JP2000283031A - Rotating machine with electromagnetic clutch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the friction area of the drive side rotary member of an electromagnetic clutch by minifying the diameter of a bearing. SOLUTION: In the compressor with an electromagnetic clutch providing a shaft seal device 8 between a rotary shaft 7 and the inner wall surface of a housing 6, a support cover 9 formed of the body different from the housing 6 is arranged on the outer periphery side of the tip of the rotary shaft 7 and the drive side rotary member 1 of the electromagnetic clutch C is supported rotatably on the support cover 9 through a bearing 11. The support cover 9 is fixed to the housing 6 by a bolt 10. Thereby, the shaft seal device 8 can be assembled into the housing 6 before installing the support cover. Therefore, as the diameter of the bearing support part 9a of the support cover 9 can be made smaller than the outer diameter of the shaft seal device 8, the diameter of the bearing 11 is minified and the friction area of the drive side rotary member 1 can be increased.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotating machine having an electromagnetic clutch for interrupting power transmission, and is suitable as a compressor for a vehicle air conditioner.

[0002]

2. Description of the Related Art Conventionally, in a compressor of an air conditioner for a vehicle, a tip end of a rotating shaft protrudes outside a housing and is connected to an electromagnetic clutch, and power of a vehicle engine is transmitted to the rotating shaft via the electromagnetic clutch. It has become. With such a structure, oil and refrigerant inside the compressor leak out of the housing along the protrusion of the rotating shaft, so that in order to prevent this, the outer peripheral surface of the rotating shaft and the inner wall surface of the housing are connected. A shaft sealing device (shaft seal) is provided between them.

Meanwhile, the electromagnetic clutch has a drive-side rotating member that rotates by receiving power from a vehicle engine, while a housing of the compressor is provided with a cylindrical boss protruding to the outside along a rotating shaft. On the outer peripheral surface of the boss portion, a drive-side rotating member of the electromagnetic clutch is rotatably disposed via a bearing.

[0004]

However, since the shaft sealing device is incorporated into the housing of the compressor through the cylindrical boss, the inner diameter of the boss must necessarily be larger than the outer diameter of the shaft sealing device. Yes, and the inner diameter of the driving side rotating member needs to be larger than the outer diameter of the bearing arranged on the outer peripheral surface of the boss.

On the other hand, since the outer diameter of the electromagnetic clutch is limited, the difference between the inner and outer diameters of the driving-side rotating member is inevitably reduced, and the friction area (the area facing the armature) of the driving-side rotating member is reduced. There is a problem that the transmission torque of the motor becomes small. The present invention has been made in view of the above points, and has as its object to reduce the diameter of a bearing to increase the friction area of a driving-side rotating member of an electromagnetic clutch.

Another object of the present invention is to make it possible to easily construct a discharge path for leaking oil from a shaft sealing device.

[0007]

According to the first aspect of the present invention, a shaft sealing device (8) is provided between a rotating shaft (7) and an inner wall surface of a housing (6). In a rotary machine with an electromagnetic clutch, a support cover (9) formed separately from a housing (6) of the rotary machine is arranged on the outer peripheral side of a tip end portion of a rotary shaft (7) to drive an electromagnetic clutch (C). The side rotating member (1) is rotatably supported on a support cover (9) via a bearing (11).

Thus, the shaft sealing device (8) can be assembled in the housing (6) of the rotating machine before the mounting of the support cover (9). Therefore, the support cover (9)
Of these, the support portion (9a) of the bearing (11) can be made smaller in diameter than the outer diameter of the shaft sealing device (8). as a result,
Since the diameter of the bearing (11) can be reduced and the inner diameter of the driving-side rotating member (1) can be reduced, the friction area of the driving-side rotating member (1) can be increased, and the transmission torque of the electromagnetic clutch can be increased.

