sleeve 26. The sleeve-side second radially opposed surface 26b is an example of the "radially opposed surface" in the present invention.

[0091] 7 , in this compressor 2, the integrated unit, in which the first vibration-damping elastic member 41 is attached to the first sleeve 25 by press-fitting, is inserted into the through-hole 51 of the mounting foot 52 from one side in the axial direction. At this time, if the central axis C of the first sleeve 25 is radially offset from the central axis O of the mounting foot 50, the first sleeve 25 can be easily inserted into the through-hole 51 by abutting the insertion-side tip end of the first sleeve 25 against the first tapered inner circumferential surface 53 b and sliding it. Similarly, when the integrated unit of the second sleeve 22 and the second vibration-damping elastic member 42 is inserted into the through-hole 51 of the mounting foot 52 from the other side in the axial direction, the second sleeve 26 can be easily inserted into the through-hole 51 by abutting the insertion-side tip end of the second sleeve 26 against the second tapered inner circumferential surface 53 c and sliding it.

[0092] 5, when the mounting foot 52 is fastened to the mounting object 60, the first cylindrical portion 411 of the first vibration-damping elastic member 41 is compressed in the radial direction between the inner peripheral surface 52a of the mounting foot 52 and the first outer peripheral surface 25a of the first sleeve 25, and the first circular plate portion 412 of the first vibration-damping elastic member 41 is compressed in the axial direction between the first mounting foot end surface 52b of the mounting foot 52 and the first flange end surface 31a of the first flange 31. The same is true for the second vibration-damping elastic member 42, where the second cylindrical portion 421 is compressed in the radial direction between the inner peripheral surface 52a of the mounting foot 52 and the second outer peripheral surface 26a of the second sleeve 26, and the second circular plate portion 422 is compressed in the axial direction between the second mounting foot end surface 52c and the second flange end surface 32a.

[0093] 8 , in this compressor 2, when the housing 10 vibrates significantly in the radial direction of the through-hole 51 under severe vibration conditions, the first cylindrical portion 411 and the second cylindrical portion 421 elastically deform in the radial direction, causing the inner circumferential abutment surface 53a of the mounting foot-side radial protrusion 53 to abut against the sleeve-side first radially opposed surface 25b of the first sleeve 25 and the sleeve-side second radially opposed surface 26b of the second sleeve 26. This restricts further radial deformation of the first cylindrical portion 411 of the first vibration-damping elastic member 41 and the second cylindrical portion 421 of the second vibration-damping elastic member 42. As a result, the radial deformation limits of the first cylindrical portion 411 and the second cylindrical portion 421 are defined.

[0094] Therefore, in this compressor 2, the vibration-damping performance of the vibration-damping elastic member 40 can be prevented from decreasing even under severe vibration conditions.

[0095] The other configurations and effects are the same as those of the first embodiment.

[0096] Example 3 A compressor 3 of a third embodiment shown in Fig. 9 is a modified example of the compressor 1 of the first embodiment. In this compressor 3, the pair of flanges 30 is a first flange 33 and a second flange 34. The first flange 33 and the second flange 34 are an example of the "annular plate" of the present invention.

[0097] The first sleeve 21 has a first flange 33 formed integrally therewith, and the second sleeve 22 has a second flange 34 formed integrally therewith.

[0098] The first flange 33 is formed integrally with one axial end of the first sleeve 21. The first flange 33 projects radially outward from one axial end of the first sleeve 21 and extends in a generally circular plate shape. The first flange 33 has a flange-side first axial protrusion 35. The flange-side first axial protrusion 35 is an example of the "axial protrusion" of the present invention.

[0099] The flange-side first axial protrusion 35 is provided on the outer peripheral end of the first flange 33. The first flange 33 has a first flange end face 33a that faces the first mounting foot end face 50b of the mounting foot 50 in the axial direction. The flange-side first axial protrusion 35 protrudes annularly from the first flange end face 33a toward the other side in the axial direction. In the axial direction, the flange-side first axial protrusion 35 faces the first mounting foot end face 50b. The first flange end face 33a is an example of an "annular plate end face" in the present invention. The first mounting foot end face 50b is an example of a "mounting foot end face" in the present invention, and also an example of an "axially opposing surface" in the present invention.

[0100] The flange-side first axial protrusion 35 protrudes in the axial direction from the first flange end face 33a by a predetermined protrusion length. As shown in Fig. 10, the axial protrusion height h3 of the flange-side first axial protrusion 35 is equal to or greater than two-thirds of the thickness d2 of the first circular plate portion 412 of the first vibration-damping elastic member 41 when the mounting foot 50 is fastened to the mounting object 60 and the housing 10 is in a vibration-free state. A predetermined gap S is provided in the axial direction between the flange-side first axial protrusion 35 and the first mounting foot end face 50b that faces the flange-side first axial protrusion 35 in the axial direction.

[0101] The second flange 34 is formed integrally with the other axial end of the second sleeve 22. The second flange 34 projects radially outward from the other axial end of the second sleeve 22 and extends in a generally circular plate shape. The second flange 34 has a flange-side second axial protrusion 36. The flange-side second axial protrusion 36 is an example of the "axial protrusion" of the present invention.

[0102] The flange-side second axial protrusion 36 is provided on the outer peripheral end of the second flange 34. The second flange 34 has a second flange end face 34a that faces the second mounting foot end face 50c of the mounting foot 50 in the axial direction. The flange-side second axial protrusion 36 protrudes annularly from the second flange end face 34a toward one side in the axial direction. In the axial direction, the flange-side second axial protrusion 36 faces the second mounting foot end face 50c. The second flange end face 34a is an example of an "annular plate end face" in the present invention. The second mounting foot end face 50c is an example of a "mounting foot end face" in the present invention, and also an example of an "axially opposing surface" in the present invention.

