KR20230060326A - Clutch and compressor including the same - Google Patents

Abstract

The present invention relates to a clutch and a compressor including the same. The clutch includes: a pulley rotated through the transmission of power; a disc coming in contact with and spaced apart from the pulley; a hub capable of being rotated together with a rotary shaft of the compressor; and an elastic member coupling the hub and the disc such that the disc can move toward or away from the pulley with respect to the hub. The disc includes an annular first disc and an annular second disc housed in the first disc. The elastic member includes a first annular part coupled to the first disc, a second annular part housed in the first annular part and coupled to the second disc, a bridge part connecting the first annular part with the second annular part, and a center part extended from the second annular part and coupled to the hub. Therefore, as the second disc is formed to be spaced apart from the first disc all around on a circumferential direction, a shock caused by contact between the disc and the pulley can be prevented from being transmitted to the compressor when the elastic member is made of a metallic material.

Description

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

The present invention relates to a clutch and a compressor including the same, and more particularly, to a clutch that is magnetized and demagnetized and capable of selectively connecting and separating a driving source and a rotational shaft, and a compressor including the same. will be.

In general, an air conditioning unit (A/C) for cooling and heating the interior of a vehicle is installed. The air conditioner is a component of a cooling system, and includes a compressor that compresses the low-temperature, low-pressure gaseous refrigerant introduced from the evaporator into a high-temperature, high-pressure gaseous refrigerant and sends it to a condenser.

The compressor includes a reciprocating type that compresses refrigerant through a reciprocating motion of a piston and a rotary type that compresses refrigerant while rotating. The reciprocating type includes a crank type that transmits power to a plurality of pistons using a crank according to a power transmission method, a swash plate type that transmits power to a rotation shaft on which a swash plate is installed, and the rotary type uses a rotating rotary shaft and vanes. There is a vane rotary type that uses a rotating scroll and a scroll type that uses a fixed scroll.

Such a compressor typically includes a rotational shaft that transmits rotational force to a compression mechanism that compresses refrigerant, and includes a clutch that selectively connects and disconnects a driving source (eg, an engine) and a rotational shaft of the compressor, so as to obtain power from the driving source. It is configured to be selectively received and operated.

1 is a cross-sectional view showing a compressor including a clutch.

2 is a plan view showing a conventional clutch, and FIG. 3 is an exploded perspective view showing a disk hub assembly in the clutch of FIG. 2 .

1 to 3, the conventional compressor has a casing 1, a compression mechanism 2 provided inside the casing 1 and compressing a refrigerant, provided outside the casing 1 A rotational shaft 3 for transmitting rotational force from a driving source (not shown) (eg, an engine) to the compression mechanism 2 and a power transmission mechanism 4 for selectively connecting and separating the driving source and the rotational shaft 3 Including the in-clutch.

The clutch includes a hub 62 rotatable with the rotating shaft 3, a disk 66' rotatable with the hub 62, a pulley 5 rotated by receiving power from the driving source, and the disk 66 ') fastens the hub 62 and the disk 66' to be movable in a direction closer to or away from the pulley 5 based on the hub 62, so that the disk 66' is the pulley ( 5) an elastic member 64 that applies an elastic force to the disk 66' in a direction away from the disk 66', which is magnetized when power is applied and moves the disk 66' toward the pulley 5 so that the disk 66' and the A field coil assembly 7 contacting the pulley 5 and a damping member 68' interposed between the elastic member 64 and the disk 66'.

Here, the hub 62, the elastic member 64, the disk 66' and the damping member 68' form a so-called disk hub assembly 6'.

And, the compressor according to this configuration operates as follows.

That is, the pulley 5 is rotated by receiving a driving force from the driving source.

In this state, when power is applied to the field coil assembly 7, the disk 66' is moved toward the pulley 5 by the suction force caused by the magnetic induction of the field coil assembly 7, and the pulley ( 5) is contacted. That is, when the disk 66' and the pulley 5 are coupled, the power of the driving source passes through the pulley 5, the disk 66', the elastic member 64, and the hub 62. It is transmitted to the rotating shaft (3). And, the rotary shaft 3 operates the compression mechanism 2 with the received power to compress the refrigerant.

On the other hand, when the power supply to the field coil assembly 7 is stopped, the magnetic induction force of the field coil assembly 7 is no longer generated, and the disk 66' is moved by the elastic member 64. is moved in a direction away from the pulley 5 to be spaced apart from the pulley 5. That is, transmission of power from the driving source to the rotating shaft 3 is stopped. And, the operation of the compression mechanism 2 is stopped, and the refrigerant compression is stopped.