According to the second aspect of the present invention, the electromagnetic coil (2) is provided on the driving side rotating member (1), and the brush (18,
19), and a sliding energizing mechanism including a slip ring (20, 21) in which the brushes (18, 19) are pressed and slid, and the electromagnetic coil (2) is energized through the sliding energizing mechanism. It is characterized by doing. Thereby, the electromagnetic coil (2) is configured as a coil rotating type in which the electromagnetic coil (2) rotates integrally with the driving-side rotating member (1), and the magnetic circuit of the clutch is simpler than that of the fixed coil type, and magnetic efficiency can be improved.

According to the third aspect of the present invention, the slip rings (20, 21) are held on the inner peripheral side of the driving side rotating member (1) via the slip ring holding member (22), and the brushes (18, 19) are held. ) Is characterized by being held on the outer peripheral side of the support cover (9) via a brush holding member (23). As a result, the lead wires of the brushes (18, 19) can be taken out directly from the brush holding member (23) to the outside, so that it is not necessary to open a lead wire taking-out hole in the housing (6) of the rotating machine. Cost can be reduced.

In the invention according to claim 4, the bearing (11)
And a brush holding member (2).
The support cover (9) is formed in a substantially cylindrical shape having a large-diameter cylindrical portion (9b) for supporting 3).
Such a substantially cylindrical support cover (9) can be relatively easily formed integrally by pressing a ferrous metal while securing necessary strength.

[0012] The invention according to claim 5 is characterized in that a seal member (26) is arranged between the outer peripheral surface of the brush holding member (23) and the inner peripheral surface of the drive side rotating member (1). . Accordingly, it is possible to prevent the foreign matter such as water and dust from entering the sliding contact portion between the brushes (18, 19) and the slip rings (20, 21) by the sealing material (26).

According to the present invention, an oil discharge passage (2) for discharging oil leaking from the shaft sealing device (8) is provided between the housing (6) of the rotary machine and the support cover (9).
According to a seventh aspect of the present invention, the groove (6c) formed on the outer surface of the housing (6) of the rotary machine is formed on the plate surface of the support cover (9). It is characterized in that an oil discharge path (27) is formed by covering.

According to the sixth and seventh aspects of the present invention, the oil discharge passage (27) can be formed by forming the concave groove (6c) on the outer surface of the housing (6). Therefore, it is not necessary to make a hole in the housing (6) for oil discharge, and the groove (6c) can be easily formed by die-casting the housing (6), thereby reducing the processing cost.

The reference numerals in parentheses of the above-mentioned means indicate the correspondence with the concrete means described in the embodiments described later.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view of an electromagnetic clutch portion in a compressor of a vehicle air conditioner to which the present invention is applied. Reference numeral 1 denotes a drive-side rotor of an electromagnetic clutch C, and a multiple V-belt is engaged with an outer peripheral portion thereof. A pulley portion 1a having multiple V-grooves is integrally joined.

The driving-side rotor 1 is a driving-side rotating member that rotates by receiving a rotational force from a vehicle engine via a belt (not shown), and is made of an iron-based metal (ferromagnetic material) such as low-carbon steel. It is formed into a U-shaped double ring shape. In this double ring shape, the inner cylindrical portion is
The small-diameter inner cylindrical portion 1b and the large-diameter inner cylindrical portion 1c are stepped. On the other hand, the outer peripheral cylindrical portion 1d has a straight ordinary cylindrical shape.

An annular concave portion 1e is formed between the inner cylindrical portions 1b and 1c and the outer cylindrical portion 1d, and a friction surface 1f is formed on a radial side surface of the rotor 1. Reference numeral 2 denotes an electromagnetic coil for generating an electromagnetic attraction force, which is installed in the concave portion 1 e of the driving-side rotor 1. This electromagnetic coil 2 is wound on a resin winding frame 2a,
Is insulated and fixed to the concave portion 1e by the resin member 3 molded into the concave portion 1e. Therefore, the electromagnetic coil 2 rotates integrally with the drive-side rotor 1.