[0103] The flange-side second axial protrusion 36 protrudes in the axial direction from the second flange end face 34a by a predetermined protrusion length. In the axial direction, the protrusion height h3 of the flange-side second axial protrusion 36 is at least two-thirds of the thickness d2 of the second circular plate portion 422 of the second vibration-damping elastic member 42 when the mounting foot 50 is fastened to the mounting object 60 and the housing 10 is in a vibration-free state. As shown in Fig. 9, a predetermined gap S is provided in the axial direction between the flange-side second axial protrusion 36 and the second mounting foot end face 50c that faces the flange-side second axial protrusion 36 in the axial direction.

[0104] The first sleeve 21 has a sleeve-side first radial convex portion 23, similar to the compressor 1 of the first embodiment. Moreover, the second sleeve 22 has a sleeve-side second radial convex portion 24, similar to the compressor 1 of the first embodiment.

[0105] 11 , in this compressor 3, when the housing 10 vibrates significantly in the axial direction of the through-hole 51 under severe vibration conditions, the first circular plate portion 412 elastically deforms in the axial direction, causing the flange-side first axial protrusion 35 of the first flange 33 to abut against the first mounting foot end surface 50b of the mounting foot 50, and the second circular plate portion 422 elastically deforms in the axial direction, causing the flange-side second axial protrusion 36 of the second flange 34 to abut against the second mounting foot end surface 50c of the mounting foot 50. This restricts further axial deformation of the first circular plate portion 412 of the first vibration-damping elastic member 41 and the second circular plate portion 422 of the second vibration-damping elastic member 42. As a result, the deformation limits of the first circular plate portion 412 and the second circular plate portion 422 in the axial direction are defined.

[0106] Furthermore, in this compressor 3, similar to the compressor 1 of the first embodiment, when the housing 10 vibrates significantly in the radial direction of the through-hole 51 under severe vibration conditions, the first cylindrical portion 411 and the second cylindrical portion 421 undergo radial elastic deformation, causing the first outer circumferential abutment surface 23a of the sleeve-side first radial convex portion 23 to abut against the mounting foot-side first radial opposing surface 50d, and the second outer circumferential abutment surface 24a of the sleeve-side second radial convex portion 24 to abut against the mounting foot-side second radial opposing surface 50e. This restricts further radial deformation of the first cylindrical portion 411 of the first vibration-damping elastic member 41 and the second cylindrical portion 421 of the second vibration-damping elastic member 42. As a result, the radial deformation limits of the first cylindrical portion 411 and the second cylindrical portion 421 are defined.

[0107] Therefore, in this compressor 3, the vibration-damping performance of the vibration-damping elastic member 40 can be prevented from decreasing even under severe vibration conditions.

[0108] The other configurations and effects are the same as those of the first embodiment.

[0109] Example 4 A compressor 4 according to a fourth embodiment shown in FIG. 12 is a modified example of the compressor 2 according to the second embodiment, and is also a modified example of the compressor 3 according to the third embodiment.

[0110] In this compressor 4, similar to the compressor 2 of the second embodiment, the pair of sleeves 20 are a first sleeve 25 and a second sleeve 26. The first sleeve 25 is cylindrical and extends in the axial direction with a constant outer diameter, and has a disk-shaped first flange 31 integrally formed at one end in the axial direction. Similarly, the second sleeve 26 is cylindrical and extends in the axial direction with a constant outer diameter, and has a disk-shaped second flange 32 integrally formed at the other end in the axial direction.

[0111] In the compressor 4, the mounting foot 54 has a mounting foot-side radial protrusion 53, a mounting foot-side first axial protrusion 55, and a mounting foot-side second axial protrusion 56. The mounting foot-side first axial protrusion 55 and the mounting foot-side second axial protrusion 56 are examples of the "axial protrusion" of the present invention.

[0112] The mounting foot side radial protrusion 53 is provided on the inner circumferential surface 54a of the mounting foot 54. The mounting foot side radial protrusion 53 in this compressor 4 has the same configuration as the mounting foot side radial protrusion 53 in the compressor 2 of the second embodiment.

[0113] The mounting foot-side first axial protrusion 55 is provided on the first mounting foot end surface 54b of the mounting foot 54. The mounting foot-side first axial protrusion 55 protrudes in an annular shape from the first mounting foot end surface 54b in one axial direction. In the axial direction, the mounting foot-side first axial protrusion 55 faces the first flange end surface 31a of the first flange 31. The first mounting foot end surface 54b is an example of a "mounting foot end surface" in the present invention. The first flange end surface 31a is an example of an "annular plate end surface" in the present invention, and also an example of an "axially opposing surface" in the present invention.

[0114] The mounting foot-side first axial protrusion 55 protrudes a predetermined protrusion length in the axial direction from the first mounting foot end surface 54b of the mounting foot 54. As shown in Fig. 13, the protrusion height h4 of the mounting foot-side first axial protrusion 55 in the axial direction is equal to or greater than two-thirds of the thickness d2 of the first circular plate portion 412 of the first vibration-damping elastic member 41 when the mounting foot 54 is fastened to the mounting object 60 and the housing 10 is in a vibration-free state. A predetermined gap S is provided in the axial direction between the mounting foot-side first axial protrusion 55 and the first flange end surface 31a that faces the mounting foot-side first axial protrusion 55 in the axial direction.

[0115] The mounting foot side second axial protrusion 56 is provided on the second mounting foot end surface 54c of the mounting foot 54. The mounting foot side second axial protrusion 56 protrudes in an annular shape from the second mounting foot end surface 54c toward the other side of the axial direction. In the axial direction, the mounting foot side second axial protrusion 56 faces the second flange end surface 32a of the second flange 32. The second mounting foot end surface 54c is an example of a "mounting foot end surface" in the present invention. The second flange end surface 32a is an example of an "annular plate end surface" in the present invention, and also an example of an "axially opposing surface" in the present invention.