In this process, the damping member 68' attenuates noise and vibration caused by contact and separation between the pulley 5 and the disk 66'.

However, in such a conventional clutch and a compressor including the same, as the elastic member 64 is formed of a metal material, when the disk 66' contacts the pulley 5, an impact is generated even though the damping member Although partially attenuated by (68'), there is still a problem of transmission to the compressor side through the elastic member (64).

Republic of Korea Patent Publication No. 10-2019-0001904

Accordingly, an object of the present invention is to provide a clutch capable of suppressing transmission of shock due to contact between a disk and a pulley to the compressor when an elastic member of a disk hub assembly is formed of a metal material, and a compressor including the same. .

The present invention, in order to achieve the object as described above, a pulley that is rotated by receiving power; a disk contacting and spaced apart from the pulley; a hub rotatable with the compressor shaft; and an elastic member fastening the hub and the disk so that the disk moves toward or away from the pulley based on the hub, wherein the disk is accommodated in an annular first disk and the first disk. The elastic member includes a first annular portion fastened with the first disk, a second annular portion received in the first annular portion and fastened with the second disk, and the first annular portion fastened with the first disk. The second disk is spaced apart from the first disk as a whole in the circumferential direction, including a bridge portion connecting the portion and the second annular portion and a central portion extending from the second annular portion and fastened to the hub. provide a clutch.

The first disk and the first annular portion may be fastened by a first fastening member, and the second disk and the second annular portion may be fastened by a second fastening member.

The first disk may include a first disk fastening hole into which the first fastening member is inserted, and the first annular part may include a first annular part fastening hole into which the first fastening member is inserted.

The second disk may include a second disk fastening hole into which the second fastening member is inserted, and the second annular part may include a second annular part fastening hole into which the second fastening member is inserted.

a first damping member contacting the elastic member and the disk during a separation period between the disk and the pulley, and spaced apart from one of the elastic member and the disk and contacting the other during a contact period between the disk and the pulley; and a second damping member contacting the disk and the elastic member during a contact period and a separation period between the disk and the pulley.

The second damping member may be interposed between the second disk and the second annular portion and may be coupled to the second disk and the second annular portion by the second fastening member.

The second damping member may include a second damping member fastening hole into which the second fastening member is inserted.

The first annular portion and the second annular portion may have different spring constants.

At least one of a length in a circumferential direction and a width in a radial direction may be formed to be different from the first annular portion and the second annular portion.

And, the present invention is a casing; a compression mechanism for compressing the refrigerant inside the casing; a rotational shaft transmitting rotational force from a drive source provided outside the casing to the compressor; and a power transmission mechanism that selectively connects and divides the driving source and the rotating shaft, wherein the power transmission mechanism is formed of the clutch.

A clutch according to the present invention and a compressor including the pulley rotated by receiving power; a disk contacting and spaced apart from the pulley; a hub rotatable with the compressor shaft; and an elastic member fastening the hub and the disk so that the disk moves toward or away from the pulley based on the hub, wherein the disk is accommodated in an annular first disk and the first disk. The elastic member includes a first annular portion fastened with the first disk, a second annular portion received in the first annular portion and fastened with the second disk, and the first annular portion fastened with the first disk. As the second disk is formed spaced apart from the first disk as a whole in the circumferential direction, including a bridge portion connecting the second annular portion and a central portion extending from the second annular portion and fastened to the hub, When the elastic member is formed of a metal material, it is possible to suppress the transfer of impact due to contact between the disk and the pulley to the compressor.

1 is a cross-sectional view showing a compressor including a clutch;
2 is a plan view showing a conventional clutch;
3 is an exploded perspective view showing a disc hub assembly in the clutch of FIG. 2;
4 is a plan view showing a clutch according to an embodiment of the present invention;
5 is a rear view showing a disc hub assembly in the clutch of FIG. 4;
6 is an exploded perspective view showing a disk hub assembly in the clutch of FIG. 4;
7 is a cross-sectional view taken along line I-I of FIG. 4;
8 is an enlarged view of part A of FIG. 7 in a state in which the disk and the pulley are spaced apart;
9 is an enlarged view of part B of FIG. 7 in a state in which the disk and the pulley are spaced apart;
10 is an enlarged view of part A of FIG. 7 in a state in which the disk and the pulley are in contact;
11 is an enlarged view of part B of FIG. 7 in a state in which the disk and the pulley are in contact;
FIG. 12 is a cross-sectional view schematically illustrating the behavior of a disk when transitioning from the state of FIGS. 8 and 9 to the state of FIGS. 10 and 11 .