Reference numeral 4 denotes a friction plate made of an iron-based metal (ferromagnetic material) such as low-carbon steel, which has a substantially ring-like shape, and is provided at a plurality of circumferential locations of the ring-like shape in the radial direction. The protrusion 4a and the protrusion 4b in the outer diameter direction are integrally formed. After the electromagnetic coil 2 is insulated and fixed in the concave portion 1e of the drive-side rotor 1 by the resin member 3, the friction plate 4 is fixed to the small-diameter-side inner peripheral cylindrical portion of the rotor 1 at the plurality of projections 4a and projections 4b. 1b and the outer peripheral cylindrical portion 1c are supported and fixed to axial ends (left ends in FIG. 1). In the friction plate 4, a magnetic blocking groove 4c is provided at a radially intermediate portion.
Is provided.

Reference numeral 5 denotes a compressor which is a driven device (rotary machine), and reference numeral 6 denotes a front housing of the compressor 5 located on the electromagnetic clutch side. The front housing 6 is made of an aluminum-based metal, and a boss portion 6a that projects cylindrically outward in the axial direction is integrally formed at the center of the front housing 6 by die casting. Here, the compressor 5 is for compressing a refrigerant in a refrigeration cycle of a vehicle air conditioner, and may be any type such as a well-known swash plate type, a vane type, and a scroll type.

Reference numeral 7 denotes a rotating shaft of the compressor 5, which is rotatably disposed at the center of the boss 6a, and the tip of the rotating shaft 7 projects further axially outward than the boss 6a. A screw hole 7 a is provided at the tip of the rotating shaft 7. A shaft sealing device 8 is disposed between the inner wall of the boss 6a and the outer peripheral surface of the rotating shaft 7. The shaft sealing device 8 prevents the lubricating oil, refrigerant and the like inside the compressor 5 from leaking to the outside along the surface of the tip of the rotating shaft 7.

Reference numeral 9 denotes a support cover formed separately from the front housing 6 and uses an iron-based metal to secure a necessary strength for supporting the drive-side rotor 1 and press-processes the iron-based metal. It is molded into a cylindrical shape. More specifically, the support cover 9 is a small-diameter cylindrical portion 9a at the tip end in the axial direction.
, A large-diameter cylindrical portion 9b following the small-diameter cylindrical portion 9a, and a flange portion 9c extending radially outward from an end of the large-diameter cylindrical portion 9b.

The support cover 9 is fastened and fixed to the front housing 6 by a plurality of bolts 10 at the flange 9c. A bearing 11 rotatably supports the driving-side rotor 1 on a small-diameter cylindrical portion 9a of the support cover 9. In this example, the bearing 11 includes an outer ring 11a fixed to the inner peripheral surface of the driving-side rotor 1 and a small-diameter bearing. The rolling bearing includes an inner ring 11b fixed to the outer peripheral surface of the cylindrical portion 9a and a ball 11c rotatably held between the inner ring 11b and the inner ring 11b.

The small-diameter cylindrical portion 9a of the support cover 9 is
Since it constitutes the support surface of the bearing 11 and requires high dimensional accuracy, it is preferable to perform cutting after press working to finish the outer peripheral surface of the small-diameter cylindrical portion 9a. Reference numeral 12 denotes an armature disposed opposite to the friction surface 1f and the friction plate 4 of the rotor 1, and is formed of an iron-based metal (ferromagnetic material) in a ring-shaped flat plate shape, and magnetically interrupts at two radially intermediate portions. Grooves 12a and 12b are provided. This armature 12 is held by a spring force of a leaf spring (elastic connecting member) 13 at a position (a position shown in FIG. 1) at a predetermined minute distance from the friction surface 1f of the rotor 1 when the electromagnetic coil 2 is not energized. Has become.