[0116] The mounting foot-side second axial protrusion 56 protrudes a predetermined protrusion length in the axial direction from the second mounting foot end surface 54c of the mounting foot 54. In the axial direction, the protrusion height h4 of the mounting foot-side second axial protrusion 56 is at least two-thirds of the thickness d2 of the second circular plate portion 422 of the second vibration-damping elastic member 42 when the mounting foot 54 is fastened to the mounting object 60 and the housing 10 is in a vibration-free state. As shown in Fig. 12, a predetermined gap S is provided in the axial direction between the mounting foot-side second axial protrusion 56 and the second flange end surface 32a that faces the mounting foot-side second axial protrusion 56 in the axial direction.

[0117] 14 , in this compressor 4, when the housing 10 vibrates significantly in the axial direction of the through-hole 51 under severe vibration conditions, the first circular plate portion 412 elastically deforms in the axial direction, causing the first axial convex portion 55 of the mounting foot 54 to come into contact with the first flange end surface 31 a of the first flange 31, and the second circular plate portion 422 elastically deforms in the axial direction, causing the second axial convex portion 56 of the mounting foot 54 to come into contact with the second flange end surface 32 a of the second flange 32. This restricts further axial deformation of the first circular plate portion 412 of the first vibration-damping elastic member 41 and the second circular plate portion 422 of the second vibration-damping elastic member 42. As a result, the deformation limits of the first circular plate portion 412 and the second circular plate portion 422 in the axial direction are defined.

[0118] Furthermore, in this compressor 4, similar to the compressor 2 of the second embodiment, when the housing 10 vibrates significantly in the radial direction of the through-hole 51 under severe vibration conditions, the first cylindrical portion 411 and the second cylindrical portion 421 undergo radial elastic deformation, causing the inner circumferential abutment surface 53a of the mounting foot-side radial protrusion 53 to abut against the sleeve-side first radially opposed surface 25b of the first sleeve 25 and the sleeve-side second radially opposed surface 26b of the second sleeve 26. This restricts further radial deformation of the first cylindrical portion 411 of the first vibration-damping elastic member 41 and the second cylindrical portion 421 of the second vibration-damping elastic member 42. As a result, the radial deformation limits of the first cylindrical portion 411 and the second cylindrical portion 421 are defined.

[0119] Therefore, in this compressor 4, the vibration-damping performance of the vibration-damping elastic member 40 can be prevented from decreasing even under severe vibration conditions.

[0120] The other configurations and effects are the same as those of the second and third embodiments.

[0121] Example 5 A compressor 5 according to a fifth embodiment shown in FIG. 15 is a modified example of the compressor 1 according to the first embodiment.

[0122] In this compressor 5, the inner peripheral surface 57a of the mounting foot 57 extends over the entire axial direction of the through hole 51 with a constant inner diameter, similar to the inner peripheral surface 50a of the mounting foot 50 in the compressor 1 of the first embodiment.

[0123] Furthermore, in this compressor 5, similar to the compressor 2 of the second embodiment, the pair of sleeves 20 are a first sleeve 25 and a second sleeve 26. The first sleeve 25 is cylindrical, has a constant outer diameter, and extends entirely in the axial direction, and has a disk-shaped first flange 31 integrally formed at one end in the axial direction. Similarly, the second sleeve 26 is cylindrical, has a constant outer diameter, and extends entirely in the axial direction, and has a disk-shaped second flange 32 integrally formed at the other end in the axial direction.

[0124] In the compressor 5, the mounting foot 57 has a first axially extending portion 58 and a second axially extending portion 59. The first axially extending portion 58 and the second axially extending portion 59 are examples of the "axially extending portion" according to the present invention.

[0125] The first axially extending portion 58 is provided on a first mounting foot end surface 57b of the mounting foot 57. The first mounting foot end surface 57b is an example of the "mounting foot end surface" of the present invention. The first axially extending portion 58 extends in an annular shape from the first mounting foot end surface 57b in one axial direction.

[0126] The first axially extending portion 58 extends in the axial direction from the first mounting foot end surface 57b to a position where it radially overlaps with the first flange 31. The first axially extending portion 58 radially faces a first flange outer periphery opposing surface 31b, which is the outer periphery surface of the first flange 31. The first flange outer periphery opposing surface 31b is an example of the "outer periphery opposing surface" in the present invention. A predetermined gap S is provided in the radial direction between the first axially extending portion 58 and the first flange outer periphery opposing surface 31b.

[0127] The second axially extending portion 59 is provided on a second mounting foot end surface 57c of the mounting foot 57. The second mounting foot end surface 57c is an example of the "mounting foot end surface" of the present invention. The second axially extending portion 59 extends in an annular shape from the second mounting foot end surface 57c toward the other axial direction.

[0128] The second axially extending portion 59 extends in the axial direction from the second mounting foot end surface 57c to a position where it radially overlaps with the second flange 32. The second axially extending portion 59 radially faces the second flange outer periphery opposing surface 32b, which is the outer periphery surface of the second flange 32. The second flange outer periphery opposing surface 32b is an example of the "outer periphery opposing surface" in the present invention. A predetermined radial gap S is provided between the second axially extending portion 59 and the second flange outer periphery opposing surface 32b.

[0129] 16 , in this compressor 5, when the housing 10 vibrates significantly in the radial direction of the through hole 51 under severe vibration conditions, the first cylindrical portion 411 and the second cylindrical portion 421 undergo elastic deformation in the radial direction, causing the first axially extending portion 58 to abut against the first flange outer circumferential facing surface 31 b and the second axially extending portion 59 to abut against the second flange outer circumferential facing surface 32 b. This restricts further radial deformation of the first cylindrical portion 411 of the first vibration-damping elastic member 41 and the second cylindrical portion 421 of the second vibration-damping elastic member 42. As a result, the radial deformation limits of the first cylindrical portion 411 and the second cylindrical portion 421 are defined.

[0130] Therefore, in this compressor 5, the vibration-damping performance of the vibration-damping elastic member 40 can be prevented from decreasing even under severe vibration conditions.