Hereinafter, a clutch according to the present invention and a compressor including the same will be described in detail with reference to the accompanying drawings.

4 is a plan view showing a clutch according to an embodiment of the present invention, FIG. 5 is a rear view showing a disk hub assembly in the clutch of FIG. 4, and FIG. 6 is a disk hub assembly in the clutch of FIG. 4 Figure 7 is an exploded perspective view, Figure 7 is a cross-sectional view along line I-I of Figure 4, Figure 8 is an enlarged view of part A of Figure 7 in a state in which the disk and pulley are spaced apart, Figure 9 is Figure 7 in a state in which the disk and pulley are spaced apart 10 is an enlarged view of part A of FIG. 7 in a state in which the disk and pulley are in contact, and FIG. 11 is an enlarged view of part B in FIG. 7 in a state in which the disk and the pulley are in contact, and FIG. This is a cross-sectional view schematically illustrating the behavior of the disk when it is converted from the states of FIGS. 8 and 9 to the states of FIGS. 10 and 11 .

Meanwhile, components not shown in FIGS. 4 to 12 are referred to FIG. 1 for convenience of description.

4 to 12 and 1, a compressor according to an embodiment of the present invention includes a casing 1, a compression mechanism 2 provided inside the casing 1 and compressing a refrigerant, A rotating shaft 3 that transmits rotational force from a driving source (not shown) (eg, an engine) provided outside the casing 1 to the compression mechanism 2, and the driving source (not shown) and the rotating shaft 3 ) It may include a power transmission mechanism 4 for selectively connecting and separating.

The compression mechanism 2 is fastened to the piston 21 provided to be reciprocating inside the bore of the casing 1 and the rotating shaft 3 to rotate together with the rotating shaft 3, and the piston 21 It may include a swash plate 22 for reciprocating. Here, the compression mechanism 2 is formed in a swash plate method including the piston 21 and the swash plate 22 in the case of the present embodiment, but a turning scroll that is rotated by receiving the rotational force of the rotation shaft 3 It may be formed in various ways, such as a scroll method including a fixed scroll engaged with the orbiting scroll.

The rotating shaft 3 has one end connected to the compression mechanism 2 and the other end penetrating the casing 1 and protruding out of the casing 1, which will be described later in the power transmission mechanism 4. It can be fastened with the disk hub assembly (6).

The power transmission mechanism 4 is magnetized when power is applied to connect the driving source (not shown) and the rotating shaft 3, and is demagnetized when power is cut off to separate the driving source (not shown) and the rotating shaft 3. It may be formed as an electromagnetic clutch (hereinafter referred to as clutch).

The clutch includes a pulley 5 that rotates by receiving power from the drive source (not shown), a disk hub assembly 6 that is engaged with the rotation shaft 3 and selectively contacts and separates from the pulley 5, and a power source. It may include a field coil assembly 7 that is magnetized when applied and contacts the pulley 5 and the disk hub assembly 6 .

The pulley 5 is formed in a substantially annular shape, and a drive belt (not shown) for transmitting a driving force from the drive source (not shown) to the pulley 5 is formed on the outer circumferential surface of the pulley 5. is wound up, and a bearing for rotatably supporting the pulley 5 may be interposed between the inner circumferential surface of the pulley 5 and the outer surface of the casing 1 .

In addition, a friction surface capable of contacting a disk 66 to be described later of the disk hub assembly 6 is formed on one side of the pulley 5, and the field coil assembly 7 is formed on the other side of the pulley 5. A field coil assembly accommodating groove into which is inserted may be formed.

The disk hub assembly 6 is fastened to the rotary shaft 3 and is rotatable with the rotary shaft 3 in a state in which the position is fixed. The hub 62 is rotatable with the hub 62 and the pulley ( 5) a disk 66 selectively in contact with and spaced apart, an elastic member 64 fastening the hub 62 and the disk 66, and interposed between the elastic member 64 and the disk 66 A damping member 68 may be included.

The hub 62 may include a boss portion 622 into which the rotary shaft 3 is inserted and a flange portion 624 extending from the boss portion 622 .

A hub fastening hole 624a into which a third fastening member 63 to be described later is inserted is formed in the flange portion 624, the hub fastening hole 624a is formed in three, and the three hub fastening holes 624a are formed. ) may be arranged at equal intervals along the direction of rotation.