In this embodiment, the leaf spring 13 is a disc spring having a disc shape, and the surface of the leaf spring 13 and the surface on the anti-friction surface side of the armature 12 (the left side surface in FIG. 1) are made of rubber. They are integrally connected via an elastic member 14 for absorbing operation noise. The inner periphery of the leaf spring 13 is connected to the hub 16 by a plurality of rivets 15. The hub 16 is a driven-side rotating member, and is a plate portion 16 extending in a radial direction of ferrous metal.
a and a central cylindrical portion 16b. The central cylindrical portion 16b of the hub 16 is fitted to the rotating shaft 7 of the compressor 5 by preventing rotation by spline coupling or the like. Then, the bolt 1 is inserted into the screw hole 7a at the tip of the rotating shaft 7.
The hub 16 is integrally connected to the rotating shaft 7 by screwing the hub 7.

Next, a description will be given of a configuration of an energizing path to the electromagnetic coil 2 which rotates together with the rotor 1. In this embodiment, the inner peripheral surface of the large-diameter inner peripheral cylindrical portion 1 c of the rotor 1 and the large The brushes 18, 1 are provided between the outer peripheral surface of the cylindrical portion 9b.
9 and a sliding energizing mechanism having slip rings 20 and 21 on which the brushes 18 and 19 are pressed and slid.

The layout of the sliding energizing mechanism is specifically configured as follows. A slip ring holding member 2 is provided on the inner circumferential surface of the large-diameter inner circumferential cylindrical portion 1c of the rotor 1.
2 is arranged with a predetermined gap between the support cover 9 and the outer peripheral surface of the large-diameter cylindrical portion 9b. The holding member 22 is formed in an approximately ring shape using an electric insulating material such as a resin. In this example, the relationship is set such that the diameter of the positive side slip ring 20 <the diameter of the negative side slip ring 21.
The two slip rings 20 and 21 are arranged concentrically and are insert-molded in the holding member 22. Thus, the two positive and negative slip rings 20 and 21 are located on the inner peripheral side of the rotor 1 and are integrally held by the holding member 22.

The outer peripheral portion of the above-described slip ring holding member 22 is fitted and fixed (for example, adhesively fixed) to a fitting concave groove formed in the inner cylindrical portion 1c of the rotor 1. Thereby, the slip ring holding member 22 can be integrated with the inner peripheral side of the rotor 1, and the slip ring holding member 22 rotates integrally with the rotor 1. Both slip rings 20, 2
Numeral 1 is made of a conductive metal such as copper. A positive lead wire (not shown) is provided on a positive slip ring 20 located on the inner peripheral side, and a negative slip ring 21 is located on the outer peripheral side.
Are electrically connected to respective lead wires (not shown) on the negative electrode side.

The lead wires of the slip rings 20 and 21 are wired into the recess 1e of the rotor 1 through through holes (not shown) provided in the inner cylindrical portion 1c or 1b of the rotor 1, and the winding of the electromagnetic coil 2 is performed. It is electrically coupled to the starting end and the winding end. On the other hand, a brush holding member 23 is disposed on the outer peripheral surface of the large-diameter cylindrical portion 9b of the support cover 9. The brush holding member 23 is formed of an electrical insulating material such as a resin into a substantially cylindrical shape. Then, two brush storage recesses 23a and 23b having an arcuate cross section are formed at symmetric positions approximately 180 ° apart in the circumferential direction of the brush holding member 23. The brush storage recesses 23a and 23b are formed in a shape having a sufficient axial dimension (depth) extending along the axial direction of the brush holding member 23, and the bottoms of the recesses 23a and 23b are formed by a ring-shaped bottom portion 23c. It is closed.

The brushes 18, 19 are formed in an arcuate cross section along the brush accommodating recesses 23a, 23b. The positive brush 18 is accommodated in one of the brush accommodating recesses 23a so as to be slidable in the axial direction. A coil spring 24 is disposed between the side brush 18 and the bottom surface 23c of the brush housing recess 23a as an elastic pressing member. Therefore, the end of the positive brush 18 always presses against the positive slip ring 20 by the spring force of the coil spring 24.