[0131] The other configurations and effects are the same as those of the first embodiment.

[0132] Example 6 A compressor 6 according to a sixth embodiment shown in FIG. 17 is a modified example of the compressor 5 according to the fifth embodiment.

[0133] This compressor 6 has a first annular plate 81 and a second annular plate 82 instead of the first flange 31 and the second flange 32 in the compressor 5 of the fifth embodiment. The first annular plate 81 and the second annular plate 82 are an example of the "annular plate" in the present invention.

[0134] In the compressor 6, the pair of sleeves 20 is a first sleeve 27 and a second sleeve .

[0135] The first sleeve 27 is cylindrical and has a first outer peripheral surface 27a that extends entirely in the axial direction with a constant outer diameter. The first sleeve 27 does not have a first flange 31 integrally formed at one end in the axial direction. A first annular plate 81, which is separate from the first sleeve 27, is disposed on one side of the first sleeve 27 in the axial direction. When the mounting foot 57 is fastened to the mounting object 60, the first annular plate 81 abuts against one end face of the first sleeve 27 in the axial direction.

[0136] The second sleeve 28 is cylindrical and has a second outer peripheral surface 28a that extends entirely in the axial direction with a constant outer diameter. The second sleeve 28 does not have a second flange 32 integrally formed with it at the other end in the axial direction. A second annular plate 82, which is separate from the second sleeve 28, is disposed on the other side of the second sleeve 28 in the axial direction. When the mounting foot 57 is fastened to the mounting object 60, the second annular plate 82 abuts against the other end face of the second sleeve 28 in the axial direction.

[0137] Instead of the first sleeve 27 and the second sleeve 28, a single cylindrical sleeve having a constant outer diameter and extending entirely in the axial direction may be used.

[0138] The first annular plate 81 has a first annular plate end face 81a that faces the first mounting foot end face 57b in the axial direction. The first annular plate 81 is located to one side of the first circular plate portion 412 of the first vibration-damping elastic member 41 in the axial direction. The first annular plate 81 also has a first through-hole 81c having an inner diameter equal to the inner diameter of the first sleeve 27. The shaft portion 71 of the fastening member 70 is inserted into the first through-hole 81c.

[0139] A predetermined gap S is provided in the radial direction between the first axially extending portion 58 and the first annular plate outer circumferential opposing surface 81b that is radially opposed to the first axially extending portion 58. The first annular plate outer circumferential opposing surface 81b is an example of the "outer circumferential opposing surface" in the present invention.

[0140] The second annular plate 82 has a second annular plate end face 82a that faces the second mounting foot end face 57c in the axial direction. The second annular plate 82 is located on the other side of the second circular plate portion 422 of the second vibration-damping elastic member 42 in the axial direction. The second annular plate 82 also has a second through-hole 82c having an inner diameter equal to the inner diameter of the second sleeve 28. The shaft portion 71 of the fastening member 70 is inserted into the second through-hole 82c.

[0141] A predetermined gap S is provided in the radial direction between the second axially extending portion 59 and the second annular plate outer circumferential opposing surface 82b that is radially opposed to the second axially extending portion 59. The second annular plate outer circumferential opposing surface 82b is an example of the "outer circumferential opposing surface" in the present invention.

[0142] The other configurations of this compressor 6 are the same as those of the compressor 5 of the fifth embodiment, and the compressor 6 provides the same functions and effects as those of the compressor 5 of the fifth embodiment.

[0143] Example 7 A compressor 7 according to a seventh embodiment shown in FIG. 18 is a modified example of the compressor 3 according to the third embodiment.

[0144] In the compressor 7, a first elastic film 91 that buffers contact with the mounting foot side first radially opposing surface 50d is formed on the first outer circumferential abutment surface 23a of the sleeve-side first radially protruding portion 23 of the first sleeve 21. The first elastic film 91 is an example of the "elastic film" of the present invention.

[0145] The first elastic film 91 is formed over the entire first outer circumferential abutment surface 23a in the axial direction. The first elastic film 91 is formed by adhering a cylindrical rubber film to the first outer circumferential abutment surface 23a.

[0146] Although not shown in the figure, a first elastic membrane 91 is formed on the second outer peripheral abutment surface 24a of the sleeve side second radial protrusion 24 of the second sleeve 22 to cushion contact with the mounting foot side second radial opposing surface 50e.

[0147] The first elastic film 91 may be formed on the mounting foot side first radially opposed surface 50d that radially abuts against the first outer periphery abutting surface 23a, rather than on the first outer periphery abutting surface 23a. Similarly, the first elastic film 91 may be formed on the mounting foot side second radially opposed surface 50e that radially abuts against the second outer periphery abutting surface 24a, rather than on the second outer periphery abutting surface 24a.

[0148] Additionally, a second elastic membrane 92 that cushions contact with the first mounting foot end surface 50b is formed on the flange-side first axial protrusion 35 of the first flange 33. The second elastic membrane 92 is an example of the "elastic membrane" of the present invention.

[0149] The second elastic film 92 is formed on the entire protruding tip surface of the flange-side first axial protrusion 35. The second elastic film 92 is formed by adhering a ring-shaped rubber film to the protruding tip surface of the flange-side first axial protrusion 35.

[0150] Although not shown, a second elastic film 92 is formed on the flange-side second axial projection 36 of the second flange 34 to cushion contact with the second mounting leg end surface 50c.

[0151] The second elastic membrane 92 may be formed not on the flange-side first axial protrusion 35 but on the first mounting foot end surface 50b that abuts in the axial direction against the flange-side first axial protrusion 35. Similarly, the second elastic membrane 92 may be formed not on the flange-side second axial protrusion 36 but on the second mounting foot end surface 50c that abuts in the axial direction against the flange-side second axial protrusion 36.

