KR20130092874A - Disk and hub assembly of electromagnetic clutch for compressor - Google Patents

Abstract

PURPOSE: A disc and hub assembly unit of an electric clutch for a compressor is provided to simultaneously supply damping performance on all directions with the damping performance of an axis direction of a leaf spring by obtaining the damping performance on a rotary direction. CONSTITUTION: A disc and hub assembly unit of an electric clutch for a compressor comprises a disc, a hub (30), a plurality of leaf springs, and a rotary damping unit (500). The disc has a slit hole in the circumference direction and a penetration hole in the center and includes an outer ring and an inner ring. The hub is located on the penetration hole of the disc and includes a flange unit to be connected with the disc and a shaft connection unit to be connected with a driving shaft. The leaf spring connects the hub and the disc and supplies the force of restitution so that the disc is separated from a pulley when the generation of suction magnetic flux is stopped. The rotary damping unit is installed on the inner circumference of the hub, and the end of the driving shaft inserted into the hub is connected to the rotary damping unit. The rotary damping unit supplies damping power in a rotatory direction of the hub.

Description

Technical Field The present invention relates to a disk and hub assembly of an electromagnetic clutch for a compressor,

The present invention relates to a new type of electronic clutch for a compressor that can ensure the damping of the disk and hub assembly in the rotational direction during the operation of the electronic clutch through the structural improvement of the disk and hub assembly constituting the electronic clutch.

2. Description of the Related Art Generally, an electromagnetic clutch used in a vehicle is a series of arrangements for selectively providing a driving force of an engine to a compressor of an air conditioning system.

The electromagnetic clutch as described above consists largely of a pulley assembly 10 and a disk and hub assembly as shown in FIG.

Here, the pulley assembly 10 includes a pulley 11 to which a belt that receives driving force of the engine is connected, and a field core 12 that generates a suction magnetic flux by power application.

The field core 12 is inserted and fixed to the back surface of the pulley 11 and the pulley 11 is rotatably installed at an end of a front housing 4 constituting a compressor. At this time, a bearing (13) is installed between the pulley (11) and the end of the front housing (4).

In addition, the disk and hub assembly is configured to receive the driving force of the engine provided through the pulley assembly to the drive shaft (1) of the compressor, the disk 20, the hub 30 and the leaf spring 40 It is configured to include.

That is, the disk 20 is rotated together with the pulley 11 in a state where the disk 20 is in contact with the pulley 11 of the pulley assembly 10 by the suction flux provided from the pulley assembly 10, So that the compressor can perform the compression operation.

At this time, the disc 20 is composed of an outer ring 22 forming an outer side portion with a boundary of the slit hole 21 and an inner ring 23 forming an inner side portion, A through hole 20a having a diameter larger than that of the hub 30 is formed. A plurality of bridges 24 connecting the inner ring 23 and the outer ring 22 are formed.

One end of the leaf spring 40 is fixed to the outer ring 22 of the disk 20 and the other end of the leaf spring 40 is fixed to the hub 30 to connect the disk 20 and the hub 30 So that power transmission between the field core 12 and the field core 12 can be performed. When the disk 20 is deformed in the axial direction when the disk 20 is brought into contact with the pulley 11 by the generation of the attracting magnetic flux from the field core 12, , The disk 20 is restored to be separated from the pulley 11 while being restored.

At this time, the leaf spring 40 is provided at its other end with an extension part 43 extending in a bent state toward the inner ring 23. The extension part 43 is provided with a cushioning material 43a, And is in contact with the surface of the ring 23.

However, the leaf spring 40 as described above is formed to form a flat plate structure, so that the axial deformation and restoration thereof is smooth, but does not deform in the same direction as the rotation direction of the disk 20.

Accordingly, in the above-described conventional electromagnetic clutch, when the damping property with respect to the rotational direction of the disk 20 can not be ensured and the electromagnetic clutch is turned on to generate a suction magnetic flux from the field core 12 A clutch slip phenomenon occurs due to the occurrence of a peak torque between the pulley 11 and the disc 20.

That is, since the disk 20 is coupled to the hub 30 in a power-transmitting manner by the leaf spring 40 and the hub 30 is provided with the load of the driving shaft 1, The pulley 11 is rotated in response to the driving force of the engine and is rotated by the ON operation of the electromagnetic clutch, Since the leaf spring 40 for transmitting the driving force of the disk 20 to the hub 30 can not perform the damping in the rotating direction side even though the pulley 11 is instantly brought into close contact with the pulley 11, The slip phenomenon between the pulley 20 and the pulley 11 occurs, and as a result, the durability of the electromagnetic clutch can not be reduced.