Similarly, the brush 19 on the negative electrode side is slidably accommodated in the other brush accommodating recess 23b in the axial direction, and the brush 19 on the negative electrode side and the bottom surface 23 of the brush accommodating recess 23b.
The coil spring 25 is disposed as an elastic pressing member between the coil spring 25 and the coil spring 25. Accordingly, the brush 19 on the negative electrode side is always pressed against the slip ring 21 on the negative electrode side by the spring force of the coil spring 25.

The brush holding member 23 is provided on the support cover 9.
Is fixed to the outer peripheral surface of the large-diameter cylindrical portion 9b by press fitting, screwing or the like. Positive brush 18 and negative brush 19
Are electrically connected to lead wires (not shown) on the positive electrode side and the negative electrode side, respectively. The lead wires pass through holes (not shown) of the brush holding member 23 and are radially outward of the brush holding member 23. It is taken out and electrically connected to an external control circuit for interrupting the energization of the electromagnetic coil 2.

A ring-shaped sealing member 26 is disposed between the outer peripheral surface of the brush holding member 23 and the inner peripheral surface of the large-diameter inner cylindrical portion 1c of the rotor 1. The sealing material 26 is for preventing foreign matters such as water and dust from entering the sliding contact between the brushes 18 and 19 and the slip rings 20 and 21. In this embodiment, the sealing material 26 is used for bonding or the like. Means for fixing the seal material 2 to the outer peripheral surface of the brush holding member 23.
The outer peripheral surface of the rotor 6 slides on the inner peripheral surface of the rotor 1 when the rotor 1 rotates.

As an example of the material of the seal member 26, the seal member 26 has heat resistance against frictional heat caused by sliding with the inner peripheral surface of the rotor, and
A felt material excellent in water absorption is suitable. by the way,
Although the shaft sealing device 8 is arranged on the inner peripheral side of the boss 6 a of the front housing 6 of the compressor 5, it is inevitable that some oil leaks from the shaft sealing device 8 with the rotation of the rotating shaft 7. . Therefore, the oil discharge passage 27 for discharging the oil leaking from the shaft sealing device 8 as shown by the arrow A is configured as follows.

That is, of the boss 6a of the front housing 6 of the compressor 5, a notch 6b
And a concave groove 6c communicating with the notch 6b is formed in an inverted L shape so that the side surface of the front housing 6 extends downward from the bottom of the boss 6a. Here, the notch 6b has a simple notch at the tip of the boss 6a, and the inverted L-shaped groove 6c may have a simple notch on the outer surface of the front housing 6. The portion 6b and the groove 6c are both the front housing 6
It can be easily formed simultaneously with die casting.

The oil discharge path 27 can be formed by disposing the support cover 9 on the groove 6c as shown in FIG. 2 and covering the groove 6c with the plate surface of the support cover 9.
To describe a design example of the concave groove portion 6c, it is preferable to set the width W to about 5 mm and the depth h to about 2 mm in order to reliably discharge the leaking oil. The cross-sectional shape of the concave groove 6c is not limited to the rectangular shape shown in FIG. 2, but may be an arc shape or the like.

Next, the operation of the above configuration will be described.
Since the rotor 1 is rotatably supported on the outer peripheral surface of the support cover 9 by the bearing 11, when a vehicle engine (not shown) is operated, rotation of the crank pulley of the engine is performed via a belt (not shown). Transmitted to the pulley 1a,
The rotor 1 and the electromagnetic coil 2 always rotate. Rotor 1
With the rotation of the electromagnetic coil 2, the slip ring holding member 22 and the slip rings 20, 21 also rotate together. On the other hand, the brushes 18 and 19, the brush holding member 23, the coil springs 24 and 25, etc. are all held on the support cover 9 side and do not rotate. Accordingly, one end faces in the axial direction of the brushes 18 and 19 are pressed against the rotating slip rings 20 and 21 by the spring force of the coil springs 24 and 25 and slide.