[0152] In this compressor 7, when the housing 10 vibrates significantly in the radial direction of the through hole 51 under severe vibration conditions, the first elastic membrane 91 can suppress the contact noise that occurs when the sleeve side first radial protrusion 23 contacts the mounting foot side first radial opposing surface 50d and the contact noise that occurs when the sleeve side second radial protrusion 24 contacts the mounting foot side second radial opposing surface 50e.

[0153] Furthermore, when the housing 10 vibrates significantly in the axial direction of the through hole 51 under severe vibration conditions, the second elastic membrane 92 can suppress the contact noise that occurs when the flange side first axial protrusion 35 contacts the first mounting foot end face 50b and the contact noise that occurs when the flange side second axial protrusion 36 contacts the second mounting foot end face 50c.

[0154] The other configurations and effects are the same as those of the third embodiment.

[0155] Example 8 A compressor 8 according to an eighth embodiment shown in FIG. 19 is a modified example of the compressor 4 according to the fourth embodiment.

[0156] In this compressor 8, a third elastic film 93 is formed on the inner circumferential abutment surface 53a of the mounting foot side radial protrusion 53 of the mounting foot 54, to buffer abutment between the sleeve side first radially opposed surface 25b of the first sleeve 25 and the sleeve side second radially opposed surface 26b of the second sleeve 26. The third elastic film 93 is an example of the "elastic film" of the present invention.

[0157] The third elastic film 93 is formed over the entire inner circumferential abutment surface 53a in the axial direction. The third elastic film 93 is formed by adhering a cylindrical rubber film to the inner circumferential abutment surface 53a.

[0158] The third elastic membrane 93 may be formed on the sleeve-side first radially opposing surface 25b of the first sleeve 25 and the sleeve-side second radially opposing surface 26b of the second sleeve 26, instead of on the inner peripheral abutment surface 53a.

[0159] Furthermore, a fourth elastic film 94 that buffers contact with the first flange end surface 31 a of the first flange 31 is formed on the protruding tip surface of the mounting foot side first axial convex portion 55 of the mounting foot 54. The fourth elastic film 94 is an example of the “elastic film” of the present invention.

[0160] The fourth elastic film 94 is formed on the entire protruding tip surface of the mounting foot side first axial protrusion 55. The fourth elastic film 94 is formed by adhering a ring-shaped rubber film to the protruding tip surface of the mounting foot side first axial protrusion 55.

[0161] Although not shown in the figure, a fourth elastic membrane 94 is formed on the protruding tip surface of the second axial convex portion 56 on the mounting foot 54 to cushion contact with the second flange end surface 32a of the second flange 32.

[0162] The fourth elastic film 94 may be formed not on the mounting foot side first axial protrusion 55 but on the first flange end surface 31a that abuts in the axial direction with the mounting foot side first axial protrusion 55. Similarly, the fourth elastic film 94 may be formed not on the mounting foot side second axial protrusion 56 but on the second flange end surface 32a that abuts in the axial direction with the mounting foot side second axial protrusion 56.

[0163] In this compressor 8, when the housing 10 vibrates significantly in the radial direction of the through hole 51 under severe vibration conditions, the third elastic membrane 93 can suppress the contact noise that occurs when the mounting foot side radial protrusion 53 contacts the sleeve side first radial opposing surface 25b and the sleeve side second radial opposing surface 26b.

[0164] Furthermore, when the housing 10 vibrates significantly in the axial direction of the through hole 51 under severe vibration conditions, the fourth elastic membrane 94 can suppress the contact noise that occurs when the first axial protrusion 55 on the mounting foot side comes into contact with the first flange end face 31a and the contact noise that occurs when the second axial protrusion 56 on the mounting foot side comes into contact with the second flange end face 32a.

[0165] The other configurations and effects are the same as those of the fourth embodiment.

[0166] Example 9 A compressor 9 according to a ninth embodiment shown in FIG. 20 is a modified example of the compressor 5 according to the fifth embodiment.

[0167] In the compressor 9, a fifth elastic membrane 95 that buffers contact with the first axially extending portion 58 is formed on the first flange outer circumferential opposing surface 31b of the first flange 31. The fifth elastic membrane 95 is an example of the "elastic membrane" according to the present invention.

[0168] The fifth elastic film 95 is formed on the entire first flange outer periphery facing surface 31b. The fifth elastic film 95 is formed by adhering a cylindrical rubber film to the first flange outer periphery facing surface 31b.

[0169] Although not shown, a fifth elastic film 95 that buffers contact with the second axially extending portion 59 is formed on the second flange outer periphery opposing surface 32b of the second flange 32.

[0170] The fifth elastic film 95 may be formed not on the first flange outer periphery opposing surface 31b but on the first axially extending portion 58 that abuts radially against the first flange outer periphery opposing surface 31b. Similarly, the fifth elastic film 95 may be formed not on the second flange outer periphery opposing surface 32b but on the second axially extending portion 59 that abuts radially against the second flange outer periphery opposing surface 32b.

[0171] In this compressor 9, when the housing 10 vibrates significantly in the radial direction of the through hole 51 under severe vibration conditions, the fifth elastic membrane 95 can suppress the contact noise that occurs when the first axial extending portion 58 contacts the first flange outer circumferential opposing surface 31b and the contact noise that occurs when the second axial extending portion 59 contacts the second flange outer circumferential opposing surface 32b.

[0172] The other configurations and effects are the same as those of the fifth embodiment.

[0173] Although the present invention has been described above in accordance with Examples 1 to 9, it goes without saying that the present invention is not limited to the above Examples 1 to 9, and can be modified and applied as appropriate within the scope of the invention.

[0174] In Examples 1 to 9, the first vibration-damping elastic member 41 is formed by integrally forming the first cylindrical portion 411 and the first circular plate portion 412, but the present invention is not limited to this, and the first cylindrical portion 411 and the first circular plate portion 412 may be separate bodies. The same applies to the second vibration-damping elastic member 42.