The present invention has been made to solve the various problems according to the prior art described above, the object of the present invention is to rotate the disk and hub assembly during operation of the electronic clutch through the structural improvement of the disk and hub assembly constituting the electronic clutch To provide a new type of disk and hub assembly of the electromagnetic clutch for the compressor to ensure directional damping.

Disk and hub assembly of the electronic clutch for the compressor of the present invention for achieving the above object is to be divided into the outer ring and the inner ring to the boundary of the plurality of slit holes formed along the circumferential direction in addition to the through hole is formed in the central portion A disk and hub assembly comprising a formed disk, a hub positioned in a through hole of the disk and having an end of a drive shaft of the compressor inserted therein, and a plurality of leaf springs connecting the hub to the disk. It is installed on the inner circumferential surface is coupled to the end of the drive shaft inserted into the hub and characterized in that it further comprises a rotary damping unit for providing a damping force in the rotational direction of the hub.

Here, the rotation damping portion is formed by pressing the inner circumferential surface of the hub and the outer ring to form an outer surface, and the inner body while being spaced apart in the outer ring, the inner ring to which the drive shaft is coupled, installed between the outer ring and the inner ring While it is characterized in that it comprises a damper for providing a restoring force to the inner ring in the direction of rotation of the drive shaft or in a direction opposite to the rotation direction.

In addition, the inner circumferential surface of the inner ring constituting the rotation damping portion is characterized in that the spline is formed so that the drive shaft can be fixed to the power transmission.

In addition, the damper constituting the rotary damping portion is characterized in that it is formed of a coil spring forming a shape wound along the axial direction of the drive shaft.

The disk and hub assembly of the electronic clutch for a compressor according to the present invention as described above has the effect that it is possible to further secure the damping performance of the rotation direction side of the disk by providing a rotation damping unit to the hub.

In other words, by ensuring the damping performance of the rotational direction described above, it is possible to simultaneously provide damping performance in all directions along with the axial damping performance of the leaf spring.

In addition, the disk and hub assembly can perform the damping against the axial deformation by the leaf spring as well as the rotational damping by the rotary damping unit at the same time, thereby minimizing the slip phenomenon between the disk and the pulley. It also has the effect of achieving the durability improvement of the electronic clutch thereby.

1 is a cross-sectional view illustrating a state in which a disk and hub assembly of a conventional electronic clutch for a conventional compressor is installed in a compressor.
2 is an exploded perspective view illustrating a disk and a hub assembly of a conventional electromagnetic clutch for a compressor,
3 is a cross-sectional view illustrating a state in which a disc and hub assembly of an electronic clutch for a compressor according to a preferred embodiment of the present invention is installed in a compressor.
4 is an exploded perspective view illustrating a disc and a hub assembly of an electromagnetic clutch for a compressor according to a preferred embodiment of the present invention.

Hereinafter, a preferred embodiment of the disk and hub assembly of the electronic clutch for a compressor of the present invention will be described with reference to FIGS. 3 and 4.

The electromagnetic clutch for a compressor according to the present invention comprises a pulley assembly 10 and a disk and hub assembly wherein the pulley assembly 10 includes a pulley 11 to which a belt, And a field core 12 for generating a attracting magnetic flux by power application.

3 and 4, the disk and hub assembly of the electronic clutch for a compressor according to the preferred embodiment of the present invention is largely a disk 20, a hub 30, and a plurality of leaf springs 40. As shown in FIG. Then, the rotation damping unit 500 is included.

This will be explained in more detail for each configuration.

First, the disc 20 is a portion rotated selectively by being brought into close contact with the surface of the pulley 11 constituting the pulley assembly 10 and receiving the driving force of the engine from the pulley 11.

The disk 20 is formed to have a disk shape as a whole and has a ring 20a having a through hole 20a having a larger diameter than the hub 30 for seating the hub 30, ).

A slit hole 21 is formed along the circumferential direction of the disk 20 between the outer circumferential surface of the disk 20 and the inner circumferential surface of the through hole 20a, An outer ring 22 constituting an outer portion, and an inner ring 23 constituting an inner portion.

In particular, a plurality of bridges 24 are formed between the outer ring 22 and the inner ring 23 to connect the bridges 24 to each other. In this case, when the inoperable state of the compressor occurs, (22) and the inner ring (23) while cutting off the power transmission between the outer ring (22) and the inner ring (23).