Here, not only the hub fastening hole 624a, but also a first disk fastening hole 662a, a second disk fastening hole 664a, a first fastening part P11, a second fastening part P21, and a third fastening hole 662a, which will be described later. Part P31, bridge part 646, first annular part fastening hole 642a, second annular part fastening hole 644a, central fastening hole 648a, first damping member 682, second damping member 684, the first fastening member 67, the second fastening member 65, and the third fastening member 63 are each formed three by one, but the number may be appropriately adjusted.

The disk 66 includes an annular first disk 662 extending in the rotational direction and an annular second disk 664 extending in the rotational direction and accommodated in the first disk 662 and accommodating the hub 62. ) may be included.

The first disk 662 is formed with a first disk fastening hole 662a into which a first fastening member 67, which will be described later, is inserted, and three first disk fastening holes 662a are formed. The first disk fastening holes 662a may be arranged at regular intervals along the rotation direction.

A second disk fastening hole 664a into which a second fastening member 65 to be described later is inserted is formed in the second disk 664, and three second disk fastening holes 664a are formed. The second disk fastening holes 664a may be arranged at equal intervals along the rotation direction.

Here, the first disk 662 and the second disk 664 are formed separately from each other, and between the first disk 662 and the second disk 664 there is an annular shape continuously extending along the rotational direction. A gap 666 of may be formed. That is, the second disk 664 may be entirely spaced apart from the first disk 662 in the circumferential direction.

Also, the three first disk fastening holes 662a and the three second disk fastening holes 664a are overlapped with each other in the rotation radial direction, which will be described later.

The elastic member 64 is formed of, for example, a metal material, and is fastened to the first disk 662 by a first fastening member 67 such as a rivet at a first side, and at a second side It is fastened to the second disk 664 by a second fastening member 65, for example a rivet, and on the third side by a third fastening member 63, for example a rivet, the hub 62 By being fastened with, the first disk 662, the second disk 664 and the hub 62 may be formed to fasten.

Further, the elastic member 64 is formed to support the first disk 662 and the second disk 664 movably toward or away from the pulley 5 based on the hub 62. It can be.

And, the elastic member 64 is attached to the first disk 662 and the second disk 664 in a direction in which the first disk 662 and the second disk 664 move away from the pulley 5. When power is cut off to the field coil assembly 7 by applying an elastic force, the first disk 662 and the second disk 664 may be separated from the pulley 5 .

Specifically, the elastic member 64 is formed in an annular shape extending in a rotational direction and a first annular portion 642 coupled to the first disk 662, extending in a rotational direction and the first annular portion 642 A second annular portion 644 accommodated in and fastened to the second disk 664, extending outward in the rotational radial direction from the second annular portion 644 to the first annular portion 642, and extending from the first annular portion 644 to the outside A bridge portion 646 connecting the annular portion 642 and the second annular portion 644 extends inward in the rotational radial direction from the second annular portion 644 to a position opposite to the hub 62, and It may include a central portion 648 engaged with the hub 62 .

The first annular portion 642 may be formed to face the first disk 662 .

In addition, a first annular part fastening hole 642a into which the first fastening member 67 is inserted is formed in the first annular part 642, and the first annular part fastening hole 642a is formed in the first annular part fastening hole 642a. It is formed in three to face the fastening hole 662a, and the three first annular part fastening holes 642a may be arranged at equal intervals along the rotation direction.

The second annular portion 644 may be formed to face the second disk 664 .

In addition, a second annular part fastening hole 644a into which the second fastening member 65 is inserted is formed in the second annular part 644, and the second annular part fastening hole 644a is formed in the second annular part fastening hole 644a. Three fastening holes 664a are formed opposite to each other, and the three second annular part fastening holes 644a may be arranged at equal intervals along the rotational direction.

The central portion 648 may be formed to cover at least a portion of a separation space between the hub 62 and the second disk 664 . That is, the outer diameter of the central part 648 is formed to be larger than the outer diameter of the hub 62, and at least a part of the separation space between the hub 62 and the second disk 664 is within the range of the central part 648. can be formed

In addition, a central fastening hole 648a into which the third fastening member 63 is inserted is formed in the central part 648, and three central fastening holes 648a are formed to face the hub fastening hole 624a. And, the three central fastening holes 648a may be arranged at equal intervals along the rotation direction.