[0175] In Examples 1 to 9, the first vibration-damping elastic member 41 is configured such that the first tubular portion 411 and the first circular plate portion 412 are integrally formed, but the present invention is not limited to this. For example, the first vibration-damping elastic member may be configured solely with a first cylindrical portion having a simple cylindrical shape without a first circular plate portion. In this case, however, it is necessary to provide a restricting portion on the inner peripheral surface of the mounting leg to restrict the end face of the first vibration-damping elastic member and compress the first vibration-damping elastic member in the axial direction between it and the first annular plate. The same applies to the second vibration-damping elastic member 42.

[0176] In Examples 1 to 4 and 7 to 9, the first sleeve has an integral first flange as the first annular plate, and the second sleeve has an integral second flange as the second annular plate, but the present invention is not limited thereto. For example, in Examples 1 to 4 and 7 to 9, a cylindrical first sleeve and a first annular plate separate from the first sleeve, a cylindrical second sleeve and a second annular plate separate from the second sleeve, or a single cylindrical sleeve and a first annular plate and a second annular plate separate from the sleeve may be used. Furthermore, in these cases, a washer 74 of the fastening member 70 set to a predetermined size may also be used as the first annular plate.

[0177] Similarly, in the sixth embodiment, the washer 74 of the fastening member 70 may be set to a predetermined size and used in combination as an annular plate that abuts against the first axially extending portion 58 in the radial direction.

[0178] In Example 7, at least one of the first elastic membrane 91 and the second elastic membrane 92 may be integrally formed with the first vibration-damping elastic member 41 by vulcanization bonding, or at least one of the first elastic membrane 91 and the second elastic membrane 92 may be integrally formed with the second vibration-damping elastic member 42 by vulcanization bonding.

[0179] Similarly, in Example 9, the fifth elastic film 95 and the first vibration-damping elastic member 41 may be integrally formed by vulcanization bonding, or the fifth elastic film 95 and the second vibration-damping elastic member 42 may be integrally formed by vulcanization bonding.

[0180] In Examples 2, 4, and 8, the first flange 31 may be a first annular plate separate from the first sleeve 25, in which case the first tapered inner circumferential surface 53b may be omitted from the mounting foot side radial protrusion 53. Similarly, in Examples 2, 4, and 8, the second flange 32 may be a second annular plate separate from the second sleeve 26, in which case the second tapered inner circumferential surface 53c may be omitted from the mounting foot side radial protrusion 53. Furthermore, in Examples 2, 4, and 8, both the first flange 31 and the second flange 32 may be first annular plates and second annular plates separate from the sleeve, in which case one of the first tapered inner circumferential surface 53b and the second tapered inner circumferential surface 53c may be omitted from the mounting foot side radial protrusion 53.

[0181] The following technical ideas can be extracted from the disclosure of the specification, drawings, etc.

[0182] (Appendix 1) a housing having an accommodating portion for accommodating a compressing portion that compresses a fluid and a mounting foot having a through hole formed therein; a cylindrical sleeve disposed inside the through hole and through which a fastening member for fastening the mounting foot to a mounting object is inserted; a pair of vibration-damping elastic members respectively disposed at both axial ends of the through hole, the vibration-damping elastic members having a cylindrical portion disposed between an inner peripheral surface of the mounting foot and an outer peripheral surface of the sleeve; a pair of annular plates that are integral with or separate from the sleeve, that are disposed outward of the vibration-damping elastic members in the axial direction, and that extend in a radial direction perpendicular to the axial direction; In a compressor in which the vibration-isolating elastic member is compressed in the axial direction between the mounting feet and the annular plate, and the vibration-isolating elastic member is compressed in the radial direction between the mounting feet and the sleeve, a radial protrusion that protrudes in the radial direction toward the other of the inner circumferential surface of the mounting foot and the outer circumferential surface of the sleeve is provided on one of the inner circumferential surface of the mounting foot and the outer circumferential surface of the sleeve, a compressor characterized in that, when the housing vibrates, the vibration-damping elastic member deforms, causing the radial convex portion to come into contact with the radially opposing surface that faces the radial convex portion on the other side in the radial direction, thereby defining a deformation limit of the vibration-damping elastic member in the radial direction.

[0183] (Appendix 2) the sleeve includes a first sleeve disposed at one end of the through hole in the axial direction and a second sleeve disposed at the other end of the through hole in the axial direction, the pair of annular plates includes a first flange integrally projecting in the radial direction from one end of the first sleeve in the axial direction, and a second flange integrally projecting in the radial direction from the other end of the second sleeve in the axial direction, the radial convex portion includes a sleeve-side first radial convex portion provided on an outer peripheral surface of the first sleeve and a sleeve-side second radial convex portion provided on an outer peripheral surface of the second sleeve, the pair of vibration-damping elastic members are a first vibration-damping elastic member disposed between the first flange and the sleeve-side first radial convex portion in the axial direction, and a second vibration-damping elastic member disposed between the second flange and the sleeve-side second radial convex portion in the axial direction, a first tapered outer circumferential surface that tapers toward a tip end in the axial direction is formed at the other end of the sleeve-side first radial convex portion, The compressor described in Appendix 1, wherein one end of the sleeve-side second radial convex portion in the axial direction is formed with a second tapered outer peripheral surface that tapers toward the tip in the axial direction.

[0184] (Appendix 3) the radial convex portion is a mounting foot-side radial convex portion provided on the inner circumferential surface of the mounting foot, The compressor according to claim 1 or 2, wherein one end of the mounting foot side radial convex portion in the axial direction is formed with a tapered inner circumferential surface whose inner diameter decreases from one end to the other end in the axial direction.

[0185] (Appendix 4) 4. The compressor according to any one of claims 1 to 3, wherein an elastic film is provided on one of the radial convex portion and the radial opposing surface to buffer contact between the radial convex portion and the radial opposing surface.