In order to operate the compressor 5 in the above-mentioned state, when the voltage of the vehicle-mounted power supply battery is applied between the brushes 18 and 19 by an external control circuit (not shown), the brushes 18 and 19 pass through the slip rings 20 and 21. A current flows through the electromagnetic coil 2. Then, a magnetic flux flows through a magnetic circuit (broken line B in FIG. 1) formed between the rotor 1 and the friction plate 4 and the armature 12, so that the friction surface 1f of the rotor 1 and the friction plate 4 and the armature 12 Generates an electromagnetic attraction force. As a result, the armature 12 is attracted and attracted to the friction surface 1f and the friction plate 4 of the rotor 1 against the axial elastic force of the leaf spring 13 (force in the left direction in FIG. 1).

As a result, the rotor 1 and the armature 12 rotate integrally, and the armature 12 further
4. It rotates integrally with the hub 16 via the leaf spring 13 and the rivet 15. Therefore, the rotation of the rotor 1 is transmitted to the rotating shaft 7 of the compressor 5 via the hub 16, and the compressor 5 operates. On the other hand, when the compressor 5 is stopped, the power supply to the electromagnetic coil 2 is cut off by the external control circuit. This allows
Since the electromagnetic attraction force disappears, the armature 12 is separated from the friction surface 1f of the rotor 1 and the friction plate 4 by the axial elastic force of the leaf spring 13, and the rotation transmission to the rotary shaft 7 of the compressor 5 is interrupted. , The compressor 5 stops.

Since the support cover 9 is formed separately from the front housing 6 of the compressor 5, the shaft sealing device 8 can be assembled in the front housing 6 before the support cover 9 is attached. . Therefore, the inside diameter of the small-diameter cylindrical portion 9a of the support cover 9 that supports the bearing 11 can be made smaller than the outside diameter of the shaft sealing device 8, thereby reducing the outside diameter of the small-diameter cylindrical portion 9a of the support cover 9 to the large-diameter cylindrical portion 9b. 20 mm smaller than the outer diameter of

As described above, the inner diameter of the small-diameter cylindrical portion 9a that supports the bearing 11 can be made smaller than the outer diameter of the shaft sealing device 8, so that the diameter of the bearing 11 can be reduced.
Can be reduced in inner diameter. Therefore, the friction area (the area of the friction surface 1f and the friction plate 4) facing the armature 12 in the rotor 1 can be increased, and the rotor 1 and the armature 12 can be increased.
The number of magnetic poles (where the magnetic flux intersects) between
As shown in FIG.

When the diameter cannot be reduced to 20 mm, the number of magnetic poles is four. According to this embodiment,
By increasing the number of magnetic poles from 4 poles to 6 poles, the transmission torque of the electromagnetic clutch can be improved by about 8%. Further, by improving the transmission torque, it is possible to achieve low cost and light weight by reducing the thickness of the material of the magnetic circuit component. By the way, a part of the lubricating oil inside the compressor 5 passes through the shaft sealing device 8 and leaks outward in the axial direction, and the leaking oil flows from the cutout portion 6b of the boss portion 6a to the oil discharge passage 27b. Through the compressor 5 as shown by the arrow A.

(Other Embodiments) In the above embodiment, the electromagnetic coil 2 is of a coil rotating type in which the electromagnetic coil 2 rotates integrally with the rotor 1. However, the electromagnetic coil 2 is opposed to the rotor 1 via a minute gap. The present invention can be applied to a coil fixed type electromagnetic clutch in which a fixed magnetic member is provided and the electromagnetic coil 2 is disposed on the fixed magnetic member. In this case, a sliding energizing mechanism including the brushes 18 and 19 and the slip rings 20 and 21 becomes unnecessary.

In the above embodiment, the positive (+) side and the negative (-) side described as the current path to the electromagnetic coil 2 are described.
It goes without saying that the position of the member on the side may be switched between the positive electrode and the negative electrode.