Next, the hub 30 is a portion that provides the driving force of the engine, which is transmitted through the disc 20, to the driving shaft 1 while the driving shaft 1 of the compressor is coupled.

The hub 30 is disposed in the through hole 20a formed in the disk 20 and includes a shaft coupling portion 31 for coupling with the drive shaft 1, (32).

Next, the leaf spring 40 connects the hub 30 and the disk 20 and releases power to the field core 12 constituting the pulley assembly 10 to generate suction flux. In this case, the disk 20 is a part that provides a restoring force to be spaced apart from the pulley 11.

One end of the leaf spring 40 is fixed to the outer ring 22 of the disk 20 and the other end is fixed to the hub 30 to connect between the disk 20 and the hub 30 It is possible to transmit power to each other, the deformed in the axial direction when the disk 20 is in contact with the pulley 11 by the generation of the magnetic flux from the field core 12 and the field core 12 When the suction flux from the release is released, the disk 20 serves to be spaced apart from the pulley 11 while being restored.

At this time, the leaf spring 40 and the outer ring 22 and the leaf spring 40 and the hub 30 is fixed to each other by a rivet 41.

Next, the rotation damping unit 500 is a portion that provides a damping force in the rotational direction of the hub 20, and is caused by the rotation damping unit 500 when power is transmitted between the disk and the hub assembly and the drive shaft 1. By providing a damping force is made to play a role to prevent the slip phenomenon between each other when the disk 20 is rotated while being in close contact with the pulley (11).

The rotation damping unit 500 is installed on the inner circumferential surface of the hub 30 and configured to couple the ends of the drive shaft 1 recessed into the hub 30, and the outer ring 510 and the inner ring 520, and It is configured to include a damper (530).

Here, the outer ring 510 is a portion that forms the outer body of the rotary damping unit 500 while being press-fitted and fixed to the inner circumferential surface of the shaft coupling portion 31 forming the hub 30. Of course, the outer ring and the shaft coupling portion 31 may be coupled to each other by spline coupling or screw coupling.

In addition, the inner ring 520 is a portion that forms the inner body of the rotation damping unit 500, and is spaced apart from the inner ring 510, and the drive shaft 1 is capable of transmitting power to the inner circumferential surface thereof. Combined.

In this case, a spline 521 is formed on the inner circumferential surface of the inner ring 520 so that the drive shaft 1 can be fixed to the power transmission, and the spline of the inner ring 520 is formed on the outer circumferential surface of the drive shaft 1. A spline 1a having a shape corresponding to 521 is formed.

In addition, the damper 530 is provided between the outer ring 510 and the inner ring 520 to provide a restoring force to the inner ring 520 in a direction of rotation of the drive shaft 1 or in a direction opposite to the direction of rotation. It is a part to do.

Particularly, in the embodiment of the present invention, the damper 530 constituting the rotary damping part 500 is formed as a coil spring having a shape wound along the axial direction of the drive shaft 1, and one end thereof is the outer ring 510. In addition to being fixed to the other end is proposed to be configured to be fixed to the inner ring (520).

That is, while the coil spring-shaped damper 530 can perform the damping in the axial direction together with the leaf spring 40, it can also perform the damping in the rotational direction while compressing and restoring in a winding manner. It would be.

At this time, the damping in the direction of rotation by the damper 530 is from the drive shaft (1) during the initial rotation of the disk 20 in close contact with the pulley 11 in the power transmission process between the hub 30 and the drive shaft (1) By damping to impart a temporal term so that it is not affected by the provided load (stop load), the peak torque between the pulley 11 and the disk 20 when the electromagnetic clutch is ON is It can be reduced, thereby minimizing the slip phenomenon between the pulley (11) and the disk (20).

Hereinafter, the operation of the electromagnetic clutch disk and hub assembly of the compressor according to the embodiment of the present invention will be described in more detail.

First, when power to the electromagnetic clutch is applied while the pulley 11 constituting the pulley assembly 10 driven by the engine is proceeding to rotate at high speed, a suction flux is generated from the field core 12, So that the disc 20 is brought into close contact with the outer surface of the pulley 11.

At this time, the leaf spring 40 coupled between the disk 20 and the hub 30 is elastically deformed while moving toward the pulley 11 together with the outer ring 22 of the disk 20, this elasticity The damping force according to the deformation is provided to the disk 20 to protect against the axial impact of the disk 20.

In addition, when the disk 20 and the pulley 11 is in contact with each other, the disk 20 is suddenly provided with a rotational force of the pulley 11 and is suddenly rotated.

However, the damper 530 constituting the rotary damping part 500 has an inner ring 520 constituting the rotary damping part 500 as the damper 530 is wound in the same direction as the rotational direction of the outer ring 510 to provide elastic force. In contrast to the instantaneous rotation of the outer ring 510 is a gradual rotation is made by the damping of the damper (530).

Therefore, the disk 20 can be stably rotated together with the pulley 11 at the initial contact with the pulley 11, so that the torque rapidly increasing when the disk 20 is in contact with the pulley 11 is Its peak torque can be significantly lower than the structure without the rotation damping unit 500, and the slip phenomenon between the disk 20 and the pulley 11 can be reduced.

As a result, the rotational force of the pulley 11 is smoothly transmitted to the drive shaft 1 through the disk 20, the leaf spring 40, the hub 30, and the rotation damping unit 500, thereby smoothly compressing the compressor. Proceed.

At this time, the portion where the magnetic flux of the field core 12 is provided is the portion where the outer ring 22 of the disk 20 is located, and the hub 30 located in the through hole 20a of the disk 20. Since the position is fixed to the compressor, the displacement (height difference) between the outer ring 22 and the inner ring 23 of the disk 20 is substantially generated, so that the leaf spring 400 in the axial direction Flexural deformation is maintained.

Meanwhile, when the power to the electromagnetic clutch is cut off during the compression operation of the compressor as described above, the attracting force between the disk 20 and the pulley 11 is increased as the attracting magnetic flux provided from the field core 12 is blocked Is released.

In this case, the leaf spring 40 moves the outer ring 22 of the disk 20 in the axial direction while being restored to its original state by its restoring force, which causes the disk 20 to be pulled ( The contact is released from 11) and further power transmission stops.

In addition, when the disk 20 is momentarily released from the pulley 11 as described above, the disk 20 is continuously rotated by inertia, but is provided from the drive shaft 1 constituting the compressor. It is gradually stopped by the stopping force.

As such, the disk and hub assembly of the electronic clutch for the compressor according to the present invention, as well as the damping action of the rotational side deformation as well as the damping of the axial deformation of the disk 20 through the additional provision of the rotary damping unit 500. By being able to perform as shown in the figure has the advantage that the slip phenomenon between the disk 20 and the pulley 11 can be reduced as much as possible, thereby resulting in the durability of the electronic clutch can be achieved.

10. Pulley assembly 11. Pulley
12. Field core 13. Bearing
20. Disc 20a. Through hole
21. Slit ball 22. Outer ring
23. Inner ring 24. Bridge
30. Hub 31. Axial coupling portion
32. Flange 40. Leaf spring
500. Rotary damping unit 510. Outer ring
520. Inner ring 521. Spline
530. Damper

Claims (4)

The through-hole 20a is formed in the central portion, and the disk 20 is formed to be divided into the outer ring 22 and the inner ring 23 by a plurality of slit holes 21 formed along the circumferential direction, The hub 30 is located in the through hole 20a of the disk 20, and a plurality of leaf springs connecting the hub 30 to the end of the drive shaft 1 of the compressor and connecting the hub 30 to the disk 20. A disk and hub assembly comprising 40, comprising:
The rotary damping unit 500 is installed on the inner circumferential surface of the hub 30 and coupled to the end of the driving shaft 1 recessed into the hub 30, and further provides a damping force in the rotational direction of the hub 1. Disc and hub assembly of the electronic clutch for the compressor, characterized in that it is configured. The method of claim 1,
The rotary damping unit 500
An outer ring 510 which is press-fitted to an inner circumferential surface of the hub 30 to form an outer body;
An inner ring 520 which is spaced apart from the outer ring 510 to form an inner body, and to which the driving shaft 1 is coupled;
A damper 530 installed between the outer ring 510 and the inner ring 520 to provide a restoring force to the inner ring 520 in a direction of rotation of the drive shaft 1 or in a direction opposite to the direction of rotation; Disc and hub assembly of the electronic clutch for the compressor, characterized in that configured. 3. The method of claim 2,
On the inner circumferential surface of the inner ring 520 constituting the rotary damping unit 500
Disc and hub assembly of the electromagnetic clutch for the compressor, characterized in that the spline (521) is formed so that the drive shaft (1) can be fixed to the power transmission. 3. The method of claim 2,
The damper 530 constituting the rotary damping unit 500 is
Disk and hub assembly of the electromagnetic clutch for the compressor, characterized in that formed by a coil spring wound in the axial direction of the drive shaft (1).

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