[0186] (Appendix 5) 5. The compressor according to any one of claims 1 to 4, wherein the protruding height of the radial convex portion is at least 2 / 3 of the thickness of the cylindrical portion in the radial direction when the mounting feet are fastened to the mounting object and the housing is in a vibration-free state.

[0187] (Appendix 6) a housing having an accommodating portion for accommodating a compressing portion that compresses a fluid and a mounting foot having a through hole formed therein; a cylindrical sleeve disposed inside the through hole and through which a fastening member for fastening the mounting foot to a mounting object is inserted; a pair of vibration-damping elastic members respectively disposed at both axial ends of the through hole, the vibration-damping elastic members having a cylindrical portion disposed between an inner peripheral surface of the mounting foot and an outer peripheral surface of the sleeve; a pair of annular plates that are integral with or separate from the sleeve, that are disposed outside the vibration-damping elastic members in the axial direction, and that extend in a radial direction perpendicular to the axial direction; In a compressor in which the vibration-isolating elastic member is compressed in the axial direction between the mounting feet and the annular plate, and the vibration-isolating elastic member is compressed in the radial direction between the mounting feet and the sleeve, an axial convex portion that protrudes in the axial direction toward the other of the mounting foot end surface and the annular plate end surface is provided on one of the mounting foot end surface of the mounting foot in the axial direction and the annular plate end surface of the annular plate that faces the mounting foot end surface in the axial direction; a compressor characterized in that, when the housing vibrates, the vibration-damping elastic member is deformed, and the axial convex portion comes into contact with the axial opposing surface of the other member that faces the axial convex portion in the axial direction, thereby defining a deformation limit of the vibration-damping elastic member in the axial direction.

[0188] (Appendix 7) 7. The compressor according to claim 6, wherein an elastic membrane is provided on one of the axial convex portion and the axial opposing surface to buffer contact between the axial convex portion and the axial opposing surface.

[0189] (Appendix 8) a housing having an accommodating portion for accommodating a compressing portion that compresses a fluid and a mounting foot having a through hole formed therein; a cylindrical sleeve disposed inside the through hole and through which a fastening member for fastening the mounting foot to a mounting object is inserted; a pair of vibration-damping elastic members respectively disposed at both axial ends of the through hole, the vibration-damping elastic members having a cylindrical portion disposed between an inner peripheral surface of the mounting foot and an outer peripheral surface of the sleeve; a pair of annular plates that are integral with or separate from the sleeve, that are disposed outward of the vibration-damping elastic member in the axial direction, and that extend in a radial direction perpendicular to the axial direction; In a compressor in which the vibration-isolating elastic member is compressed in the axial direction between the mounting feet and the annular plate, and the vibration-isolating elastic member is compressed in the radial direction between the mounting feet and the sleeve, An axially extending portion extending in the axial direction is provided on an end surface of the mounting foot in the axial direction, a compressor characterized in that, when the housing vibrates, the vibration-damping elastic member deforms, causing the axially extending portion to come into contact with an outer peripheral opposing surface of the annular plate that faces the axially extending portion in the radial direction, thereby defining a deformation limit of the vibration-damping elastic member in the radial direction.

[0190] (Appendix 9) 9. The compressor according to claim 8, wherein one of the axially extending portion and the outer peripheral opposing surface is provided with an elastic membrane that buffers contact between the axially extending portion and the outer peripheral opposing surface. [Industrial Applicability]

[0191] The present invention can be used in vehicles such as transportation vehicles and industrial vehicles in addition to passenger cars. [Explanation of symbols]

[0192] 1~9...Compressor 10. Housing 11...Storage section 12...Compression section 20...Sleeve 21...First sleeve 22...Second sleeve 23...Sleeve-side first radial convex portion (radial convex portion) 23b...First tapered outer surface 24...Sleeve side second radial convex portion (radial convex portion) 24b...Second tapered outer surface 25b...Sleeve-side first radially opposed surface (radially opposed surface) 26b...Sleeve-side second radially opposed surface (radially opposed surface) 30...Flange (annular plate) 31, 33...First flange (annular plate) 32, 34...Second flange (annular plate) 31b... First flange outer peripheral facing surface (outer peripheral facing surface) 32b... Second flange outer peripheral facing surface (outer peripheral facing surface) 33a...first flange end surface (annular plate end surface, axially opposing surface) 34a...Second flange end surface (annular plate end surface, axially opposing surface) 35... First axial convex portion on flange side (axial convex portion) 36... Flange side second axial convex portion (axial convex portion) 40...Vibration-proof elastic member 41...First vibration-isolating elastic member 42...Second vibration-isolating elastic member 50, 52, 54, 57...Mounting feet 50b, 52b, 54b, 57b...First mounting foot end surface (mounting foot end surface, axially opposing surface) 50c, 52c, 54c, 57c...Second mounting foot end surface (mounting foot end surface, axially opposing surface) 50d...First radially opposed surface on mounting foot side (radially opposed surface) 50e...Second radially opposed surface on the mounting foot side (radially opposed surface) 51...Through hole 53...Radial convex portion on mounting foot side (radial convex portion) 53b...First tapered inner peripheral surface (tapered inner peripheral surface) 53c...Second tapered inner peripheral surface (tapered inner peripheral surface) 55... First axial convex portion on mounting foot side (axial convex portion) 56...Second axial convex portion on mounting foot side (axial convex portion) 58...First axial extension part (axial extension part) 59...Second axial extension part (axial extension part) 60...Installation target 70...Fastening member 81b... First annular plate outer peripheral facing surface (outer peripheral facing surface) 82b... Second annular plate outer peripheral facing surface (outer peripheral facing surface) 91~95...1st to 5th elastic membranes (elastic membranes) 411...First cylindrical part (cylindrical part) 421...Second cylinder part (cylindrical part)

Claims

1. a housing having an accommodating portion for accommodating a compressing portion that compresses a fluid and a mounting foot having a through hole formed therein; a cylindrical sleeve disposed inside the through hole and through which a fastening member for fastening the mounting foot to a mounting object is inserted; a pair of vibration-damping elastic members respectively disposed at both axial ends of the through hole, the vibration-damping elastic members having a cylindrical portion disposed between an inner peripheral surface of the mounting foot and an outer peripheral surface of the sleeve; a pair of annular plates that are integral with or separate from the sleeve, that are disposed outward of the vibration-damping elastic members in the axial direction, and that extend in a radial direction perpendicular to the axial direction; In a compressor in which the vibration-isolating elastic member is compressed in the axial direction between the mounting feet and the annular plate, and the vibration-isolating elastic member is compressed in the radial direction between the mounting feet and the sleeve, a radial protrusion that protrudes in the radial direction toward the other of the inner circumferential surface of the mounting foot and the outer circumferential surface of the sleeve is provided on one of the inner circumferential surface of the mounting foot and the outer circumferential surface of the sleeve, a compressor characterized in that, when the housing vibrates, the vibration-damping elastic member deforms, causing the radial convex portion to come into contact with the radially opposing surface that faces the radial convex portion on the other side in the radial direction, thereby defining a deformation limit of the vibration-damping elastic member in the radial direction.

2. the sleeve includes a first sleeve disposed at one end of the through hole in the axial direction and a second sleeve disposed at the other end of the through hole in the axial direction, the pair of annular plates includes a first flange integrally protruding in the radial direction from one end of the first sleeve in the axial direction, and a second flange integrally protruding in the radial direction from the other end of the second sleeve in the axial direction, the radial convex portion includes a sleeve-side first radial convex portion provided on an outer peripheral surface of the first sleeve and a sleeve-side second radial convex portion provided on an outer peripheral surface of the second sleeve, the pair of vibration-damping elastic members include a first vibration-damping elastic member disposed between the first flange and the sleeve-side first radial convex portion in the axial direction, and a second vibration-damping elastic member disposed between the second flange and the sleeve-side second radial convex portion in the axial direction, a first tapered outer circumferential surface that tapers toward a tip end in the axial direction is formed at the other end of the sleeve-side first radial convex portion, 2. The compressor according to claim 1, wherein one end of the sleeve-side second radial convex portion in the axial direction is formed with a second tapered outer peripheral surface that tapers toward a tip in the axial direction.

3. the radial convex portion is a mounting foot-side radial convex portion provided on the inner circumferential surface of the mounting foot, 2. The compressor according to claim 1, wherein one end of the mounting foot-side radial convex portion in the axial direction is formed with a tapered inner circumferential surface whose inner diameter decreases from one end to the other end in the axial direction.

4. The compressor according to any one of claims 1 to 3, wherein an elastic film is provided on one of the radial convex portion and the radially opposing surface to buffer contact between the radial convex portion and the radially opposing surface.

5. 4. The compressor according to claim 1, wherein the protruding height of the radial convex portion is at least two-thirds of the thickness of the cylindrical portion in the radial direction when the mounting feet are fastened to the mounting object and the housing is in a vibration-free state.

6. a housing having an accommodating portion for accommodating a compressing portion that compresses a fluid and a mounting foot having a through hole formed therein; a cylindrical sleeve disposed inside the through hole and through which a fastening member for fastening the mounting foot to a mounting object is inserted; a pair of vibration-damping elastic members respectively disposed at both axial ends of the through hole, the vibration-damping elastic members having a cylindrical portion disposed between an inner peripheral surface of the mounting foot and an outer peripheral surface of the sleeve; a pair of annular plates that are integral with or separate from the sleeve, that are disposed outside the vibration-damping elastic members in the axial direction, and that extend in a radial direction perpendicular to the axial direction; In a compressor in which the vibration-isolating elastic member is compressed in the axial direction between the mounting feet and the annular plate, and the vibration-isolating elastic member is compressed in the radial direction between the mounting feet and the sleeve, an axial convex portion that protrudes in the axial direction toward the other of the mounting foot end surface and the annular plate end surface is provided on one of the mounting foot end surface of the mounting foot in the axial direction and the annular plate end surface of the annular plate that faces the mounting foot end surface in the axial direction; a compressor characterized in that, when the housing vibrates, the vibration-damping elastic member is deformed, and the axial convex portion comes into contact with the axial opposing surface of the other member that faces the axial convex portion in the axial direction, thereby defining a deformation limit of the vibration-damping elastic member in the axial direction.

7. 7. The compressor according to claim 6, wherein an elastic film is provided on one of the axial convex portion and the axially opposing surface to buffer contact between the axial convex portion and the axially opposing surface.

8. a housing having an accommodating portion for accommodating a compressing portion that compresses a fluid and a mounting foot having a through hole formed therein; a cylindrical sleeve disposed inside the through hole and through which a fastening member for fastening the mounting foot to a mounting object is inserted; a pair of vibration-damping elastic members respectively disposed at both axial ends of the through hole, the vibration-damping elastic members having a cylindrical portion disposed between an inner peripheral surface of the mounting foot and an outer peripheral surface of the sleeve; a pair of annular plates that are integral with or separate from the sleeve, that are disposed outward of the vibration-damping elastic member in the axial direction, and that extend in a radial direction perpendicular to the axial direction; In a compressor in which the vibration-isolating elastic member is compressed in the axial direction between the mounting feet and the annular plate, and the vibration-isolating elastic member is compressed in the radial direction between the mounting feet and the sleeve, An axially extending portion extending in the axial direction is provided on an end surface of the mounting foot in the axial direction, a compressor characterized in that, when the housing vibrates, the vibration-damping elastic member deforms, causing the axially extending portion to come into contact with an outer peripheral opposing surface of the annular plate that faces the axially extending portion in the radial direction, thereby defining a deformation limit of the vibration-damping elastic member in the radial direction.

9. 9. The compressor according to claim 8, wherein an elastic film is provided on one of the axially extending portion and the outer peripheral facing surface to buffer contact between the axially extending portion and the outer peripheral facing surface.

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