[Brief description of the drawings]

FIG. 1 is a vertical cross-sectional view of an electromagnetic clutch section showing one embodiment of the present invention.

FIG. 2 is a cross-sectional view of the oil discharge path of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Rotor (drive side rotating member) 2: Electromagnetic coil, 5 ...
Compressor (rotary machine), 6 front housing, 6a
Boss part, 7 ... rotating shaft, 8 ... shaft sealing device, 9 ... support cover,
DESCRIPTION OF SYMBOLS 11 ... Bearing, 12 ... Armature, 13 ... Leaf spring (elastic connecting member), 16 ... Hub (driven side rotating member), 18, 19
... brushes, 20, 21 ... slip rings, 22 ... slip ring holding members, 23 ... brush holding members, 26 ... sealing materials, 27 ... oil discharge passages.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yuichi Aoki 1-1-1, Showa-cho, Kariya-shi, Aichi F-term in DENSO Corporation (reference) 3H076 AA05 BB28 BB43 CC12 CC17 CC36 CC70

Claims (7)

[Claims] 1. A tip of a rotating shaft (7) protrudes out of a housing (6), and an electromagnetic clutch (C) is connected to a tip of the rotating shaft (7).
An electromagnetic clutch for transmitting power from a drive source to the rotating shaft (7) via the shaft, and providing a shaft sealing device (8) between the rotating shaft (7) and an inner wall surface of the housing (6). A rotary cover (9), wherein a support cover (9) formed separately from the housing (6) is disposed on an outer peripheral side of a tip portion of the rotary shaft (7); A driving-side rotating member (1) that rotates by power transmitted from the driving source, an electromagnetic coil (2) that generates an electromagnetic attraction force when energized, and an electromagnetic coil (2) that is disposed to face the driving-side rotating member (1); An armature (12) that is attracted to the driving-side rotating member (1) by an electromagnetic attraction force generated by the coil (2), and an elastic connecting member (13) that connects the armature (12) to the rotating shaft (7). , 14), wherein the driving-side rotating member is provided. A rotary machine with an electromagnetic clutch, wherein (1) is rotatably supported on the support cover (9) via a bearing (11). 2. The electromagnetic coil (2) is provided on the driving-side rotating member (1), and brushes (18, 19) and a slip ring (2) on which the brushes (18, 19) are pressed and slid.
The rotary machine with an electromagnetic clutch according to claim 1, further comprising a sliding energizing mechanism including (0, 21), and energizing the electromagnetic coil (2) through the sliding energizing mechanism. 3. A slip ring holding member (22) for holding the slip ring (20, 21) on the inner peripheral side of the drive side rotating member (1), and the brush (18, 19) to the support cover (20). The rotary machine with an electromagnetic clutch according to claim 2, further comprising: a brush holding member (23) held on the outer peripheral side of (9). 4. The support cover (9) is connected to the bearing (1).
4. The device according to claim 3, wherein the cylindrical member is formed in a substantially cylindrical shape having a small-diameter cylindrical portion (9 a) for supporting the brush holding member (23) and a large-diameter cylindrical portion (9 b) for supporting the brush holding member (23). A rotary machine with an electromagnetic clutch as described. 5. A sealing material (26) is arranged between an outer peripheral surface of the brush holding member (23) and an inner peripheral surface of the driving side rotating member (1). Or a rotary machine with an electromagnetic clutch according to 4. 6. An oil discharge path (27) configured to discharge oil leaking from the shaft sealing device (8) between the housing (6) and the support cover (9). Item 6. The rotary machine with an electromagnetic clutch according to any one of Items 1 to 5. 7. The oil discharge path (27) is formed by covering a concave groove (6c) formed on an outer surface of the housing (6) with a plate surface of the support cover (9). The rotary machine with an electromagnetic clutch according to any one of claims 1 to 6, wherein: