KR20230146894A - Clutch and compressor including the same - Google Patents

Abstract

The present invention includes a hub that is fastened to a rotating shaft of a compressor and can rotate with the rotating shaft while its position is fixed; a disk fastened to the hub and capable of rotating together with the hub; a pulley that rotates by receiving power from the driving source of the compressor; a field coil assembly that couples the hub and the disk, and is magnetized when power is applied to contact or separate the disk and the pulley; and a cover provided to cover one surface of the disk and surround a friction surface between the disk and the pulley.
By this, it is possible to prevent foreign substances from entering the friction surface between the pulley and the disk.

Description

Clutch and compressor including same {CLUTCH AND COMPRESSOR INCLUDING THE SAME}

The present invention relates to a clutch and a compressor including the same, and more specifically, to a clutch that is magnetized to selectively connect and disconnect a drive source and a rotating shaft, and to a compressor including the same.

Generally, automobiles are equipped with air conditioning (A/C) for interior cooling and heating. This air conditioning device is a component of the cooling system and includes a compressor that compresses low-temperature, low-pressure gaseous refrigerant drawn from the evaporator into high-temperature, high-pressure gaseous refrigerant and sends it to the condenser.

Compressors include a reciprocating type that compresses the refrigerant according to the reciprocating motion of the piston, and a rotary type that performs compression while rotating. Depending on the transmission method of the drive source, the reciprocating type includes the crank type, which uses a crank to transmit power to a plurality of pistons, and the swash plate type, which uses a rotating shaft on which a swash plate is installed. The rotary type includes the vane rotary type, which uses a rotating rotary shaft and vanes. There are scroll types that use orbital scrolls and fixed scrolls.

Such a compressor typically includes a rotating shaft that transmits rotational force to a compression mechanism that compresses the refrigerant, and includes a clutch that selectively connects and disconnects the driving source (e.g., engine) of the compressor and the rotating shaft to transfer power from the driving source. It is configured to be selectively delivered and operated.

Specifically, the compressor includes a casing, a compression mechanism provided inside the casing and compressing the refrigerant, a rotating shaft transmitting rotational force to the compression mechanism from a drive source (for example, an engine) provided outside the casing, and the drive source. It includes a clutch that selectively connects and disconnects the rotation shaft.

The clutch includes a hub that is fastened to a rotating shaft and can rotate with the rotating shaft, a disk that is fastened to the hub and can rotate with the hub, a pulley that rotates by receiving power from a drive source, and fastening the hub and the disk, where the disk is An elastic member that applies an elastic force to the disk in a direction that moves the disk away from the pulley while fastening the hub and the disk so that it can move in a direction closer to or away from the pulley based on the hub, and is magnetized when power is applied to move the disk to the disk. It includes a field coil assembly that moves toward the pulley and brings the disk into contact with the pulley.

Here, the hub, the elastic member, and the disk form a so-called disk hub assembly.

This clutch forms a magnetic field by electromagnetic induction of the wound coil, and the resulting magnetic force attracts the disk hub assembly of the compressor drive shaft to the friction surface of the pulley, thereby connecting the power, thereby transferring the driving force of the pulley rotated by the engine to the compressor. It is transmitted to the disk hub assembly of the drive shaft. In this way, the air conditioning device is controlled by controlling the power to the compressor depending on whether power is applied to the coil.

However, in the conventional clutch and the compressor including it, the friction surface between the pulley and the disk is exposed to the outside, so foreign substances are easily introduced. If introduced foreign matter adheres to the friction surface between the pulley and the disk, the frictional force may decrease when the pulley and the disk come into contact, and if the foreign matter contains moisture, there is a problem in that the friction surface corrodes quickly.

Additionally, there is a problem in that considerable noise is generated when the disk is adsorbed to the pulley.

The present invention is intended to solve the problems of the conventional clutch and the compressor including the same as described above, and provides a clutch that can prevent foreign substances from entering the friction surface between the pulley and the disk and a compressor including the same. The purpose.

Another object of the present invention is to provide a clutch that can reduce noise caused by contact between a disk and a pulley and a compressor including the same.

In order to achieve the above-described object, the present invention includes a hub that is fastened to a rotating shaft of a compressor and can rotate together with the rotating shaft while its position is fixed; a disk fastened to the hub and capable of rotating together with the hub; a pulley that rotates by receiving power from the driving source of the compressor; a field coil assembly that is magnetized when power is applied and contacts or separates the disk and the pulley; and a cover provided to cover one surface of the disk and surround a friction surface between the disk and the pulley.

Additionally, according to an embodiment of the present invention, the cover may include a flat portion that covers one surface of the disk, and a bent portion that extends from an edge of the flat portion and surrounds a contact surface between the disk and the pulley.

Additionally, according to an embodiment of the present invention, the end of the bent portion is spaced apart from the pulley, so that the cover can rotate together with the disk and the hub.

In addition, according to an embodiment of the present invention, it includes a fastening member for coupling the cover to the hub, a through hole is formed in the flat portion, and the fastening member can be coupled to the hub through the through hole. there is.

Additionally, according to an embodiment of the present invention, the through hole is formed at the center of the flat portion, so that the fastening member can be coupled to the center of the hub.

Additionally, according to an embodiment of the present invention, It may include a sound-absorbing material provided on the inside of the cover to reduce noise generated when the disk contacts or is separated from the pulley.

In addition, according to an embodiment of the present invention, an elastic member fastens the hub and the disk so that the disk can move in a direction toward or away from the pulley based on the hub; and a damping member interposed between the elastic member and the disk.

In addition, according to an embodiment of the present invention, a ring assembly is coupled to the hub while being coupled to the disk and transmits the rotational force of the disk to the hub.

In addition, according to an embodiment of the present invention, the ring assembly includes an outer ring coupled to one surface of the disk, an inner ring coupled to an inner peripheral surface of the outer ring, and a rubber inserted between the outer ring and the inner ring. May include absences.

Additionally, according to an embodiment of the present invention, the cover may include a flat portion that covers one surface of the disk and a bent portion that extends from an edge of the flat portion and surrounds the friction surface.

Additionally, according to an embodiment of the present invention, the end of the bent portion is spaced apart from the pulley, so that the cover can rotate together with the disk and the hub.

In addition, according to an embodiment of the present invention, it includes a fastening member for coupling the cover to the hub, a through hole is formed in the flat portion, and the fastening member can be coupled to the hub through the through hole. there is.

Additionally, according to an embodiment of the present invention, a plurality of through holes are formed, a plurality of fastening members are provided, and the through holes and the fastening members may be arranged radially with respect to the center of the cover.

Additionally, according to an embodiment of the present invention, a sound-absorbing material is provided on the inside of the cover to reduce noise generated when the disk contacts or is spaced from the pulley.

Meanwhile, another aspect of the present invention is a casing; A compression mechanism provided inside the casing and compressing the refrigerant; a rotating shaft that transmits rotational force from a drive source provided outside the casing to the compression mechanism; and a power transmission mechanism that selectively connects and disconnects the drive source and the rotation shaft, and the power transmission mechanism provides a compressor provided with a clutch as described above.

According to the present invention, it is possible to prevent foreign substances from entering the friction surface between the pulley and the disk.

As a result, clutch slip due to a decrease in friction can be prevented and friction surface corrosion caused by moisture can be prevented.

Additionally, noise caused by contact between the disk and the pulley can be reduced.

1 is a cross-sectional view showing a compressor including a clutch;
Figure 2 is an exploded perspective view showing a clutch according to a first embodiment of the present invention;
Figure 3 is a perspective view showing a clutch according to the first embodiment of the present invention;
Figure 4 is a cross-sectional view taken along line I-I of Figure 3;
Figure 5 is an exploded perspective view showing a clutch according to a second embodiment of the present invention;
Figure 6 is a perspective view showing a clutch according to a second embodiment of the present invention;
Figure 7 is a cross-sectional view taken along line II-II of Figure 6.

Hereinafter, a clutch and a compressor including the same according to an embodiment of the present invention will be described with reference to the attached drawings.

In addition, the terms described below are terms defined in consideration of the functions in the present invention, and may vary depending on the intention or custom of the user or operator, and the examples below do not limit the scope of the present invention, but rather define the scope of the present invention. These are merely examples of the components presented in the claims.

In order to clearly explain the present invention, parts that are not relevant to the description are omitted, and identical or similar components are assigned the same reference numerals throughout the specification. Throughout the specification, when it is said that a part “includes” a certain element, this means that other elements may be additionally included rather than excluding other elements, unless specifically stated to the contrary.

[First Embodiment]

Hereinafter, the first embodiment of the present invention will be described in detail with reference to FIGS. 1 to 4.

Referring to FIG. 1, the compressor according to the first embodiment of the present invention includes a casing 10, a compression mechanism 20 provided inside the casing 10 and compressing the refrigerant, and an outside of the casing 10. A rotating shaft 30 that transmits rotational force from a driving source (not shown) (e.g., an engine) provided to the compression mechanism 20, and selectively connecting and disconnecting the driving source (not shown) and the rotating shaft 30. Includes power transmission mechanism.

The compression mechanism 20 includes a piston 21 that is capable of reciprocating movement within the bore of the casing 10, is fastened to the rotation shaft 30, and rotates together with the rotation shaft 30, and the piston 21 It may include a swash plate 22 that reciprocates. Here, in the present embodiment, the compression mechanism 20 is formed in a swash plate type including the piston 21 and the swash plate 22, but is comprised of a rotating scroll that receives the rotational force of the rotating shaft 30 and rotates. It can be formed in various ways, such as a scroll method including a fixed scroll engaged with an orbiting scroll.

The rotation shaft 30 has one end connected to the compression mechanism 20, the other end penetrates the casing 10 and protrudes out of the casing 10, and is a disk hub assembly to be described later of the power transmission mechanism. It can be concluded with (70).

The power transmission mechanism is magnetized when power is applied to connect the drive source (not shown) and the rotation shaft 30, and when power is cut off, it is demagnetized to separate the drive source (not shown) and the rotation shaft 30 (clutch) 40).

Referring to the attached FIGS. 2 to 4, the clutch 40 is engaged with a pulley 50 that is rotated by receiving power from the drive source (not shown) and the rotation shaft 30, and is connected to the pulley 50 and the rotation shaft 30. A disk hub assembly 70 that is selectively contacted and spaced apart, a field coil assembly 60 that is magnetized when power is applied and contacts the pulley 50 and the disk hub assembly 70, and covers one surface of the disk 74. A cover 90 is provided to surround the friction surface between the disk 74 and the pulley 50, and is provided on the inside of the cover 90 so that the disk 74 is in contact with or separated from the pulley 50. It includes a sound-absorbing material (80) that reduces noise generated when.

The pulley 50 is formed in a substantially annular shape, and a drive belt (not shown) that transmits driving force from the drive source (not shown) to the pulley 50 is coupled to the outer peripheral surface of the pulley 50 ( 51) is formed, and a bearing 53 that rotatably supports the pulley 50 may be provided between the inner peripheral surface of the pulley 50 and the outer surface of the casing 10.

A friction surface or friction pad 54 capable of contacting a later-described disk 74 of the disk hub assembly 70 is disposed on one side of the pulley 50, and the field coil is disposed on the other side of the pulley 50. A field coil assembly receiving groove 52 into which the assembly 60 is inserted and mounted is formed.

The disk hub assembly 70 includes a hub 72 that is fastened to the rotating shaft 30 and can rotate with the rotating shaft 30 in a fixed position, and is fastened to the hub 72 to form the hub 72. A disk 74 that can rotate together and selectively contacts and is spaced apart from the pulley 50, an elastic member 76 that fastens the hub 72 and the disk 74, and the disk 74 and the pulley. (50) includes an attenuating member 78 interposed between the elastic member 76 and the disk 74 to attenuate noise and vibration caused by contact and separation between them.

The rotating shaft 30 may be inserted into the hub 72, and the disk 74 may be formed in an annular shape to accommodate the hub 72.

The elastic member 76 is fastened to the hub 72 on one side by a fastener such as a rivet, and is fastened to the disk 74 by a fastener such as a rivet on the other side, thereby connecting the hub 72 and the disk. Fasten (74).

The elastic member 76 is coupled to the rotation axis 30 and can support the disk 74 so that it can move in a direction closer to or away from the pulley 50 based on the hub 72 whose position is fixed. there is.

The elastic member 76 is attached to the disk 74 to separate the disk 74 and the pulley 50 when the power to the field coil assembly 60 is cut off. ) is formed to apply elastic force in a direction away from the

The damping member 78 is formed of, for example, NBR (acrylonitrilr-butadiene rubber), IIR (Isobutylene-Isoprene rubber), EPDM (ethylene propylene diene monomer rubber), thermoplastic plastic, or thermosetting plastic. The material may be changed appropriately.

The field coil assembly 60 includes a coil housing and a coil accommodated in the coil housing and generating electromagnetic force when power is applied.

The cover 90 entirely covers one surface of the disk hub assembly 70 and also covers the side edge of the disk hub assembly 70.

The cover 90 includes a flat portion 92 that covers one surface of the disk hub assembly 70 and a bent portion 94 that covers a side surface of the disk hub assembly 70.

The flat portion 92 is formed in a disk shape similar to the disk hub assembly 70. The bent portion 94 is bent from the end of the flat portion 92 and extends to surround the friction surface between the disk 74 and the pulley 50.

However, the end of the bent portion 94 extends only to a length that does not contact the pulley 50, so that the cover 90 and the pulley 50 are spaced apart.

The cover 90 is coupled to the disk hub assembly 70 and rotates together with the disk 74 and the hub 72. On the other hand, as described above, since the cover 90 is spaced apart from the pulley 50, the cover 90 does not rotate together with the pulley 50.

A through hole 92a for coupling to the disk hub assembly 70 is formed in the flat portion 92 of the cover 90. The through hole 92a may be formed in the center of the flat portion 92. The fastening member 96 is coupled through the through hole 92a.

The end of the fastening member 96 is inserted into the fastening hole 72a formed at the center of the hub 72. The fastening member 96 may be coupled to the hub 72 or to the rotation shaft 30 inserted into the hub 72. In either case, the cover 90 rotates together with the hub 72.

The cover 90 may serve to protect the disk hub assembly 70 from being exposed to the outside.

In addition, the cover 90 surrounds the friction surface of the disk 74 and the pulley 50, and can prevent foreign substances such as moisture from entering the friction surface.

The sound absorbing material 80 is provided inside the cover 90. For example, the sound-absorbing material 80 may be attached to the inside of the cover 90. The sound-absorbing material 80 has a similar shape to the cover 90 and includes a flat portion 82 and a bent portion 84. Accordingly, the sound absorbing material 80 is located between the cover 90 and the disk hub assembly 70. In addition, like the cover 90, the sound absorbing material 80 also has a through hole 82a formed in the flat portion 82 through which the fastening member 96 passes.

The sound-absorbing material 80 absorbs noise and reduces noise escaping to the outside of the cover 90. When the disk 74 and the pulley 50 come into contact, an adsorption noise is generated due to collision. This adsorption noise is a noise that occurs even during normal operation, but it is desirable to reduce it in terms of NVH performance. In this embodiment, the sound absorption material 80 is attached to the inside of the cover 90 to reduce the absorption sound as much as possible.

The compressor according to this embodiment according to this configuration can be operated as follows.

The pulley 50 may be rotated by receiving driving force from the drive source (not shown).

In this state, when power is applied to the coil, the disk 74 may move toward the pulley 50 and come into contact with the pulley 50 due to an attractive force caused by magnetic induction of the coil. That is, when the disk 74 and the pulley 50 are coupled, the power of the drive source (not shown) moves the pulley 50, the disk 74, the elastic member 76, and the hub 72. It can be transmitted to the rotation shaft 30 through. In addition, the rotating shaft 30 can compress the refrigerant by operating the compression mechanism 20 with the received power.

On the other hand, when the application of power to the coil is stopped, the attractive force due to the magnetic induction of the coil is no longer generated, and the disk 74 moves away from the pulley 50 due to the elastic force of the elastic member 76. It moves to and is spaced apart from the pulley 50. That is, power transmission from the drive source to the rotation shaft 30 is stopped. Then, the operation of the compression mechanism 20 is stopped, and refrigerant compression is stopped.

Here, the clutch according to this embodiment and the compressor including the same include the cover 90 to prevent foreign substances from entering the friction surface between the disk 74 and the pulley 50. As a result, it is possible to prevent slip from occurring due to a decrease in friction between the disk 74 and the pulley 50 due to foreign substances.

In addition, the possibility of corrosion of the disk 74 or the pulley 50 due to moisture flowing into the friction surface between the disk 74 and the pulley 50 can be reduced.

Additionally, since the disk 74 and the hub 72 are not exposed to the outside due to the cover 90, they can be more safely protected from risks such as damage.

In addition, the sound-absorbing material 80 attached to the cover 90 can reduce the noise generated when the disk 74 collides with the pulley 50 due to the attractive force caused by magnetic induction of the coil. . As a result, the quietness of the compressor can be improved and the NVH (Noise, Vibration, Harshness) performance of the vehicle can be improved.

[Second Embodiment]

Hereinafter, the second embodiment of the present invention will be described in detail.

Referring to FIG. 1, the compressor according to the second embodiment of the present invention includes a casing 10, a compression mechanism 20 provided inside the casing 10 and compressing the refrigerant, and an outside of the casing 10. A rotating shaft 30 that transmits rotational force from a driving source (not shown) (e.g., an engine) provided to the compression mechanism 20, and selectively connecting and disconnecting the driving source (not shown) and the rotating shaft 30. Includes power transmission mechanism.

The compression mechanism 20 includes a piston 21 that is capable of reciprocating movement within the bore of the casing 10, is fastened to the rotation shaft 30, and rotates together with the rotation shaft 30, and the piston 21 It may include a swash plate 22 that reciprocates. Here, in the present embodiment, the compression mechanism 20 is formed in a swash plate type including the piston 21 and the swash plate 22, but is comprised of a rotating scroll that receives the rotational force of the rotating shaft 30 and rotates. It can be formed in various ways, such as a scroll method including a fixed scroll engaged with an orbiting scroll.

The rotation shaft 30 has one end connected to the compression mechanism 20, the other end penetrates the casing 10 and protrudes out of the casing 10, and is a disk hub assembly to be described later of the power transmission mechanism. It can be concluded with (100).

The power transmission mechanism is magnetized when power is applied to connect the drive source (not shown) and the rotation shaft 30, and when power is cut off, it is demagnetized to separate the drive source (not shown) and the rotation shaft 30 (clutch) 40).

Referring to the attached FIGS. 5 to 7, the clutch 40 is engaged with a pulley 50 that rotates by receiving power from the drive source (not shown) and the rotation shaft 30, and is connected to the pulley 50 and the rotation shaft 30. A disk hub assembly 100 that is selectively contacted and spaced apart, a field coil assembly 60 that is magnetized when power is applied and contacts the pulley 50 and the disk hub assembly 100, and covers one surface of the disk 104. It includes a cover 110 provided to surround the friction surface between the disk 104 and the pulley 50.

The pulley 50 is formed in a substantially annular shape, and a drive belt (not shown) is provided on the outer peripheral surface of the pulley 50 to transmit driving force from the drive source (not shown) to the pulley 50, and the pulley ( A bearing may be provided between the inner peripheral surface of the casing 50 and the outer surface of the casing 10 to rotatably support the pulley 50.

A friction surface that can be contacted with the later-described disk 104 of the disk hub assembly 100 is formed on one side of the pulley 50, and the field coil assembly 60 is inserted into the other side of the pulley 50. A groove 52 for receiving the field coil assembly is formed.

The disk hub assembly 100 includes a hub 102 that is fastened to the rotating shaft 30 and can rotate with the rotating shaft 30 in a fixed position, and is fastened to the hub 102 to rotate the hub 102. A disk 104 that can rotate together and is selectively in contact with and spaced apart from the pulley 50, is coupled to the hub 102 in a state coupled to the disk 104 and transmits the rotational force of the disk 104 to the hub. and a ring assembly (106) conveying to (102).

The rotating shaft 30 may be inserted into the hub 102, and the disk 104 may be formed in an annular shape to accommodate the hub 102.

The ring assembly 106 is inserted between an outer ring 106a coupled to one surface of the disk 104 and having a hollow disc shape, and an inner ring 106c coupled to the inner peripheral surface of the outer ring. It includes a rubber member (106b).

The outer ring 106a is a hollow disk-shaped metallic member and is coupled to one surface of the disk 104 with a spacer in between. The outer ring 106a may be coupled to the disk 104 by a fastener such as a rivet while being in surface contact with the disk 104. That is, the outer ring 106a is coupled to the disk 104.

The inner ring 106c is inserted into the outer ring 106a and the rubber member 106b, and includes a hollow circular plate surface and a wall extending to one side from the plate surface. The height of the wall portion is formed to correspond to the height of the rubber member 106b. A hole is formed in the plate surface of the inner ring 106c through which a fastener such as a rivet coupled to the hub 102 passes. That is, the inner ring 106c is coupled to the hub 102.

The rubber member 106b is made of a ring-shaped rubber material with a thickness and is inserted between the outer ring 106a and the inner ring 106c. The rubber member 106b is bonded between the outer ring 106a and the inner ring 106c to connect and fix them, and absorbs shock applied to the disk 104. The rubber member 106b is provided to absorb shock and provide a buffering effect.

The field coil assembly 60 includes a coil housing and a coil that is accommodated in the coil housing and generates electromagnetic force when power is applied.

The cover 110 entirely covers one surface of the disk hub assembly 100 and also covers the side edge of the disk hub assembly 100.

The cover 110 includes a flat portion 112 that covers one side of the disk hub assembly 100 and a bent portion 114 that covers a side surface of the disk hub assembly 100.

The flat portion 112 is formed in a disk shape similar to the disk hub assembly 100. The bent portion 114 is bent from the end of the flat portion 112 and extends to surround the friction surface between the disk 104 and the pulley 50.

However, the end of the bent portion 114 extends only to a length that does not contact the pulley 50, so that the cover 110 and the pulley 50 are spaced apart.

The cover 110 is coupled to the disk hub assembly 100 and rotates together with the disk 104 and the hub 102. On the other hand, as described above, since the cover 110 is spaced apart from the pulley 50, the cover 110 does not rotate together with the pulley 50.

A through hole 112a for coupling to the disk hub assembly 100 is formed in the flat portion 112 of the cover 110. The through holes 112a may be formed in plural. The through hole 112a may be formed radially with respect to the center of the flat portion 112. The fastening member 116 is coupled through the through hole 112a.

The end of the fastening member 116 is inserted and coupled into the fastening hole 102a formed in the inner ring 106c and the hub 102. That is, as shown in FIG. 6, the fastening hole 102a is formed at a location where the inner ring 106c and the hub 102 are coupled. A plurality of fastening holes 102a are formed radially from the center of the inner ring 106c and the hub 102. The cover 110 rotates together with the hub 102 by the fastening member 116.

The cover 110 may serve to protect the disk hub assembly 100 from being exposed to the outside.

In addition, the cover 110 surrounds the friction surface or friction pad 54 of the disk 104 and the pulley 50, and can prevent foreign substances such as moisture from entering the friction surface.

Although not shown, in this embodiment, like the first embodiment, a sound absorbing material may be further provided inside the cover 110. Accordingly, the sound absorbing material is located between the cover 110 and the disk hub assembly 100.

The sound-absorbing material absorbs noise and reduces noise escaping to the outside of the cover 110. When the disk 104 and the pulley 50 come into contact, an adsorption noise is generated due to collision. This adsorption noise is a noise that occurs even during normal operation, but it is desirable to reduce it in terms of NVH performance. In this embodiment, the sound absorption material can be attached to the inside of the cover 110 to reduce the absorption sound as much as possible.

The compressor according to this embodiment according to this configuration can be operated as follows.

The pulley 50 may be rotated by receiving driving force from the drive source (not shown).

In this state, when power is applied to the coil, the disk 104 may move toward the pulley 50 and come into contact with the pulley 50 due to an attractive force caused by magnetic induction of the coil. That is, when the disk 104 and the pulley 50 are coupled, the power of the drive source (not shown) moves the pulley 50, the disk 104, the ring assembly 106, and the hub 102. It can be transmitted to the rotation shaft 30 through. In addition, the rotating shaft 30 can compress the refrigerant by operating the compression mechanism 20 with the received power.

On the other hand, when the application of power to the coil is stopped, the attractive force due to the magnetic induction of the coil is no longer generated, and the disk 104 moves away from the pulley 50 by the restoring force of the ring assembly 106. It moves to and is spaced apart from the pulley 50. That is, power transmission from the drive source to the rotation shaft 30 is stopped. Then, the operation of the compression mechanism 20 is stopped, and refrigerant compression is stopped.

Here, the clutch according to this embodiment and the compressor including the same include the cover 110 to prevent foreign substances from entering the friction surface between the disk 104 and the pulley 50. As a result, it is possible to prevent slip from occurring due to a decrease in friction between the disk 104 and the pulley 50 due to foreign substances.

In addition, the possibility of corrosion of the disk 104 or the pulley 50 due to moisture flowing into the friction surface between the disk 104 and the pulley 50 can be reduced.

Additionally, since the disk 104 and the hub 102 are not exposed to the outside due to the cover 110, they can be more safely protected from risks such as damage.

In addition, the sound-absorbing material attached to the cover 110 can reduce noise generated when the disk 104 collides with the pulley 50 due to an attractive force caused by magnetic induction of the coil. As a result, the quietness of the compressor can be improved and the NVH performance of the vehicle can be improved.

1: Casing 2: Compression mechanism
21: Piston 22: Swash plate
3: Rotating shaft 4: Clutch
5: Pulley 6: Field coil assembly
7: Disk hub assembly 72: Hub
72a: fastening hole 74: disk
76: elastic member 78: damping member
8: sound absorbing material 82: flat part
82a: through hole 84: bent portion
9: Cover 92: Flat part
92a: Through hole 94: Bend portion
96: Fastening member 10: Disk hub assembly
102: hub 102a: fastening hole
104: disk 106: ring assembly
1062: Outer ring 1063: Rubber member
1064: Inner ring 11: Cover
112: Plane portion 112a: Through hole
114: bent portion 116: fastening member

Claims (15)

A hub that is fastened to the rotating shaft of the compressor and can rotate with the rotating shaft while its position is fixed;
a disk fastened to the hub and capable of rotating together with the hub;
a pulley that rotates by receiving power from the driving source of the compressor;
a field coil assembly that is magnetized when power is applied and contacts or separates the disk and the pulley; and
A clutch including a cover provided to cover one surface of the disk and surround a friction surface between the disk and the pulley.
According to paragraph 1,
The cover includes a flat portion that covers one surface of the disk, and a bent portion that extends from an edge of the flat portion and surrounds a contact surface between the disk and the pulley.
According to paragraph 2,
A clutch in which an end of the bent portion is spaced apart from the pulley and the cover rotates together with the disk and the hub.
According to paragraph 2,
Includes a fastening member that couples the cover to the hub,
A clutch in which a through hole is formed in the flat portion, and the fastening member passes through the through hole and is coupled to the hub.
According to paragraph 4,
The through hole is formed at the center of the flat portion, so that the fastening member is coupled to the center of the hub.
According to paragraph 1,
A clutch including a sound-absorbing material provided on the inside of the cover to reduce noise generated when the disk contacts or is separated from the pulley.
According to paragraph 1,
an elastic member that couples the hub and the disk so that the disk can move in a direction toward or away from the pulley based on the hub; and
A clutch further comprising a damping member interposed between the elastic member and the disk.
According to paragraph 1,
A clutch further comprising a ring assembly that is coupled to the hub while being coupled to the disk and transmits the rotational force of the disk to the hub.
According to clause 8,
The ring assembly includes an outer ring coupled to one surface of the disk, an inner ring coupled to an inner peripheral surface of the outer ring, and a rubber member inserted between the outer ring and the inner ring.
According to clause 8,
The cover includes a flat portion that covers one surface of the disk, and a bent portion that extends from an edge of the flat portion and surrounds the friction surface.
According to clause 10,
A clutch in which an end of the bent portion is spaced apart from the pulley and the cover rotates together with the disk and the hub.
According to clause 10,
Includes a fastening member that couples the cover to the hub,
A clutch in which a through hole is formed in the flat portion, and the fastening member passes through the through hole and is coupled to the hub.
According to clause 12,
The through holes are formed in plural, and the fastening members are provided in plural,
A clutch in which the through hole and the fastening member are arranged radially with respect to the center of the cover.
According to clause 8,
A clutch wherein a sound absorbing material is provided on the inside of the cover to reduce noise generated when the disc contacts or is separated from the pulley.
casing;
A compression mechanism provided inside the casing and compressing the refrigerant;
a rotating shaft that transmits rotational force from a drive source provided outside the casing to the compression mechanism; and
It includes a power transmission mechanism that selectively connects and disconnects the drive source and the rotation shaft,
The compressor wherein the power transmission mechanism is a clutch according to any one of claims 1 to 14.