At this time, in the elastic member 64, a portion where the first annular portion fastening hole 642a is formed and fastened to the first disk 662 is referred to as a first fastening portion P11, and the second annular portion The part where the fastening hole 644a is formed and fastened to the second disk 664 is called the second fastening part P21, and the part where the central fastening hole 648a is formed and fastened to the hub 62 is called the second fastening part P21. Referring to the third fastening part P31, the first fastening part P11, the second fastening part P21, and the third fastening part P31 are each formed in three pieces, and the three first fastening parts are three. (P11) and the three second fastening parts P21 are overlapped with each other in the rotational radial direction, and the three third fastening parts P31 are formed to overlap the three first fastening parts P11 and the three fastening parts P21. It may be formed so as not to overlap with the second fastening part P21 in the rotational radial direction.

That is, the three first fastening parts P11, the three second fastening parts P21, and the three third fastening parts P31 may be arranged at equal intervals along the rotation direction. In addition, an arbitrary first fastening part P11 among the three first fastening parts P11 overlaps one second fastening part P21 among the three second fastening parts P21 in the rotational radial direction. can And, a region between an arbitrary first fastening part P11 among the three first fastening parts P11 and a first fastening part P11 adjacent to the arbitrary first fastening part P11 (hereinafter referred to as a first intermediate part P11). Part) (P12) is a region between an arbitrary second fastening part (P21) of the three second fastening parts (P21) and a second fastening part (P21) adjacent to the arbitrary second fastening part (P21) (hereinafter , the second intermediate portion) (P22) and the rotation radial direction may overlap. In addition, an arbitrary first intermediate portion P12 among the three first intermediate portions P12 and a second intermediate portion P22 overlapping with the second intermediate portion P22 in the rotational radial direction are one of the three third fastening portions P31. It may overlap with the third fastening part P31 of the rotational radial direction. And, a region between an arbitrary third fastening part P31 among the three third fastening parts P31 and a third fastening part P31 adjacent to the third fastening part P31 (hereinafter referred to as a third middle part). Part) (P32) is one of the three first fastening parts (P11) and one of the three second fastening parts (P21) and the rotation radius directions can be overlapped.

Here, the first intermediate portion P12 refers to an intermediate portion of two first fastening portions P11 adjacent to each other in the circumferential direction of the first annular portion 642, and the second intermediate portion P22 is It refers to an intermediate portion of two second fastening portions P21 adjacent to each other in the circumferential direction of the second annular portion 644, and the third intermediate portion P32 is adjacent to two second fastening portions P21 adjacent to each other in the circumferential direction of the central portion 648. 3 Means the middle part of the fastening part (P31).

The bridge part 646 is formed in three pieces, and an arbitrary bridge part 646 among the three bridge parts 646 is a first middle part P12 of one of the three first middle parts P12 and It may be formed to overlap with one of the three second intermediate parts P22 in the rotational radial direction. That is, each bridge part 646 may extend from each first intermediate part P12 to each second intermediate part P22 in the rotational radial direction. In this case, each bridge part 646 may overlap each third fastening part P31 in a rotational radial direction.

The damping member 68 is provided with the elastic member 64 and the elastic member 64 during a period in which power is cut off to the field coil assembly 7 and the disk 66 and the pulley 5 are separated (hereinafter referred to as a separation period). The elastic member 64 and the disk are in contact with the disk 66, but during a period in which power is applied to the field coil assembly 7 and the disk 66 and the pulley 5 are in contact (hereinafter referred to as a contact period). (66) may include a first damping member 682 spaced apart from one (disk 66 in this embodiment) and in contact with the other (elastic member 64 in this embodiment).

The first damping member 682 is coupled to the first intermediate portion P12 and the bridge portion 646, and between the first intermediate portion P12 and the first disk 662 and the bridge portion ( 646) and the second disk 664, and may include a damping portion capable of contacting the first disk 662 and the second disk 664.

Also, the first damping member 682 may be formed such that the damping part contacts the first disk 662 and the second disk 664 during the separation period. That is, in the first damping member 682, the damping part is between the first middle part P12 and the first disk 662 and between the bridge part 646 and the second disk 664 during the separation period. It can be formed to be compressed between them.

That is, in a state in which the first damping member 682 is detached from between the first intermediate portion P12 and the first disk 662 and between the bridge portion 646 and the second disk 664, the The thickness of the damping part is referred to as a first dimension, and the first damping member 682 is between the first middle part P12 and the first disk 662 and between the bridge part 646 and the second disk 664 ) and the distance between the first intermediate portion P12 and the first disk 662 in a state in which the first disk 662 and the second disk 664 are spaced apart from the pulley 5, and A distance between the bridge part 646 and the second disk 664 is referred to as a second dimension, and the first damping member 682 is between the first middle part P12 and the first disk 662 and It is separated from between the bridge part 646 and the second disk 664, and the first intermediate part (with the first disk 662 and the second disk 664 in contact with the pulley 5) P12) and the distance between the first disk 662 and the distance between the bridge part 646 and the second disk 664 are referred to as a third dimension, the first dimension is greater than the second dimension, and the third dimension is larger than the second dimension. It can be formed smaller than the dimensions.

Here, in the case of the present embodiment, the first damping member 682 is between the first intermediate portion P12 and the first disk 662 and between the bridge portion 646 and the second disk 664. All of them are interposed, but are not limited thereto. That is, for example, the first damping member 682 may be formed to be interposed only between the first intermediate portion P12 and the first disk 662 .

Meanwhile, the damping member 68 may further include a second damping member 684 contacting the elastic member 64 and the disk 66 during the contact period as well as the separation period.

The second damping member 684 is formed to be interposed between the second annular portion 644 and the second disk 664, and the second annular portion 644 is formed by the second fastening member 65. and fastening a second damping member into which the second fastening member 65 is inserted and communicates with the second annular part fastening hole 644a and the second disk fastening hole 664a so as to fasten with the second disk 664. A hole 684a may be included.

Here, the second damping member 684 is always fastened to the second annular portion 644 and the second disk 664 by the second fastening member 65 (during the separation period and the contact period). It may be compressed between the second annular portion 644 and the second disk 664 . That is, the second damping member 684 may always contact the second annular portion 644 and the second disk 664 .

The field coil assembly 7 may include a coil housing and a coil accommodated in the coil housing and generating electromagnetic force when power is applied.

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

That is, the pulley 5 may be rotated by receiving a driving force from the driving source (not shown).

In this state, when power is applied to the coil, the disk 66 may be moved toward the pulley 5 by a suction force due to magnetic induction of the coil, and may come into contact with the pulley 5 . That is, when the disk 66 and the pulley 5 are coupled, the power of the driving source (not shown) is applied to the pulley 5, the disk 66, the elastic member 64 and the hub 62. It can be transmitted to the rotating shaft (3) through. Also, the rotating shaft 3 may compress the refrigerant by operating the compression mechanism 2 with the received power.

On the other hand, when the supply 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 66 moves away from the pulley 5 due to the elastic force of the elastic member 64. It can be moved to be spaced apart from the pulley (5). That is, transmission of power from the driving source (not shown) to the rotating shaft 3 may be stopped. Also, the operation of the compression mechanism 2 may be stopped, and compression of the refrigerant may be stopped.

Here, the clutch according to the present embodiment and the compressor including the same include the elastic member 64 and the damping member 68, so noise and separation caused by contact and separation between the disk 66 and the pulley 5 vibration can be reduced.

Specifically, the clutch and the compressor including the same according to the present embodiment further includes the first damping member 682, so that power is applied to the field coil assembly 7 and the disk 66 and the pulley ( 5) reduces noise and vibration caused by collision between the disk 66 and the pulley 5 at the point of contact (hereinafter, the point of contact), and power applied to the field coil assembly 7 is cut off, Noise and vibration caused by collision between the elastic member 64 and the disk 66 can be reduced when the disk 66 is separated from the pulley 5 (hereinafter referred to as the separation time).

That is, while the first damping member 682 contacts the elastic member 64 and the disk 66 during the separation period, the elastic member 64 A contact surface between the disc 66 and a contact surface between the elastic member 64 and the hub 62 may be disposed on different planes. At this time, the first damping member 682 is formed in the first intermediate portion P12 and the bridge portion 646 among the elastic members 64, so that the elastic member 64 and the elastic member 64 and the The contact surface between the disks 66 may be spaced from the same position as the contact surface between the elastic member 64 and the hub 62 toward the pulley 5 side. That is, the first damping member 682 may apply initial bending deformation to the elastic member 64 during the separation period. The first damping member 682 is an elastic force applied to the disk 66 by the elastic member 64 during the contact period including the contact point (the disk 66 acts in a direction away from the pulley 5) It is possible to reduce the amount of impact between the disk 66 and the pulley 5 at the point of contact by increasing the force). Accordingly, transmission of noise and vibration generated by collision between the disk 66 and the pulley 5 to the elastic member 64 at the point of contact can be reduced.

Also, the first damping member 682 is spaced apart from the disk 66 during the contact period, and then comes into contact with the disk 66 again during the separation period, so that the disk 66 and the elastic member 64 ) can be prevented from colliding, and impact transmitted to the elastic member 64 by the repelling force of the disk 66 can be alleviated. Accordingly, transmission of noise and vibration due to collision between the elastic member 64 and the disk 66 to the elastic member 64 at the time of separation can be reduced.

Also, the first damping member 682 may improve responsiveness of the clutch. That is, the increase in the elastic force of the elastic member 64 by the first damping member 682 moves the disk 66 from the pulley 5 at a faster speed at the time of changing from the contact period to the separation period. The responsiveness of the clutch can be improved by spacing them apart.

In addition, the clutch according to the present embodiment and the compressor including the same further include the second damping member 684, so that noise and vibration due to contact and separation between the disk 66 and the pulley 5 are reduced to the elasticity. The transmission to the member 64 can be further reduced.

That is, the second damping member 684 comes into contact with the second annular portion 644 and the second disk 664 at the time of contact, so that the second disk 664 collides with the pulley 5. can absorb noise and vibration. Accordingly, transmission of noise and vibration due to collision between the second disk 664 and the pulley 5 to the elastic member 64 at the point of contact can be reduced.

Also, the second damping member 684 is brought into contact with the second annular portion 644 and the second disk 664 during the contact period, and thus passes from the pulley 5 through the second disk 664. Noise and vibration transmitted to the elastic member 64 can be absorbed. Accordingly, transmission of noise and vibration transmitted from the pulley 5 through the second disk 664 to the elastic member 64 during the contact period can be reduced.

Further, the second damping member 684 is brought into contact with the second annular portion 644 and the second disk 664 at the separation time, so that the gap between the second disk 664 and the elastic member 64 A collision can be prevented, and an impact transmitted to the elastic member 64 by the repelling force of the second disk 664 can be further alleviated. Accordingly, transmission of noise and vibration due to collision between the second disk 664 and the elastic member 64 to the elastic member 64 at the time of separation can be further reduced.

On the other hand, although the impact when the disk 66 contacts the pulley 5 is attenuated by the damping member 68, the impact when the disk 66 and the pulley 5 contact each other is significant. However, it can still be transferred to the hub 62 side through the elastic member 64 made of metal.

Considering this, the disk 66 and the elastic member 64 according to the present embodiment, when the disk 66 and the pulley 5 are in contact, a part of the disk 66 is the disk 66 It may be formed to contact the pulley 5 first before the other part of the disk 66 and the pulley 5 to reduce the impact upon contact.

Specifically, as described above, the disk 66 includes the first disk 662 and the second disk 664, and the first disk 662 and the second disk 664 are separated from each other. As it is formed as a sieve, it can contact and be separated from the pulley 5 independently of each other.

And, as described above, as the second annular portion 644 of the elastic member 64 is formed to be accommodated in the first annular portion 642, the first annular portion 642 and the second annular portion 642 are formed. The portion 644 may have different lengths in the circumferential direction. Accordingly, the first annular portion 642 and the second annular portion 644 have different spring rates (force acting on the elastic member 64 / change in length of the elastic member 64). can be formed

In addition, the fact that the first annular portion 642 and the second annular portion 644 have different widths in the radial direction is also related to the spring constant of the first annular portion 642 and the second annular portion 644. The spring constant of may be different.

According to this configuration, the side of the first annular portion 642 having a relatively large spring constant is deformed, and the side of the second annular portion 644 having a relatively small spring constant is easy to deform, so that the disc 66 When is in contact with the pulley 5, the second disk 664 may contact the pulley 5 first, and the first disk 662 may contact later. That is, the disk 66 behaves as shown in FIG. 12 and can contact the pulley 5 . Accordingly, impact upon contact between the disk 66 and the pulley 5 may be reduced, and impact noise transmitted to the hub 62 may be further reduced.

Here, in the present embodiment, the first annular portion 642 and the second annular portion 644 are formed to have different radial widths as well as lengths in the circumferential direction, but are not limited thereto. That is, for example, the first annular portion 642 and the second annular portion 644 may have different circumferential lengths and the same radial width.

And, in the case of this embodiment, the second disk 664 is formed to contact the pulley 5 before the first disk 662, but is not limited thereto. That is, the first disk 662 may be formed to contact the pulley 5 before the second disk 664 .

On the other hand, the gap 666 between the first disk 662 and the second disk 664 has an effect of increasing the suction magnetic flux of the field coil assembly 7 transmitted to the disk hub assembly 6, , the magnetic flux attracted by the field coil assembly 7 transferred to the disk hub assembly 6 is proportional to the size of the gap 666. However, in the present embodiment, as the first disk 662 and the second disk 664 are formed separately from each other, the gap 666 is formed in an annular shape continuously extending along the rotation direction, The size of gap 666 can be increased. Accordingly, magnetic flux attracted by the field coil assembly 7 transmitted to the disk hub assembly 6 is further increased, so that contact force between the pulley 5 and the disk hub assembly 6 may be improved.

Meanwhile, in the present embodiment, when the field coil assembly 7 is magnetized, the disk 66 and the pulley 5 are in contact, and when the field coil assembly 7 is demagnetized, the disk 66 and the pulley (5) is formed spaced apart. That is, the field coil assembly 7 is magnetized when power is applied and moves the disk 66 toward the pulley 5 to bring the disk 66 and the pulley 5 into contact, and the elastic member 64 is formed so that the disk 66 applies an elastic force to the disk 66 in a direction away from the pulley 5. However, it is not limited thereto, and when the field coil assembly 7 is magnetized, the disk 66 and the pulley 5 are spaced apart, and when the field coil assembly 7 is demagnetized, the disk 66 and the The pulley 5 may be formed to contact. That is, the field coil assembly 7 is magnetized when power is applied and moves the disk 66 in a direction away from the pulley 5 to separate the disk 66 and the pulley 5, and the elastic member 64 may be formed to apply an elastic force to the disk 66 in a direction in which the disk 66 approaches the pulley 5 .

1: casing
2: compression mechanism
3: axis of rotation
4: power transmission mechanism
5: pulley
6: Disc hub assembly
7: field coil assembly
62: hub
63: third fastening member
64: elastic member
65: second fastening member
66: disk
67: first fastening member
68: attenuation member
642: first annular portion
644: second annular portion
644a: second annular part fastening hole
646: bridge part
648: center
662: first disk
664: second disk
664a: second disk fastening hole
666: Gap
682: first damping member
684: second damping member
684a: second damping member fastening hole

Claims (10)

A pulley rotated by receiving power;
a disk contacting and spaced apart from the pulley;
a hub rotatable with the compressor shaft; and
An elastic member fastening the hub and the disk so that the disk can move in a direction approaching or moving away from the pulley based on the hub; and
The disk includes an annular first disk and an annular second disk accommodated in the first disk,
The elastic member includes a first annular portion fastened to the first disk, a second annular portion accommodated in the first annular portion and fastened to the second disk, and a bridge connecting the first annular portion and the second annular portion. And a central portion extending from the second annular portion and engaging with the hub,
The clutch according to claim 1, wherein the second disk is completely spaced apart from the first disk in a circumferential direction. According to claim 1,
The first disk and the first annular portion are fastened by a first fastening member, and the second disk and the second annular portion are fastened by a second fastening member. According to claim 2,
The first disk includes a first disk fastening hole into which the first fastening member is inserted,
The first annular part includes a first annular part fastening hole into which the first fastening member is inserted. According to claim 2,
The second disk includes a second disk fastening hole into which the second fastening member is inserted,
The second annular portion includes a second annular portion fastening hole into which the second fastening member is inserted. According to claim 4,
a first damping member contacting the elastic member and the disk during a separation period between the disk and the pulley, and spaced apart from one of the elastic member and the disk and contacting the other during a contact period between the disk and the pulley; and
The clutch further includes a second damping member contacting the disk and the elastic member during a contact period and a separation period between the disk and the pulley. According to claim 5,
The second damping member is interposed between the second disk and the second annular portion and is engaged with the second disk and the second annular portion by the second fastening member. According to claim 6,
The second damping member includes a second damping member fastening hole into which the second fastening member is inserted. According to claim 1,
The first annular portion and the second annular portion are formed to have different spring constants. According to claim 8,
The first annular portion and the second annular portion are formed to have at least one of a length in a circumferential direction and a width in a radial direction different from each other. casing;
a compression mechanism for compressing the refrigerant inside the casing;
a rotational shaft transmitting rotational force from a drive source provided outside the casing to the compressor; and
A power transmission mechanism that selectively connects and divides the driving source and the rotating shaft;
The power transmission mechanism is a compressor formed of the clutch according to any one of claims 1 to 9.

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